Abstract: A pump rod has a head extending from a neck, and the head is received within a drive slot of a drive link. The head includes a projection, and has an area smaller than an area of the head. The projection contacts an inner surface of the drive slot. The drive link may include a projection aligned with a centerline of the drive link. The drive link projection contacts a head of the pump rod. The projections provide a reduced contact area between the pump rod and the drive link, thereby reducing any side-loading on the pump rod and increasing a lifespan of the wear parts.

Abstract: A fuel pump includes a holed disk-shaped plate and a coil spring to press the plate toward a lifter. The plate has an inner circumferential surface to be engaged with a groove in a projection-side end portion of a plunger. Also, a joint port that connects the inner peripheral surface of the plate to an outer peripheral surface thereof is provided in the plate. The coil spring is located between the plate and a pump body. The plate is assembled in the fuel pump to dispose the joint port at a position in an opposite direction to the direction of a side force to be generated during compression of the coil spring when viewed from a central axis of the coil spring.

Abstract: A supply pump includes a housing, a tappet, a guide groove, and a stopper pin. The housing includes a cylindrical sliding wall. The tappet is configured to be reciprocated along the sliding wall. The guide groove is provided for one of the housing and the tappet. One end of the guide groove includes a tapered surface. The stopper pin is provided for the other one of the housing and the tappet. The stopper pin is fitted into the guide groove to stop rotation of the tappet relative to the housing. When the tappet is displaced abnormally in an upper direction, the tapered surface is pressed on an end of the stopper pin to be engaged with the stopper pin.

Abstract: A fuel injection pump having a separable plunger includes a separable plunger of which outer circumference is slide coupled to an inside of the a such that a lower portion thereof is supported by an upper portion of a main plunger to enable upward and downward slide movement in association with the main plunger, wherein an injection timing control spiral step of which upper surface is formed in a spiral shape, is protrudingly formed on the outer circumference thereof and a fuel passage is formed on one side of the outer circumference thereof including the injection timing control spiral step and an elastic member having a lower portion elastically supported by the separable plunger and an upper portion inserted within the barrel to be supported by an upper surface of the barrel.

Abstract: Disclosed is a fuel injection mechanism having a horizontal control surface formed within a plunger for regulating the start of fuel injection. The horizontal control surfaces are formed within one or more of the two opposed ridges formed within the plunger defining a recessed channel there between. The horizontal control surfaces of the ridges regulate the opening and closing of the ports formed within the bushing of the injector. The horizontal control surfaces contribute to reduced wear and provide for accurate timing and fuel quantity delivery.

Abstract: A repeater system may control a pump by using a repeater and a user interface. An adhesive patch system may be used for affixing a pump or other object to a human body. Such an adhesive patch system may include two sets of adhesive members, each member including an adhesive material on at least one side so as to attach to the body. The members of the first set are spaced to allow the members of the second set to attach to the body in spaces provided between the members of the first set, and the members of the second set are spaced to allow members of the first set to detach from the body without detaching the members of the second set. Also, fill stations and base stations are provided for personal pump systems.

Abstract: A gyroscopic rotary engine includes a rotary disc used as a cylinder block; a cylinder head on which medium inlets and medium outlets are arranged in a spaced relation; wherein at least two arched cylinders are disposed on the rotary disc in an equally spaced-apart relation; a gyroscopic unit disposed obliquely on the rotary disc relative to an axis of the rotary disc, the gyroscopic unit comprising a rotation shaft and pistons positioned symmetrically about the rotation shaft and having the number corresponding to the number of the arched cylinders, the pistons being disposed in the respective arched cylinders and firmly secured to the rotation shaft by respective connecting rods; and the rotary disc rotatably engaged with the cylinder head.

Abstract: A pumping element for pressurizing a fluid within a fluid pump includes a plunger reciprocally disposed within a bore defined in a barrel. The plunger and barrel at least partially define a pressurization chamber into which fluid is pressurized. A flow path is defined between the plunger and the bore, the flow path permitting fluid to pass from the pressurization chamber during pressurization of fluid disposed therein. A collection chamber is formed between the plunger and the bore, the collection chamber being disposed adjacent to the bore and being part of a cooling circuit for the pumping element. A plurality of weep openings is defined in the barrel and is fluidly connected to the collection chamber. A reduced diameter portion of the barrel forms an annular reservoir that receives fluid from the weep openings.

