Abstract: A fuel injection system is provided for a multicylinder internal combustion engine. Each cylinder is provided with at least one fuel injector. The system includes a cam-operated pumping plunger which maintains fluid pressure within an accumulator and controls the intermittent application of fluid pressure from the accumulator through a first chamber in which the plunger moves to one end of a metering plunger. The opposite end of the metering plunger coacts with a second chamber in which the metering plunger moves to define a cavity into which fuel is supplied for subsequent feeding to the cylinder injector. Fuel enters the cavity during those periods when the metering plunger is not subjected to the accumulator fluid pressure, the latter being under the control of the pumping plunger. The pumping plunger reciprocates within its chamber and is rotatable about its longitudinal axis. An elongated groove is formed in and encompasses the exterior of the pumping plunger.

Abstract: An idler mechanism for maintaining tension on a drive belt in a drive belt system comprising an idler arm, a pulley mounted on the arm for rotation about a rotational axis, a pivotally adjustable mounting plate, means pivotally mounting the arm to the mounting plate eccentrically with respect to the pivot axis of the plate, and resilient means operatively associated with the pivotal mounting means for resiliently biasing the pulley into tensioning engagement with the drive belt. Application of a predetermined input torque to the pivot axis of the adjustable plate imparts a substantially constant tension to the drive belt substantially independent of belt length within predetermined tolerances.

Abstract: Combustion chamber defining components such as cylinder liners in internal combustion engines are composed of a plurality of metal oxides which combine to impart good wear resistance and thermally insulative characteristics.

Abstract: A flexible continuous device is provided for transmitting torque between a driving pulley and a driven pulley. The device comprises a plurality of strut members arranged in aligned side-by-side relation with each member having a predetermined pitch radius relative to the pulley axes. Adjustably engaging a corresponding surface of each strut member is a continuous flexible band member. The engagement between the band member and each strut member surface is at a greater radius than the pitch radius when the strut member is in contact with the periphery of a pulley. A unit is mounted on each strut member and coacts therewith to retain the band member and strut members in assembled relation. Each unit has a portion thereof which protrudes longitudinally of and overlies the exterior of the band member. The protruding portion of each unit extends a predetermined distance beyond the strut member on which it is mounted. The protruding portions of adjacent units are disposed in substantially nested relation.

Abstract: A method for removing particulates from internal combustion exhaust gases in a system which includes a first gas conduit which connects with an engine exhaust pipe and which communicates with a trapping chamber containing means for filtering or trapping particulate matter present in the exhaust gas. A second gas conduit connects with said first gas conduit at a location upstream of the said trapping chamber and leads to a regenerating chamber which contains an electrically conductive substrate which carries an oxidation catalyst. A third gas conduit carries the hot gas from the regenerating chamber and connects with said first gas conduit at a location also upstream of said trapping chamber. The electrically conductive substrate material within the regenerating chamber is part of an electrical circuit and is heated by current passing therethrough.

Abstract: A transducer calibrating and testing assembly is provided for calibrating the spindle transducers in a multiple spindle machine tool without the need for completely dismantling the machine to perform the calibration operation. The transducer calibrating and testing assembly includes support housing means, and torque applying means, including a test bolt and nut, for applying a known torque to the spindle as measured by a master transducer. The torque applying means is supported by and contained substantially entirely within the support housing means. Torque releaser means for manually or automatically releasing the torque applied by the torque applying means to enable the serial performance of several calibration tests is also provided.

Abstract: A braking system for an internal combustion engine having a gas compressing combustion engine piston reciprocally mounted within an engine cylinder from which gas may be exhausted by opening an exhaust valve by means of a slave hydraulic piston.

Abstract: An aluminum rocker housing (10) is secured to the cylinder head (8) of an internal combustion engine (2) to surround and protect the cylinder valve assemblies (156, 158) and associated rocker arm mechanism. The front face (58) of the rocker housing (10) includes a recessed surface (68) which forms an air intake plenum (60) for receiving pressured air from the engine turbocharger (48). Air intake passageways (84, 86, 88) cast to the rear of the front face (58) communicate with the air intake plenum (60) and simultaneously register with air intake ports (160) formed in the cylinder head (8) to provide a means for distributing air from the air intake plenum (60) to the cylinders (16). A rocker cover (12) molded from plastic is secured to the rocker housing (10) by a plurality of vibration-damping bolt assemblies (13). The rocker cover (12) contains a drip lip (148) to prevent engine lubricants from coming into contact with the rocker cover gasket (14).

