Abstract: A valve train for a reciprocating internal combustion engine has a fulcrum means and a rocker arm that define a pair of cooperating outer and inner cylindrical bearing surface contours, respectively, for carrying the reaction forces of rocker arm pivotal movement, the radius of the outer conformation being substantially two times the radius of the inner conformation, with the center of revolution of the outer conformation being located on the operating axis of the valve, the inner conformation of the rocker arm being located such that an extension thereof will intersect the contact point of the rocker arm on the axis of the valve at the free end thereof or on a lifter positioned between the rocker arm and valve. Restrainer means are provided to anchor the cooperating cylindrical conformations for substantially rolling action in relation to each other.

Abstract: An electromagnetic unit fuel injector for use in a diesel engine includes a housing with a pump therein defined by an externally actuated plunger reciprocable in a bushing and defining therewith a pump chamber open at one end for the discharge of fuel to a spring biased, pressure actuated fuel injection nozzle. The pump chamber is also connected to a first chamber via a solenoid actuated, normally open, hollow pressure balanced poppet valve controlled passage to permit the ingress and egress of fuel. The first chamber adjacent to one end of the valve is in flow communication with a second chamber at the opposite end of the valve and these chambers are connected to a drain passage and supply passage, respectively. During a pump stroke, the solenoid can be energized to move the valve in position to block flow from the pump chamber to the first chamber so as to allow the pressurization of fuel by the pump to effect discharge of fuel from the injection nozzle.

Abstract: A hydraulic lash adjuster has a cylindrical body and a hollow plunger slidably received within the body, with the upper portion of the plunger extending beyond the body and it is provided with a semi-spherical thrust end for sliding engagement with a complementary shaped thrust receiving member. The plunger has an internal oil reservoir supplied with oil at a predetermined pressure and the thrust end is provided with a through bore for the flow of oil therethrough to effect lubrication of the thrust surfaces. A metering valve assembly is positioned in the bore and includes a ball valve operatively received in a cup-shaped valve retainer having a clover-shaped aperture in the base, the ball valve cooperating with this aperture to control oil from the reservoir.

Abstract: An electromagnetic unit fuel injector for use in a diesel engine includes a housing with a pump therein defined by an externally actuated plunger reciprocable in a bushing and defining therewith a pump chamber for the discharge of fuel to a spring biased, pressure actuated fuel injection nozzle. The pump chamber is also connected to a fuel chamber via a solenoid actuated, normally open, pressure balanced control valve controlled passage to permit the ingress and egress of fuel. The solenoid and control valve are located concentrically with respect to the plunger. During a pump stroke, the solenoid can be energized to move the valve in position to block flow from the pump chamber to the fuel chamber so as to allow the pressurization of fuel by the pump to effect discharge of fuel from the injection nozzle.

Abstract: An exhaust cleaner and burner system for use with a diesel engine has a housing with an inlet at one end for receiving exhaust gas from an engine and an exhaust outlet at its opposite end with a particulate filter positioned therein intermediate the inlet and the exhaust outlet having an inlet face axially spaced from the inlet. A fuel burner device is operatively positioned in the housing in axial spaced apart relationship to the inlet face of the filter and is adapted to be connected to an air/fuel mixture source and has an igniter for the air/fuel mixture. A rotatable flame distributor is operatively associated with the fuel burner device whereby to direct a flame discharged from the fuel burner device incrementally across the inlet face of the filter so as to sequentially effect complete burning of collected particulates.

Abstract: A particulate trap for removing particulates from the exhaust flow discharged from a diesel engine comprises a trap housing having an inlet connection and an outlet connection for the exhaust flow, an intermediate filter housing with a support plate positioned between one end of the filter housing and the outlet connection. The support plate is provided with a central one way valve controlled bypass passage extending therethrough and a plurality of closely spaced apart internally threaded apertures therethrough located around the bypass passage. A plurality of filter tubes are operatively supported within the filter housing by the support plate. Each of the filter tubes includes a perforated tube having an externally threaded outlet fitting fixed at one end thereof that is releasably threadingly engaged in an associate one of the apertures in the support plate whereby the perforated tube is supported in cantilever fashion.

