US1803240A - Fuel-mixing apparatus - Google Patents

Description

April 28, 1931. w. F. FENZEL 1,803,240

FUEL MIXING APPARATUS Filed Dec. 1, 1927 Patented Apr. 28, 1931 STATES WILLIAM FENZEL, F CLEVELAND, OHIO FUEL-MIXING APPARATUS Application filed December 1, 1927. Serial No 237,057.

This invention relates to improvements in fuel treatment and supply apparatus for internal combustion engines, and has as its essential and primary object the increasing of the efiiciency of the motor.

A further object is the increasing of such efliciency with fuel of lower grade or inferior quality.

Vith these and other and more detailed objects in View, as will in part hereinafter become apparent and in parts be stated, the invention comprises certain novel constructions, combinations, and arrangements of parts as subsequently specified and claimed.

In the accompanying drawings- Figure 1 is a view in side elevation, somewhat diagrammatic, of an internal combustion motor equipped with an embodiment of the present invention.

Figure 2 is an enlarged, detail, sectional elevation of a structure embodying the features of the present invention.

Referring to the drawings by numerals, 1 indicates an internal Combustion motor of any well known or conventional type having the usual exhaust manifold 2 discharging into the exhaust pipe 3. The customary intake manifold 4 communicates with the source of fuel supply incorporating the features of the present invention. The details of connection between such fuel supply and the manifold 4 are susceptible of a wide range of variance, as will become obvious. One specific form of such connections is illustrated in the drawings and comprises the usual clamping flanges 5 fixed, respectively, to the intake manifold and the carburetor body or fuel supply. The carburetor flange in the structure illustrated in the drawings is formed integral with, or otherwise fixed to, the throat or discharge tube 6 of the mixing chamber 7. A throttle valve 8 is pivoted in the customary manner in the throat 6 and provided with a clamp 9 and other linkage, not illustrated, for the usual carburetor throttle control. The mixing chamber 7 is preferably globular, but may be otherwise shaped, and is provided in 1ts upper portion with a spider 10 carry ng a pendent guiding pin 11 on which is slidlngly mounted a mixing and control valve 12. An

appropriately tensioned spring 13 is coiled about the upper portion of the valve 12 so as to rest at its lower end against the valve and contact at its upper end against the spider 10, and thereby stress the valve 12 downward to its seat. The under face of the valve 12 is formed centrally into a pendent inverted cone 14 which flares upwardly and blends into the body of the valve 12 with an encircling depression 15 formed in the under face of the valve at the point of union of the cone 14. The lower portion of the housing 7 is open to form a downwardly opening passageway for accommodating the valve 12, and the housing 7 is provided with a flange 16 bolted or otherwise appropriately clamped to a flange 17 of the air intake chamber 18. The chamber 18 has a lateral port 19 provided with a control valve 20 similar in construction and arrangement to the throttle 8 and appropriately connected by linkage 21 for easy and ready manual or foot control of the operator. The air intake chamber 18 may be a casting, or may be otherwise constructed, and is provided with aipendent chamber 22 closed by a web 23 across its top and thus separated from the intake portion of the housing 18. A fuel supply tube 24 leads from within the chamber 22 to a point just beneath the valve 12. The lower terminus of the tube 24 is preferably ground to a valve seat 25 adapted to receive the needle valve 26 threaded through thebottom of the chamber 22. Needle valve 26 is provided with the usual or appropriate gland 27 and with an operating handle 28 accessible from the exterior for adjusting the valve 26 relative to its seat 25 for controlling the possible quantity of gas or otherfluid to be per mitted to pass up the tube 24. The upper terminus of the tube 24 is round to form a valve seat 29 located and formed to receive the cone 14 as a needle valve, whereby, when the parts are at rest, the tension of spring 13 will cause the valve 12 to remain seated on the seat 29 and shut off all supply of fuel.

A fuel delivery tube 30 leads laterally into the chamber 22, and is preferably formed into a coil 31 designed to extend the path of travel of the fuel in a relatively short compass of space for facilitating application of heat. A

ther means of insuring an ample discharge through the pipe 33, the intake end of pipe 33,

- that is the end communicating with the manifold 2, may be provided with an appropriate deflector plate or baflie, such as seen at 38,

to intercept the burnt products advancing along the manifold 2 and deflect them into the pipe 33. The bafiie 38 may be fixed to the end of the pipe 33 in any appropriate manner or, as illustrated, may beproduced by cutting away a portion of the pipe itself and leaving that portion best located for deflecting the gases into'the intake end of the pipe.

' the air intake chamber, a gaseous fuel cham- What is claiinedis 1 In fuel mixing apparatus wherein vaporized fuel and air are mixed, the combination of an air intake chamber, amixing chamber above and in direct co unication with the air intake chamber, a gaseous fuel chamber contacting with the air intake chamber and sealed from communication therewith, a discharge tube extending upwardly from the gaseous fuel chamber and opening toward the mixing chamber at the place of communication of the air intake chamber with the mixing chamber, the cross sectional area of the discharge tube being relatively small with respect to that of the gaseous fuel chamber, an imperforate valve extending across and substantially closing the communication between the air intake chamber. and mixing chamber and arranged above the discharge end of the gaseous fuel discharge tube and having a portion adapted to engage and close said discharge end, and means additional to said valve for varying the discharge through said tube.

2. In fuel mixing apparatus wherein vaporized fuel and air are mixed, the combinationof an air intake chamber, a mixing chamber above and in direct communication with ber contacting with the air intake chamber and sealed from communication therewith, a discharge tube extending upwardly from the gaseous fuel chamber and opening toward the mixing chamber at-the place of communication of the air intake chamber with the mixing chamber, the cross sectional area of the discharge tube being relatively small with respect to that of the gaseous fuel chamber, an imperforate valve extending across and substantially closing the communication between the air intake chamber and mixing chamberand arranged above the discharge end of the gaseous fuel discharge tube and having a portion adapted to engage and close said discharge end, and a valve at the lower end portion ofthe gaseous fuel discharge tube for varying the discharge through said tube. In testimony whereof I affix my signature.

' WILLIAM F. FENZEL.

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