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Патент USA US3049120

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Aug. 14, 1962
3,049,111
F. BOGLE
FUEL DISTRIBUTION SYSTEM FOR INTERNAL COMBUSTION ENGINES
Filed Sept. 2, 1958
FIGJ
INVENTOR
FRANK
BY
BOGLE
may.
ATTORNEY
Aug. 14, 1962
F. BUGLE
3,049,111
FUEL DISTRIBUTION SYSTEM FOR INTERNAL COMBUSTION ENGINES
Filed Sept. 2, 1958
2 Sheets-Sheet 2
FRANK
M
I22/
‘I I2
FIG. 6
BOGLE
%ow@
A7TORNEY
hired gtates Patent @fiee
B?ihd ll
Patented Aug. 14, 1962
2
3,049,111
FUEL DISTRBUTKUN SYSTEM FOR INTERNAL
COMBUSTION ENGlNES
Frank Eagle, 3365 Peachtree Road, Atlanta, Ga.
Filed Sept. 2, 1958, Ser. No. 758,183
11 Claims. (Cl. 123-419)
This invention relates to a fuel distribution system for
internal combustion engines and especially to a distribu
tion system of this sort wherein the fuel is supplied by
injecting at the intake of the cylinder itself. A metering
unit controls the supply of fuel to the individual cylinders
in response to the demands of the engine itself depending
upon the engine load, acceleration and other requirements
of the engine.
More particularly, this invention contemplates injecting
the fuel through individual intake valves which. employ
nozzles constructed by producting small openings around
the periphery of the valve seat. In a preferred form, this
nozzle construction is achieved by using two ?at rings or
openings formed in the thin shim between two retainer
rings thereby presenting a simple inexpensive way of mak
ing nozzles.
The depressurized metering unit employed herein has a
small difference in pressure between it and the intake valve
which permits the use of larger injecting areas. This
eliminates the necessity for a high pressure fuel pump to
meet fuel demands at top ‘speeds. It also gives better con
trol over the ?ow of the fuel when the engine is idling.
Also, the intake air passes through the air duct, located
quite near the center of the metering unit, and by using
the fins in the air duct, the area of surface exposed to the
passing air is increased. Since nearly the same area is
exposed to the fuel on the inside of the metering unit, the
air, not being pre-heated, extracts the heat from the fuel
and keeps the fuel cool and free from boiling or vapor
looks.
The particular applications of my invention together
with other advantages and objects thereof will be apparent
from the following speci?cation taken in conjunction with
washers at the valve seat con?ning a notched shim ring
therebetween.
the accompanying drawings, wherein:
A central metering unit is provided ‘for measuring and
controlling the quantity of fuel and pressure delivered at
the intake nozzles. This unit has an air duct through
of my invention mounted on an engine and having a
ing elements.
which air passes and within said duct is mounted a mov
able blade which controls a shaft connected with a ?oating
FIG. 2 is a top plan view of the metering unit in FIG. 1
‘with the top cover removed exposing the metering ele
metering plunger within the metering, unit. The plunger
ments.
is mounted in a casing and is resisted by a coil spring.
A gear pump pumps fuel from the metering unit sump ‘
FIG. 3 is a cross-sectional right side elevation view of
the metering unit in FIG. 1 taken along the vlines 3-3
into the plunger casing through an ‘annular groove in the
plunger and into the inside thereof. An outlet is formed
in the upper part of the plunger leading through an an
in FIG. 2.
FIG. 4 is a section view of the valve detail showing
nular groove into an outlet tube connected to the individ
ual cylinder fuel supply valves. The uppermost part of ‘
the plunger has a spill or over?ow outlet formed therein
adapted to over?ow fuel out of the plunger easing at the
top thereof back into the sump when the plunger is raised
FIG. 1 is a front elevation view of the metering unit
portion of the front broken away exposing the inner meter
the intake port.
FIG. 5 is a top view of the shim nozzle arrangement
detail used in the intake port.
FIG. 6 is a diagrammatic view of the balance unit
moved from its FIG. 3 position.
The system disclosed herein is described hereinafter as
it would be used with a conventional internal combustion
to this point. Accordingly, the plunger ?oats inside the
casing receiving fuel therein and transferring same through 40 engine (not shown) having a number of moving pistons
the outlet fuel lines, and the plunger is controlled as a
connected with a common cam shaft and provided with
valve in its upward and downward movement by the move
some type of engine head over the pistons and also with
ment of the movable blade in the air duct. A balancing
a manifold air induction conduit through which air can
unit is provided within the casing employing a small hol
travel to each piston. The usual circular valve and valve
low plunger mounted within a hollow casing. An arm 45 stem may be used but with a modi?ed nozzle arrangement
connected with the plunger is interposed between the con
introduced by this invention. Since these parts of the en
nection of the metering plunger control shaft to hold same
gine are conventional and vary from one engine to an
in position and the plunger is connected by suitable valves
other, no attempt is made here to show the engine details
with both the intake manifold and the ‘atmosphere. As
and it ‘will be made apparent in the ensuing description
the engine requirements change and the movement of air
how the metering unit combines into the engine fuel sup
in the intake change, the balancing unit operates to reduce
ply, and how the valves operate in the fuel introduction.
the pressure in the metering unit and to maintain a con
In FIG. 1, the metering unit 16 is contained within a
stant difference in pressure between the intake manifold
fuel casing 12 with closed sides 14, top 16, which can be
(or the intake valve) and the inside of the metering unit.
removed for repair and adjustment, and bottom 18.
