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Патент USA US2112568

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March 29, 1938.
A. H. HooPs
2,1 12,568
CHARGE FORMING MANIFOLD
Filed Aug. C51, 1937
4 sheets-sheet 1
March 29, 1938.
2,112,568
A. H. Hoops
CHARGE FOBMING MANIFOLD
Filed Aug. 5l, 1937
4 Sheets-Sheet 2
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_Ilmlll
,.In,
Summa/13b
March 29, 1938.
A. H. HooPs
2,112,568
CHARGE FORMING MANIFOLD
Filed Aug. 5l, 1937
4 Sheets-Sheet Z
nml."
I
wie@
March 29, 1938.
A_ H_ HQOPS
2,112,568
CHARGE FORMING MANIFOLD
Filed Aug. 5l, 1937
4 Sheets-Shea?I 4
Patented Mar. v29, 1938
" 2,112,568
UNITED STATES PATENT GFFICE
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2,112,563
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CHARGE FoaMING MANIFOLD
.Albert H. Hoops, Savannah, Ga.
.Application August s1, 1937, serial No. 161,842».r `
s claims. (01123-127)
The invention relates to charge forming mani
folds and has as an object to provide an improve
ment in a device of this nature to venable the
operation of an internal combustion engine uti
5 lizing oil heavier than gasoline as a fùel.
It is a further object oi' the invention to pro
vide a device of thelcharacter indicated utilizing
gasoline as the starting fuel and having means
to apply ample heat to a heavier .oil used as a
10 fuel after the motor is warmed up.
It is a further object to provide a device which
will f‘warm up” in a minimum time.
It is a further object to provide an oil heating
manifold in which the exhaust gases 'will have
15 very short and direct paths to the points of ap
plication of heat to the intake passages.
prises two parts, namely, a casting I5 which
may be of cast iron, duraluminum, or the like,
and an intake manifold assembly I6 shown by it
self in Figures 7 and 8 desirably formed of a
metal of high heat conductivity as copper.
5
The casting I5 is shown as formed with ports
I1, I8 adapted to register with the exhaust` ports
of an internal combustion engine.
The device as illustrated is adapted for appli
cation to a six-cylinder engine and as shown the 10
ports I1 at each end of the casting will accommo
date one cylinder each of the engine and they
intermediate ports I8 two cylindersv each. The
casting I5 is formed with openings at I9, 20, 2l
to ñt the projecting conduits 22, 23, 24 of the
intake manifold assembly, the lsaid conduits be
It is a further object to provide a manifold, ing placed in the openings I9-2I and welded
causing low back pressure of exhaust gases on therein. The interior of the casting I5 is shown
the motor, and reducing noise of explosion. ‘
, ‘
as divided into two portions by means of walls
20
It is a further object to provide means enabling ‘25, 26, and 21.
an accurate control of the temperature applied to
Between the edges 26 and 21 there is placed 204
the fuel whereby correct temperature may be se
a valve seat 28 and an elongated flap‘ valve 29
cured for gasoline alone, heavier oil alone, or any is mounted in bearings 3l), 3I 'to swingvinto the _
percentage of either combined with the- other. open position shown in Figure 6 or into position
25
Further objects of the invention will appear closing the elongated opening in the valve seat 28. 25
from the following -description when read in con->
As shown, the valve 29, desirably of cast iron,
nection with the accompanying drawings showing is cast with a stiffening rib 29' to prevent parp
30
an illustrative embodiment of the invention and
ing of ,the valve under'inñuence of the heat of
wherein:-
the exhaust gases.
-
Fig. l is a side elevation of an engine equipped
with a, manifold of the invention, the cover plate
of the latter being omitted;
Fig. 2 is a plan view of the structure of Fig. l;~
Fig. 3 is a detail horizontal section on line 3-3,
35
Fig.
1;
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Fig. 4 is a horizontal section of the manifold
only on line 4--'-4, Fig. 1;
Fig. 5 is an end View of the manifold seen from
the right of Fig. 1;.
40
Fig. 6 is a vertical section on line 6--8, Fig. 4;
Fig. 7 is a plan view of the intake manifold por
tion of the device partly broken away;
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Fig. 8 is a side elevation of the structure of
Fig. 'l partly broken away;
45
Fig. 9 is a plan View, and Fig. 10 is a side eleva
tion of a baille assembly.
