US1687918A

US1687918A - Hydrocarbon motor

Info

Publication number: US1687918A
Application number: US331691A
Authority: US
Inventors: Lionel M Woolson
Original assignee: Packard Motor Car Co
Current assignee: Packard Motor Car Co
Priority date: 1919-10-18
Filing date: 1919-10-18
Publication date: 1928-10-16
Anticipated expiration: 1945-10-16

Description

lll

s heater device to insure proper LIONEL Patented Oct. 16, I 1928.

y l UNITED STATES.

v,PATENT OFFICE.

COMPANY, 0F DETROIT, MICHIGAN A CORPORATION 0F MICHIGAN.

HYDROCARBON MOTOR.

Application led October 18T, 1919. Serial No. 331,691.

This invention relates to hydrocarbon motors and particularly to carburetors and mixture making and heating means.

One Aoi* lthe objects of the present invention is to provide 'an efficient means for heating the mixture passing from the motor carburetor .to the motor cylinders..

Another object of the invention is to supply a properly proportioned mixture of gasoline, or other fuehand air to a combustion burning of said mixture and the'consequent heating of the mixture passing from the main carburetor to the motor.`

Another object of the invention is to provide means for withdrawing mixture from the maincarburetor of the motor for a combustion heater device adapted to heat the mixture passing from to the motor cylinders. l

Another object of the invention is to provide a check valve between the carburetor supplying the combustion heater and the combustion heater chamber, re into the carburetor. K

Another object of the invention is to provide a novel form of auxiliary carburetor for supplying mixture to the combustion heater of a hydrocarbon motor. l

Other objects and uses of the invention will appear from taken infconnection with the drawings which form a part of this specification and 1n which Figure 1 is a vertical section through a carburetor and heating. device built in accordance with my invention; i

Figure 2 is a side elevation of the upper part of the device shown in Figure 1;

Figure 3 is a section similar to that oi Figure 2, showing another form of auxiliary carburetor and float chamber; and

Figure 4 is an enlarged transverse sectio on the line 4-4 of Figure 1.'

Referring to the drawings, 10 represents generally a carburetor adapted to supply mixture to the cylindersof' a hydrocarbon motor. It comprises a mixing chamber 11'at the outlet end of which is arranged a throttle valve 12 which may be manually controlled to. thereby determine the amount of mxture which shall pass to the motor. The carburetor 10 also comprises a mixing tube 13 of venturiy form arranged .in the lower part of the chamber 11. A, fuel nozzle 14 the main carburetor to prevent back-- the following description.

` take pipe -projects upwardly into the tube 13 an 1s supplied with gasoline or other liquid gliel through a passage 15 from a float chamber,

16, in which chamber a float 17 controls a valve 18 througha pair of small weighted levers 19. The chamber 16 receives the liquid fuelfrom a supply pipe 20 and the valve 18 controls a port 21 connectin the tube 2O with the interior of the float camber. The upper opening in the float chamber is closed by a removable cover 22 in` which the levers 19 are supported as shown.

The main carburetor 10 also has main and

auxiliary air intakes

23 and 24 respectively, the former communicating with the. lower end of the tube 13 and the latter communieatingl directly with the lower part of the mixing chamber 11 which surrounds the tube 13.'

This form of carburetor as described above is in general use and is known as the Pack..

ard carburetor. In operation the suction of the motor draws air through the intakes23 and 24 into the mixing chamber 11. Fuel is' also drawn through the nozzle 14 and mixes -with the air passing through the tube 13.

In the upper part of the pipe25 is an l opening 26 and mounted directl over'this opening and secured to the inta e pipe, as by bolts 27, is a combustion heater device 28.

The adjacent wall of this device is cut away to form an opening 29 opposite the opening 26 and a plate 30 of corrugated cross section is clamped between the device 28 and the inso that it forms a wall or separation etween the interior of the intake and the interior of theheater device pipe This corrugated wall permits of rapid transfer of heat from the heater device to the gases in the intake pipe.

The combustion beater device has an inlet 55 check valve '48 which will 31 and an outlet 32, at opposite ends, and screens 33 and 54 are arranged over the inlet and outlet respectively to prevent backiirethrough the inlet and to prevent fire 5 passing o1 t through the out-let. The screen 33 also assists in breaking up the mixture before it reaches the vicinity of the spark plug. The outlet 32 is connected to the interior of the pipe or conduit 25 above the throttle valve 12 by a pipe 35 so that the suction of the motor is communicated to the interior of the heater device 28 and any burnt gases therein are carried into the conduit 25 to thereby heat the mixture passing l5 through said conduit.

The heater device 28 has anigniter, shown in the form of a spark plug 36, the terminals 37 of which, Whenvconnected to a suitable battery, will supply a spark for igniting a mixture-in said heater device.