As the fuel requirements vary in the metering unit, the 6 Mounted within one end of the casing 12 is a conventional
plunger moves between fuel supply and over?ow and
liquid gear pump 20 having meshing pump gears shown
shutting off of fuel.
diagrammatically at 22, 24. Said pump 20 is enclosed
Among the objects and advantages of my system is an
within said casing by an inner pump compartment 26.
arrangement whereby the metering of the air and fuel does
An open inlet 28 is formed in said pump compartment 26
not place any constriction on the ?ow of air as in other 60 to admit fuel into said pump. An outlet tube 30- leads
systems. By playing the stream of air on the blade to
from said pump 20 into the fuel metering cylinder 32 as
produce a torque on the shaft the small change in direction
described hereinafter.
of flow of air is turned to an advantage because it pro
Mounted in and through said casing 12 is a large air
duces air turbulence or it gives the column of air a spiral
induction conduit or duct 34- With protruding front en
65 trance mouth 36 having a butter?y throttle valve 38 there
motion which is desirable in mixing fuel with \air.
By injecting fuel at the intake valve port, fuel vapors
in. Duct 34 is curved in an elbow shape and leads at
never come in contact with a cold surface as in the case
the bottom into the manifold intake units 40. Within
of manifold injection, as the injection is directly into the
said duct 34 is an air or blower wheel 42 ?xed on a ver
combustion chamber. ‘It has the advantage of intermittent
tical shaft 44 which is mounted through the wall of duct
70 4 and within the duct 34 on bearing 47.. Air wheel 42
injection.
Through the use of the novel shim nozzle arrangement
has a cylindrical shell 48 with slanted blades 50 spaced
herein, fuel is injected at the intake valve port through
within and to be a?ected by air passing thereagainst in
3,049,111
3
4
such a manner as to cause torque on the wheel 42 to turn
The sides 14, top 16, bottom 18, and the walls of duct
ton 122 with a peripheral groove 123 leading to inlet 124
through the side thereof into the interior thereof and there
fore into the interior 116 of cylinder ‘114. An air line
1126 connects the outside of casing 12 through the wall of
34 de?ne within the casing 12 a ?uid tight sump or fuel
compartment 54 outside of the gear pump 20 and the duct
34. At one side 14 an open inlet 56 is formed receiving
connected thereto a fuel line 58 from the conventional en
cylinder 1114. An opening 128 just above line ‘126 opens
the inside of cylinder 114 to the inside of casing 12 and a
second opening 129 on the cylinder wall does the same.
A circumferential, peripheral groove ‘130 in the side of
gine fuel pump (not shown). The fuel through this inlet
plunger piston 122 will align air line 1126 with opening
the shaft 44. Guide vanes 52 ‘are formed in spaced rela
tion on the inside of the ‘duct 34.
128 thereby leading outside air into the inside of casing
12 at one position thereof and in the up position thereof,
shutting off line 126 and thereafter bringing opening 129
arm 62 pivotally attached to the side wall 14 at pivot 64.
in alignment with opening inlet 124 connecting the in
Float arm 62 has thereon a conical stopper valve or
terior of casing 12 with the interior of cylinder 114. A
washer 166 which ?ts into the spill opening inlet 56 to open
and close same in response to the ?oat arm 62 setting. 15 suction line 131 leads from the very top of the inside of
cylinder 112 to the interior of the duct 36. The bottom of
Within said casing 12 adjacent the fuel pump 20 is the
piston 122 is connected loosely by a meter arm 1312 which
metering cylinder and plunger valve arrangement 32 ?xed
rests on the top 76 of plunger 74 and pivotally connects
on a support member 68. A cylinder 70 is ?uid tight and
to casing 12 at pivot 134. Rod '12()» is connected to a
has connected thereto leading into the interior thereof in
inlet connection 72 receiving the outlet tube 30 from fuel 20 thermostat within the automobile (not shown) which
56 is allowed to spill into the sump 54 to reach a certain
level determined by a ?oat 60‘ mounted pivotally on a ?oat
thermostat holds the rod down until the engine warms up.
pump 20. The inside of cylinder 7 0‘ is bored to receive a
Until the engine is warm, plunger 74 is prevented from
piston type plunger or valve 74 closed at the top 76 thereof
moving upwardly and therefore an ample supply of fuel
and provided with a hollow interior 78 through which fuel
is assured.
can pass. Inlet holes ‘80 are formed in piston plunger 74
Cold Starting
from an outside peripheral ring groove 81 into the interior 25
78 thereof. Similarly, outlet holes 82 are formed therein
To start the engine the ignition and starter switch is
and when in proper alignment lead to the outlet fuel line
turned on thereby energizing the solenoid 102 to release
84 through the side wall 14. Fuel line 84 then leads and
the bell crank 90 for movement. The vacuum in the duct
divides into the separate, individual fuel lines supplying
for each ‘manifold fuel injection valve being used. The
top of the plunger 74 has over?ow or spill holes 86 therein
which normally are partly open with the walls of the
cylinder 74) but when the plunger 74 moves sufficiently up
wardly, become ‘more and more exposed and spill more
into the sump ‘54.