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Fig. 12 is an end view of the structure shown
< 50 in Figs. 9 and 10;
and
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Fig. 14 is a diagrammatic view of the fuel pump
55
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When the valve 29 is closed, the exhaust gases
pass downwardly to the elongated chamber 35
and out through the port 36, Figures 4 and '6,
40
which is also connected to the same exhaust pipe.
To control the valve 29 there is shown a rod 31
leading from the dash to bell crank 38 pivoted
at 39 upon a portion of the casting I5, the re
45
by link 4I),to an arm 4I rigidly connected to a
sliding rod 42 connected at its lower end to arm
43 rigid with the valve 29.
The intake manifold I6_is shown as formed of 50
A.
- Fig. 13 is a side elevation of the exhaust valve;
circuits.
ing to the usual muiiler.
mainingv end of the bell crank being connected
~
Fig. 11 is a side elevation of another form ot
baille;
The exhaust ports I'I and' I8 are each formed 30
with a wall 32 curving downwardly to meet the
wall 21 whereby when the valve 29 is in the open
position of Figure 6 the exhaust gases will all
ñnd access to the enlarged chamber 33 in which
the intake manifold I6 is located, said exhaust 35
gases passing in said chamber 33 to an exhaust
port 34 to be connected to an exhaust’pipe lead
i
As shown the main portion of the device com
an elongatedconduit portion 44 having the con
nection at one end by means of elbows 45, 46
with' conduit 22 having an opening in its side con
nected with a conduit 41 connected by elbows
48, horizontal portion 49, elbow-50, upwardly ex
a
2
2,112,568
The casting I5 is shown as formed with a cover
tending portion 5I, elbow 52, horizontal portion
elbows 56, 51 with extension 24. The purpose
of the form of conduits shown is to provide paths
of equal length for fuel' to each port whereby
to supply fuel ofthe same temperature to each
plate receiving flange 11 to which cover plate 18
is applied in use. Asbestos lagging of substantial
thickness is provided upon‘the exterior of casting
I5 and cover plate 18.
To remove the valve 29 from the chamber 38
without removing the intake assembly, an open
ing 86 is provided in casting l5 and provided with
cylinder.
a closure plate 81.
58, elbows 5_4 and 55 with conduit 28.
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The remaining end seen at the right of Figures
7 and 8 of conduit 44 is shown as connected by
10
,
To supply fuel to _the carburetors electrically
'I'he entire fuel for the different intake ports
is delivered to the conduit 44 through a port 58
driven pumps 19, 80, one for each carburetor, are
provided. A switch 8| is shown having contacts
connected by the vertical conduit with the valve
chamber 59 to which fuel is supplied by the car
82, 88 one for control of each pump and a mov
.u
able contact 84 controlled in common with the
buretors 80, 8l.
Seating upon the upper portion of the cast
15
operating link 85 for valve 88. The Width of 15
ing l5 is the valve housing 92 formed of two . contact 84 is such that both pumps 19, 80 will be
castings 68, 54, the former being cast with a in operation at all times when a combination of
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vsocket 65 into which a projecting flange 88 on fuels is being drawn.
To cause the valve 98 to b`e firmly pressed to
casting 64 telescopes.> The two castings 68 and
either seat when using one fuel alone, a. past cen 20
20 $4 are secured together by means of cap
ter spring device 85 is utilized.
screws 81.
dash of the vehicle.
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It is obvious that to guide the operator any heat
'I‘he carburetor 80 is coupled to the casting 68
and -the carburetor 8| to the casting 64 so that
both carburetors are connected to deliver to the
valve chamber 59 in which slides the 4valve A88 to
seat alternately with seat 89 or seat 10. The
valve- 88 is controlled by link 1I leading to the
indicator as a pyrometer may be placed in the in
take manifold as in “24”, with an indicator“ on
the dash of the vehicle. The location of the por 25
tion 44 of the intake assembly directly in front
of the elongated port of valve 29, and the loca
tion of the portions 45 and -49 in the path of flow
of the exhaustgases make ample quantities of
heat available to be applied to the fuel mixture.
The diameters and lengths of the intake passages
~
One of the carburetors 69 is to be connected tothe source of supply of gasoline and -the other
thereof to a source of supply of» heavier oil and
the valve 88 will be seated upon the appropriate . maybe so chosen, in the presence of the heat
seat to deliver only gasoline when the motor is available, to secure amr maximum desirable heat
cool. As the motor warms up the valve may be of the fuel mixture. 'I'he operator can therefore
shifted to draw a mixture of gasoline and heavier by adjustment of the valve 29 provide optimum 35
oil or when fully warm, the valve may be placed v _heat conditions for the fuel used.
