Abstract: A temperature probe assembly for reading heat gradients occurring in internal combustion engines or other components. The assembly has a plurality of separate thermocouples each having an inner junction mounted in an associated heat contact ring. These rings are mounted in spaced relationship on a tip of a cylindrical probe member to provide axially spaced and multiple heat pick-up points when the tip is mounted in a test bore in the cylinder head near the combustion chamber. Leads from the thermocouples feed to separate gages remote from the engine. The gages collectively detect temperature gradient by reading electric currents proportional to temperature occurring in the thermocouples during engine testing.

Abstract: A valved unit to control introduction of liquid fuel and venting of vaporous fuel relative to a vehicle fuel tank which unit is mounted on to the tank wall to effectively seal and isolate the tank downstream from a filler tube and related fuel delivery hoses. Tank closure is normally maintained by a closure spring which is overcome by introduction of fuel into the tank which allows movement of the inlet closure valve from its seated closed position and simultaneously opens an associated vaporous fuel vent control valve. When introduction of fuel is terminated, a spring returns the two valve elements back to their closed and sealed positions.

Abstract: A heater, ventilation and air conditioning assembly for a motor vehicle that includes a movable vane (44) that can be moved or pivoted through an assembly of levers (56) and (70) to vary the range of motion and rate of motion of the vane 44 with respect to a pivoting temperature door (30).

Abstract: A valve train mechanism for an internal combustion engine in which each cylinder of the engine has a pair of angulated exhaust valves and a pair of angulated intake valves and in which a crosshead is operated by a rocker arm for actuating a pair of same function valves through spherical connections below a pair inverted bucket tappets that are located in a pair of tappet guides for movement along a pair of axes which are inclined towards each other and which lie in a plane extending normal to the rotational axis of the crankshaft of the engine.

Abstract: A multi-chambered liquid coolant receiving bottle unitized from upper and lower plastic parts forming part of the closed coolant system of an internal combustion engine. When unitized the bottle comprises a pressurized coolant deaeration chamber separated by a convexly curved stationary pressure wall from overflow chamber. The chambers are arranged laterally side-by-side and are hydraulically connected to one another by a hose external of the bottle. The upper plastic part forming an upper portion of the coolant chamber supports a coolant filler neck that operatively mounts a pressure cap thereon. The pressure cap has a lower primary seal, an upper secondary seal and a vacuum breaker valve and cooperates with the filler neck so that coolant is transmitted to the overflow chamber from the deaeration chamber when the coolant of the system expands and from the overflow chamber to the dearation chamber when the system coolant contacts and creates a vacuum.

Abstract: A camshaft timing device includes a camshaft 10 and a drive gear 20 rotatably mounted thereon. An interconnecting shifting shaft 30 has spline 31 and 33 that interconnect with respective splines 16 and 41 on the camshaft and a hub of a drive gear 20. Axial movement of the shaft 30 causes the shaft to rotate the camshaft 30 with respect to the drive gear 20 due to the helical nature of the splines 33 and 41. The axial movement of the shaft 30 is caused by a drive sleeve 50 connected to a pinion gear that is driven through a worm gear 63 by an electric motor 67.

Abstract: A valve train for internal combustion engines utilizing an inverted bucket tappet with a pivot structure operatively disposed between the tappet and the end of the valve stem allowing the valves to be angulated with respect to each other and to the axis of the cylinder in both the transversal and the horizontal planes of the engine. Accordingly on a multi-valve engine, the valves extend radially from the associated combustion chamber to open and increase space in the center of the cylinder head for spark plugs, injectors, or pre-combustion chambers and so that the combustion chamber can be designed with a hemispherical surface, with tangentially disposed valve heads. The construction allows the use of large valves in conjunction with stronger, better-cooled valve seats and bridges. The tappets can be actuated conventionally by direct-acting overhead camshafts or by rocker arms and "T" bridges.

Abstract: A valve train mechanism for a multi-valve internal combustion engine having hemispherical combustion chambers and in which each chamber has a pair of radial exhaust valves located along one side of the longitudinal axis of the engine and has a pair of radial intake valves located along the other side of the aforementioned longitudinal axis and in which an inverted "L" shaped actuator is provided for actuating each of the exhaust and intake valves and the guide pins supporting the actuators associated with at least one pair of same-function valves are positioned relative to the valves so as to cause the actuators to reciprocate along and oscillate about the associated guide pins while the associated pair of same-function valves are moved between an open position and a closed position.

Abstract: A method of operatively coupling an engine connecting rod having an annular opening for a connecting pin with a piston defining apertures in spaced apart pin bosses with the apertures sized differently than the annular opening by use of a connecting pin having a non-uniform diameter, including: first heating the piston so that the apertures in the pin bosses are expanded; chilling the connecting pin; inserting the connecting pin through one of the apertures, the annular opening, and the other aperture; and returning the three parts to ambient temperature conditions so as to axially secure the connecting pin between the spaced shoulders.

