Abstract: An ICE with at least one intake port and intake valve has an air inlet passage that is split by a divider wall into primary and secondary runners, the primary being smaller than the secondary. The secondary contains a flow deactivation valve for shutting off or permitting flow to the inlet port opening. The divider wall extends to a point immediately adjacent the intake valve stem so as to positively divide the passage into the two independent runners. The centerline of the primary passage is oriented so as to produce the desired swirl rate to the air flow, other geometric considerations being defined to accurately control the swirl rate of flow and velocity to provide maximum efficiency of operation; one being that the primary passage cross-sectional area be 40%-50% of the total cross-sectional area of the port opening, another being that the volume between the closed deactivation valve and the intake valve being less than 15% of the cylinder displaced volume, and including other sized ratios.

Abstract: A fuel injection system includes an injector having a fuel and air/gas mixing chamber that includes a normally closed injector valve, the chamber being for premixing fuel and air, complete with controls to provide a time interval between introduction of the fuel into the air chamber and the introduction of compressed air/gas to cause the injection event by opening of the valve to permit evaporation of the fuel whereby a premixed rich air/fuel mixture charge is discharged into the engine combustion chamber.

Abstract: A rocker arm is constructed with a fulcrum having at least a partially cylindrical bearing surface and a central passage for receiving therein a pressurized supply or lubricant or oil, the passage being intersected by radial holes or passages connected to the periphery or outer bearing surface of the fulcrum to define a clearance space between the fulcrum and rocker arm surrounding it, for the introduction of a film of oil or lubricant during the non-loading cycle of operation of the cam, a squeeze film effect being provided during the loading operation of the cam by the oil or lubricant being evacuated through a lower or ambient pressure outlet, a thin film remaining to floatingly mount the rocker arm upon the fulcrum, this being accomplished by the introduction of the oil or lubricant under a pressure greater than the forces generated when the cam is in contact on the cam base circle.

Abstract: An internal combustion engine has intake and exhaust ducts, including an exhaust duct portion formed as an integral part of the engine along with the engine coolant jacket and passages, the exhaust duct portion being located in good thermal contact with the engine coolant flow passages, and flow diverting valves in the exhaust duct portion to direct exhaust gases to flow through the exhaust duct portion when the engine is cold in order to accelerate warm-up, the valves causing the duct to be bypassed under normal operating conditions.

Abstract: An automotive type internal combustion engine has an air throttle body for providing air to the engine for combination with fuel injected to define a fuel air charge; the air throttle body having primary and secondary air passages controlled by throttling valves, the primary passage being a drive-by-wire electrical system in which the throttle valve is moved electrically in response to movement of the vehicle accelerator pedal, the secondary passage being controlled by a throttle valve that has a direct mechanical connection to the vehicle accelerator pedal to be operative at wide open or near wide open throttle positions of the accelerator pedal to not only supply additional air for wide open throttle operation, but also to supply sufficient air to sustain engine operation in the event of inoperativeness of the electrical system or the actuator/motor affecting movement of the primary throttle valve.

Abstract: A compact combination engine air cleaner/noise deadener for installation in the engine compartment of a motor vehicle type engine includes a two piece plastic elongated housing that is compact and has an ambient air inlet at one end radially spaced from an air outlet to the engine located on the axis of the housing, the inlet containing a first noise attenuating venturi, the housing having an air filter at the other end connected to the venturi and discharging air into a second convergent-divergent flow control noise attenuating venturi with which is integrated a mass air flow sensor, the venturis being surrounded by a dead air space type resonating chamber that has an inlet concentric with the air outlet so that engine feedback noises and sound waves are trapped in the chamber and dissipated, and any sound waves passing serially into the venturis bounce off the walls of the venturi diffusers to also be dissipated, thus minimizing the transmission of engine feedback noises past the air cleaner.

