US2466256A - Internal-combustion engine - Google Patents

Description

April ,1949. c. E. ME SSNER 2,466,256

INTERNAL-COMBUSTION ENGINE Filed June 28, 1945 (2977600 6. mess/7 Patented Apr. 5, 1949 Carlton E. Messner,

v Muskegon, Mich., assignor to Continental Motors Corporation, Mich., a corporation of Virginia Muskegon,

Application June 28, 1945, Serial No. 601,990

Claims.

This invention relates to internal combustion engines and more particularly to apparatus and a method of lubricating the same.

It is well known that fuel pumps and oil pumps are used in present day internal combustion engines. The present invention is directed to the problem of impelling such pumps. This problem has been accentuated of late by the need for more compact engine housings and the ever present urge for reduction in cost.

It is an object of the present invention to provide an extremely simple and effective pump combination which reduces wearing on parts and insures lubrication as long as fuel is being pumped.

It is a further object to provide a pumping combination for lubricating oil and engine fuel so related that there can be no oil pump failure Without an immediate response in fuel pressure. This eliminates the danger of engine destruction due to unnoticed lack of lubrication.

For a more detailed understanding of the invention, reference may be had to the accompanying drawings illustrating a preferred embodiment of the invention in which like parts throughout the several views are designated by like numerals, and in which:

Fig. 1 is sectional view of a portion of an engine housing showing the relationship of the parts of the pump driving mechanism.

Fig. 2 is an enlarged section of the oil pump taken on a plane transverse to that of Fig. 1 at line 2-2.

In the drawing, a crankcase of an internal combustion engine is shown at II] with the crankshaft shown in section at H. A camshaft l2, journaled in the engine mounting, is driven through a worm gear from the crankshaft. Valve stems l3 and M are shown in this instance as being respectively driven by cams |3a and Ma carried by the said camshaft I2.

On a wall l5 of the engine housing is mounted a standard fuel pump 6 with the operating lever ll projecting into the crankcase. A bracket 20 on wall l3 slidably supports an actuator or cam follower 2| which, at its upper end, rides against cam 22 on shaft 2. The lower end of the actuator 2| is received in a recess in the end wall of an oil pump piston 23 which reciprocates in cylinder 24 against the bias of a spring 25.

The intake 26 of pump 2-324 is controlled by a gravity check ball 21. The outlet (Fig. 2) is shown at 28 controlled by a spring pressed ball 29 leading to flow pipe 30.

The operating lever I! of fuel pump I6 is the two 2 yoked around actuator 2| so that it bears directly on the head of piston 23. Fuel pump I 6 is a spring biased pump but spring 25 is the stronger of the two.

In the operation, when the actuator 2| is moved downward by cam 22 as shown, spring 25 is compressed as pump 23-24 moves in its delivery stroke. Lever I1 is released downward and the fuel pump may move in its intake stroke. As cam 22 continues to rotate, spring 25 is released whereby its acts to move actuator 2| in a cam following motion and to shift lever ll of fuel pump IS in a delivery stroke. Meanwhile piston 23 is moving in its intake stroke. Fig. 2 illustrates the position of piston 23 at the end of its upward stroke.

It will thus be seen that the spring 25 provides the power stroke for the fuel pump and any failure of the oil pump will stop the fuel supply and prevent engine operation until repair is made. In addition a single moving part operates pumps which may thus be compactly located in the engine housing.

Although I have illustrated but one form of my invention and have described in detail but a single application thereof, it will be apparent to those skilled in the art to which my invention pertains, that various modifications and changes may be made therein without departing from the spirit of my invention or from the scope of the appended claims.

What I claim is:

1. In an internal combustion engine, a fuel pump mounted adjacent the crankcase of the engine, a lubricating pump located in the crankcase, a cam shaft driven by said engine, an actuator for said oil pump operably connected with said cam shaft to impart a reciprocating motion thereto against the bias of a spring, and an operating lever for said fuel pump positioned to be actuated by the return motion of said spring.

2. In an internal combustion engine, a fuel pump mounted adjacent the engine, a lubricating pump having a reciprocal moving part, means biasing said part in one direction, means operably connected to shift said part in a work stroke in response to movement of said engine, and means operably connecting said part and said fuel pump to cause actuation of said fuel pump only when said part is restored to position by said biasing means.

3. In an internal combustion engine, a fuel pump, an oil pump, means for driving one of said pumps from the crankshaft, and means operably connecting said pumps whereby the driven pump actuates the other pump only in its return stroke.

4. In an internal combustion engine, a fuel pump, an oil pump, means for imparting a driving stroke to one of said pumps from the crankshaft of the engine against a spring bias, and means operably connecting said pumps whereby the driven pump actuates the other pump in its return stroke only by reason of the return of the spring bias.

5. In an internal combustion engine, a lubrieating pump cylinder, a reciprocal piston in said pump cylinder, a spring biasing said piston out of said cylinder, a cam shaft driven from the crankshaft, a cam follower arranged to'i'mpart 15 1,391,392

5 to the spring bias return stroke of said piston.

CARLTON E. MESSNER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,408,179 DuPont Feb. 28, 1922 Nelson Dec. 20, 1932

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