Abstract: A quick connect tube coupling assembly includes a tubular seal member, in the form of a tubular member with an elastomer molded thereon is suitably fixed in the stepped socket bore of a tube receiving socket member, this seal member, in effect, providing the effect of two O-rings, a spacer, retainer and end seal; and a spring retainer is fixed to the socket member whereby this coupling body assembly is adapted to telescopically receive a plug tube having axially spaced apart radial upstanding annular inboard and outboard beads thereon, one of which is adapted to be engaged by the spring retainer. A tubular spring release member is positioned to encircle the tube loosely between the beads whereby the tube can be un-coupled, when desired, by moving this release member axially in a direction toward the inboard bead so as to cause the spring member to flux radially outward of the inboard bead whereby the plug tube can be removed manually from the socket member.

Abstract: An air-assist fuel injection nozzle has an externally actuated plunger journaled for axial movement in the cylinder provided in a nozzle body. The plunger tip contains a central stepped bore which slidably supports a spring bias injection needle valve therein. The plunger, when it is in a raised position, allows a valve controlled supply passage to deliver a metered quantity of liquid fuel into a chamber defined by the cylinder and the valve and of the plunger. The cylinder at the chamber end is closeable by a gas valve disk which in turn has a central aperture defining a discharge passage flow through which is controlled by the inward opening injection needle valve.

Abstract: A variable valve lift and timing valve train mechanism includes a rocker arm having one end thereof operatively engaging a valve and its opposite end being engaged by a valve actuator, the upper surface of the rocker arm intermediate its ends having a predetermined cam surface profile which is adapted to cooperate with a working surface of an angular movable reaction member used to provide a fulcrum to thereby effect pivotal movement of the rocker arm in a valve opening direction. The point of line contact between the cam surface of the rocker arm against the working surface of the upper reaction member and the geometry of the upper surface of the rocker arm cooperate to control the amount of valve lift and its timing. The angular position of the reaction member used to control valve lift being controlled by a pivotable eccentric engaging an axially movable slide pin device interposed between the pivotable eccentric and the reaction member.

Abstract: Each cylinder of an engine is provided with a pair of intake valves and a pair of exhaust valves arranged opposite each other in a V-like pattern and are driven by an overhead camshaft having an associate intake cam lobe for the intake valves and separate exhaust cam lobes on opposite sides of the intake cam lobe. A single direct acting bucket-type tappet journaled in the engine cylinder head is acted on by the intake cam lobe to control opening and closing movement of the pair of intake valves. Each exhaust valve is actuated by an associate intake cam lobe via a valve train that includes a tappet, push rod and a rocker arm, with an integral hydraulic lash adjuster, pivotably supported on a common rocker shaft.

Abstract: A pneumatic direct cylinder fuel injection system for an internal combustion engine includes a pneumatic injector for each cylinder so as to supply a pressurized air/fuel charge to an associate stratified charge chamber forming a part of the associate combustion chamber preferably during the compression stroke of the associate piston, the quantity of fuel being supplied by an electromagnetic fuel injector. The pressurized air for the system can be supplied by an electrical or engine driven air pump or preferably the engine itself can be used as an air compressor with each cylinder having an air source control valve operatively associated therewith to control the flow of pressurized air during the compression stroke of the piston in its associate cylinder.

Abstract: Electrically non-conductive isolators are secured by a press fit into the apertures in the lugs of a metal, floating anchor type nut so as to electrically isolate the nut from an associate metal cage so that during the electro-deposition of paint onto the cage, the paint will not adhere to the nut or the internal threads of the nut.

Abstract: A direct acting hydraulic valve lifter of the type that is reciprocably journaled as in the cylinder head of an internal combustion engine so as to be engaged by a cam on an engine driven camshaft to control opening and closing movement of an associate valve. The lifter includes a follower body having a circular outer tubular wall with an inner integral web closely adjacent to one end thereof that terminates at a stepped bored integral depending piston, the one end thereof being closed by a disk cam engaging foot which forms with the piston and a surface of the web a fluid reservoir. A baffle, fixed to the plunger and to inner surface of the tubular wall, defines an oil supply passage which is adapted to receive fluid via a side port in the tubular wall and to be in flow communication with the fluid reservoir via an aperture in the web. A cup-shaped, closed end cylinder member slidably encircles the plunger to form therewith a hydraulic lash adjuster having a pressure chamber therein.

