Abstract: A universal connector for interconnecting a linearly movable engine speed control mechanism to a linearly and arcuately movable carburetor throttle valve control lever, including an elongated plastic body having a bore at one end, the body receiving in the bore a pin type shaft that projects from the throttle valve lever, the body at the other end capturing the chain-like end of the speed control cable, the shaft having a rounded end with an annular groove just behind the end that cooperates with one leg of a hairpin like spring clip that locks or unlocks the plastic body from the shaft upon inward or outward movement/deflection of the leg, the body thus being able to swivel on the shaft without relative lateral movement to accurately translate a linear movement of the speed control cable to an arcuate and linear movement of the throttle control lever.

Abstract: An integral air cleaner-noise silencer assembly includes a filter element dividing the assembly into lower and upper parts, the upper part constituting a lid or cover for the filter and including a funnel-like clean air outlet containing a venturi with as small a throat as practical to provide a maximum restriction of noise with a minimum restriction to air flow, the air outlet and venturi being overlaid by a resonator chamber having an annular inlet surrounding and concentric with the venturi diffuser outlet for dampening the acoustical energy of engine sound waves, the venturi diffuser walls also reflecting the waves back toward the engine.

Abstract: A mixture-compressing spark-ignited four-stroke internal combustion engine having a combustion chamber bounded by the piston and the cylinder head, and inlet and exhaust valves, the valve openings of which are offset in plan view in the longitudinal direction of the engine with respect to a transverse plane of the cylinder and the valve stems of which form an acute angle when projected onto the transverse plane of the cylinder, and a squish area opposite a spark plug and parts of the inlet valve opening being masked and supplied with a mixture by a swirl inlet passage, the swirl inlet passage supplying a mixture to the inlet valve opening tangentially, a spark plug being disposed close to the center of the cylinder on the side facing the inlet valve opening, a squish area being provided opposite the spark plug amounting to between 5% and 15% of the cylinder cross-sectional area, and the inlet valve opening being masked on its flow downstream area toward the outer periphery of the cylinder by a downward projec

Abstract: The invention provides an engine cooling system for a water cooled engine in a motor vehicle, comprising a radiator 18 totally enclosed within ducting such that air flowing through the radiator does not otherwise pass through the engine compartment. The radiator 18 is arranged within a branched ducting with two outlet openings, one branch being fan 20 assisted and the other opening into a region 28 of low pressure at the front underside of the vehicle. An undershield 22 serves to enclose the engine and separate air flow paths are formed for cooling the oil sump, the top of the engine and the exhaust manifold.

Abstract: The invention relates to a drive mechanism for connecting an input shaft to an output shaft and superimposing on the output shaft a variable oscillatory motion determined by the position of a reaction member. The drive mechanism comprises an input disc fast in rotation with the input shaft, and defining a slideway transverse to the axis of the input shaft. A sliding member is made to slide along the slideway by a block journalled within a pivotable yoke, the block being itself slidable in a second slideway defined by the sliding member. A crank pin fixed to the output shaft is connected slidably to the sliding member such that as the sliding member slides along the slideway, the phase of the output shaft is varied with respect of the phase of the input shaft. A second similar mechanism drives a weight with opposite phase in order to cancel out the reaction torque on the input shaft.

Abstract: A self contained EGR system consists of a spacer insertable between the intake manifold and the cylinder head of an automotive type engine, the spacer including air/gas flow passages each aligned with an intake manifold runner and a cylinder head intake port, and a corresponding number of EGR gas distribution passages at least partially surrounding each air/gas flow passage with controlled size inlet ports between the two passages for passage of EGR gases into the intake ports, and an EGR valve to control the flow of EGR gases, the valve being mounted on the spaces.

Abstract: An automotive type internal combustion engine has an oil pan that is easily attached and disassembled from the skirt of the engine block by means of a snap-on type connector that includes a springable-like retaining plate removably attached to the upper edge of the oil pan and having right angled end portions springably engaged through slots in the oil pan wall for projection to a location above the ledge of the engine block skirt for supporting the oil pan upon the ledge and securing it to the block, the end portions of the retaining plate being cammed outwardly upon upward assembly of the oil pan to the block ledge and springably returned into a locking position with respect to the ledge after the ledge has cleared the hook-like ends; disassembly being accomplished by forceably moving the springlike ends outwardly until the block ledge is cleared for vertical removal of the oil pan from the ledge.

