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: An engine assembly may include an engine structure defining a combustion chamber, a fuel injector in fluid communication with the combustion chamber, a fuel supply and a fuel pump assembly. The fuel pump assembly may include a housing, a reciprocating member, and a solenoid valve assembly. The housing may define an inlet in fluid communication with the fuel supply, an outlet in fluid communication with the fuel injector, and a bypass passage. The reciprocating member may be located within the housing to define a compression chamber in fluid communication with the inlet, the outlet, and the bypass passage. The solenoid valve assembly may include a valve member located within the bypass passage and displaceable between open and closed positions to selectively provide fluid communication between the compression chamber and the fuel supply during a compression stroke of the reciprocating member.

Abstract: A control device of a high-pressure fuel pump of an internal combustion engine capable of improving stability in controlling the drive of the high-pressure fuel pump by limiting the end timing of a drive signal of the high-pressure fuel pump and driving an actuator in a control effective range of the high-pressure fuel pump. The control device of the high-pressure fuel pump of the internal combustion engine has a fuel injection valve provided on a cylinder and the high-pressure fuel pump for pumping fuel to the fuel injection valve, wherein the high-pressure fuel pump comprises a pressure chamber, a plunger for pressurizing the fuel in the pressure chamber, a fuel valve provided in the pressure chamber, and the actuator for operating the fuel valve. The control device has means for calculating the drive signal of the actuator so as to realize the variable discharge of the high-pressure fuel pump.

Abstract: The invention provides a fuel injection pump comprising a pump housing and a pumping arrangement associated therewith, wherein the pumping arrangement includes a pumping plunger and a plunger drive arrangement, the pumping plunger having a first end reciprocably received within a plunger bore provided in the pump housing and a second end coupled to the plunger drive arrangement. A biasing spring is provided having first and second spring ends, the first spring end coupled to a spring plate member associated with the pump housing and the second spring end coupled the plunger drive arrangement. The pump housing includes first and second portions aligned on a common axis, the upper portion including a further bore in which at least an upper portion of a locking pin is receivable and wherein the spring plate member defines support means for supporting a lower end portion of the locking pin.

Abstract: The invention provides a fuel injection pump comprising a pump housing and a pumping arrangement associated therewith, wherein the pumping arrangement includes a pumping plunger and a plunger drive arrangement, the pumping plunger having a first end reciprocably received within a plunger bore provided in the pump housing and a second end coupled to the plunger drive arrangement. A biasing spring is provided having first and second spring ends, the first spring end coupled to a spring plate member associated with the pump housing and the second spring end coupled the plunger drive arrangement. The pump housing includes first and second portions aligned on a common axis, the upper portion including a further bore in which at least an upper portion of a locking pin is receivable and wherein the spring plate member defines support means for supporting a lower end portion of the locking pin.

Abstract: An advance arrangement for use in controlling timing of fuel delivery by a fuel pump for use in an engine comprises an advance piston (12) which is slidable within a first bore (14) and which cooperates, in use, with a cam arrangement of a fuel pump to adjust the timing of fuel delivery by the pump. A surface associated with the advance piston (12) is exposed to fuel pressure within a first control chamber (38). The pressure of fuel within the first control chamber (38) is controlled by means of a servo piston (24) which is slidable within a further bore (22) provided in the advance piston (12). The servo piston (24) is responsive to speed dependent fuel pressure variations within a servo control chamber (37), thereby to permit adjustment of the timing in response to engine speed.

Abstract: In an injection pump element 2, a communication route for communicating an injection pipe 3 connected to a fuel liquid outlet 212 and an inner peripheral surface of a plunger barrel 25 is formed by a purge passage 242 formed in a delivery valve seat 24, a purge passage 252 formed in the plunger barrel 25, and a purge port 253. When the injection pump element 2 is in a non-injection state, the plunger 26 is rotated circumferentially to such a rotational position that a purge groove 265 formed in an outer peripheral surface of the plunger 26 and a purge port 253 formed in an inner peripheral surface of the plunger barrel 25 are communicated to each other. The purge groove 265 is communicated to a fuel gallery 11 via a hole 263 and a notch 262. When the injection pump element 2 is in the non-injection state, the injection pipe 3 is communicated to the fuel gallery 11 even if the delivery valve 23 is closed.

Abstract: Systems and methods for reducing engine emissions in a locomotive are presented. In an embodiment, a fuel injector or a fuel injection pump of a fuel injection mechanism includes a plunger with an upper helix whose angle changes between points on the plunger that correspond to an idle throttle position and a full throttle position. As such, injection timing is optimized, and engine emissions are reduced.

