US1507950A - Auxiliary fuel supplier - Google Patents

Description

Sept. 9, 1924. 1,501,950

S. E. BLIZZARD AUXILIARY FUEL SUPPLIER Filed March 20, 1923 Fl (3 I 33 IE 2 as 'a '5 E'EmIZZ/ARB,

Patented Sept. 9, 1924.

UNITED STATES- I 1,507,950 PATENT OFFICE.

SAMUEL EARL BLIZZABD, OF INDIANAPOLIS, INDIANA.

AUXILIARY FUEL SUPPLIER.

Application filed larch 20, 1923. Serial 170. 826,883

tion of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates generally to fuel supplying means for internal combustlonengines, and the invention aims to provide novel and improved means for supplying the crank casing vapors, steam or water vapor and heated air to the carbureter, in order to provide for economy in fuel consumption and to increase the efliciency of the engine.

Another object of the invention is the utilization of the crank casing vaporsas fuel for the engine, to reduce the proportlon of gasoline or primary fuel required, and means being provided for heating such vapor and for mixing heated air therewith to facilitate combustion.

A further object is the provision of novel means for mixing the vapors and air.

A still further object is the provision of such a device having provision for the mixture of steam or water vapor, such as supplied from the radiator or water cool ng stem, with the crank casing vapors, for i zi ie mixture of the crank casing and water vapprs with the air on their way to the englne. 4

With the foregoing and other objects in view, which will be apparent as the descri tion proceeds, the invention resides in t e construction and arrangement of parts, as hereinafter described and claimed, it being understoodthat changes can be made within the scope of what is claimed, without departing from the spirit of the invention.

The invention is illustrated in the accompanying drawing, wherein a Figure 1 is a side elevation of the device as applied to an automobile engine.

Flgs. 2, 3 and 4 are enlarged sections on the respective lines 2 -2, 3-3 and 4-4 of Fig. 1. I

In carrying out the invention, there is provided a tubular extension 7 for the 'breather pipe 8 of the crank casing 9 of the engine, the lower end of the extension '7 being adapted to slip telescopically into the breather pipe, and the breather pipe cap 10 being applied to the upper end of the extenslon 7. Oil can be poured down through the extension 7, when the cap 10 is removed therefrom, to pass on down throughthe extension 7 and pipe 8 into the crank casing. The extension 7 has an inclined branch 11 between its ends in which is fitted one end of. a flexible conduit 12 which has its other end connected. to the air and vapor mixer 13. Another'flexible conduit 14 has one end connected 'to the mixer 13, and is provided at its other end with a curved nozzle 15 which has the discharge end thereof inserted 1n. the air inlet port of the carbureter 16 from which the carbureted air flows through the intake manifold 17 to the combustion chambers of the engine. The vapors in the crank casing 9 can thus flow throu h the breather pipe 8, extension 7 and its ranch 11, conduit 12, mixer 13, and conduit 14 to the carbureter 16, whereby the vapors from the crank casing can be utilized as fuel. This is for the purpose of economizing in the consumption of gasoline or primary fuel, the proportion of which can be diminished, depending on the richness of the crank casing vapors. "The vapors in the crank casing result from several causes. Thus, a certain amount of gasoline or fuel escapes past the iston rings on the compression strokes o the pistons, depending in volume on the tightness of the piston rings, and the fuel which thus escapes from the combustion chambers into the crank casing is usually wasted. There is also an oil vapor produced by the heating of the lubricating oil in the crank case, due to the contact of the lubricating oil with the heated cylinders, pistons, and other parts. The oil va or together with the gaseous fuel which leaks from the combustion chambers into the crank casing constitute the socalled crank casing gases or vapors, which are utilized, by being drawn through the passage-way aifordedby the present device to pass with the air and gasoline or primary fuel to the combustionchambers.

The air and vapor mixer 13 includes a tubular body 18 receiving at its op osite ends the adjacent ends of the condults 12 and 14, and said body 18 and adjacent portions of the conduits are di osed adjacent to the exhaust manifold 19 0 one side thereof, whereby such parts are the eng ne, at

heated from the exhaust manifold to superheat the vapors flowing through the passageway. The body 18 is provided at that side which confronts the exhaust manifold with an air inlet opening or port 20, whereby air can pass from the atmosphere into the body 18, the air being heated in passing the exhaust manifold when entering the port or inlet 20.