Abstract: An apparatus and method for compressing a cryogenic media is disclosed. The apparatus includes a compressor compartment surrounded by a cylinder wall, a compressor piston being moved linearly in the compartment, an intake valve, and a compression valve, both valves being arranged in the area of the lower end position of the compressor piston. The compression valve is arranged laterally on the cylinder wall in the area of the lower end position of the compressor piston, and the head of the compressor piston has a conical shape.

Abstract: Disclosed is a fuel injection mechanism for regulating the volume of fuel injected into a cylinder comprising a selectively detachable helix ring configured to be removably affixed to an outside diameter of a plunger. The selectively detachable helix ring includes a ridge that has at least one helix angle. The helix angle is associated with a throttle position of the mechanism.

Abstract: An object of the present invention is to provide a suction-discharge device for fluids capable of sucking fluids continuously and discharging fluids continuously under fixed flow rate and pressure, without substantially bringing about pulsations of even one unit.

Abstract: In a lubricating device for a plurality of lubricating stations, in particular for supplying lubricant to knitting machines, a pump device is provided that serves at the same time as a distributor device. To that end, the pump device has a piston which is provided with a control groove. The corresponding pump cylinder has an inlet and a plurality of outlets distributed over the cylinder wall. Depending on which of the outlets the control groove of the piston is made to coincide with, a corresponding lubricating station is selected. The pump device is thus a distributor device as well.

Abstract: The disclosed syringe pump and valve assembly utilizes a cylindrical housing having a piston axially moved therein for defining a pump chamber, where the housing is mounted to rotate about its longitudinal axis. A port seat is disposed concentrically of this axis spaced from one housing end, and a seal/valving member has one face seated slidably on the port seat and has its opposite face exposed to the pump chamber. Connectors serve to communicate separate liquid lines to separate respective ports on the port seat, which the seal/valving member first face overlies. The seal/valving member has through opening and/or radial or arcuate channels operable in different rotational member positions to selectively isolate or communicate the lines relative to one another and/or the pump chamber. The seal/valving member is designed to rotate in unison with the housing, and mechanism rotates the housing to locate the seal/valving member as required.

Abstract: A brake control apparatus includes a reservoir tank, a master cylinder fluidly connected to the reservoir tank, a wheel cylinder fluidly connected to the master cylinder via a main passage. An auxiliary passage communicates the reservoir tank with the main passage. A pump unit including main and auxiliary pumps coupled in series is disposed in the auxiliary passage. The main pump includes a pump chamber communicated with a delivery port of the auxiliary pump. A return passage communicates the main passage with the main pump. Valves within the main and auxiliary passages, and the pump unit are responsive to a wheel slip control signal from a controller to permit a fluid flow to the wheel cylinder and prevent a fluid flow into the return passage. A supply valve within the main passage, a discharge valve within the return passage, and the pump unit are responsive to a wheel lockup control signal from the controller to permit a fluid flow from the wheel cylinder to the return passage.

Abstract: A groove having a helix angle of zero or more is formed in the plunger of a diesel injector pump, the groove extending along and in association with the port-closing edge of the plunger and along at least a portion of the length of such port-closing edge. The groove interacts with the port that is associated with the port-closing edge to provide, in each of a succession of plunger strokes, initial fuel injection at feed rates lower than those which would obtain in the absence of the groove but without any loss of initial injection pressure, or without substantial loss of such pressure.

Abstract: An axial piston pump has multiple pistons and cylinders with a spill port in each piston. A sleeve controls venting from the spill port and an inlet is provided to each cylinder, by way of a check valve from a fluid supply.

