Abstract: A V-type engine is provided with a camshaft driven balance shaft assembly that is compactly located in the valley between the banks of cylinders and consists of a pair of coaxially mounted first and second order balance shafts, one within the other, each of which has diametrically opposed counterweights on opposite sides of the center of the shaft that effect rotating moments to cancel residual first order and second order inertial unbalance moments that occur during normal engine operation that have not previously been cancelled by conventional counterweights mounted on the engine crankshaft.

Abstract: A clutch lockout apparatus for locking out the clutch of a manual transmission is disclosed. The clutch lockout apparatus comprises a first electrical circuit for determining whether a gearbox is conditioned for torque delivery, and a clutch lockout having a projection which is movable from a normally retracted state when the gearbox is conditioned for torque delivery to an extended state when the gearbox is not conditioned for torque delivery. When the projection is in the extended state, movement of the clutch from a disengaged position to an engaged position is prevented. Also disclosed is a method for locking out the clutch of a manual transmission using this apparatus.

Abstract: An automotive engine crankshaft has a pair of vibration balancing masses pivotally secured to and depending from a main bearing cap for oscillatory movements in response to being driven by contoured cam wheels on the cheeks of the crankshaft, the cam wheels engaging rollers or cam follower sliding shoes on a bell crank type balancing mass, the vertical movements of the balancing mass centers providing forces in direct opposition to the forces caused by the engine second order vertical shake unbalance, to cancel the same.

Abstract: An automotive type internal combustion engine driven accessory is connected to the engine crankshaft by a thermal and centrifugally responsive clutch mechanism that includes a centrifugally responsive ring responsive to higher engine speeds to provide slippage between the clutch parts to maintain the accessory drive at a predetermined maximum RPM, that speed level being increased in response to an excessive generation of heat due to the slippage to effect a greater engagement of the clutch and less slippage and therefore a reduction in the amount of heat generated.

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 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: 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: 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 carburetor accelerator pump lockout assembly having an actuating lever connected to the throttle valve shaft by a pin and cam slot connection, the lever pulling down on an accelerator pump lever upon opening movement of the throttle valve to actuate the pump to inject fuel into the carburetor induction passage; the lever having an extended portion adapted to be engaged by a vacuum controlled servo plunger to prevent pumping movement of the lever, vacuum being supplied to a servo chamber from an induction passage port past a number of flow delay devices that delay the decay of vacuum in the servo chamber for 4-5 seconds upon momentary return of the throttle valve to the idle speed position from the off idle position to prevent operation of the pump while permitting operation of the pump when the throttle valve is maintained in the idle speed position for longer than the 4-5 second period.