Abstract: A rocker arm construction suitable for high-speed operation with low-friction consisting of a one-piece essentially U-shaped rocker arm having a bottom portion continuous in material from end to end with an upraised cylindrical surface portion constituting a fulcrum engaged with a stationary lash adjuster mounted in a housing secured to the rocker arm cover, the housing also including a rib portion straddling a roller cam follower rotatably mounted on one end of the rocker arm, the rib portion having a recess, the surface of which defines an epicyclic curve generated by a point on the roller cam follower as it rolls about a cam lobe on the chamshaft, the latter curve providing a pure rolling motion of the cam follower on the cam lobe and assuring a pure rolling motion of the rocker arm on the fulcrum line contact with the lash adjuster, the opposite end of the rocker arm engaging the end of a valve stem for reciprocation thereof.

Abstract: A pressure operated valve is arranged so that it switches over rapidly between two opposite end positions. The valve has a pressure chamber closed by a diaphragm. Between the diaphragm and the valve member, there is a snap-action spring which continues to hold the valve member in one end position during a first phase of diaphragm movement, and at a preset point snaps over to a condition where it accelerates the valve member into its opposite end position, and holds it there. A biasing spring may oppose the force exerted on the diaphragm by pressure (normally vacuum) in the pressure chamber. The valve has use in EGR systems, as well as engine decelerating systems.

Abstract: An engine oil pan of the dry sump type is divided into inner and outer parts by a funnel-like baffle with a hole in the bottom, the hole being of a controlled vertical height, the outer part being an oil reservoir connected to the engine suction side of the engine positive crankcase ventilating (PCV) system, the inner part receiving the oil therein from the various engine parts and being connected to the fresh air inlet side of the PCV system, thereby, during normal engine operation, establishing a constant pressure differential across the baffle to force oil collected in the inner part through the hole into the outer part, the oil level in the inner part stabilizing at the level of the hole in the baffle, the oil in the outer part stabilizing at a level dependent upon the total quantity of oil in the system and the volume of the reservoir, thereby removing standing oil from the vicinity of the moving parts in the crankcase which reduces friction and aeration of the oil and yet provides an adequate supply of

Abstract: A engine intake system includes a deceleration valve (10) which is biased in one direction by idle vacuum and in the opposite direction by manifold vacuum. Idle vacuum is admitted to and stored in a pressure chamber (30) in the valve each time the engine idles. When the engine is not idling, manifold vacuum is admitted to another pressure chamber (28) in the valve. A diaphragm (24) separates the two chambers and is connected to a valve member (18) which opens and closes the deceleration passage (12).

Abstract: A heated fuel injection system includes a fuel injector assembly that receives the output of a diesel type fuel pump against a piston that normally biases an injector valve closed; the pump also supplying a fuel reservoir with high pressure fuel, the output of the reservoir being heated and fed to the injector valve to act upon it to move it open when the force of the piston acting against it is relieved by the pump output pressure as it increases to a predetermined level during the charging stroke; the fuel heat being derived from the engine exhaust gases during normal running operation, and by an electrical starter, during engine startup.

Abstract: A vacuum limiting arrangement uses a three-port, two-position valve in conjunction with a vacuum sustaining valve to limit the vacuum applied to a vacuum driven device. A source of vacuum, such as engine intake manifold vacuum, is connected to one of two end ports. The device is connected to a central port, and the other end port is vented. The device can thus be connected either to the vacuum source in one position of the control valve or to vent. A control port that is effective to switch the control valve is connected into a vacuum line between the control valve and the device. The sustaining valve allows free flow of air from the device to the control valve, but only a restricted flow in the opposite direction to provide a hysterises to the system for controlling the shifting of the control valve, which is accomplished automatically as a function of the vacuum level at the device and in the control port.

Abstract: An engine coolant system contains a thermostat in a horizontally disposed line from the engine and a horizontally disposed air vent or bypass passage located above the thermostat to bleed air from the system. The bypass system contains a buoyant valve having a duckbill-like shape that pivots to one position by buoyancy in response to coolant flow to seal an air vent opening to the radiator, or to a return non-buoyant position permitting the bleed of air; one embodiment providing a valve with a buoyant insert as well as a weight insert; a second embodiment consisting entirely of a material buoyant in the conventional engine coolant.