Plunger 74 acts on and is balanced
with the weight of bar ‘132 by a spring 88 within the bot
tom of cylinder 70‘. A spring 88 within cylinder 70 sup
ports the plunger 74 and balances out its weight ‘and the
weight of the members resting on it.
36 passing through pipe 131 will pull the piston 122 up
ward thereby aligning the vacuum port 129 and reducing
the pressure in the metering unit. Simultaneously through
bar 132, plunger 74 is held in upward position until the
required pressure differential is reached in the metering
unit.
Then as the piston 12‘2 moves to a neutral position,
ports 82 will be aligned with fuel line ‘84 and will leave
spill ports ‘86 partly open through which the fuel may
enter. The thermostat (not shown) depresses the rod 120
which exerts a light pressure on the spring 1313 and then
on the piston 122 thereby increasing the difference in pres
A bell crank 90 is mounted for movement on a {?xed 40 sure between the intake manifold and in the metering
pivot 92 attached to the interior of the casing 12. One
arm 94 of the crank 90 is mounted above and adjacent the
top 76 of plunger 74 and the other arm 96 of the crank
90 is connected by a toggle connection 97 and member 918
with the shaft end 44 so that turning of the shaft 44
moves and actuates the bell crank W.
A safety interlock in the form of a solenoid actuator
100 connects with the ignition switch (not shown) of the
automobile to prevent fuel escape when the engine is not
in use.
A solenoid 102 has a toggle arm 104 therein
which is forced against the bell crank arm 96 by a captive
spring 106 with washer 108. However, when solenoid 102
is actuated, the spring is pulled inwardly and the force is
taken from the arm so that the bell crank 90 is free to
move. ‘In operation, ordinarily the force of fuel through
line 30 and through the interior 718 of cylinder 70 on
plunger 74 will drive the plunger 74 upwardly tending to
bring the holes 82 out of alignment with the outlet 84
substantially simultaneously therewith opening the spill
unit. This increase in pressure differential will produce
a richer mixture.
As a motor and the thermostat warm
up, this difference in pressure of the thermostat on the rod
120 will decrease until it becomes zero.
When the butter?y valve 38 is open or partly open, the
air will come into the duct .36 and impinge on the vanes
and blades 50 of the wheel 42 thereby producing a torque
in the shaft 44. This torque is resisted by the arm 90 and
parts 97, 918 and the plunger 74. The force from hell
crank 90 on the plunger 74 must be held in equilibrium
by the force that the fuel exerts on the plunger 74. 'Fuel
is delivered to the plunger 74 under pressure by the fuel
pump 20. To accelerate, throttle 38 is opened thereby ad
mitting more air through duct 34 causing more air to im
pinge on vanes 50 which causes more torque on shaft 44.
The added torque of shaft 44 moves bell crank downward
ly on plunger 74 thereby further closing the spill ports 86
to increase the pressure inside the plunger 74 which deliv
ers more fuel through line 84.
ports '86 and releasing the pressure within plunger 78. 60 Using the torque amount exerted on the shaft 44 for a
However, the movement of the air through the duct 36
turns the shaft 44 through its action on wheel 42 thereby
moving arm 94 against the top of plunger tending to push
same downwardly to resist the upward movement from
the fuel supplied through line 30-. Thus, plunger 74 is a
fuel valve to the engine.
In order to reduce the pressure in the metering unit and
to maintain a constant datum or reference pressure dif
ferential between the intake manifold (or at the intake
valve) a balance control device 112 is provided in the 70
casing 112. A cylindrical casing 114 with hollow interior
bore 116 is attached on the top 16. Through the closed
top 118 of casing ‘114 passes a control plunger rod 120
which protrudes into the interior 116 of the casing. The
bottom of cylinder 1114 is closed by a movable hollow pis 75
given wheel 42 and at a given angle of vanes 50‘ in the
wheel, the volume of air that ?ows through the air duct
can readily be determined. By knowing the ratio of fuel
to air by weight, the proper amount of fuel can be ad
mitted by controlling the pressure under which the fuel
is delivered through the fuel line 84 to the intake valve.
Intake Valve
The type of valve arrangement preferred in this fuel
distribution system employs a special modi?ed type of
valve seat. As seen in FIGS. 4 and 5, the nozzle 140 is
constructed in the annular seat 141 of the valve 142 by
con?ning a ?at, metal shim, open ring 144 having notches
1415 and being con?ned between a pair of ?at, plain metal
v3,049,111
.