Abstract: Systems and methods for reducing engine emissions in a locomotive are presented. In an embodiment, a fuel injector or a fuel injection pump of a fuel injection mechanism includes a plunger with an upper helix whose angle changes between points on the plunger that correspond to an idle throttle position and a full throttle position. As such, injection timing is optimized, and engine emissions are reduced.

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 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: In a fuel injection pump including a plunger barrel provided with a fuel pressure chamber, a plunger which reciprocates within this plunger barrel to take in fuel from a fuel reservoir chamber and deliver this fuel from the fuel pressure chamber under pressure, and a timing sleeve which is positioned between the plunger and the plunger barrel such that it slidably mates with the outside of this plunger, and on which a spill port is formed; a fuel injection pump is characterized by an impingement-cushioning cavity being formed on the surface of the inside wall of the plunger barrel in a position opposite the spill port of the timing sleeve along with the peripheral surface of the timing sleeve being formed in a certain shape corresponding to this impingement-cushioning cavity.

Abstract: A fuel injection pump for internal combustion engines has a pump housing, at least one pump piston which is rotatable and reciprocatingly movable, a cam drive which rotates and reciprocatingly moves the pump piston and includes a stationary part and a rotatable part, a fixing element which determines a rotary position of the stationary part and also radially engages the stationary part and is fixed tangentially to the stationary part, a valve operative for loading a pump working chamber limited by the pump piston during a feed stroke of the pump piston for controlling an injection-active pump piston stroke, and a mounting element which releasably mounts the fixing element on an inner side of a part of the pump housing.

Abstract: A fuel injection pump for internal combustion engines having a pump piston driven to reciprocate by a cam drive, guided axially in a cylinder bore of a cylinder bush in which with one face end the pump piston defines a pump work chamber. The control piston has on a jacket face an oblique control edge that cooperates with a control opening in the cylinder bore. This control opening is embodied in an oval shape for the sake of a slight prepumping effect at the injection onset and a rapid opening at the end of injection, and is disposed obliquely enough in the cylinder liner so that a longitudinal axis of the oval extends approximately parallel to the oblique 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 pump piston that reciprocates in a cylinder liner inserted into a pump housing. The pump piston and housing encloses a pump work chamber, and the pump piston has a control recess on its jacket face that communicates with the pump work chamber through a conduit. An oblique groove extends at a predetermined angle from the axis of the pump piston in the jacket face thereof and forms control edges. An annular slide is axially displaceable on the pump piston and includes two diametrically opposed diversion bores. To interrupt the high-pressure pumping to provide a pre-injection quantity and a main-injection quantity, first, second and third pockets are additionally machined into the jacket face of the pump piston. These pockets cooperated with pockets machined in the annular slide and with the control edge formed by the lower face edge of the annular slide to control the fuel flow.

Abstract: A fuel injection pump having a pump piston in a bore of a pump cylinder, wherein the pump piston is rotatable for fuel control, and having a niche disposed in the pump cylinder for receiving a control slide, wherein the niche can be made by non-cutting shaping. The niche has a flat niche bottom, which changes into two oblique niche walls, which extend in two straight parallel niche walls facing one another, these parallel niche walls in turn, change into oblique faces and terminate in slideways, in which the control slide is guided against twisting by slide runners that simultaneously act as impact aprons. The niche is embodied by non-cutting shaping in such a way that its wall thickness relative to the cylindrical outer shape of the pump cylinder is embodied as virtually constant.

Abstract: A fuel injection pump for internal combustion engines, having a reciprocating pump piston that is guided in a cylinder liner, having a control slide that is axially displaceable on the pump piston, inside a lateral recess of the cylinder liner, and is moved via an adjusting shaft that is located in a transverse conduit disposed in a pump housing transversely to the cylinder axis. The transverse conduit intersects the housing bore that receives the cylinder liner in the region of a recess that form a partial suction chamber, forming a through opening for a lever of the control slide, and it also serves to drain fluid from the partial suction chamber.

Abstract: A fuel injection pump for internal combustion engines having at least one pump piston each of which include one control slide that is axially displaceable on the pump piston. For fuel control, the pump piston is also rotatable, while the control slide is secured against torsion, and a ball-shaped tang that engages a slit of a rider is present on the control slide. The tang is controlled by the rider and a control rod to control the fuel injection quantity.

Abstract: A fuel injection pump designed to deliver an amount of fuel divided into a pilot and a main injection volume, including a surface of a pump plunger which is guided within a pump cylinder, apart from two recesses limited by an inclined control edge, a first horizontal control edge is formed by a frontal shoulder; and on a side opposite the shoulder, it has a fully enclosed transverse groove with a second and third control edge. Two control apertures and an annular groove above them in the wall of the pump cylinder effect the control, in conjunction with the aforementioned control edges, of the precisely determinable pilot injection and, after a delivery interval, determined by the difference (b-a) between the width (b) of the transverse groove and the distance of the annular groove to the control aperture, the subsequent main injection.

