US1255375A - Valve structure for internal-combustion motors. - Google Patents

Description

A. WINTON.

VALVE STRUCTURE FOR INTERNAL COMBUSTION MOTORS 7 APPLICATION FILED APR. 27. I914. LfifififiT/fi. Patented Feb 5,1918.

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' A. WENTON.

VALVE STRUCTURE FOR INTERNAL COMBUSTION MOTORS.

APPLICATION FILED APR. 27-1914. 1 ,%5 3?5v Patented; Feb 9w,

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ALEXANDER WINTON, OF LAKEWOOD, OHIO, ASSIGNOR TO THE WIN TON GAS ENGINE & MANUFACTURING COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

VALVE STRUCTURE FOR INTERNAL-COMBUSTION MOTORS.

To all whom it may concern:

Be it known that I, ALEXANDER VVINTON, a citizen of the United States, residing at Lakewood, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Valve Structures for Internal-Combustion Motors, of which the following is a specification.

This invention relates generally to internal combustion engines, and particularly to an air and fuel valve structure.

More specifically the invention relates to a valve structure for internal combustion motors comprising a tubular valve casing and awalve member, the former having diametrically disposed air and fuel inlet openings at one transverse point, and removed therefrom, and at the end, a discharge valve seat, and the latter having an upper guiding portion, a. reduced portionadjacent the air and fuel inlet openings, and a group of annular flanges arranged between the air and fuel inlet openings and the discharge valve seat, these flanges being of less diameter than the bore of the casing and gradually increasing in diameter from the air and fuel inlet to the discharge. The discharge end of the valve member is provided with a valve cooperating with the discharge valve seat and between. this valve and the last flange the valve member is provided with a nozzle portion gradually increasing from a relatively small diameter to a large diameter near the base of the discharge valve. The

valve mem er is guided by suitable longitudinally I isposed spaced ribs arranged within the group of flanges and engaging the inner wall of the valve casing.

Leakage about the valve member at the outer end is prevented by a stuifing box on a diaphragm structure.

The invention may be further briefly summarized as consisting in the construction and combination of parts hereinafter set forth in the following description, drawings and claims.

Referring to the drawings, Figure l is a view showing the general arrangement of an engine provided with a valve structure constructed according to my invention; Fig. 2 is an enlarged View showing the mechanism in section and the operating rocker arm; Fig. 3 is an enlarged detail sec-' tion of a portion of the valve casing and valve; Fig. l: is a section upon the line 4:4i

Specification of Letters Patent.

Patented Feb. 5, rare.

Application filed. April 27, 1914.. Serial No. 834,738.

of Fig. 2; and Fig. 5 is a view showing a modified form of the means for preventing leakage about the valve member at the upper end.

In carrying out the invention any preferred form and construction ofparts may be employed so long as they possess the necessary characteristics, but I have shown one arrangement which is effective in operation, and in such embodiment 1 represents a crank case of any preferred type supporting the cylinders 2 also of any preferred type. Each cylinder is provided with a suitable head 3 having therein'an exhaust chamber l provided with a valve seat 5 toward the cylinder, and an air inlet chamber 6 provided with a valve seat 7 toward the cylinder. These chambers communicate respectively with the exhaust and the air supply. The head 3 is still further provided with a guide 8 for an exhaust valve and stem 9, and a guide 10 for an air inlet valve and stem 11. These valves are normally held closed by suitable springs 12 and thrust collars 13 arranged upon the valve stem, this structure being of any preferred type and not forming any particular part of the invention. The head 3 is still further provided substantially in alinement with the axis of the cylinder with a mixing valve opening 14 enlarged at 15 to form a shoulder 16, this shoulder forming a support for the mixing valve structure held thereon in any preferred manner.

The mixing valve structure comprises a tubular casing 17 having a flange 18 at the upper end provided with a threaded fuel inlet opening 19-for a fuel inlet connection 20 receiving the fuel supply pipe 21 and diametrically opposed to this opening 19 is a threaded opening 22 for receiving an air inlet connection 23"connected to an air inlet supply 24 leading to a suitable supply for Jllltl 31 is adapted to be forced against this packing by a suitable nut 32. This nut is provided with a spring thrust flange 33 for receiving the thrust of the valve spring 34. Slidably mounted within the tubular casing 17 is the valve member comprising a stem portion 35 having an annular groove or recess 36 near the upper end for the reception of a split ring 37 tapered externally and fitting into a corresponding opening in the valve collar 38. This collar receives the thrust of the sprin 34 so that the normal tendency of the valve member is upward, as shown in the drawings. At the lower end of the valve member is ,a valve portion 39 inclined and adapted to cooperate .with the seat 28. At a point above and below the openings 25 and'27 the valve member is reduced as at 40 for permitting the passage of the fuel and air about the reduced portion and within the opening in the-tubular casing. Below this reduced portion 40 the valve member is provided with a plurality of annular flanges 41 forming annular pockets or grooves around the valve member, and these flanges increase gradually in diameter from the reduced portion 40 to a point near the valve 39, as shown in Fig. 3, and for a purpose which will be described. In order to guide the lower end of the valve member the flanges are interrupted by guiding means which in this instance is made in the form of longitudinally disposed ribs 42 extending for a short distance along the valve member and spaced around the same, and these longitudinal ribs are adapted to fit the inner wall of the tubular easing and serve to center and guide the valve 39. Near the valve 39 the valve member is provided with a spreading or dis tributing member indicated at 43 which gradually increases in diameter from a point near the last flange 41 to the base of the ta ered valve 39, thediameter at this.

point eing slightly less than the bore of the casing at the inner diameter of the valve seat 28, the object of this structure being brought out later.