.
6
5
Washers or rings 146, 148 which are screwed to the valve
seat 141 by screws 150. An intake fuel line 152 from the
fuel line 84» connects through the engine block into an
my invention since various changes, alterations, modifi
cations, substitutions, eliminations and variations may be
effected therein without departing from the scope of my
invention defined in the appended claims.
opening 154 leading through the top ring 11-56 downwardly
into the shim 144. According to this arrangement, the
nozzle 140 consists of plurality of extremely thin openings
between rings 146, 148 and fuel forced thereinto is sepa
I claim:
1. In a fuel distribution system for an internal com
bustion engine wherein there are a number of cylinders
rated into a very thin film of only .0005 to 0.001 of an inch
or thereabouts which will be forced into path of air and
with individual fuel delivery ports associated therewith,
will vaporize instantly, lowering the temperature of the
incoming air and increasing the volumetric efficiency of
the cylinder.
When the fuel enters through line 152, it is transferred
a central fuel metering and control unit having an air
10
intake therein connected with said fuel delivery ports,
means in said air intake responsive to the movement of
air to change position therein, a fuel metering element
on said central fuel metering unit having a fuel inlet
through grooves in rings 146, 148 to the nozzles 145' as a
thin ?lm of fuel and not as a jet stream of fuel. ‘There
fore, the fuel will vaporize much quicker than if it were
introduced as a stream. Also, the ?lm of fuel is spread
around the outer periphery of the valve and therefore is
more effectively introduced into the air stream. The
therein, a fuel outlet associated with said metering unit
Balanced Operation
2. In a fuel distribution system for an internal com
bustion engine wherein there are a number of cylinders
Once the cold starting period of operation is over and
the engine warms to operating temperature, as explained
with individual fuel intake delivery ports associated
therewith receiving fuel delivered thereto, a central fuel
metering and control unit having an air intake through
which air is drawn into said engine, an air responsive
member movably mounted in said air intake for move
ment by air therein, a fuel container formed on said fuel
metering unit having fuel contained therein, pump means
for pumping fuel from said container and having fuel
for delivering fuel to said engine delivery ports, fuel
control means in said metering element controlling the
amount of fuel delivered to said fuel outlet, and control
means on said metering and control unit operable by
said means in said air intake to control said fuel control
groove 148 will retain grit and solid particles
20 means in said metering unit in response to the change
With the arrangement of many nozzles 145 in the same
of air in said air intake, a balancing unit with said meter
valve periphery a much greater exposure of fuel in a thin
ing unit, a balancing valve in said balancing unit and
sheet is provided in relation with the amount of air and
connected in one position thereof with the vacuum from
therefore a much lower pressure is required to introduce
said engine to unbalance said metering unit pressure,
and vaporize the fuel than is possible with other well
said valve being operable to the outside pressure in an
known fuel injection systems which employ a jet stream.
other position thereof to continue said imbalance when
The nozzles 145 do not have to be precision made like
said vacuum approaches ineffectiveness, and said suction
conventional high pressure nozzles.
from said engine continuing to unbalance the pressure.
above, the balanced fuel distribution takes place. The
function of the balance control device valve 112 is to re
duce the pressure in the metering unit and to maintain a
small difference of pressure between the intake manifold
(or at the intake valve) and the inside of the metering
unit as would be required for idlings without ?ooding.
This is accomplished in the following manner: When the
outlet means therewith, a metering valve mounted on
engine is started, a vacuum in the intake manifold acts 40 said metering and control unit and having a fuel inlet
on the piston 122 and raises the piston 122 aligning the
means in communication with fuel delivered from said
vacuum ports 124, 129 (FIG. 6) and reducing the pres
outlet of said pump, means operable with said valve in
sure in the metering unit. When the difference in pressure
response to movement of said air responsive member to
is equal to the weight of the piston 122 plus the force ex
actuate said valve in one position of movement to open
erted on the piston by the spring 133 the piston 122 starts 45 said valve for more fuel delivery to said engine and to
downwardly to the neutral position, or the piston 122
resist movement of said valve in the other direction of
may move down far enough to align the port 130‘ ex
movement thereof, said valve being in fuel delivery com
posed to the atmosphere (FIG. 3 position) thereby equal
munication with fuel outlet means to each of said indi
izing the desired difference in pressure.
vidual engine fuel intake delivery ports, fuel return
When the pressure difference between the intake mani 50 means on said valve actuable ‘by said valve to return
fold and the atmosphere is not sufficient to supply the
excess fuel to said metering unit fuel container in re—
proper amount of fuel (as would occur with a partly
sponse to lower fuel demand indicated by said air re
open or wide open throttle) then the gear pump 20 af
sponsive member, said valve normally receiving a con—
fects the fuel flow. The gear pump 20 is driven at some
tinuous flow and supply of fuel therein and transferring
thing less than engine speed (one-half in some cases) and
same through the fuel outlet means with excess fuel
has the capacity of delivering twice the amount of fuel
simultaneously being returned to the fuel container, in
required at top speed.