Abstract: A retainer bushing for securing a linkage rod to an apertured workpiece includes a head with a stepped shank portion extending therefrom with the shank having a relatively wide slot on one side thereof and the head and shank having a narrow slot extending axially therethrough diametrically opposite the wide slot forming a push-in type fastener. The retainer bushing is provided with an axial stepped defining a raised retainer bead in the shank portion having opposed inclined cam ramp surfaces on either side thereof. The linkage rod having at least at one end thereof a rod arm portion provided with a chamfered free end surface and, axially spaced from the chamfered free end, it is provided with an annular groove formed complementary to the retainer bead in the retainer bushing.

Abstract: A poppet covered orifice fuel injector nozzle for use in a direct injection type diesel engine has a spray tip with a spring biased poppet valve journaled for reciprocable movement therein, the lower reduced diameter free end of the spray tip and the head of the poppet valve having opposed frusto-conical valve seat surfaces with a differential angle of about 2.degree. so that seating engagement occurs at the outer peripheral edges thereof. The poppet valve has a fuel supply passage extending through the stem thereof for flow communication with a plurality of circumferentially spaced apart radial orifices that are inclined and located so as to discharge fuel parallel to and directly across the valve seat surface of the poppet valve. A retainer is sealingly fixed to the free stem end of the poppet valve and a damping piston encircles the stem of the poppet valve in position to cooperate with the retainer for one-way damping of valve movement in a valve opening direction.

Abstract: A self crimping connection for inner and outer members and the method of making the same includes providing the inner member with stepped cylindrical exterior walls defining an outboard wall of reduced diameter relative to an inboard wall with an annular groove in the outboard wall; providing the outer member with a stepped bore defining an internal outboard wall and an inboard wall to slidably receive the outboard and inboard walls, respectively, of the inner member, with an annular groove in the outboard wall of the outer member; a first bushing encircling the outboard wall of the inner member and a second bushing encircling the outboard wall of the outer member, with each of the first and second bushings having a body portion and a crimp collar portion, the arrangement being such that as the inner member and first bushing are axially pressed into the outer member and its associate second bushing, the crimp collar portion of the first bushing is crimped into locking engagement into the annular groove in the

Abstract: A valve train for an internal combustion engine of the type having two inlet valves and two exhaust valves per cylinder, with these valves being in a splayed configuration, has a pivotal rocker arm for each of these valves, with these rocker arm sets for the inlet valves and exhaust valves being actuated from a single camshaft having inlet and exhaust cams thereon by the use of cylindrical inner and outer lifter concentrically positioned and located such that their axis of reciprocation is at the intersection of imaginary planes extending through the reciprocating axes of the valves.

Abstract: A diesel unit fuel injector includes a pump assembly having an externally actuated plunger reciprocable in a bushing which with the plunger defines a pump chamber, with flow therefrom during an injection cycle portion of the pump stroke being directed to a fuel injection nozzle of the assembly. The injection nozzle includes a needle type differential area injection valve that is normally biased to a valve closed position by a valve return spring which is positioned in a spring chamber and which is operatively connected to the opposite end of the injection valve.

Abstract: A retainer used for securing an electromagnetic fuel injector to the intake manifold of an engine is in the form of a one-piece grommet, molded of resilient material, which is adapted to be fixed to and to overlie an opening in the intake manifold and which is provided with a socket bore adapted to sealingly receive the discharge end portion of the electromagnetic fuel injector.

Abstract: A valve train module which can be assembled, tested, shipped and then mounted to the cylinder head of an engine and actuated by a camshaft to effect operation of the intake and exhaust valves for the respective associate cylinders formed in part by the cylinder head includes a rocker positioner used with flanged hex head bolts to support and retain a pair of rocker shafts in a predetermined spaced apart parallel relationship to each other, with each such rocker shaft pivotably supporting associate rocker arm assemblies that are maintained in axial spaced apart relationship to each other by rocker arm positioners on the rocker positioner.

