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Патент USA US2077764

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April 20, 1937.
T. o. LlLES
v '
Filed Feb. 10, I936
Patented Apr. 20, 1937
' 2,011,164"
v ' Thomas 0. Llles, Detroit,‘Mich., assignor to Liles
‘ ‘ 2 Fuel Vaporizer Corporation, Tyler, Tex, a cor
poration ofvTexas
‘ Application February 10, 1936, Serial No. 63,284
3 Claims.
(or. 257-246)
?lled with a suitable medium 20 for filtering ior
ternal combustion engines and more ‘particularly eign substances such as dust, etc., from the air
,' ‘This invention relates to fuel systems forin
‘ “to the means whereby ‘the temperature of the fuel 1
and air is ‘regulated or controlled in its passage
5 to the carburetor.
A further object of the invention isto provide
A further object is to provide a practical means
for maintaining a quantity of so called low grade
or base fuels such as distillate at~a temperature
near the vaporization point, by utilizing heat from
15 the exhaust of the engine,
the exhaust pipe 22 of ‘an internal combustion
engine as by providing clips 23 for engaging the _
exhaust pipe 22 and ?anged portions '24 o! the
heater. An opening 25 is provided in the exhaust
22 which registers with open ends l4—l4'of sec 10
tions i2-I2 of the heater. The arrow indicates
the direction of normal ?ow of the hot exhaust
gases from the engine. 20 is a butter?y valve,
pivotally mounted as at 21 by which» registering '
openings "-14 and 25 are thermostatically 15
It has long been, known that distillatesand the
like possessed fuel values in excess of gasoline,
opened and closed as the operation requires. 28
however, the demands for smooth running of the
connected to butter?y valve 28 by rod 30. Ther
engine and delivery of its'power have not hereto
mostat 28 is mounted upon pin it which latter
projects thru and is rotatable‘ in its bearing in
inner housing l2, and on its outer end isprovided
with crank 32 which has a rod 32 pivotally at-,,
20 fore been met in a practical manner when burn
ing low grade fuels, due to the‘lack of a suitable
means for controlling the temperature of the
charge. I have provided a practical means for
this purpose, and one which is readily and in
stantly responsive to varying conditions of engine
operation and load demand; also a means readily
adjustable to accommodate fuels whose vaporiza
tion points vary.
Other objects will readily appear and be under
30 stood along with the ones hereinabove enumer
ated by mechanics skilled in the art from the fol
lowing description together with the accompany
ing drawing, wherein:--
. _
Figure 1 is an elevation, partly in section of my
35 1188181‘.
The heater may be conveniently mounted upon 5
novel means'for heating both the fuel-and the
air forming the charge by a common meanspin
which the temperature of the one a?ects that of
10 the other.
as it travels thru passage it into intake 2i of
a conventional carburetor (not shown).
is a thermostat, the outer arm 29 of which is
tached thereto and projecting upwardly thru the
outer housing of the heater and is threaded at its
outer end and there received by adjusting nut 84
by which means thethermostat may be so adjust‘
ed as to cause the butter?y valve to open or close
the openings Il-ll and 2! at the temperatures '
and is there formed into a coil 28' as it extends
downward into the'most intense heat area in the .
element l2 and then leads out as at 38 to. the
Figure 2 is a section along 2-2 of Figure 1.
carburetor where the heatedfuel is mixed with
Figure 3 is an enlarged detail of the upper
the heated air from the outlet 2| of the heater
‘and vaporized for admission into the combustion
chamber of the engine.
portion of Figure 1.
A fuel line 3! leads from a gravity tank lo
cated above the carburetor or from a fuel‘pump
not shown and, enters ‘one of the elements l2
In the several ?gures like references designate
40 similar parts.
III is the heater having an outer member ll,
and inner members l2-l2; the latter being pref
erably joined together at it, open attheir lower
The operation is as follows:
’ Through adjusting nut 34 the- thermostat is
set to cause the butter?y valve to open wide '
into the exhaust manifold to intercept exhaust
ends it and having a communicating passageway gases from‘ the engine when it is started, which
45 -ll near their upper ends for purposes which will Qpassupward’ about the‘fuel coil and the thermo
stat. thence through opening I! and downward
The outer portion II and the' inner portions through the other inner element l2 and back
l2—l2 of heater II are Joined together adjacent , into the exhaust pipe 22. As the temperature
hereinafter more readily appear; ~_
to their lower extremities as by providing a per
50 forated ring member it through which studs l‘!
pass, after being received by convenient openings
in member ll of the heater to'threadedly engage
inner members l2. The perforations i8, permit
air to enter space it between the outer and inner
l6 walllorthaheaterwhichspacemaybepartially
rises in the heater the fuel in the coil will absorb ,
some of this heat to bring its temperature up to so‘
a predeterminedpoint; likewise the air in pas
sage It will absorb heat by conduction and con
vection. As-the engine heats up from the work- - ‘
ing load the‘ thermostat will respond to auto
matically regulate the amount of exhaust gases .
' 2
entering the heater, and thereby control the tem
perature of the fuel and air passing through
the heater to the carburetor.
Since different fuels vaporize at different tem
peratures, it remains only for the operator to
adjust the thermostat to provide for the desired
the passage therefrom of the exhaust gases, the
fuel coil being disposed within the path of travel
of said exhaust gases.
2. A_ charge heater for internal combustion
engines comprising an outermember and an
inner member with an air passage between said
temperature for most ei?cient operation, and ob
tain the maximum power from any given fuel. members; the inner member embracing a liquid
fuel coil anda thermostat and providing a pas
If they fuel used will vaporize at normal at
IO mospheric temperatures the thermostat is ad~ ’ sage‘ communicating directly with the exhaust
of the engine, the fuel coil and thermostat being 10
justed to cause valve 26 to be fully closed Where
upon none of the exhaust gases pass through disposed within the path of travel of said exhaust
gases within the said passage.
the heater. I prefer to mount my heater in or
3. A charge heater for internal combustion en
nearly in an upright position as in this way
15 foreign substances ?ltered'out of the air by the gines comprising an outer member embracing an
medium 20 will have a tendency to fall by gravity inner member with an air passage between the 15
members; the inner member being formed in two
out of the line of passage.
It will be noted that a balanced temperature sections each communicating with the exhaust
between the air and the liquid fuel is obtained. pipe of an internal combustion engine at one of
20 which permits of vaporization of the fuel and its ends and with the other adjacent its oppo
properly mixing it with the air as the two are site end, heat responsive means disposed within 20
the ?rst of the inner members for controlling the
brought together in the carburetor.
What I claim is:
1. A charge heater. for internal combustion
engines comprising an outer member and an in“
her member with an air passage between said
members; the inner member embracing a liquid
fuel coil and communicating directly with the
exhaust of the engine at one end providing for
admission of the exhaust'of the engine thereto
and for-controlling its passage from the other of
.said inner members and a ‘liquid fuel coil dis-_
posed within the first of said inner members and 25
within the line of travel ,of exhaust gases there;
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