The invention may be adapted to engines of
against the seat to close off the supply of gaso
line- to deliver only oil to be used as fuel to the
motor. At any time when service requires, the
40 combination of two fuels may be fed to the motor.
The two carburetors 88, 8l may obviously be
controlled by a single connection to the accelera
tor pedal of the vehicle and the two butterfly
other than six cylinders by appropriate changes
in the number of ports and of int'ake assembly
passages in an obvious manner.
valves will both be opened simultaneously or con
45
spirit
versely closed simultaneously without effect upon
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thereof.
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I claim:
1. A charge forming manifold comprising, in
combination: a shell having openings to register
with the respective inlet and exhaust ports of an
internal combustion engine; internal walls in said
shell dividing the interior thereof into a heat o
the nature of the fuel supply otherwise than as
it is controlled by the valve 88.
v
Minor changes may be made in the physical
embodiment of the’invention within the scope of
the appended claims without ldeparting from the
_
The manifold I8 is shown as provided in its
conduit portion 44 with a rod 1I' carrying baille
plates 12, 18, the arcuate portions 14, 15 of the
50 baille plates contacting with the inner wall of
chamber and a bypass chamber; an intake-man
ifold assembly housed in said heat chamberformed withI intake passages secured in the in
the conduit.
In the remaining course of the passage of fuel
take-port-registering openings of the shell;
through the portions of the intake manifold,
means to introduce an explosive lmixture of air ,
55 bailles of the nature shown in Figure 11 at 18 are
provided whereby to provide a tortuous passage
and fuel to said intake-manifold assembly; one -
for the fuel to submit the same to a maximum
of said internal walls formed with a port to pass
exhaust gases to said heat chamber; valve means
to at will cause the exhaust gases to enter the
desired one of said chambers; said shell formed 60
with an outlet port> from each of said chambers
' and means to at will feed an explosive mixture of
heating eifect. It will be seen that the path of
exhaust gases into the heating chamber 80 is di
60 rect from the exhaust ports of the motor through
the elongated valve opening controlled by valve
29, and when these exhaust gases are directly delivered to the large chamber 88, or 85, a minimum y air and a chosen one of a plurality of. fuels to said
intake manifold assembly.
_
of back pressure upon the motor will be pro
duced. This reduction in pressure will cause the
mufller of the motor to be more effective and will
reduce the Aexplosive noise of the running of the
motor.
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The intake connections between the portions 22,
70 29, 24 of the intake manifold and the conduit
‘portion 44 thereof are designed to provide a sub
stantially uniform heating effect upon the fuel
delivery to each of the cylinders of _the motor
which is an important feature of4 the invention
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75 for smooth operation of the motor.
2. A _charge forming manifold comprising, in
combination: a shell having openings to register
with the respective intake and exhaust ports of
an internal combustion engine; internal walls
dividing the interior of said shell into heat and `
,bypass chambers; one of said walls formed with
an ~elongated port extending past said exhaust
openings to provide direct flow from a plurality
of said openings into said heat chamber; ajvalve
to control said port and by closure thereof to di
rect exhaust gases to said bypass chamber; an in
2,112,568
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mixtures of different character to each of said
opposite facing ports; an electric pump to supply
conductivity housed in said heat chamber in front
fuel to each of said carburetors; switch means
of. said elongated port, and having passages se
cured in said intake-port-reglstering openings; to control the motors driving said respective
take assembly formed of material of high heat
_ and means to at will feed an explosive mixture of
air and gasoline or oil to said intake assembly.
3z A charge forming manifold comprising, in
combination: a shell formed with openings to
register with the intake and exhaust ports of an
10 internal combustion engine, internal walls divid
ing said shell into a heat chamber and a bypass
chamber; an intake assembly housed in said heat
chamber comprising a conduit to be placed into
communication with carburetion apparatus; con
15 duits to be placed into communicationrespec
tively with the said intake openings and conduit
means connecting each of the said last named
conduits with the carburetor conduit formed to
provide paths for fuel of equal length from the
20 carburetor conduit to the respective intake con
duits; one of said internal Walls provided with a
port; a passage from each of said exhaust-port
registering openings leading to said port to con
duct exhaust gases to said heat-chamber; a valve
controlling said last named port to direct the
exhaust gases into said bypass chamber and
means to at will feed an explosive mixture of air
and either gasoline or heavier oil to said intake
assembly.