Abstract: A fuel-injection pump for internal combustion engines, particularly an in-line injection pump for diesel engine, with a control bore in the pump cylinder and with an upper control edge for determining the start of feed and an oblique spill edge for determining the end of feed. The pump piston is rotated about its longitudinal axis in order to set the desired feed quantity, for the purpose of achieving a better regulating behavior of the system as a whole, comprising the fuel-injection pump, feed-quantity regulator and internal-combustion engine. The spill edge is subdivided, along its run over a part of the circumference of the pump piston, into portions with different angles of inclination (.alpha..sub.1, .alpha..sub.2) to the axis of the pump piston. The control-edge portion having the large angle of inclination (.alpha..sub.

Abstract: A valveless positive displacement pump having pistons that undergo both rotating and reciprocating motion. The assembly comprises a radially outer, ported first cylinder with an axially outer, closed off end, a radially intermediate combination element having outer surfaces serving as a first piston relative to the main cylinder and inner surfaces defining a cylinder for a second piston. The pistons are concentrically arranged, and each reciprocates and rotates within its own cylinder. The piston part of the intermediate element includes a first chordwise relief adjacent its axially inner end and a second chordwise relief in the middle of its shank portion. An access port extends through a wall of the second relief into the interior of the second element. The axially outer ends of first and second pistons each include means for connection to a drive unit with a rotational axis that intersects but is offset from the rotational and reciprocating pistons.

Abstract: A fuel injection pump has a cam actuated plunger which is moved inwardly in a bore to displace fuel through an outlet. A port is formed in the wall of the bore and at some position during the inward movement of the plunger is uncovered by a control edge to allow fuel to escape from the bore. In order to damp the final inward movement of the plunger a further edge of the groove progressively covers the port so as to restrict the rate at which fuel can escape through the port.

Abstract: A fuel injection pump for internal combustion engines, having a pump piston that moves in a cylinder liner and defines a pump work chamber with the cylinder. The piston has two control edges that cooperate with a control opening in the cylinder liner. One, control edge is oblique, disposed on the jacket face and communicates continuously with the pump work chamber which controls the end of supply. A first upper control edge formed by the face end of the pump piston, controls the supply onset upon overtaking the control opening. For a load- and temperature-dependent shift of the supply onset toward early, the face end of the pump piston has a first region (B), axially indented in the direction of the cam drive, forming a second control edge, which is separated from the flat region (A) on the face end by a longitudinal groove and in the first region a second region (C), indented via shoulders is disposed in turn in the direction of the cam drive, with a third control edge.

Abstract: A prestroke adjustment mechanism for a fuel injection pump comprises a U-shaped lever provided on the outer surface of the pump housing for rotating a timing control rod of the injection pump and a rotation limit pin provided on the same outer surface for limiting the rotation of the U-shaped lever. The timing control rod is linked with a control sleeve on the pump plunger for adjusting the prestroke. By limiting the rotation of the U-shaped lever, the rotation limiting pin limits the height of the control sleeve for ensuring establishment between the top of the control sleeve and the bottom of the upper section of the plunger barrel of a gap for dissipating the force of the spill jet during fuel spill. As a result, the downward force of internal turbulence produced by the spill jet is dissipated, thereby preventing the control sleeve from slipping downward and ensuring stable and reliable prestroke adjustment.

Abstract: A fuel injection pump for internal combustion engines, having a reciprocating pump piston and an annular slide displaceable on the pump piston and having a control bore which cooperates with a control recess on a pump piston that communicates with the pump work chamber via a conduit. Because of a crooked position of the control bore with respect to the piston axis, an ellipse-like opening cross section is created, which in cooperation with the oblique control edge opens a fast, large opening cross section, by way of which in cooperation with an equal pressure valve disposed in the injection line, the fuel can flow out quickly, and a reliable, fast closure of the injection valve is assured. A pressure holding valve is also provided which opens toward the work chamber.

Abstract: A fuel injection device for injection internal combustion engines comprising a main injection plunger and a preinjection plunger, which is arranged coaxially with the latter and separated from the latter, and has a smaller diameter. The preinjection plunger is driven non-positively by the main injection plunger to make stroke movements against the force of at least one spring, which holds the preinjection plunger to bear against the main injection plunger. During the main injection, the working chamber of the preinjection plunger is connected to the working chamber of the main injection plunger, so that the preinjection plunger adds an injection portion to the main injection amount after termination of the preinjection and the spray interval, and the fuel pressure occurring in the working chamber of the preinjection plunger supports the action of the spring.