response to the movement of the air responsive member,
Fuel is delivered from the gear fuel pump 20‘ to the
and a balancing unit on said metering unit for maintain
plunger 74 by the conduit 30. The supply ports 78 are
ing a pressure difference between said unit and said fuel
always aligned for any position (up or down) of the 60 intake in the engine, a valve member in said balancing
plunger so that when the butterfly valve 38 is closed, then
unit responsive to suction in said air intake to maintain
the torque on the shaft 44- becomes zero; the pressure of
fuel flow where there is little air flow.
the bellcrank 90, arm 94 becomes zero; and the fuel pres
sure from the gear pump forces the plunger 74 up shut
ting off the fuel supply to the feed line 184 thereby open
ing the discharge ports 86 in the plunger to the metering
unit. Simultaneously, bar 132 is raised by plunger 74
causing piston 122 to move upwardly thereby aligning
3. In a fuel distribution system for an internal com
bustion engine wherein there are a number of cylinders
with individual fuel delivery ports associated therewith
receiving fuel delivered thereto, a central fuel metering
and control unit having an air intake through which air
is drawn into said engine an air responsive member
movably mounted in said air intake for ‘movement by air
the vacuum ports 124, 129 and holding the bar 132 and
the plunger '74 up until pushed down by the bellcrank 90. 70 therein, a fuel container formed on said fuel metering
Therefore, when the engine is driven by the vehicle (as
unit adapted to have fuel contained therein, a pump
when coasting) the fuel supply to the motor is shut 05?.
means having a fuel intake therewith from said fuel con
While I have shown and described in detail one pre
tainer, a fuel outlet on said fuel pump means, a meter
ferred form of my invention, this is by way of illustration
ing cylinder mounted on said metering unit in substan
only and is in no way to be treated as any limitation on‘ 75 tially upright position and having an open top, an open
3,049,111
1
inlet formed therein from said pump outlet and an open
outlet formed therein and connected with said fuel de
open said valve for more fuel delivery to said engine and
to resist movement of said valve in the other direction
livery ports in said engine, a hollow metering plunger
of movement thereof, said valve being in fuel delivery
positioned for movement in said cylinder, a spring sup
communication with fuel outlet means to each of said
individual engine fuel intake ports, fuel return means on
said valve actuable by said valve to return excess fuel
to said metering unit fuel container in response to lower
porting said metering plunger in said cylinder, an inlet
formed in said plunger to the interior thereof and in
communication with said inlet in said cylinder, an outlet
formed in said plunger from the interior thereof and in
fuel demands indicated by said air responsive members,
said valve normally receiving a continuous ?ow and sup
from said cylinder to the fuel delivery, an over?ow out 10 ply of fuel therein and transferring same through the
fuel outlet means with excess fuel simultaneously being
let formed in said plunger adjacent the top thereof and
returned to the fuel container, in response to the move
in certain positions being in communication with said
ment of the air responsive member, a balancing unit on
open top of said cylinder, control means operable by said
said metering unit for maintaining a pressure difference
air responsive means and being in engagement with the
between said unit and said fuel intake in the engine, a
top of said plunger to selectively push same in or out of
valve member in said balancing unit open in one direc
said cylinder thereby to bring said outlet openings and
tion to the‘suction from said engine through said air in
over?ow openings selectively more or less in communi
take, said valve member being opened to the atmosphere
cation, the fuel from said pump ?lling said plunger and
in response to movement to the suction effect, whereby
?owing from said outlet therein with excess ?owing from
when there is insufficient air moving through said air
said over?ow and said plunger moving in response to
responsive member said balancing valve operates be
said control means to increase the outlet opening be
tween suction balance and atmospheric balance to main
tween said cylinder and plunger in response to the move
tain a pressure difference between said metering unit and
ment of said air responsive member to control said fuel
certain positions being in communication with the outlet
supply.
4. In a fuel distribution system for an internal com
said engine intake valves.
