US2390979A - Auxiliary fuel supply for internal combustion engines - Google Patents

Description

Dec. 11, 1945. c. YOUNG AUXILIARY FUEL SUPPLY FOR INTERNAL-COMBUSTION ENGINES Filed Nov. 17, 1944 Inventor CLINT Y'oUNG,

a Attorneys Patented Dec. 11, 1945 AUXI LIARY FUEL .SUPPLY FOR IN TERNAIl- COMBUSTION ENGINES Clint Young, East St. Louis, Ill.

Application November 17, 1944, Serial No. 563,862

3 Claims.

The present invention relates to improved Ways and means of satisfactorily utilizing gaseous vapors from a conventional gasoline storage tank, whereby to provide an added or auxiliary and highly combustible fuel supply for delivery to the intake manifold or carbureter, as the case may be.

My primary aim is to provide a simple pipe connection between the carbureter and the vapor trapping and accumulating chamber in the standard gasoline storage tank, the intermittent suction occurring in the carbureter serving to deliver such added and otherwise wasted fuel vapors and to thus provide a. booster for the carbureter.

Another phase of the invention has to do with the provision of a simple blower, driven from the engine shaft and connected with the gasoline tank 'by way of a pipe, said pipe having its discharge end located adjacent the bottom of the tank, whereby to introduce air, under pressure, into the gasoline and to employ the issuing air bubbles to slightly agitate the gasoline and permeate same, whereby to complement the auxiliary delivery pipe in promoting results more effective than would otherwise be had.

A further phase of the invention is in reference to the ways and means of slightly heating the gasoline in the storage tank, this by a heating coil, whereby to condition and increase the combustible properties and character of the trapped fuel-vapors.

Other features and advantages will become more readily apparent from the following description and the accompanying illustrative drawing.

In the drawing, wherein like numerals are employed to designate like parts throughout the plurality of views:

Figure 1 is a side elevational view, with parts shown in section, of a conventional internal combustion engine, showing the gasoline supply or storage tank and the various contrivances which contribute in producing the collective functions desired.

Figure 2 is a fragmentary vertical sectional view taken approximately on the plane of the line Z--2 of Figure 1, looking in the direction of the arrows.

Figures 3, 4, and are similar fragmentary sectional and elevational views taken on the line 3-3, 4-4, and 5-5, all appearing in the direction of the respective indicating arrows.

Referring now to the drawing, by distinguishing reference numerals, the internal combustion engine is denoted as a unit, by the numeral 6 this having associated therewith a carbureter 1, intake manifold 8, water circulating pump 9 and fuel supply orstorage tank I0.

As stated, the primary phase of the invention has to do with the pick-up and delivery of fuelvapors from the collecting chamber above the gasoline in the tank [0, This is accomplished by way of a suitable suction-controlled pipe ll connected as at l2 to the usual filler neck I3. At its opposite end it is connected as at M either to the intake manifold 8 or the carbureter l. The point of connection as regards these elements is optional, depending upon results desired.

The gasoline agitating and aerating feature has to do primarily with a simple blower system. The blower proper is indicated at l5 and is appropriately mounted and driven by gearing l-B from the engine shaft. The air is taken in at the hub of the blower housing as usual and then forced out of the periphery through a pipe I 1 which is appropriately arranged and has one end depending into the gasoline in the tank In said end terminating in a discharge funnel l8 located near the bottom of the tank. The air jets or bubbles issue from this funnel and pass upwardl through the gasoline picking up fuel and providing a more abundant supply in the trapping chamber, this trapped additional fuel then being sucked into the carbureter by way of the suction pipe or line I I,

The next and third phase has to do with increasing the temperature of the gasoline and this is done by a simple coil l9 of any appropriate construction. This coil is located and confined in the gasoline tank and is proportioned depending on the degree of heat desired. By preference the coil is connected at one end by a .branch pipe 20 to the fuel pump, the latter being connected to the water jacket by the usual pipe 2| and being driven by customar gearing 22. This pump is of the gear type as shown in Figure 5. The return or circulating line 23 is connected with the water space in the top of the motor or engine jacket and with the uppermost convolution of the coil [9. By circulating hot water through this coil the gasoline in the tank is heated and. rendered more efiectively usable particularly insofar as it pertains to heating the entrapped gas vapors in the top chamber of the tank Ill.

The individual phases described can be used conjointly or separately, each adding its proportionate share to the economy of operation of the motor. When all three are combined and propper gallon on an automobile, it is submitted, from 10 to 20 percent.

It is thought that persons skilled in the art to which the invention relates will be able to obtain a clear: understanding of the invention after considering the description in connection with the drawing. Therefore, a more lengthy description is regarded as unnecessary, 3

Minor changes in the shape, sizeand arrangement of details coming within the field of invention claimed may be resorted to in actual practice, if desired. 1

I claim:

1. In a structure of the class describedin combination, an internal combustion engine including a carbureter, an intake manifold, a gasoline storage tank, a suction pipe connection between the top of the gasoline tank and the intake manifold, a heating coil mounted in said tank to in crease the temperature of the gasoline, and means for supplying air under pressure into the gasoline, in the manner and for the purposes described.

2. In a structure of the class described, in combination, an internal combustion engine, a carbur'eter, a fuel tank, a suction pipe connection between the fuel tank and carbureter, a blower, an operating connection between the blower and engine, said blower being provided with a forcefeed air pipe and said air pipe extending into the gasoline tanktosupply air to a point within the vicinity of the bottom of the tank,

3. In a structure of the class described, in combination, an internal combustion engine, a carbureter,v a fuel tank, a suction pipe connection between the fuel tank and carbureter, a blower,

an operating connection between the blower and

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