The valve may be opened by any suitable mechanism, but a form is shown in the draw-,. .ings, and it comprises a suitable bracket 44 secured to the engine in any suitable manner,

and supporting a rocker arm 45 provided with a pin 46 threaded into the end of the arm and held in any adjusted position by means of a nut 47. The opposite end of the rocker arm is provided with a friction roller 48 adapted to engage a cam 49 carried by a cam member 50 mounted upon a rotating shaft 51 driven in any suitable manner, not shown, from the crank shaft.

In operation, assuming that fuel is supplied under pressure at, for example, twelve hundred pounds, through the opening 25 and air supplied through the opening 27 at substantially the same pressure, and that the valve is seated, the cam 49 rocks the arm 45 and causes the valve member to move downward with the result that fuel and air will be released between the nozzle portion 43 of the valve and the inner peripheral edge of the valve seat 28 and distributed in substantially a spray, in that the member 43 directs the mixed fuel and air out at this point, causing it to impinge against the bevel face of the valve 39 and to spread in the explosion chamber of the cylinder. As the air and fuel pass downward from their inlet about the flanges 41 the mixture is caused to eddy in the annular grooves and to be baffled and restricted through the variable clearance about the flanges, thereby becoming thoroughly mixed so that by the time the mixture reaches the point of discharge already referred to, a perfect mixture is brought about. Additional air is supplied through the valve 11 which is opened at the proper time by mechanism, not shown.

In the modification shown in Fig. 5, the upper end of the tubular casing is counterbored to form a chamber 52, and a nut 53 having an opening 54 of the same size is screwed down on the casing member and onto a steel diaphragm 55 which is secured between rings 56 and 57 on a reduced portion 58 of the valve member, the extreme upper end of the valve member being threaded to receive a nut 60 which holds the rings 56 and 57 tightly against the diaphragm. In this case, the increased area of the diaphragm over that of the valve member and valve 39 causes the valve normally to assume closed position and no spring and stufling box are needed.

Having described my invention, I claim 1. A valve structure for internal combustion motors, comprising a tubular casing member having air and fuel inlet openings and a discharge valve seat removed therefrom, a valve member mounted within said casing, one of said members being provided with a plurality of annular projections forming a plurality of annular mixing pockets, said projections being spaced from the other member and successively increasing in diameter from the inlet to form communication between the pockets decreasing gradually in area from the inlet end to the discharge end of said casing, and a valve actuated by the valze member and coiiperating with the valve sea 2.- In an internal combustion motor, a valve casing having air and fuel inlet ports and an outlet removed therefrom, a valve 1 member slidably mounted within said casing, a plurality of spaced flanges carried by ing in size from the air and fuel inlet to the imtlet, and a valve cooperatingwith said out- 3. In an internal combustion motor, a mixing valve structure comprising a tubular casing having a discharge valve seat and air and fuel inlet openings removed from said seat, a valve member slidably mounted in said casing, a plurality of annular flanges carried by said valve member between the air and fuel inlet and the discharge valve seat, said flanges forming annular mixing pockets and gradually increasing in diameter from the air and fuel inlet to the discharge valve seat to vary the clearance past them, and a valve cooperating with said valve seat.

l. In an internal combustion motor, a mixing valve structure comprising a tubular casing having a discharge valve seat and air and fuel inlet openings removed from said seat, a valve member slidably mounted in said tubular casing, a plurality of annular flanges carried by said valve member between the air and fuel inlet and the dis charge valve seat, said flanges forming annular mixing pockets and gradually increasing in diameter from the air and fuel inlet to the discharge valve seat to vary the clearance past them, a valve cooperating with said valve seat, and a nozzle portion gradually increasing in area from the last flange to the base of the valve for distributing the mixture ,in thecombustion chamber of the motor.

5. A valve structure for internal combust10n motors, comprising a tubular casing member having air and fuel inlet openings and a discharge valve seat removed.therefrom, a valve member mounted within said casing, one of said members being provided with a plurality of annular flanges out of contact with the other member and forming a plurality of annular mixin pockets, said group of flanges extending substantially from the air and fuel inlet to the discharge end of the casing and gradually varying in dimensions to gradually decrease the clearance past them from the inlet end to the discharge end of the casing, a dischargev valve carried by said valve member and cooperating with the discharge valve seat, and a distributing member carried by one of said members and extending from the last flange toward the valve seat and gradually varying in dimensions toward the dis charge'end of the casing to decrease the area between said members.

6. A valve structure for internal combustion motors, comprising a tubular casing member having air and fuel inlet openings and a discharge valve seat removed therefrom, a valve member mounted within said casing, one of said members being provided with a plurality of annular projections forming a plurality of mixing pockets, said flanges being less in diameter than the bore of the tubular casing, a discharge valve carried by said valve member, and a guide for said valve intermediate the ends of the group of annular projections and comprising a plurality of spaced longitudinally dlsposed ribs engaging the inner wall of the casing, the spaces between said ribs permitting the passage of air and fuel past the guide.

In testimony whereof I aflix my signature two witnesses. ALEXANDER WINTON. Witnesses E. B. CROFT, E. D. BISHOP.

in presence of

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