The heater device 28v is'also formed with an air inlet port 38 which may be controlled either by a hand operated valve 39 or a spring controlled automatic valve 40. The

valve 39 maybe operated alone, as by locking the valve 40 in inoperative position, or it may operate in conjunction with the valve 40 so that the valve 39 will supply some air to the port 38` and the valve 40 will supply ,30 additional air as the suction increases. Also the valve 39 may be closed and the valve 40 only operated to supply air to the porty 38. It will be understood that the air supplied through the port 38 will be for the purpose of thinning the mixture supplied to the device 28 by the meansV Hereinafter described.

Two independently operating means are illustrated in Figure 1 forisupplying mixture to the combustion chamber of the heater device 28. v@ne of these means comprises va small or auxiliary carburetor 41 which will be formed` as an integral part of the casting of the float chamber 16. An extension in the form of a well 42 isconnected to the interior of the float chamber and at one side thereof and a fuel nozzle 43 extends upwardly from said well into an air chamber 44. Extending downwardly into the air chamber 44 and around the upper end of the nozzle 43 is an outlet tube 45, the interior of which forms a mixing chamber 46 for the air and gasoline entering said chamber. An air port 47 ysupplies air to the chamber '44 and the outlet 'tube 45 is provided with a prevent backfire into the carburetor.

The outlet 45 connects through a pipe 49,

a valve 50 and a pipe 51 with `the inlet 31 ofthe combustion chamber of the heater 28,

'6o the valve 50 being shown as connecting the

pipes

49 and 51.

1t will be understood that the suction in the heater 28, due to the connection 35 with the intake pipe, will draw mixture through the

pipes

49 and 51 from' theauxiliary carbu-l retor 41 and'this mixture will be ignited by the igniter 36. It may be a richer mixture .30 to the mixture in the conduit 25.

The other means for supplying mixture to the heater 28 comprises a pipe 52 which extends from the valve 50 into the mixing chamberll of the carburetor 10 immediately above and across the top of the mixing tube 13. This pipe 52 has a slot 53 in its underneath side, which slot is long and narrow as shown in Figures 1 and 4. Its length, however, is somewhat less than the interior diameter of the tube 13 so that it catches only that part of the mixture passing through the tube which is substantially in the middle part of the tube. That part ofthe mixture usually comprises smaller particles of liquid fuel than the mixture near the wall of the tube so that the pipe 52 receives a small quantity from the b est part, of themixture passing through said tube 13. This slot or inlet 53 also accomplishes a further breaking up of the mixture as it enters the pipe 52.

When the valve 50 is turned to connect the pipe 52 with the pipe 51, the mixture drawn from the tube 1 3 passes through the pipe 5.2 and the pipe 51 to the inlet 31 of the heater device 28 where it is fired by the igniter 36 as hereinabove described.

' In Figure 3 an auxiliary carburetor of the 1 compensating type is illustrated. This carburetor is also formed as a part of the float chamber 16 and has a well 54 which communicates through a restricted port 55 with the interior of a fuel tube'56, which tube extends downwardly from a plug 57 and bottoms on a plug 5 8. The tube 56 is also arranged in achamber 59 having a port 60 connecting itwith the air space in the upper part of the oatchamber 16, and the tube 56 `is also formed with a series of ports 61 near its lower end. At its upper end the tube 5.6 has outlet ports 62 and there is an air port 63 surrounding the tube above the port 60. The outlet .64 of the carburetor communi- Cates with a pipe 65 which corresponds to the pipe 51 of the form shown in Figure 1 and of course leads to the intake 31 of the heater devicel 28. i

In operation, the carburetor shown in Figure 3 gives Va rich mixture for starting and a less rich mixture for running conditions. When suction is created in the pipe 65 gasoline and air are drawn from the chamber 59 receive'gasoline only through the restricted` port 55. Thereafter air is drawn int-o the tube 56 through port 60, chamber 59, and ports 61, which air mixes. with the gasoline .entering the bottom of the tube at the port 55. This forms an emulsion of gasoline and air which is further dilutedv by air which openings.

reaches the outlet 64 through the port 63. A vent 66 in the cover of the iioat chamber 16 supplies air to that chamber.

Other forms of devices than that shown may be made without departing from the. lspirit or scope of the invention.

Having lthus described my invention, what I claim and desire tosecure by Letters Patent is:

1. In a hydrocarbon motor, the combination with a motor intake pipe having an opening therein, of'a combustion heater-secured to said pipe and having an opening registering with the opening in said pipe, and a corrugated plate forming a Wall separating the combustion chamber from the interior of the intake pipe.

2. In a hydrocarbon motor, the combination with a motor intake pipe. having an opening therein, of a combustion heater secured to said pipe and having an opening registering with the opening in said pipe, and a corrugated f plate arranged in said 3. In a hydrocarbon motor, the combination with a motor intake pipe, of a combustion heater mounted thereon, and a corrugated plate connected' between the intake pipe and the combustion heater. p

4. In a hydrocarbon motor, the combination with a motor intake pipe having a top opening, a combustion heater device mounted on said pipe over said opening and a plate set between-said pipe and device and form- -ing `a. wall therebetween.

iis

5. In a carburetor for hydrocarbon motors, the combination with the mixing chamber, a mixing tube, and a fuel nozzle in said tube, of acombustion heater device arranged adjacent said mixing chamber, and means connected to said carburetor immediately above said tube for withdrawing mixture from said tube and carrying it into said device.