Abstract: A unit injector (2) of the cam actuated, open nozzle type is disclosed in which an extremely compact injector body (4) has a minimum number of internal flow passages (66, 72) designed to reduce the complexity and cost of manufacture of the injector. The invention is characterized by an injector body (4) having an exterior shape designed to form a fuel supply flow path (22) and an isolated fuel drain flow path (24) between the exterior surface of the injector body (4) and the interior surface of the recess (6) in which the injector (2) is designed to be received. This arrangement allows a very simple pattern of radial passages (66, 72) to be formed in the injector body (4) even through the injector (2) is designed to provide scavenging fuel flow previously requiring a much more complex injector design.

Abstract: A unit fuel injector assembly (2, 88) is disclosed for periodically injecting fuel of a variable quantity on a cycle to cycle basis as a function of the pressure of fuel supplied to the injector from a source of fuel (48) and at a variable time during each cycle as a function of the pressure of a timing fluid supplied to the injector from a source of timing fluid (54). A reciprocating plunger assembly (24,146) is received within the injector body (10, 106) and includes an upper plunger section (26, 148), a lower plunger section (28,150) and an intermediate plunger section (30,152) in order to define a variable volume timing chamber (32,138), a variable volume injection chamber (34,162) and a variable volume compensation chamber (36,176).

Abstract: A turbocharger assembly including a flexible anti-friction bearing support to prevent loss of gripping interference at high temperatures and destructive compressive loads at low temperatures. A simplified hydrodynamic fluid (such as lubrication oil) supply is disclosed for providing lubricating oil to the anti-friction bearing and hydrodynamic fluid to a hydrodynamic sleeve bearing. A novel end plate design permits limited radial movement of the bearing support while resisting axial thrust loads of the turbo shaft.

Abstract: Method and apparatus for precisely positioning a gear plate (10) on the block (12) of an internal combustion engine equipped with an accessory drive gear train (22, 24, 26, 28, 30, 32, 34 and 36) are disclosed whereby the precise positioning of the gear plate (10) results in the precise alignment of the gears mounted thereon. The present invention achieves this result by utilizing the shafts (56 and 58) of two of the gears (34 and 36) in the gear train as primary and secondary positioning means. Primary and secondary positioning bores (66) are formed in the engine block (12) and in the gear plate (10) and the primary and secondary gear shafts (60) inserted therein to position the gear plate (10) first at a point along a first axis relative to the engine block (12) and secondly at a point along a second axis relative to the engine block (12).

Abstract: A gas bearing supported piston assembly (2) for an internal combustion engine including a piston body (14, 14') and a segmented piston ring (3) arranged to expand to compensate for wear. A piston supporting gas layer (27) is formed between the cylinder walls (8) and the exterior surface of each piston ring segment (32) by means of a plurality of restricted flow passages (40) formed in each segment (32) and extending between the inner and outer surfaces of the segment (32). In one embodiment, gas under pressure is supplied to the ring segments (32) through a single annular cavity (36) formed in piston body (14). In another embodiment, gas under pressure is supplied to the ring segments (32) through a plurality of corresponding holes (70) in piston body (14').

Abstract: A device is provided for locating a fixed point of reference with respect to a predetermined segment of a rotary member while the latter is disposed in a selected position of rotary adjustment. The device includes a bracket adjustably mounted on a support spaced from the rotary member. Removably mounted on the bracket and adjustable independently thereof is an elongated alignment element. The alignment element and the bracket coact with each other and with the support whereby the end of the element is aligned with the predetermined segment of the rotary member when the latter is in said selected position of rotary adjustment. While the element end is so positioned the bracket is fixedly secured to the support. The element is then removed from the fixedly secured bracket and an elongated detecting piece is mounted on the bracket in substitution of the removed alignment element.