Abstract: A fuel injector for diesel engines, having at least one pump plunger (1), which is sealingly guided in a plunger bushing (2) and, together with said bushing, defines a high-pressure space (5). The pump plunger (1) has an internal suction valve (6) which creates a fuel injection pump having a small dead volume in the high-pressure region and low construction cost. The suction valve (6) may be provided with a cone-shaped compression spring (7) disposed in the high-pressure region (5) or with a stroke limiting stop (28, 28a).

Abstract: The invention relates to a sloping-edge-controlled fuel injection pump for internal combustion engines, in particular as a direct injector for commercial vehicles. A cam-operated pump plunger, defining the pump working chamber and having an upper control edge effecting the start of delivery and a lower sloping control edge effecting the end of delivery, is guided axially and in a rotationally movable manner in the pump cylinder and has two peripheral grooves which, with two bypasses in the pump cylinder, interrupt the delivery, each bypass, in the projection perpendicular to the axis of the pump cylinder, partly overlapping feed bores arranged in the pump cylinder.

Abstract: A prestroke control device for a fuel injection pump includes at least one control sleeve slidably fitted on at least one plunger, a control rod engaging the control sleeve, the control rod extending perpendicularly to the plunger and rotatable about an axis thereof for varying an axial position of the control sleeve relative to the plunger to thereby control the prestroke of the plunger, and an actuator for rotatively driving the control rod about its own axis. A counterweight is movable in unison with rotation of the control rod for cancelling a rotating force generated by axial movement of the control sleeve and acting upon the control rod.

Abstract: A valveless, positive displacement metering pump is provided by the invention. Such a pump includes a housing, a working chamber within the housing, a piston within the working chamber, the piston including a duct defined by a portion of its outer surface, one or more inflow ports communicating with the working chamber, one or more outflow ports communicating with the working chamber, and a drive cylinder for simultaneously rotating the piston and causing it to move in back and forth strokes within the working chamber. The housing is rotatable with respect to the piston to adjust the timing of the fluid communication between the duct and the inflow and outflow ports, respectively. Such adjustments in timing allow the flow rate of the pump to be fine tuned, and allow each port to experience a partial suction as well as a partial discharge.

Abstract: A control device for a piston of a fuel injection pump actuated by a push rod and a cam, wherein the cam profile successively comprises: a slope which causes the piston to advance rapidly; a slope which causes the piston to return slowly until it covers a fuel supply port; a slope which causes the piston to return rapidly; a level stage; and, finally, a slope which causes the piston to continue the return stroke.

Abstract: In a distribution-type fuel injection pump, a fuel supply passageway, through which a feed pump and a fuel pressurizing chamber communicate with each other, is isolated from a cam chamber and bypasses the same. In order to simplify the construction, the fuel supply passageway is formed in a peripheral wall portion of a housing. On the other hand, a cam mechanism comprises a spring assembly including at least one spring, first and second annular spring seats and an engaging member. The first spring seat has an annular base section and an extension extending from a peripheral edge of the base section toward the second spring seat. The engaging member is fixedly mounted to a forward end of the extension. Prior to incorporation the spring assembly into a hollow body of the housing, the spring assembly is in a state in which the peripheral edge of the second spring seat is engaged with the engaging member under elastic force of the spring.

Abstract: A fuel injection pump for an internal combustion engine includes at least one pump piston movably disposed in a piston sleeve which piston sleeve is fitted in a pump housing. A first arrangement associated with the piston draws fuel through suction ports into a working chamber of the pump during a piston suction stroke. A second arrangement associated with the piston cuts off a connection to a suction side of the pump and thereafter initiates a delivery from the working chamber to an injection nozzle, which delivery is divided into two phases. The second arrangement is operable during a piston delivery stroke. A third arrangement controls the phases and includes the suction ports and an inside edge of the piston sleeve. The inside edge of the piston sleeve is provided on a planar end face of a guide bore of the sleeve and faces the working chamber.

