Abstract: An arrangement for driving the oil and water pumps of an internal combustion engine in which the pumps are driven independently of the engine's speed. In one arrangement the oil pump is activated prior to starting the engine to provide adequate lubrication to the engine during the starting operation. The activation of the water pump may be controlled by the temperature of the engine such that it is not needlessly driven when the engine is cold.

Abstract: A centrifugal water cooling pump unit mounted to the front cover of an internal combustion engine and is connected directly to the camshaft. The pump unit includes a special intake chamber overlying an impeller having straight radial blades with inner ends spaced from the axis of rotation. The intake chamber is formed with a spiral discharge passageway to direct the water spirally about the impeller axis of the impeller, with the water introduced into the impeller adjacent the radially inner ends of the radial blades. A pair of shaft seals are provided in the front cover with a telltale opening therebetween to indicate leakage from the water pump. The impeller is formed of plastic to the end of the pump shaft by a clamping nut. A bell-shaped washer is interposed between the impeller and nut to limit the pressure made on the plastic impeller.

Abstract: The present invention relates to a suspension device for a rotating machine lacking balance, comprising at least one elastic support defining a first chamber filled with liquid, wherein said first chamber is connected to a second chamber, likewise filled with liquid, closed by a flexible wall subjected to alternate displacements of frequency and phase equal to the frequency of the lack of balance to be compensated.

Abstract: A variable control mechanism for regulating the opening of an engine valve during each cycle of operation is disclosed. The control mechanism essentially includes hydraulic restraint means which control the relationship between camshaft movement and valve opening in an operating train wherein rotary motion of the camshaft is translated into linear movement of the valve. One form of the invention includes a pivotable rocker arm, one end of which is operatively connected to the camshaft by a cam follower and push rod and the other end of which is operatively connected to the valve. Effective movement of the rocker arm to actuate the valve is controlled by a hydraulic system, including a movable sleeve the operation of which is controlled by varying hydraulic pressures so that by increasing or decreasing the hydraulic pressure the opening of the cylinder valve can be controlled.

Abstract: A vehicle engine component has a specific compositon of alloyed chilled iron in which molybdenum is the major alloying element, thus producing a chilled iron with a more thermally stable carbide combined with a matrix which is stronger and more fatigue-resistant.

Abstract: A roller type cam follower carries a floating guide plate having an end thereof extending below the roller to be slidably received in a slotted groove provided in the cam on which the roller rides whereby to prevent rotation of the cam follower.

Abstract: A compression braking system for an internal combustion engine having at least one working piston including a master piston operated by a fuel injector actuating mechanism and a slave piston fluidically connected with the master piston to open an engine exhaust valve wherein a fluid pressure control valve is provided to operate an exhaust valve opening delay means for delaying the opening of the exhaust valve to prevent the build up of excessive pressure in the fluid circuit between the master and slave pistons. The pressure relief valve is spring biased to sense fluid pressure above a predetermined level within the fluid circuit and to respond by venting fluid from the circuit to prevent thereby the exhaust valve from being opened against a variable closing bias exceeding a predetermined limit. The pressure relief valve has, in one embodiment, adjacent inlet and outlet ports while in a second embodiment the inlet and outlet ports are separated.

Abstract: A structural unit for an internal combustion engine, including an engine region (for instance, a part of a cylinder head directly exposed to the cylinder firing zone) that requires direct cooling in use. Instead of applying the cooling to the region itself, it is applied to a separate structure with a connection to the region, the section of the connection corresponding in shape with that of the region itself. Both gaseous and liquid cooling of the structure are described.

Abstract: A liquid-cooled internal combustion engine with a control of the cooling medium temperature of its cooling medium circulation by a thermostatically operating mixing valve which includes a mixing chamber in open communication with the suction connection of a circulating pump interconnected in the cooling medium circulation, a return chamber connected by way of a radiator return line with the cooling medium outlet of a radiator and adapted to be closed off with respect to the mixing chamber by way of a return control valve, and a by-pass channel connected with the cooling medium outlet of the internal combustion engine and adapted to be closed off with respect to the mixing chamber by a by-pass control valve; the cooling medium outlet of the mixing valve is connected by way of a radiator inlet line with the cooling medium inlet of the radiator while the return chamber is connected by way of a vent connection with an auxiliary chamber fed with cooling medium by the circulating pump for the formation of a liquid

Abstract: An auxiliary intake passage system for internal combustion engines having a main carburetor delivering a lean mixture to main combustion chambers through a main intake passage, and an auxiliary carburetor delivering a rich mixture to auxiliary combustion chamber through an auxiliary intake passage. The auxiliary intake passage system is comprised of an induction passage leading from the auxiliary carburetor to an auxiliary intake distribution chamber. A plurality of branch passages extend laterally from said auxiliary intake distribution chamber and lead to the auxiliary combustion chambers. The induction passage comprises a first portion of substantially uniform cross-sectional area connected to a second portion which is tapered and so formed that the internal wall of the tapered section is outside the axial projection of the internal wall of the first portion, thus minimizing resistance to fluid flow and improving fuel distribution and homogenation to each combustion chamber.