Abstract: A rocker arm in an internal combustion engine is pivotably supported by a fixed fulcrum retainer with a rocker key operatively positioned therebetween. The rocker arm and fulcrum retainer each have a concave, semi-cylindrical bearing surface and the rocker key has a pair of spaced apart, opposed convex, semi-cylindrical bearing surfaces, the concave, semi-cylindrical bearing surfaces and associate convex, semi-cylindrical bearing surfaces having radii ratios on the order of 1.7:1 to 3:1 and preferably 2:1 whereby to effect substantial rolling contact of these elements relative to each other. In addition, the rocker arm is preferably of U-shaped configuration as defined by a base with side walls depending from opposite sides thereof.

Abstract: A variable valve lift and timing valve train mechanism includes a rocker arm having one end thereof operatively engaged by a valve actuator, a reaction member having one end thereof engaging an eccentric which can be rotated to change the angular position of the reaction member; a hydraulic lash adjuster including a plunger being operatively positioned in spaced apart relationship relative to the free stem end of an associate valve and substantially coaxial therewith, the plunger having an outboard pivot end projecting toward the stem of the valve, an opposite end of the rocker arm or reaction member pivotably engaging the stem of the valve while the other end pivotably engages the outboard pivot end of the plunger.

Abstract: A valve train module with rocker positioner and non-rotation guide has the rocker positioner and non-rotation guide in the form of a longitudinally extending U-shaped member with lateral outward extending rocker shaft supports adapted to retain a pair of rocker shafts in parallel spaced apart relationship to each other, with each of the rocker shafts pivotably supporting a plurality of rocker arms thereon actuated by hydraulic roller valve lifters operated by an engine driven camshaft for the valves in the cylinder head for a bank of cylinders, the U-shaped member having a base and parallel upright side walls with the base having bolt receiving apertures for its attachment to a cylinder head and each of the walls having at least a plurality of spaced apart pierced openings defined in part by sets of spaced apart inward extending rocker guide flanges to effect the pivotal positioning of an associate rocker arm, the base further having spaced apertures arranged to operatively receive an associate flat sided hyd

Abstract: A valve train module used to effect operation of both the intake valve and the exhaust valve for a cylinder of an internal combustion engine includes a housing adapted to be secured to the cylinder head of the engine, the housing supporting a single engine driven camshaft having both intake and exhaust cam lobes thereon. In a preferred embodiment a direct acting hydraulic lash adjuster journaled in the housing is used to effect operation of the intake valve by the intake cam lobe while operation of the exhaust valve is by a rocker arm pivotally supported on a rocker shaft fixed to the housing and by a roller follower reciprocably journaled in the housing so as to operatively interconnect the exhaust cam lobe to one end of the rocker arm, the opposite end of the rocker arm having a hydraulic lash adjuster operatively positioned therein and operatively connected to the exhaust valve.

Abstract: A direct acting cam-valve assembly for an internal combustion engine having an engine block means defining a port includes an internal/external cam fixed to an engine driven camshaft and a direct acting cam follower having one end thereof driven reciprocably by the internal/external cam to push an associated poppet valve from a closed position to an open position and to pull the valve from the open position to the closed position. A conventional hydraulic lash adjuster is operatively positioned in the cam follower whereby one end of the lash adjuster abuts against the free valve stem end of the valve and a spring is operatively positioned in the opposite end of the cam follower and operatively connected to the valve stem end of the valve whereby to, in effect, operatively connect the valve to the cam follower.

Abstract: A valve deactivator mechanism includes a flanged valve actuator that is operatively connected to a conventional spring biased poppet valve, either intake or exhaust, and which is slidably received in a flanged cam follower adapted to be reciprocated by an engine driven camshaft, a spring being operatively positioned to normally bias the flanges of the cam follower into engagement with each other and, a solenoid coil is operatively positioned such that when it is energized the flange of the valve actuator acting as an armature is electromagnetically coupled to the flange of the cam follower that operates as a solenoid pole piece whereby the cam follower actuates the valve actuator to control the opening and closing movement of the poppet valve and, when the solenoid coil is deenergized the valve actuator is uncoupled from the cam follower whereby the poppet valve is deactivated.