Abstract: An automotive type diesel engine provided with a conventional fuel filter water separator has a solenoid operated drain or dump valve for removing liquid contaminant/water automatically when the contaminant or water reaches a predetermined level actuating a sensor. The removed contaminant or water is then inducted into the engine by means of a venturi/aspirator which in one embodiment has an outlet connected directly to the engine intake manifold to provide the necessary pressure drop or, in another turbocharged diesel engine embodiment, the boost pressure is connected to the inlet of the venturi/aspirator to again induct the liquid contaminant/water into and through the aspirator to be disposed of in the exhaust system of the engine, both embodiments thereby automatically providing for a complete disposal of liquid contaminant/water within the engine and thereby eliminating the need of a periodic draining of the same from the fuel filter by the vehicle operator, for example.

Abstract: An inlet manifold which has long inlet tracts 12 has valves 26,28 at the downstream ends of the tracts to control the air flow close to the cylinder head 24. Sufficient air for engine idle enters the cylinder head through a bypass passage 42. The valves, which are all linked together, are provided by a rotary spool inside a cylindrical bore which is integrally cast with the manifold. A valving portion 30 is associated with each tract.

Abstract: A fuel feed system for an automotive type internal combustion engine has a fuel reservoir from which fuel normally is supplied at a constant volume to the inlet side of a high pressure pump from a low pressure supply pump located in a fuel tank; the reservoir contains valving that automatically redirects fuel, which normally is returned from the high pressure pump directly to the fuel tank, back into the reservoir to maintain the constant supply of fuel to the inlet side of the high pressure pump even though the normal supply line is exposed to air and therefore not supplying fuel to the reservoir, thus preventing fuel starvation of the high pressure pump during the momentary exposure of its fuel supply line to air.

Abstract: An internal combustion engine has n member of cylinders, a piston in each cylinder connected to a crankshaft (2), each piston being in phase or out of phase with the others by A.degree. or a multiple thereof (A=720/n), cams for actuating inlet and exhaust valves to each cylinder, and a cam drive mechanism (5) which rotates the cams in phased relationship with the crankshaft (2) to open the valves in sequence for a desired angle of rotation of the crankshaft. The cam drive mechanism also includes means for combining the rotational movement of the cams with a phased oscillatory movement of the camshaft (3) and cams of variable amplitude about the axis of rotation at a frequency f times the crankshaft frequency so that over the period which the valves are opened and/or their timings variable, f has the following values:f=2n when the number of cylinders n=1;f=n or n/2 when n=2;and f=n/2 when n=3 or more. The selection of the frequency of the oscillations allows all the cams to be mounted on the same camshaft.

Abstract: The invention is concerned with a desmodromic valve operating mechanism, i.e. one in which the valve is mechanically closed instead of relying on the action of a spring. The valve operating mechanism comprises a cam 20 driven in synchronism with the engine crankshaft. A cam follower 18 is acted upon by an opening profile 22 of the cam 20 and serves to move the valve 10 in an opening direction. A movable closing member 26 has two profiles 24, 28. The first profile 24 interacts with the cam 20 and the second 28 with the cam follower 18. Closure of the valve is effected by the opening profile 22 of the cam 20 acting on the first cam profile 24 of the closing member 26 to move the closing member 26 in such a direction that the second cam profile 28 of the closing member 26 acts on the cam follower 18 to close the valve 10.

Abstract: A fuel atomizing throttle body is formed to receive a centrally located fuel injector near the inlet to the throttle body induction passage, the throttle body having an axially moveable throttling sleeve in the induction passage that cooperates with a fuel atomizer adjacent the injector for variably metering the primary flow of air into the engine while simultaneously increasing the velocity of the air to impact the metered fuel essentially at right angles to the fuel to atomize the same prior to entry of the mixture into the engine, the fuel atomizer having swirl passages further mixing the fuel with air upon discharge from the injector and providing a secondary minimum air flow volume to sustain engine operation during idle speed conditions when the primary path is closed.