Abstract: A vehicle accelerator pedal push-pull type cable is connected from the accelerator pedal lever to the carburetor throttle lever through a support bracket that includes a flexible soft pliable sleeve type connector with a dumbell-like shape that permits extreme bending of the cable and connector during servicing and other operations, one end of the connector being secured within the bracket, the other end extending cantilever-like from the bracket and formed to resist separation from a dust tube surrounding the cable.

Abstract: A plastic one-piece tubular clip has a base portion embedded in the bolt mounting hole of each of the holes of an engine oil pan gasket, and a tubular shaft portion that projects through the aligned holes of an oil pan rail and an oil pan reinforcing plate, and through which the oil pan mounting bolts are inserted, the tubular portion having internal ridges or teeth to grip the shank of the bolt with its head portion butting up against the bottom of the reinforcing plate to resiliently lock all the pieces together as a subassembly so that the oil pan can be easily assembled to the engine merely by raising the oil pan up against the crankcase with one hand and then pushing each one of the bolts up into their mounting holes and tightening the same with the other hand.

Abstract: The invention relates to a filler cap 10 for a fuel tank of a motor vehicle, the mouth of the filler spout 16 of which is arranged in a recess 18 in the vehicle body.The filler cap 10 comprises a body 12 to fit over the mouth of the filler spout 16, and a lock mechanism 16 rotatable relative to the body 12 for locking the filler cap body 10 to the spout 16. A cover plate 20 hinged on the body 12 is pivotable between a first position in which the cover plate 20 is flush with the vehicle body and covers the fuel spout recess 18, and a second position in which access may be gained to the lock mechanism 16.

Abstract: A combination air inlet - engine noise silencer consists of a shell-type housing of large volume having a small volume air inlet tube at one end and an outlet of restricted area at another portion at right angles to the inlet for direct passage into the engine induction system, the air inlet tube containing a conical-like insert coaxially mounted with its apex facing upstream to provide a base portion at right angles to the axis of the inlet tube whereby engine acoustical waves passing from the engine towards the inlet are reflected against the base portion of the cone back into the expansion chamber to be dissipated and broken-up thereby reducing the engine noise, the cone concurrently increasing the velocity of the air flow into the engine proper to increase operating efficiency.

Abstract: An automotive engine crankshaft has a vibration balancing mass suspended from a main bearing cap on rods or bolts for an oscillatory radial movement in response to reciprocation of the mass by contoured cam wheels on the cheeks of the crankshaft, the cam wheels engaging rollers or cam follower wheels on a shaft freely rotatable in the balancing mass, the mass being restricted to a translational movement in a radial direction only, the mounting of the mass including a pivot/bushing that restricts the movement to the one translational direction only while at the same time permitting a slight rotational or pivotal movement of the mass about three axes to correct for any slight misalignment of the axis of the mass with respect to the axis of the crankshaft.

Abstract: A cam and cam follower mechanism for connecting a vehicle accelerator pedal to the throttle body throttle valve for varying rates of movement of the throttle valve, including a washer-like cam operatively connected to the vehicle accelerator pedal and having an internal cam surface adopted to be engaged by a number of pins fixed to a throttle lever at different radial distances from the lever and throttle valve pivot, the pins each constituting fulcrums about which the throttle lever and throttle valve are forced to pivot one at a time as the accelerator pedal is moved angularly between closed and open throttle valve positions, the pins shifting as fulcrums upon continued movement of the accelerator pedal to provide initially a slow rate of opening of the throttle valve in response to a large angular movement of the accelerator pedal followed by a faster rate of movement of the throttle valve more nearly in proportion to the angular movement of the accelerator pedal.

Abstract: An essentially unitary all plastic intake manifold has two essentially L-shaped sections facing one another to form a U-shaped assembly, the upper section including an air throttle body integral with an air plenum in turn integral with a plurality of laterally spaced tuned manifold runners, the lower section having an equal number of laterally spaced manifold runners connected to engine cylinder head intake ports, and a fuel system formed integral with the lower runners and including a fuel pressure regulator and fuel supply and return lines serially connecting fuel injector receiving cups providing a bottom feed of fuel to the injectors and a constant purge of fuel from the cups, for efficient engine operation.