Abstract: A fuel injection pump for internal combustion engines has a pump piston that is axially and rotationally movable in a cylinder and has a control edge and a diversion edge that defines a recess in the jacket face of the pump piston. To limit and adjust the effective supply stroke, the control edge and the diversion edge cooperate with a control opening in the cylinder, which opening communicates with a fuel-filled low-pressure chamber. To prevent cavitation damage during the diversion process, a pre-diversion groove, which extends approximately parallel to the diversion edge, is provided in the portion of the jacket face of the pump piston defined by the control edge and the diversion edge. It is disposed at a distance from the diversion edge such that immediately before the entry of the diversion edge into the control opening, representing the onset of diversion, it connects the pump work chamber, which is at high pressure, to the control opening.

Abstract: A pump nozzle for a diesel engine, in which an injection pump element including a pump piston driven by a cam-shaft and a bushing is combined with an injection nozzle to a unit provide be associated with a motor cylinder. The pump piston is surrounded by an axially shiftable control sleeve controlling the begin of fuel injection in dependence on its axial position. A regulating member is guided on the pump element body for rotation relative to the control sleeve in dependence on an operating parameter of the motor. The control sleeve or the regulating member has a race which has, as seen in a top plan view, a circular shape and including with a normal plane extending in normal relation to the pump piston at least partially a pitch angle. A guide element which is rigidly connected with the respective other part (i.e. the regulating member or the control sleeve cooperates with this race.

Abstract: An injection pump for internal combustion engines having a pump piston and a pump piston bushing, to which a suction chamber is connected, the connection of the suction chamber to the work chamber of the pump is overtaken by the pump piston upon supply onset, and in which a diversion of the pump pressure at the end of supply is effected by re-opening the communication with the suction chamber. At least one separate diversion chamber, defined by a pressure maintenance valve and a throttle is connected to the work chamber via a connection that is likewise openable and closable upon the compression stroke; this connection to the work chamber is opened earlier, at the end of pump supply, than a further connection to the suction chamber.

Abstract: A fuel injection pump for self-ignition internal combustion engines, comprising at least one pump piston which is movably arranged in a piston sleeve and, during its stroke, in one direction draws fuel from the suction side into the working chamber of the pump and in the other direction of travel first cuts off the connection to the suction side and then commences delivery, which is divided into pre-injection and main injection, from the working chamber to the injection nozzle.

Abstract: The injection pump provides preinjection only during engine idling and partial load. This is achieved by providing a main release opening and an auxiliary release opening in the pump cylinder which appropriately register with first and second release grooves in a pump plunger which is rotatable between full load and low idle positions.

Abstract: The valve needle of the injection valve is actuated by a control pressure created by a hydraulic injection system. The control pressure is created by a piston pump and is supplied via a control line to the injection valve. At the beginning of the stroke, a bypass flow path is open with a cross section which decreases continuously with progressing piston stroke. With the aid of the pressure medium volume flowing out through the bypass flow path and decreasing in the course of the stroke, a control pressure which is free from pressure waves and their reflections in the control line and which continuously approaches a desired value is created and supplied through the control line to the valve needle without pressure fluctuations causing an oscillating opening and closing of the needle.

Abstract: A fuel injection pump for internal combustion engines is proposed wherein control over the injected fuel quantity is exercised by regulating the outlet (C) of a second relief line (33) of the working space (5) of the fuel injection pump by means of a control edge (25) positionable as a function of load and/or speed in the part-load range, and optionally of the first outlet cross-sectional area (D), displaced along the stroke, of a first relief line (15). In full-load operation, the effective length of the delivery stroke is limited by opening a relief opening (E) carried by the pumping plunger at a control edge (9). To obtain delivery at reduced fuel injection rate, especially at no load or low load, over as long a stroke length (h.sub.L) as possible, fuel-quantity control is effected, first, with respect to the duration of injection, by means of the control edge (25) which controls the outlet (C), and secondly, by opening, at a constant point along the stroke, the relief opening (E).