The suction of air through the port 20 and body 18 into the conduit 14 is used for drawing the vapors through the conduit 12 to mix with the air. For this purpose a tapered aspiration nozzle 21 is provided in the body 18 with its larger end in communication and registration with the conduit 12 for the flow of the vapors from said conduit through the nozzle 21. The smaller end of the nozzle projects toward the conduit 14, with the nozzle extending longitudinally across 'the air inlet port or opening 20, whereby the air which enters the body 18 flows around and past the smaller discharge end of the nozzle 21 in the direction in which said nozzle projects, so that the air flowing past the discharge end of the nozzle will create a suction in the nozzle which will draw the vapors through the conduit 12. The vapors discharging from the nozzle 21 will mix with the heated air and the mixture flows through the conduit 14 to the carbureter 16.

A'shield 22 is secured to the top of the body 18 and extends over the exhaust manifold 19 to the cylinder head, and is provided at its ends, beyond the inlet port 20, with the downturned flanges 23, thereby compelling the air which flows through the port 20 to pass closely adjacent to the exhaust manifold so as to be heated in entering the body 18 of the mixer.

The mixer 13 is supported in any suitable manner. As shown, supporting bars 24 are secured at their upper ends to the body 18, and their lower ends are held by the clamps 25 which secure the manifolds 17 and 19 to the cylinder casting.

In order to supply steam or water vapor a tube 26 has one end extending into the branch 11 of the breather pipe extension 7, and its other end is connected by a T-coupling 27 with the lower end of the overflow pipe or tube 28 of the radiator 29 of the water cooling system. Thus, the steam and water vapor discharging through the tube 28 can be drawn through the tube 26 into the conduit 12 to mix with the crank casing vapors on their way to the mixer 13.

In operation, the air is drawn by suction through the carbureter 16 and intake manifold 17, as usual, and is compelled to flow by way of the mixer 13 and conduit 14, so that the air is preheated in passing into the conduit 14. The air suction will draw the vapors through the conduit 12 to mix with the air, and the crank casing and water vapors will mix in entering the conduit 12 and will also be heated in passing through the conduit 12 and nozzle 21, whereby the mixture of the crank casing and water vapors will then mix with the heated air, to supply a mixture of crank casing vapors, steam or water vapor and air to the carbureter 16. The gasoline or primary fuel is mixed with such mixture to enrichen same, but the proportion of gasoline or primary fuel required is reduced, because of the utilization of the crank casing vapors. The amount of reduction of the gasoline or primary fuelrequired will depend on the rickness of the crankcasing vapors, and the saving in primary fuel is highest with considerable leakage from the combustion chambers past the pistons, and with a lightlubricating oil that vaporizes easily. The air and vapors which are supplied to the carbureter are superheated before reaching the carbureter, thereby facilitating the vaporization of the gasoline or primary fuel and rendering the combustion more thorough. The presence of water vapor in the mixture has a beneficial effect in reducing the deposit of carbon in the combustion chambers.

Having thus described the invention, what is claimed as new is 1. In a device of the character described,

a conduit to communicate with an enginecrank casing to receive vapors therefrom, a second conduit to communicate with the intake of the engine, and a mixer between and connecting said conduits and havin an air inlet port and an aspirator nozz e communicating with the firstnamed conduit and extending across said port toward the second conduit.

2. A device of thecharacter described comprising a conduit to communicate with an engine crank casing to receive vapors therefrom, a second conduit to communicate with the carbureter of the engine for the flow of air by suction through said conduit, and a mixer including a tubular body disposed between and connecting said conduits and having an air inlet port at one side and an aspirator nozzle communicating with the firstnamed conduit and extending across said port toward the second conduit' 1 3. A device of the character described comprising a conduit to communicate with an engine crank casing to receive vapors therefrom, a second conduit to communicate with the carbureter of the engine for the flow of air by suction through said conduit, and a mixer including a tubular body disposed between and connecting said conduits and having an air inlet port at one side and a tapered aspirator nozzle having its larger end secured in said body in registration with the firstnamed conduit, said nozzle extendv to receive the breather pipe cap, sai

ing across said rt with smaller end projectin towar the second conduit.

4. A evice of the character described compr' a tubular extension to fit the breather plpe of an engine crank casin and extension having a branch-between its ends; a conduit connected to said branch, a second conduit to communicate with the carbureter of the engine for the flow of air by suction through said conduit, a mixer connecting said conduits having an air inlet ort and means for drawing va ors thro h Ehe firstnamed conduit to mix with the 5r, and a water vapor supplying tube having a 15 discharge end projectmg into said branch.

In testimony whereof I have signed my name to this s i'fication in the presence of two subscribing witnesses.

SAMUEL EARL BLIZ ZARD.

Witnesses:

' Wu. HAMILTON Mum,

Knm Bmron Himm'

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