25
6. In a fuel distribution system for an internal com
bustion engine wherein there are a number of cylinders
bustion engine wherein there are a number of cylinders
with individual fuel intake delivery ports associated
therewith receiving fuel delivered thereto, ‘a central fuel
metering and control unit having an air intake through
which air is drawn into said engine, an air responsive
member movably mounted in said air intake for move
ment by air therein, a fuel container formed on said fuel
with individual fuel inake delivery ports associated there
with receiving fuel delivered thereto, a central fuel meter
ing and control unit having an air intake through Which
air is drawn into said engine, an air responsive member
movably mounted in said air intake for movement by air
therein, a fuel container formed on said fuel metering
unit adapted to have fuel contained therein, pump means
for pumping fuel from said container and having fuel
outlet means therewith, a metering valve unit mounted
on said metering and control unit and having a valve
metering unit adapted to have fuel contained therein,
pump means for pumping fuel from said container and
having fuel outlet means therewith, a ?oating metering
valve mounted on said metering and control unit and
having a fuel inlet means in communication with fuel
casing with a ?oating valve plunger therein, a fuel inlet
delivered from said outlet of said pump, means operable
means in communication with said ?oating plunger to
with said valve in response to movement of said air re
sponsive member to actuate said valve in one of two di
receive fuel delivered from said outlet of said pump,
means operable with said valve ?oating in response to
movement of said air responsive member to actuate said
rections of movement to open said valve for more fuel
floating valve in one of two directions of movement to
delivery to said engine and to resist movement of said
valve in the other direction of movement thereof, said
open said valve for more fuel delivery to said engine and
to resist movement of said valve in the other direction
valve being in fuel delivery communication with fuel
of movement thereof, said valve being in fuel delivery
outlet means to each of said individual engine fuel in
take ports, means urging said ?oating valve to normal
position, fuel return means on said valve iactua'ble by said
valve to return excess fuel to said metering unit fuel
container in response to lower fuel demand indicated by
communication with fuel outlet means to each of said
individual engine fuel intake ‘delivery ports, resilient
means operable with said valve to balance said valve
actuation means to return excess fuel to said metering
said air responsive member, said valve normally receiv 50 unit ports, fuel return means on said valve actuable by
ing a continuous ?ow and supply of fuel therein and
said valve to fuel container in response to lower fuel de
transferring same through the fuel outlet means with
excess fuel simultaneously being returned to the fuel
container, in response to the movement of the air re
sponsive member, and a balancing means on said meter 55
mands indicated by said air responsive member, said
valve normally receiving a continuous ?ow and supply
of fuel therein and transferring same against said plunger
through the fuel outlet means with excess fuel simul
ing unit for maintaining a pressure difference between
taneously being returned to the fuel container, in re
said unit and said fuel intake in the engine, a valve
means in said balancing unit open in one direction to
sponse to the movement of the air responsive member, a
balancing unit on said metering unit for maintaining a
pressure difference between said unit and said fuel intake
the suction from said engine through said air intake.
5. In a fuel distribution system for an internal com
60 in the engine, a valve member in said balancing unit open
bustion engine wherein there are a number of cylinders
with individual fuel intake delivery ports associated
therewith receiving fuel delivered thereto, a central fuel
metering and control unit having an air intake through
which air is drawn into said engine, an air responsive 65
member movably mounted in said air intake for move
ment by air therein, a fuel container formed on said fuel
metering unit having fuel contained therein, pump means
in one direction to the suction from said engine through
said air intake, said valve being opened to the atmos
phere in responsive movement to the suction effect in
said air intake, and means operable by said balancing
valve to balance said suction by atmospheric pressure
thereby maintaining a pressure differential between said
metering unit and said engine intake when there is little
air moving through said air intake occur during idling
for pumping fuel from said container and having fuel
operation.
outlet means therewith, a metering valve mounted on 70
7. In a fuel distribution system for an internal com
bustion engine wherein there are a number of cylinders
said metering and control unit and having a fuel inlet
means in communication with fuel delivered from said
outlet of said pump, means operable with said valve in
response to movement of said air responsive member to
with individual fuel delivery ports associated therewith
receiving fuel delivered thereto controlled by a throttle
control, a central fuel metering and control unit having
actuate said valve in one of two actions of movement to 75 an air intake through which air is drawn into said engine,
3,0494 1 1
if)
a shaft mounted in said air intake, a blade mounted on
in response to more air movement and to decrease said
over?ow in response to a decrease in air movement there
by supplying more fuel When demand is made and less
fuel when indicated, a fuel balancing unit mounted on
said metering unit comprising a hollow cylinder mounted
said shaft movable in response to the air passing there
against, a fuel container formed on said fuel metering
unit adapted to have fuel contained therein, a pump
mounted on said fuel metering unit having a fuel intake
therewith from said fuel container, a fuel outlet on said
fuel pump, a meten'ng cylinder mounted on said metering
substantially upright Within said closed fuel area and
having ‘an atmosphere inlet and a vacuum outlet formed
unit in substantially upright position and having an open
therein, a hollow plunger mounted in said cylinder and
having an atmosphere inlet to the interior thereof and
top, an open inlet formed therein from said pump outlet
and having an open outlet formed therein and connected
a vacuum outlet from the interior thereof, a vacuum line
with said fuel delivery ports in said engine, a hollow
to said interior of the plunger from said air supply, said
metering plunger positioned for movement in said cyl
plunger being movable in said cylinder from a position
inder, a spring supporting said metering plunger in said
where said vacuum ports align to the inside of said fuel
cylinder, an inlet formed in said plunger to the interior
area thereby bringing said vacuum ports into communica
thereof and in communication with said inlet in said 15 tion with said vacuum from said air supply and to other
cylinder, an outlet formed in said plunger from the in
positions where said vacuum ports are closed from each
terior thereof and in certain positions being in communi
other and to a position where atmosphere is admitted into
cation with the outlet from said cylinder to the fuel
said plunger and into said fuel area, a connecting member
delivery, an over?ow outlet formed in said plunger ad
pivotally connected with said balancing plunger and on
jacent the top thereof and in certain positions being in
said unit and having a portion thereof engaging said
communication with said open top of said cylinder, a
metering plunger tending to hold same in more return
shifting rod mounted on said shaft, a bell crank lever
and less fuel supply position when there is little air
mounted on said unit and having one arm thereof con
moving through said air supply thereby maintaining
nected ‘with said shifting rod, the other arm of said bell
‘a difference in pressure between said metering unit and
crank being in engagement with the top of said plunger 25 said engine intake, said fuel balancing unit thereby supply
ing fuel to said engine when there is little demand and
little m'r moving through said air intake, said metering
plunger controlling the supply of fuel to said engine in
to selectively push same in or out of said cylinder thereby
to bring said outlet openings and over?ow openings se
lectively more or less in communication, the fuel from
said pump =?lling said plunger and ?owing from said out
let therein with excess ?owing ‘from said over?ow and 30
said plunger moving to increase the outlet opening be
response to the movement of air through said air intake
to supply more or less fuel as demanded by said engine
in response to throttle operation.