Abstract: A plunger assembly within a barrel is transversely split into two segments, with a timing fluid chamber therebetween for controllably varying the distance between the plunger segments in response to pressure applied thereto by a timing fluid introduced under variable pressure through a timing fluid inlet port. As the total length of the plunger assmebly is thus varied controllably, so is its prestroke which is the distance traversed by the plunger assembly on its compression stroke from one extreme position thereof to an intermediate position where the plunger assembly completely covers the fuel inlet port. Not only is the injection timing thus controlled by the injection pump itself, but also a high injection pressure is realized at low engine speed or under light load.

Abstract: A fuel injection pump for internal combustion engines is proposed, in which for normal engine operation the control of the injection quantity and of the beginning and end of supply for injection is effected by means of a control slide which is axially displaceable on the pump piston and in which a radial bore (connecting conduit) controlled by the pump piston is present in the pump cylinder, with which radial bore the pump work chamber can be made to communicate with the suction chamber of the pump. The latest end of supply for the injection is determined in that after a predetermined stroke of the pump piston a relief conduit is arranged to coincide with the radial bore and thereby relieve the pump work chamber. Because the radial bore is only blocked after a pre-stroke has been executed by the pump piston the earliest supply onset also can be controlled with this bore as well.

Abstract: A fuel injection pump for internal combustion engines, in which at least during normal engine operation the injection quantity is effected by controlling a fuel quantity control conduit which is provided in the pump piston in communication with the pump work chamber, via a control slide that is displaceable on the pump piston in cooperation with fuel quantity control openings, the axial position of the control slide determining the onset and end of supply. The earliest possible supply onset is further determined by a supply onset control opening disposed in the pump piston, which opening is sealed by entering into the cylinder liner after a pre-determined stroke extent has been traversed. Subsequent to this entry, an injection pressure can build up in the pump work chamber.

Abstract: A pair of cut-off ports are formed in a plunger and a plunger barrel at a predetermined axial location and registrable with each other to spill pressurized fuel into a zone under lower pressure. A communication passageway communicates a pump working chamber defined by the plunger at one end thereof with the zone under lower pressure. A solenoid valve is arranged across the communication passageway for blocking same. Control means controls the solenoid valve to cause same to selectively assume an open position and a closed position. While the plunger moves toward the pump working chamber, the solenoid valve is closed by the control means to start injection of fuel present in the pump working chamber, and upon registration of the cut-off ports with each other, the fuel injection is terminated.

Abstract: A rotor balancing arrangement is provided for use in a distribution valve to ensure hydrostatic balancing of a rotor located in the distribution valve. Some balancing arrangements provide areas equally spaced around the peripheral surface, each being exposed to the same pressure, however, they are limited to valves which rotate only through a limited arc of rotation. Other valves which rotate provide balancing grooves around portions of the peripheral surface but do not provide any control for the pressure that migrates axially in both directions along the peripheral surface of the rotor. In the subject arrangement, pressure fields of a predetermined size are located on a peripheral surface of a rotor circumscribing first and second outlet ports which open to opposite sides of the rotor. The size of the pressure fields is determined by the relationship of the diametrical clearance between the rotor and a bore with respect to the operating pressure of the system.

Abstract: The fuel injection quantity of a fuel injection apparatus provided with a fuel injection pump is electrically regulated by means of the opening duration of a metering valve. Additionally, a shift in the instant of supply onset controlled in accordance with operating characteristics is attained by means of a change in the return-flow fuel quantity, which is diverted into a refill reservoir and then refilled completely into the pump work chamber by the beginning of the next subsequent injection stroke. Serving as the sole connection between the refill reservoir and a pump work chamber is an overflow conduit, which is opened by two control locations on the pump piston at the end of a supply and shortly prior to the bottom dead center. Both the pump cylinder with the pressure valve and the refill reservoir and the metering valve are inserted in a leak-fuel-proof manner in a cylinder head of the pump housing, which is embodied in two parts.