Abstract: A fuel rail is defined by a spacer member sandwiched between a throttle body and an engine intake manifold, the spacer member having air channels connecting the throttle body air induction passages to the manifold inlet bores, the spacer member also having at least one longitudinal bore constituting a fuel passage, and fuel injector receiving cups communicating with the fuel passages.

Abstract: A roller type tappet body has a tappet, a lock pin type guide member, and axial guide grooves which cooperate with one another to secure the body against rotation, an axial guide groove in the cylindrical tappet bore that guides the tappet body into the cylinder block or head being formed from the remaining part of a small longitudinally extending bore that is initially bored and subsequently opened by the boring of the larger cylindrical tappet bore to form a semicircular cross-section, the guide member being secured to the tappet body and formed with a round or partly round cross-section from a cover plate for a portion of the tappet assembly.

Abstract: The invention relates to a desmodromic system in which a valve stem is arranged to be acted upon directly, or by way of rockers, by an opening cam and a closing cam rotatable together at constant or varying angular velocity in synchronism with the rotation of the engine crankshaft, and in which a compliance device is incorporated in the transmission train from the cams to the valve stem, the compliance device comprising two cup-shaped members nested together with a limited relative movement between and resiliently urged away from one another, the compliance device operating to provide zero clearance when the valve is open and maximum clearance when closed to accommodate valve recession and thermal expansion.

Abstract: A bifilar type pendulum automotive engine vibrational damper has at least one pendulum with an inner curved cam follower surface that is alternately engaged and disengaged from a pin type cam fixed on the pendulum carrier during low engine crankshaft operating speeds, such as during engine start up or shut-down, to force the pendulum to follow a path close to the path defined by the swinging arcuate movement of the pendulum during operation at normal engine crankshaft operating speeds, a minimal radial clearance being provided between the pendulum's curved surface and pin during the normal crankshaft operating speeds to reduce the impact of metal to metal contact between the pendulum and rollers or pendulum and carrier and resultant noise when the pendulum alternately falls inwardly against the carrier in response to gravity and then is forced outwardly due to centrifugal force.

Abstract: A connector for attaching a Bowden-wire cable assembly to a vehicle accelerator pedal mounting lever has a closed end needle-like or teardrop shaped nose portion closely hugging the cable assembly with only minimal clearance between to allow movement of the cable relative to the assembly, the outer periphery gradually increasing in radius to slowly blend to the diameter of a circumferential groove in the body portion having wall portions of a radial extent greater than the aperture in the lever within which it is to be inserted for snugly retaining the connector to the pedal mounting lever, and including a number of axially extending slots permitting collaspe of the grooved portion toward the center to permit insertion through the aperture and released to their free state to snugly straddle the wall of the lever defining the aperture receiving the connector, the needle-nose shaped end providing a self-centering action to the connector regardless of the misalignment of the axis of the cable assembly with respe

Abstract: An engine driven camshaft cam is driven in a manner to superimpose a variable oscillation on the cam as it is rotatably driven in order to vary the period during which an associated valve is opened, the drive including an engine driven gear or sprocket journalled in a block whose axis is displaceable transversely to the axis of the cam, a slider member secured for rotation with the gear and guided for linear radial movement relative to the gear or sprocket, and a rack on the slider member engaged by a pinion coupled to the cam for oscillating the cam relative to the camshaft upon sliding movement of the slider in response to eccentrically displacing the axis of the gear.

Abstract: A carburetor with a number of threadedly adjustable fuel/air metering jets, rods or screws is provided with a spring metal flexible retainer clip that surrounds portions of two adjacent metering rods or screws with an interference fit to provide continuous side or lateral compressive forces on the screw threads to prevent backoff of the metering rods or screws during operation of the engine upon which the carburetor is installed due to vibration and temperature changes; the clip consisting of a continuous band of spring steel having reversely bent oppositely located end portions, one portion being formed in the shape of a hook and the other being formed more open to permit the assembly around the pair of adjacent metering rods or screws.