10. In a fuel distribution system for an internal com
bustion engine wherein there are a number of cylinders
tween said cylinder and plunger in response to the move
ment of said bell crank operated by said air movement
and to increase said over?ow in response to a decrease in
with individual fuel delivery ports associated therewith
air movement thereby supplying more fuel when demand 35 receiving fuel delivered thereto, controlled by a throttle
is made and less fuel when indicated by said operating
conditions, and a fuel balancing means responsive to a
vacuum in said air intake to maintain a difference in
control, a central fuel metering and control unit having
an air intake through which air is drawn into said engine,
a shaft mounted in said air intake, a blade mounted on
pressure between said metering unit and said engine in
said shaft movable in response to the air passing there
take valves thereby supplying fuel when there is little 40 against, a fuel container formed on said fuel metering
demand ‘for same and without oversupplyin-g the fuel to
the engine.
8. The device in claim 7 wherein said fuel balancing
unit has a balancing fuel valve member therein, a suction
conduit from said air intake to said balancing fuel valve
member to move same in one direction in response to
the vacuum in said air intake, and an outlet conduit con
nection to the ‘atmosphere to balance said vacuum to
maintain a difference in pressure between said metering
unit and said intake valve in said engine.
9. ‘In a fuel distribution system for an internal com
bustion engine wherein there are a number of cylinders
unit adapted to have fuel contained therein, a pump
mounted on said fuel metering unit having a fuel intake
therewith from said fuel container, a fuel outlet on said
fuel pump, a metering cylinder mounted on said metering
45 unit in substantially upright position and having an open
top, an open inlet formed therein from said pump outlet
and an open outlet formed therein and connected with
said fuel delivery ports in said engine, a hollow metering
plunger positioned for movement in said cylinder, a spring
supporting said metering plunger in said cylinder, an inlet
formed in said plunger to the interior thereof and in com
munication with said inlet in said cylinder, an outlet
with individual fuel intake delivery ports associated there
formed in said plunger from the interior thereof and in
with receiving fuel delivered thereto, a central fuel meter
certain positions being in communication with the out—
ing and control unit having an air intake through 'which
let from said cylinder to the fuel delivery, an over?ow
air is drawn into said engine, an air responsive member 55 outlet formed in said plunger adjacent the top thereof and
movably mounted in said air intake for movement by air
in certain positions being in communication with said open
therein, a fuel container formed on said fuel metering
top of said cylinder, a shifting rod mounted on said shaft,
unit adapted to have fuel contained therein, pump means
a bell crank lever mounted on said unit and having one
for pumping ‘fuel from said container and having fuel
arm thereof connected with said shifting rod, the other
outlet means therewith, a metering valve mounted on
arm of said bell crank being in engagement with the
said metering and control unit having an inlet which re
top of said plunger to selectively push same in or out of
ceives fuel from said pump means outlet, said metering
said ‘cylinder thereby to bring said outlet openings and
valve having fuel outlet means for delivering fuel to said
over?ow openings selectively more or less in communica
engine intake ports and having fuel return means ‘for re
tion, the fuel from said pump ?lling said plunger and
65
turning fuel from said valve to said fuel container, said
?owing from said outlet therein with excess ?owing from
valve being operable to increase said fuel supply through
said outlet and to diminish said fuel returned through said
fuel return and vice versa thereby supplying more or less
said over?ow and said plunger moving to increase the
outlet opening between said cylinder and plunger in re
sponse to the movement of said bell crank operated by
70 said air movement and to increase said over?ow in re
responsive member and engageable with said metering
sponse to a decrease in air movement thereby supplying
valve selectively to move said valve selectively to increase
more fuel when demand is made and less fuel when indi
said ‘fuel supply in response to a larger movement of air
cated, a fuel balancing unit mounted on said metering
and to decrease when said air movement decreases, said
unit comprising a hollow cylinder mounted substantially
valve thereby being actuated to decrease said fuel return 75 upright within said closed fuel area and having an atmos
fuel to said engine, control means operable by said air
3,049,11 1
ll
12
phere inlet and a vacuum outlet formed therein, a hol
said unit and having one arm thereof connected withsaid
low plunger mounted in said cylinder and having an at
shifting rod, the other arm of said bell crank'being in en
mosphere inlet to the interior thereof and a vacuum out
let from the interior thereof, a vacuum line to said in
gagement with the top of said plunger to selectively push
terior of the plunger from said air supply, said plunger