Abstract: In an engine air assisted fuel injection system, it is desirable to provide a first range of air flow during engine idle and at low loading conditions. At greater engine speeds and higher loading conditions, a substantially greater second range of air flow is desired. This flow characteristic is achieved by the subject air metering device having dual valve members mounted on an axially positionable shaft. The valves are mounted so that initial movements of the shaft opens only one valve to provide flows within the first range. Further movement of the shaft then opens the second valve to provide flows within the second range.

Abstract: A tappet and camshaft carrier that includes expansion bars which directly interconnect adjacent bulkhead members to compensate for the differential rate of thermal expansion between the carrier and the base to which the carrier is fastened.

Abstract: A variable valve selection assembly for an engine valve train of an engine cylinder head which has dual camshafts and two valves associated with each camshaft per cylinder. The variable valve selection assembly includes two end rocker arms and a middle rocker arm and a selectively actuated latching mechanism operative between an end rocker arm and the middle rocker arm so as to selectively link an end rocker arm with said middle rocker arm whereby an end rocker arm moves independently of said middle rocker arm in some modes of operation and whereby an end rocker arm moves in common with said middle rocker arm in other modes of operation.

Abstract: A valve train mechanism for an internal combustion engine that includes angulated intake valves and exhaust valves extending from an upper wall of the combustion chamber and having an actuator provided with a spherical joint connection for directly actuating inverted bucket tappets associated with the intake and exhaust valves.

Abstract: A valve train mechanism for an internal combustion engine that includes angulated intake valves and exhaust valves extending from a curved upper wall of the combustion chamber and having a cross member provided with a roller and groove arrangement for directly actuating inverted bucket tappets associated with the intake and exhaust valves.

Abstract: This application discloses an aluminum alloy cylinder head for an internal combustion engine having an integral valve stem guide bore therein with integral wear resistant end portions of the bore formed by an integrally bonded but different metal alloy for forming the wear resistant end portions.

Abstract: A three plenum air distribution manifold for intake air to an internal combustion engine with long runners leading from first and second spaced side plenums for delivery of air and recirculating exhaust gases into corresponding combustion chambers of the engine. The side plenums are connected at their outer extremities by an acoustically balanced cross over passage selectively closed by a manifold tuning valve (MTV) for improving engine output torque during low engine speed. A third plenum intermediate the two side plenums communicates directly with the combustion chambers through short runner passages opened and closed by valves (SRVs) for optimizing the output of engine torque during a higher range of engine speeds. The air flow through the manifold is controlled by an onboard electronic controller responsive to operating signals from the engine to change the characteristics of the manifold with different engine speeds.

Abstract: A valve train for internal combustion engines utilizing an inverted bucket tappet with a pivot structure operatively disposed between the tappet and the end of the valve stem allowing the valves to be angulated with respect to each other and to the axis of the cylinder in both the transversal and the horizontal planes of the engine. Accordingly on a multi-valve engine, the valves extend radially from the associated combustion chamber to open and increase space in the center of the cylinder head for spark plugs, injectors, or pre-combustion chambers and so that the combustion chamber can be designed with a hemispherical surface, with tangentially disposed valve heads. The construction allows the use of large valves in conjunction with stronger, better-cooled valve seats and bridges. The tappets can be actuated conventionally by direct-acting overhead camshafts, or by rocker arms and "T" bridges.

Abstract: A hydraulically powered and electrically activated control system for a variable valve selection assembly for an internal combustion engine of the type with two intake valves per cylinder and an overhead valve arrangement so as to selectively produce four different operational modes. The control system includes an ECU responsive to a plurality of engine and vehicle related operative parameters to control solenoid operated valves which selectively direct pressurized fluid to valve rocker arm latching means which either permit pairs of rocker arms to move independently of one another or cause a pair of rocker arms to move together.

Abstract: This invention relates to a method of manufacturing a connecting rod of powder metal and having a stress riser crease formed on a side thrust face of the rod formed by hot forging a sintered powder metal preform which has a generally V-shaped notch molded in a side surface whereby the hot forging folds the spaced surfaces of the notch towards one another in non-bonding close relation to form a deep, almost widthless crease.

Abstract: For a planetary gear unit including several tubular pinion gear shafts which are located by a carrier member in a generally circular pattern, an oil delivery and lubricating assembly which includes plural plug and funnel members, the plug portions being inserted within the tubular pinion gear shafts which thereby orients the funnel member exteriorly of the shafts to intercept lubricating oil and deliver it to a bearing positioned about the pinion gear shaft.