Abstract: A valve train for a reciprocating internal combustion engine has a fulcrum means and a rocker arm that define a pair of cooperating outer and inner cylindrical bearing surface contours, respectively, for carrying the reaction forces of rocker arm pivotal movement, the radius of the outer conformation being substantially two times the radius of the inner conformation, with the center of revolution of the outer conformation being located on the operating axis of the valve, the inner conformation of the rocker arm being located such that an extension thereof will intersect the contact point of the rocker arm on the axis of the valve at the free end thereof.

Abstract: A valve spring damper has a split ring, to frictionally engage the coils of the valve return spring for a valve, and integral radial extending load carrying feet against which one end of the return spring abuts, the surface of each foot opposite the spring being provided with a semi-spherical embossment in order for the feet to accommodate to a support surface that may be normal or inclined relative to the reciprocating axis of the poppet valve.

Abstract: An electromagnetic unit fuel injector for use in a diesel engine includes a housing with a pump therein defined by an externally actuated plunger reciprocable in a bushing and defining therewith a pump chamber open at one end for the discharge of fuel to a spring biased, pressure actuated fuel injection nozzle. The pump chamber is also connected to a spill chamber via a solenoid actuated, normally open, hollow, ported valve controlled passage to permit the ingress and egress of fuel. The spill chamber adjacent to the head end of the valve is in flow communication with a supply chamber at the opposite end of the valve and these chambers are connected to a drain passage and supply passage, respectively and are interconnected to each other by the valve and by a second passage in parallel with the hollow valve.

Abstract: An electromagnetic unit fuel injector for use in a diesel engine includes a housing having a bushing with an externally actuated plunger reciprocable therein to define a pump chamber open at one end for the discharge of fuel to a spring biased, pressure actuated fuel injection nozzle. The pump chamber is connected to a supply and spill chamber means via flow-through solenoid actuated, normally open, hollow pressure sensitive valve to permit the ingress and egress of fuel. The supply and spill chamber means adjacent to the head of the valve is in flow communication with a pressure equalization and spring chamber means at the opposite end of the valve via a passage through the valve and these chambers are in direct flow communication with a source of fuel at a relatively low supply pressure.

Abstract: A particulate trap for use in the exhaust system of a diesel engine to effect removal of particulates from the exhaust gases discharged from the engine, has a trap housing with an exhaust inlet at one end and an exhaust outlet at its opposite end with at least one ceramic monolith wall flow particulate filter having an inlet end and an outlet end positioned in the trap housing by a tubular support member having a mat of refractory material sandwiched between it and a portion of said particulate filter next adjacent to the outlet end thereof in a manner to prevent bypass flow from said exhaust inlet around said particulate to the exhaust outlet, at least 50% of the exterior surface of the particulate filter next adjacent to its inlet end being in spaced apart relationship to the trap housing so as to define a passage in flow communication with the incoming exhaust gases whereby these gases will heat the exterior of the filter next adjacent to the inlet end thereof so as to effect a reduction of the thermal str

Abstract: A fuel injection nozzle with heated valve for flash boiling of fuel during injection includes a nozzle body of electrical conductive material with a spring biased valve of electrical conductive material operatively positioned in an axial extending fuel passage within the nozzle body so as to control the flow of fuel out through a discharge outlet at one end of the nozzle body. An electrical insulator sleeve encircles and is fixed to the valve intermediate the ends thereof so as to support a coiled electrical heater wire that is connected at one end to the valve adjacent to its tip end and which is connected at its opposite end to an electrical conductor sleeve that is fixed to the insulator sleeve.

Abstract: A diesel exhaust particulate trap is provided with a heat resistant particulate filter which includes a perforated and pleated metal substrate member coated with a ceramic fiber filter material on its interior surface so as to define a filter chamber for the inside-out flow of exhaust gases through the filter. In a preferred embodiment, an electrical particulate filter igniter is associated with the filter. The igniter includes a trap door pivotably secured to the substrate member, which is normally biased to a closed position by a spring but which can be opened by exhaust flow prior to an accumulation of particulates on the filter. Opening and closing of the trap door is used to effect deenergization and energization, respectively, of an electrical heating element used to initiate combustion of particulates.