Abstract: A liquid-cooled internal combustion engine with a control of the cooling medium temperature of its cooling medium circulation by a thermostatically operating mixing valve which includes a mixing chamber in open communication with the suction connection of a circulating pump interconnected into the cooling medium circulation, a return chamber adapted to be closed off with respect to the mixing chamber by a return control valve and connected with the cooling medium outlet of a radiator by way of a radiator return line, and a by-pass channel connected with the cooling medium outlet of the internal combustion engine and adapted to be closed off with respect to the mixing chamber by a by-pass control valve; the cooling medium outlet line of the mixing valve is connected by way of a radiator inlet line with the radiator inlet of the radiator while the return chamber is connected by way of a vent connection with an auxiliary chamber fed with cooling medium by the circulating pump by way of the radiator inlet line fo

Abstract: An internal combustion engine including at least one cylinder defining a combustion chamber, a piston reciprocal within the cylinder, at least one port in the combustion chamber, a valve within the port and movable between positions opening and closing the port, a camshaft, a valve train operated by the camshaft for moving the valve between the positions, the valve train including a hydraulic valve lifter, an oil supply line for providing oil to the hydraulic valve lifter and a device for at least partially interrupting the supply of oil to the hydraulic valve lifter for predetermined operational conditions of the engine to thereby intentionally induce valve lash into the system at the predetermined operational conditions.

Abstract: Disclosed herein is a pressure valve for use in any one of several cooling systems for different internal combustion engines also disclosed herein. The pressure valve is connected in series with a source of coolant and an engine coolant jacket for affording coolant flow from the source through the coolant jacket when the pressure in the coolant is above a first value and for affording continued coolant flow through the coolant jacket until the pressure in the coolant falls below a second value lower than the first value. The pressure valve comprises wall means defining a chamber having an inlet and an outlet including a valve seat, together with a valve member having a first surface movable relative to a closed position wherein the first surface sealingly engages the valve seat, which valve member also has a second surface facing away from the first surface.

Abstract: The present invention relates to fuel vaporizing devices for vaporizing fuel prior to entering an internal combustion engine such that the vaporized fuel gives rise to an improved and more efficient combustion process within the engine, increasing gas mileage as well as providing for a more complete and efficient combustion process. More particularly, the fuel vaporizing device of the present invention includes a normally closed fuel vaporizing chamber adapted to receive fuel therein and wherein the chamber is heated so as to vaporize the fuel therein and to increase the pressure within the fuel vaporizing chamber. Also provided is a control valve forming a part of said fuel vaporizing device with the control valve being communicatively connected to said normally closed fuel vaporizing chamber and responsive to said pressure therein such that the valve opens once a certain or predetermined pressure level is present within said fuel vaporizing chamber.

Abstract: A dashpot for impeding rapid closing of a throttle valve of a carburetor, especially for an automotive engine has an air passage that opens to the atmosphere, venting a dashpot chamber whose capacity increases when the dashpot operates. A delay device is provided in the air passage, and comprises an orifice and a nonreturn valve arranged in parallel, and in series therewith, a control valve that closes the air passage when an intake manifold vacuum exceeds a set value. The dashpot serves as a throttle positioner in the high engine rotation area, and as a regular dashpot in the low engine rotation area.

Abstract: A device for rotating a reciprocating valve executing alternating opening and closing strokes has an overrunning clutch coupled to the valve stem; a control lever; a first articulation connecting the control lever to the overrunning clutch; and a second articulation supporting the control lever at a distance from the overrunning clutch. The control lever is arranged to impart to the overrunning clutch a torque derived from the reciprocating motion of the valve. The overrunning clutch transmits the torque to the stem for effecting rotation thereof about the stem axis solely during the closing strokes. The second articulation is situated at a predetermined fixed location selected such that a line connecting the articulations defines a first angle with the valve stem axis at the end of each closing stroke and a second angle at the end of each opening stroke. The first angle is acute and the second angle is at the most 90.degree. and is greater than the first angle.

Abstract: A variable control mechanism for regulating the opening of an engine valve during each cycle of operation is disclosed. The control mechanism essentially includes hydraulic restraint means which control the relationship between camshaft movement and valve opening in an operating train wherein rotary motion of the camshaft is translated into linear movement of the valve. One form of the invention includes a pivotable rocker arm, one end of which is operatively connected to the cam shaft by a cam follower and push rod and the other end of which is operatively connected to the valve. Effective movement of the rocker arm to actuate the valve is controlled by a hydraulic system, including a movable sleeve the operation of which is controlled by varying hydraulic pressures so that by increasing or decreasing the hydraulic pressure the opening of the cylinder valve can be controlled.

Abstract: A V-shaped, air-cooled engine is provided with a cover on the front thereof, which houses a cooling fan connected to the engine's crankshaft. The interior of the cover is fitted with dividers to separate the air flow and direct it to the opposite sides of the engine, and to form a compartment for housing components of a non-contact ignition system. The non-contact ignition system is operated by the cooling fan, and is cooled by the flow of air through the cover. Components of the ignition system are permanently connected to each other, without the usual separable connectors.

Abstract: A rocker arm and a method of making the same are provided. In one form, the rocker arm is of the wrap-around type in which a metal sheet is appropriately symmetrically shaped and is then bent back on itself on the line of symmetry at which one end of the rocker arm body is formed. The two halves are then affixed together by projection welding or the like. The rocker arm has two diverging, downwardly-extending walls formed at the one end of the body with a separate socket member then resistance welded to the walls. The socket member has a central oil opening which supplies oil to a push rod from an oil passage in the rocker arm body. This passage, in turn, communicates with an oil supply passage in a shaft on which the rocker arm is rotatably supported through a hole in a bearing sleeve carried by the rocker arm body. A second, separate passage communicates with the other end of the rocker arm and with the oil supply passage in the shaft through a separate hole in the bearing sleeve.

Abstract: When a lower engine power output is required, one of the combustion chambers acts as a reformer operable to convert a mixture of an ordinary fuel and air into a reformed gas which is introduced into the other combustion chambers for the power generating combustion thereof. On the contrary, when a higher engine power output is required, all the combustion chambers are subjected to power generating combustion of a stoichiometric air-fuel mixture.