6. In a hydrocarbon motor, the combination with a carburetor and. intake conduit,

of a combustion heater device mounted in heating relation to said conduit, a conduit connected to said carburetor to withdraw 4mixture therefrom and supply it to said 7. In a hydrocarbon motor, the combination with a combustion heater device, of a carburetor for supplying mixtureto said devicefand a check'valve between said car-.`

buretor and said device to prevent backfire- .Y

8. In a hydrocarbon motor, the combination with a combustion heater device, of two independently operating means for supplying mixture to said device, and means for connectingl either one or the lother of said mixture supplying means to said device. 9. In a carburetor for hydrocarbon motors, the combination with the mixing chamber thereof, a mixing tube, and a fuel nozzle in said tube, of a device for with-l drawing a portion of the mixture from said carburetor comprising a pipe extending across said mixing chamber above said mixing tube and having an opening to receive the mixture.

10. In a carburetor. for hydrocarbon motors, the combination with lthe mixing chamber thereof, a mixing tube, and a fuel nozzle in said tube, of a device for withdrawing ya portion of the mixture from said carburetor comprising a pipe extending across said mixing chamber above said mixing tube and having an opening to receive the mixture,said opening being in the form of a slot of narrow cross Section.

11. In a carburetor for hydrocarbon motors, the combination with the mixing chamber thereof, a mixing tube, and a fuel nozzle in said tube, of a device for withdrawing a portionof the mixture from said carburetor comprising a pipe extending across said mixing chamber above said mixing tube and having an opening to receive the mixture,.said opening being in the form of a slot extending along part only of the diameter of the interior of Said mixing tube. 4

12. In a carburetor, the combination with the mixture passage therein and the fuel inlet into the mixture passage, of a device for withdrawing a portion of the mixture from said carburetor comprising a plpe ,extending across the mixture passage and having an opening towards the fuel inlet.

13. In. a carburetor, the combination with the mixture passage therein and the fuel inlet into the mixture passage, of a device for withdrawing a portion of the mixture from said carburetor comprising a pipe extending across the mixture passage and having an opening towards and adjacent the fuel inlet.

14. In a carburetor, the combination with the mixture passage therein and the fuel inlet into the mixture passage, of a device for withdrawing a portion of the mixture from said carburetor, said device extending aCrOSS the mixture passagey and having its buretor and carrying it into saidl device,

said means having its inlet opening substantially vertically above said fuel inlet.

16. In a carburetor and motor intake conduit, the combination with the mixture passagein the carburetor and lthe fuel and air inlets inthe lower part of said passage, of a combustion heater device, and means for withdrawing mixture from said carl buretor and carrying it into said device, said ,supplying mixture to said device,

means having its inlet opening arranged substantiallyvvertically above said fuel and air inlets.

17 In a carburetor, the combination with the mixing chamber thereof and the fuel and air inlets at'the lower part of'said chamber, of a combustion heater adapted to draw its mixture from the carburetor and having its inlet opening therefor substantially vertically above the carburetor fuel inlet.

18. In a hydrocarbon motor, the .combination with the intake conduit and the carburetor foi` supplying mixture thereto, of a combustion heater device `for said intake conduit, a pipe connected to said carburetor to withdraw mixture therefrom to supply said device, an auxiliary carburetor for and means for connecting one of said mixture supplying means tosaid device' and'disconnecting` the other, and vice versa.

19. lnga hydrocarbon motor, the combination with a carburetor and intake conduit, of a combustion heater. device, a conduit connected to said carburetor to withdraw mixture therefrom and supply it through an inlet to said device, outlet means from said device to the intake conduit, air admission means between said inlet and outlet, and an igniter `in the device between said inlet and said air admission means.

20. rl`he method of producing heated. fuel mixture for internal combustion engines which consists in causing the suction ofthe intake passage to produce a delivery thereto of liquid fuel and air, diverting a sub jstantially xed proportion of said liquid delivery, combustibly combining a flow of air withlsuch diverted fuel in proportions adapted to maintain a clean-burning mixture and admitting the combustion products to thekvengine intake.

21. Means for producing heated charge mixture for internal combustion engines, comprising an intake Hpassage, means for producing an upward ow of a mixture of liquid fuel and air therein, means for diverting a substantially constant fraction of the liquid from said upward flow and means for admitting a proportional amount of air to .said liquid adapted to produce steady burning of said fuel and means for delivering the products to said passage.

In testimony whereof I aix my signature..

LIONEL M wooLsoN.