Abstract: A nut lock device for use in an engine valve train of the type wherein a rocker arm is pivotable about a fulcrum member to effect opening and closing movement of a spring biased poppet valve, the fulcrum member being supported on a support stud and retained thereon by a retainer nut threaded on the support stud, the improvement wherein the bearing surface of the retainer nut is inclined at an angle to a plane extending at right angles to the axis of the support stud and, wherein the nut reaction surface on the fulcrum member is inclined in a complementary manner to that of the retainer nut for mating engagement therewith whereby to define a cam lock preventing rotation of the retainer nut relative to the support stud during engine operation.

Abstract: An electromagnetic fuel injector includes an armature stop member, providing a flat surface with the lower body portion being of semi-spherical configuration, which is pivotably positioned in a conforming ball socket provided in the free end of an armature so that the flat surface extends outboard of the armature whereby it can abut against an associate pole piece to provide for a fixed minimum air gap between the pole piece and armature. In the event of any slight skewness between the axis of the pole piece and the reciprocating axis of the armature, the armature stop member will pivot, as necessary, to effect parallelism of the flat surface thereof with the flat working surface of the pole piece.

Abstract: An electromagnetic fuel injector is provided with a one piece armature/valve member that is guided at its armature end by a guide washer and at its ball end by a guide means in the injection nozzle assembly of the injector, a spring applying a clamping force on these guide provision members to fix them within the nozzle body of the nozzle assembly.

Abstract: An electromagnetic fuel injector has an axially adjustable nozzle assembly which provides an annular valve seat cooperating with a movable armature/valve member having at one end thereof a semi-spherical valve element and having at its opposite end a ball guide socket therein. A semispherical guide and stop member is positioned to be slidably received in the ball guide socket to guide the armature/valve member during reciprocation thereof and it is also used to provide a stop for the armature/valve member in the direction of its travel toward an associate pole piece so as to provide a fixed minimum air gap between the opposed working faces of these elements.

Abstract: A diesel particulate trap and method of making the same wherein ceramic powder supported by a carrier fluid is deposited by normal fluid flow through the porous walls of the inlet channels in a ceramic monolith filter are fired in place so as to define inlet channels of decreasing cross-sectional flow area and increasing wall thickness relative to the distance from the inlet end to the outlet end of the filter.

Abstract: An elongated particulate trap to fit the area usually occupied by the vertical cylindrical muffler, as on a large diesel truck, consists of rings of axial flow filter elements and a disc-like axial flow end filter element stacked in a trap housing, having an exhaust inlet and outlet at opposite ends, so as to provide a central flow passage for entry of exhaust gases via the exhaust inlet and so as to define with the trap housing and exhaust passage in flow communication with the exhaust outlet. The filter elements are stacked in spaced apart relationship to each other whereby to provide an axial gap therebetween to allow radial flow on one face of the filter elements. The axial gaps are sealed alternately on inner and outer radial ends to define outlet and inlet passages, respectively and to force axial flow through the filter elements whereby particulates will be removed from the exhaust gases.

Abstract: The reciprocating plunger reciprocable in the pump cylinder of a distributor type diesel fuel injection pump is helically splined to an index ratchet gear that is also operatively associated with a pawl detent whereby the index ratchet gear is rotatable in only one direction. The plunger has a discharge slot on its outer peripheral surface which registers with one of the plural discharge ports opening from the pump cylinder and the plunger controls the covering and uncovering of a fuel inlet port to the pump cylinder. Upon a pump stroke of the plunger, the index ratchet gear is rotated so that the next adjacent tooth is brought into alignment with the pawl detent to then prevent its rotation in the opposite direction during the suction stroke of the plunger.With the index ratchet gear thus fixed, the plunger is thus rotated on the suction stroke so as to align the discharge slot with the next adjacent discharge port.