let openings and over?ow openings selectively more or
being movable in said cylinder from a position where said
vacuum ports align to the inside of said fuel area thereby
bringing said vacuum ports into communication with said
vacuum from said air supply and to other positions where
less in communication, the fuel from said pump ?lling
to supply more or less fuel as demanded by said engine in
area thereby bringing said vacuum ports into communi
cation with said vacuum from said air intake and to other
positions where said vacuum ports are closed from each
other and to a position where atmosphere is admitted into
said plunger and into said fuel area, a connecting member
same in or out of said cylinder thereby to bring said out
said plunger and ?owing from said outlet therein with
excess ?owing from said over?ow and said plunger mov
ing to increase the outlet opening between said cylinder
said vacuum ports are closed from each other and to a 10 and plunger in response to the movement of said bell
crank operated by said air movement and to increase
position where atmosphere is admitted into said plunger
said over?ow in response to a decrease in air movement
and into said fuel area, a connecting member pivotally
thereby supplying more fuel when demand is made and
connected with said plunger and on said unit and having
less fuel when indicated, a fuel balancing unit mounted
a portion thereof interposed between said bell crank and
on said metering unit comprising a, hollow cylinder mount
engaging said metering plunger tending to hold same in
ed substantially upright within said closed fuel area and
more over?ow and less fuel supply position when there
having an atmosphere inlet and vacuum outlet formed
is little air moving through said air supply thereby main
therein, a hollow plunger mounted in said cylinder and
taining a difference in pressure between said metering unit
having an atmosphere inlet to the interior thereof and a
and said engine intake, said fuel balancing unit thereby
supplying fuel to said engine when there is little demand 20 vacuum outlet from the interior thereof, a vacuum line
to said interior of the plunger from said air intake, said
and little air moving through said air intake, said meter
plunger being movable in said cylinder from a position
ing plunger controlling the supply of fuel to said engine
where said vacuum ports align to the inside of said fuel
in response to the movement of air through said air intake
response to throttle operation.
11. In a fuel distribution system for an internal com
bustion engine wherein there are a number of cylinders
with individual fuel delivery ports associated therewith
receiving fuel delivered thereto controlled by a throttle,
pivotally connected with said balancing plunger and on
a central fuel metering and control unit having an air 30 said unit and having a portion thereof interposed between
said bell crank and engaging said metering plunger tend
intake through which air is drawn into said engine, a
ing to hold same in more over?ow and less fuel supply
shaft mounted in said air intake, a blade mounted on
position when there is little air moving through said air
said shaft movable in response to the air passing there
supply thereby maintaining a difference in pressure be
against, a fuel container formed on said fuel metering
tween said metering unit and said engine intake, said fuel
unit adapted to have fuel contained therein, a pump
balancing unit thereby supplying fuel to said engine when
mounted on said fuel metering unit having a fuel intake
there is little demand and little air moving through said
therewith from said fuel container, a fuel outlet on said
air intake, said metering plunger controlling the supply
fuel pump, a metering cylinder mounted on said meter
of fuel to said engine in response to the movement of air
ing unit in substantially upright position and having an
open top, an open inlet formed therein from said pump 40 through said air intake to supply more or less fuel as de
manded by said engine in response to throttle ope-ration.
outlet and an open outlet formed therein and connected
with said fuel delivery ports in said engine, a hollow
metering plunger positioned for movement in said cyl
inder, a spring supporting said metering plunger in said
cylinder, an inlet formed in said plunger to the interior 45
thereof and in communication with said inlet in said cyl
inder, an outlet formed in said plunger ‘from the interior
thereof and in certain positions being in communication
with the outlet from said cylinder to the fuel delivery,
an over?ow outlet formed in said plunger adjacent the 50
top thereof and in certain positions being in communica
tion with said open top‘ of said cylinder, a shifting rod
mounted on said shaft, a bell crank lever mounted on
4 References Cited in the ?le of this patent
UNITED STATES PATENTS
974,853
1,034,273
1,931,541
1,931,542
2,387,277
2,827,030
2,876,755
2,884,918
Bock _________________ __ Nov. 8, 1910
Metcalfe _____________ __ July 30, 1912
Hesselman ____________ __ Oct. 24, 1933
Hesselman ____________ __ Oct. 24, 1933
L’Orange ____________ __ Oct. 23, 1945
Strurnbos ____________ __ Mar. 18, 1958
Gold ________________ __ Mar. 10, 1959
Klug _________________ __ May 5,1959
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