30
4. A charge forming manifold comprising, in
combination: a shell having openings to register
with the intake and exhaust ports respectively of
an internal combustion engine; an interior ver
tical longitudinal wall spaced from said openings;
other internal walls extending from the lower
edge of said vertical wall to completely divide
said shell into a heat chamber and a bypass
chamber; lateral extensions of said vertical wall
'surrounding the exhaust port registering open
40 ings of said shell; said vertical Wall having an
elongated port extending continuously past a plu
pumps; common means to control said switch
means and said valve whereby when either kind
of fuel is being supplied by its pump with the
valve in full open position for said fuel the re
maining pump is quiet.
6. A charge forming manifold comprising, in 10
combination: means to heat a fuel mixture by
exhaust gases; means to accurately control the
amount of heat applied to said mixture; a plu
rality of carburetors each connected to supply a
different grade of fuel to said heating means;
valve means adjustable to supply at will one
only of said different fuels or any desired per
centage mixture of different fuels; electric pumps
to supply fuel to said carburetors; switch means
to- control said pumps operable in common with 20
the control of said valve means; said switch
means having a slidable contact to bridge con
tacts for each of said pumps in all intermediate
positions of said valve for delivering mixtures of
fuel and in extreme positions of said valve to put 25
out of operation the appropriate pump.
7. A charge forming manifold comprising, in
combination: means to heat a fuel mixture by
exhaust gases; means to accurately control the
amount of heat applied to said mixture; a plu 30
rality of carburetors each connected to supply a
different grade of fuel to said heating means;
valve means adjustable to supply at will one only
of said different fuels or any desired percentage
mixture of dii-ferent fuels; pumps to supply fuels
to said carburetors; means to control said pumps
operable in common with the control of said valve
means; said pump control means including means
to cause operation of each of said pumps in all
intermediate positions of said valve means for 40
delivering mixtures- of fuel, and in extreme posi- ,
tions of said valve to put out of operation the
rality of said exhaust passages to provide a sub
appropriate pump.
stantially direct path for gases from each of said
8. A charge forming manifold comprising, in
exhaust ports to said heat chamber; an elongated
combination: an elongated shell having an open
45 flap valve pivoted adjacent its lower edge to con
trol said port whereby said valve when opened side and a cover plate for closing said side; heat
closes the opening into said bypass chamber and insulating layers covering said shell and said
directs gases to said heating chamber; an intake cover plate respectively; internal wall structure
dividing said shell longitudinally into heat and
assembly housed in said heat chamber and hav
bypass chambers; said shell formed with open
ing
conduit
extensions
secured
in
each
of
said
50
ings to register with the intake and exhaust ports
intake port-registering openings; means to intro
duce at will an explosive mixture of either light respectively of an internal combustion engine;
or heavy fuel and air into said intake assembly; ,intake conduits in said heating chamber formed
with passages in communication with said intake
and means to control said flap valve.
registering openings and a passage for carburetor
5.
A
charge
forming
manifold
comprising,
in
55
combination: a shell having openings to register connection, an elongated valve opening extend
with the intake and exhaust ports of an internal ing past a plurality of said exhaust-port-register
combustion engine; an opening to communicate ing openings; a flap Valve hinged at an edge of
with carburetor apparatus; means dividing the said elongated port to dei-lect gases into said heat
chamber or said bypass chamber at will; said
60. interior of the shell into heat and bypass cham
bers, each of said chambers having an outlet shell formed with an opening at an end opposite
opening to be placed into communication with an said valve structure for removal of the valve
exhaust pipe; an intake assembly of copper piping without disassembly of the structure; said shell
having vopenings from the respective chambers to
housed in said heat chamber and having exten
sions secured in each of said intake-registering be placed in communication with an exhaust pipe
a plurality of carburetors connected to said pas
openings and an extension to be placed in com
munication with carburetor apparatus; a valve sage and fed with fuels of differing boiling points;
chamber seating upon said shell having a valve and means to draw from a chosen one of said
chamber therein provided with opposite ports; a carburetors at Will.
ALBERT H. HOOPS.
70 sliding valve in said chamber to seat upon said
ports alternatively; a carburetor to supply fuel
45
50
60
70
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