Abstract: The fuel injection quantity of a fuel injection apparatus provided with a fuel injection pump is electrically regulated by means of the opening duration of a metering valve. Additionally, a shift in the instant of supply onset controlled in accordance with operating characteristics is attained by means of a change in the return-flow fuel quantity, which is diverted into a refill reservoir and then refilled completely into the pump work chamber by the beginning of the next subsequent injection stroke. Serving as the sole connection between the refill reservoir and a pump work chamber is an overflow conduit, the overflow opening of which, located at the discharge location into the pump work chamber, is opened by two control locations on the pump piston at the end of supply and once again shortly before bottom dead center.

Abstract: A fuel injection apparatus with pilot injection and main injection in Diesel engines is proposed. A high-pressure injection pump delivers a main injection quantity to a main injection nozzle, while a hydraulic pilot injection auxiliary pump driven by the supply pressure of the high-pressure injection pump positively displaces a pilot injection quantity, via a piston, and delivers it to a pilot injection nozzle which is either separate or combined with the main injection nozzle. In the main injection area, a storage piston is separately provided, which without being mechanically connected to the pilot injection piston and without a pressure division is initially acted upon solely by the supply pressure of the high-pressure injection pump and only in the course of the pilot injection piston stroke is a line leading on to the storage piston opened up, at least indirectly, for the pumped fuel.

Abstract: A constant-stroke, variable by-pass, plunger-type, jerk pump for injecting fuel-oil into a working cylinder of an internal combustion engine, wherein the plunger comprises a passage-way opening at one end thereof into the working chamber of said plunger and adapted to communicate at its other end with at least one duct connected to the fuel supply and opening into the pump cylinder housing said plunger to temporarily cut off the fuel discharged from said chamber to the fuel injector during the upward stroke of the plunger towards its top dead center, the first fuel discharge phase enabling the fuel to be pre-injected into the engine cylinder whereas the second fuel discharge phase provides for the main injection of fuel thereinto.

Abstract: An apparatus and a method for controlling the capacity of a reciprocating compressor by altering the effective stroke length of the working piston of the compressor is disclosed. The working piston of the compressor has a piston opening extending through the top surface thereof. A bypass piston having a cylindrical portion sized to block the piston opening and a reduced cross-sectional portion designed to allow gas to flow through the piston opening is provided. By adjusting the position of the bypass piston the effective stroke length of the working piston may be controlled to allow modulating compressor operation.

Abstract: In a distributor type fuel injection pump of the type including a plunger arranged for reciprocating and rotative motion, and a fuel injection quantity setting member slidably fitted on the plunger and engageable with a cut-off port formed in the plunger and communicating with a pump working chamber, a second cut-off port is formed in the plunger in communication with the pump working chamber, which opens in an outer peripheral portion of the plunger with which the fuel injection quantity setting member permanently slidably engages, and a plurality of spill ports formed in the setting member in a circumferentially spaced relation, which are smaller in number than the cylinders of an engine for use with the pump. When the plunger moves through each delivery stroke in a low engine load region, the second cut-off port engages each one of the spill ports successively to cause injection of fuel into only part of the engine cylinders.

Abstract: The invention comprises a control valve which is interposed between a hydraulically-operated fuel valve (for an engine) and a hydraulic fluid supply for regulating the operation (i.e, the opening and closing) of the fuel valve. The control valve has a housing-enclosed, sliding plunger which is spring-loaded to urge the plunger in a first direction in the housing, and which is translated in a second, opposite direction against the spring bias, by a contacting, rotating cam. Hydraulic fluid inlet and outlet ports are formed in the housing and are cyclically communicating and closed off from each other, for given periods of time, due to the translations of the plunger. The housing has an adjusting element operative for altering the translation of the plunger relative to the housing, to alter the given time periods and, as a consequence, the fuel valve is selectively and adjustably regulated thereby.

Abstract: In a lubricating device for a plurality of lubricating stations, in particular for supplying lubricant to knitting machines, a pump device is provided that serves at the same time as a distributor device. To that end, the pump device has a piston which is provided with a control groove. The corresponding pump cylinder has an inlet and a plurality of outlets distributed over the cylinder wall. Depending on which of the outlets the control groove of the piston is made to coincide with, a corresponding lubricating station is selected. The pump device is thus a distributor device as well.