Abstract: The disclosure illustrates an electronically controlled fuel pump in which a bypass valve regulates its output pressure to a predetermined level above a control pressure. A downstream throttling valve re-regulates the pressure to a predetermined level below a control pressure. The control pressure is established by an electro-hydraulic valve which is, in turn, fed with signals with a microprocessor to provide appropriate control. The use of the control pressure in effect causes a servo action and utilizes the pressure of the fuel to manipulate the valve and minimize the power requirement of the electro-hydraulic valve.

Abstract: The disclosure illustrates a means for automatically controlling the operation of a cylinder deactivating system in a multicylinder compression ignition engine which system is intended to increase the load on the cylinders that have not been deactivated. The control means is responsive to coolant pump output pressure which varies directly as engine rpm varies. The cylinder deactivating system functions either by cutting off the flow of fuel to the injector for each deactivated cylinder or cylinders or by actuating an engine brake system. The control means automatically stops the operation of the cylinder deactivating system when engine rpm increases to the point that the coolant pump output pressure exceeds a threshold level. This prevents any possibility of injector scuffing or loss of power at higher rpm.

Abstract: An injector for a diesel engine is provided which includes a housing having an internal bore, and a reciprocating plunger disposed within the bore and coacting therewith to pump fuel, dampen plunger movement, and quickly vent fuel pressure to provide a sharp end of injection. The bore is generally coextensive with the housing and a spray tip is attached to the end of the bore to introduce fuel into a combustion chamber. The plunger forms a chamber at the end of the bore that expands to admit fuel and contracts to express fuel as the plunger reciprocates within the bore. The chamber has an upper portion that pumps fuel and a lower sealable portion that entraps fuel to dampen plunger movement. The plunger and bore also form a reciprocating spill valve above the chamber to vent fuel pressure. An internal inlet passage supplies fuel to the pumping chamber portion. An internal spray passage connects the pumping chamber portion to the spray tip. The spill valve communicates with the chamber.

Abstract: A unit injector assembly (2, 40) of the cam actuated, open nozzle type is disclosed in which an extremely compact injector body is actuated by a cam lobe (42) having a stepped profile for causing fuel to be metered into an injection chamber (52) of the injector (2) without blow back of gas into the supply passage (66) feeding fuel to the injector. The invention is characterized by an injector body (4) having a minimum number of internal flow passages (66, 72) designed to reduce the complexity and cost of manufacture of the injector and having an exterior shape designed to form a fuel supply flow path (22) and an isolated fuel drain flow path (24) between the exterior surface of the injector body (4) and the interior surface of the recess (6) in which the injector (2) is designed to be received.

Abstract: An apparatus is provided for forming a pallet having a plurality of runners arranged in spaced parallel relation and subtending a plurality of deck boards arranged in spaced parallel relation. The apparatus includes a surface on which the runners are supported, and power actuated fastener-driving means mounted in overlying relation with respect to a predetermined area of the surface and vertically adjustable relative thereto between operative and inoperative modes. Adjustably mounted on the surface area is a stop means which is adapted, when in one position of adjustment, to be engaged by a runner when the latter is in vertical alignment with the fastener-driving means. An adjustable runner-retention means is provided which, when in one position of adjustment, coacts with the stop means and retains a runner against the stop means while the fastener-driving means is in the operative mode and is fastening corresponding segments of the overlying deck boards to the runner.

Abstract: A valve assembly is provided for controlled draining of a liquid accumulated in a closed vessel. The assembly includes a body member mounted on the vessel and a valve piece adjustably mounted on the body member for movement between open and closed positions. The body member has a first section extending into the vessel interior wherein the liquid accumulates, a second section secured to the vessel, and a substantially exposed third section. The first, second, and third sections are provided with a common primary passage and an independent common secondary passage. Each passage has one end terminating within the vessel interior and a second end terminating externally of the vessel. The body member first section is provided with a stationary valve seat disposed in aligned and spaced relation with respect to the primary passage one end. The valve piece includes an elongated first element slidably and sealingly mounted within the primary passage.