Abstract: Fuel injection pump for internal combustion engines comprising a displacement pickup for determining the position of control elements arranged in a pump housing. The displacement pickup comprises a movable part, which is arranged in the pump housing and is connected with the control element, and a stationary part which is arranged on the outside of the pump housing. The position of the movable part of the displacement pickup is determined by the stationary part by means of a measuring process which measures in a contactless manner, e.g. by means of the induction or eddy current principle.

Abstract: A fuel injection pump for internal combustion engines with a load- and/or rpm-dependent injection course formed by a reciprocating fuel control slide and a piston pump. The piston includes oppositely disposed slits and the reciprocating control slide has a graduated recess on its lower edge oriented toward the pump piston control slits, or the lower edges of the control slits are given a suitable geometry for fuel control.

Abstract: The invention is based on a fuel injection pump having an adjuster, actuatable via an adjusting mechanism; the adjusting mechanism has an adjusting piston which is displaceable in a cylinder and is adjustable counter to a restoring force by a pressure fluid. The delivery of pressure fluid to the adjusting piston is controlled via electric valves, and by means of various geometrically defined adjusting piston positions, exact injection adjustment is possible without requiring technically complicated feedback sensors on the adjuster.

Abstract: A reciprocable plunger fuel injection pump has a pump body and a plunger slidable in a bore in the body. The plunger is coupled to an arm extending outwardly from the body and movable about the axis of the plunger in order to vary the angular setting of the plunger. A spring clip partly embraces a cylindrical portion of the pump body. The clip defines an abutment surface for engagement by the arm to set the arm and plunger at a predetermined angular position.

Abstract: A fuel injection pump for internal combustion engines is proposed, in which to attain particularly quiet operation of an engine that is operated with direct injection, the fuel delivery is subdivided into a preinjection and a main injection; this injection is attained by annular groove, coinciding with one another, on the pump piston and pump cylinder, and a connecting groove connecting the coinciding annular grooves with a relief opening. After a partial stroke in the region of coincidence of the annular grooves with one another, the communication with the relief opening is interrupted again. The preinjection quantity can be kept particularly small here, with a short interval between the preinjection and the main injection; in combination with a two-spring-holder injection valve, this particularly small preinjection quantity can be kept constant to a great extent even at varying engine speeds, to attain an optimal reduction in combustion noise at various engine speeds.

Abstract: In a fuel injection pump for diesel engines, in which at least one pump piston (5) forms a high pressure chamber (6) with a pump piston bushing (1) and is surrounded by a control sleeve (3), whereby the angle position between pump piston (5) and control sleeve (3) is variable to adjust the quantity, and whereby an axial bore hole (11) in the pump piston (5) connects the high pressure chamber (6) with a control bore hole (12) or with a groove forming a shutoff edge and a startup edge to end the injection process, which works together with a control edge (15,17) or control bore hole of the control sleeve (3), an intake and/or supply bore hole (7), separate from a discharge bore hole (9), is provided.

Abstract: A fuel injection pump of the distribution type provided with a load timer is disclosed. This load timer includes a relief hole formed axially in a governor shaft, a first communication passage extending through a peripheral wall of the governor shaft surrounding the relief hole, and a second communication passage extending through a peripheral wall of a governor sleeve. As a load of an engine increases, the governor sleeve is retracted, and the area of communication between the first and second communication passages is decreased, so that the pressure within a pump chamber is increased. As a result, a fuel injection timing determined by a main timer is advanced.

Abstract: A fuel injection pump for internal combustion engines includes a cylinder sleeve having a first bore and a damping space communicating with the suction space of the pump, and plunger having a smaller diameter portion extending into the bore and displaceable therein to effect delivery of fuel to the internal combustion engine. The fuel injection pump further includes a cam drive for displacing the plunger and a return spring for biasing the plunger to an initial suction position thereof and into engagement with the cam drive. The plunger has a larger diameter portion extendable into the damping space during a delivery stroke for adjusting a volume of the damping space and defining at an end of the delivery stroke, a throttle gap that forms a sole connection between the dampening space and the suction space of the pump.

Abstract: A fuel injection pump for internal combustion engines that has a pump interior and a final control element chamber, separated from it, the latter having an electric final control element for actuating a quantity adjusting device that determines a fuel injection quantity, parts of the final control element from which a control variable for the injection quantity is derived and which thereby serves as a material measure, are to be protected from the influence of fuel. By means of a jet pump through which a permanent propulsive flow flows and which is part of a flow conduit, the static pressure at the intake bore of the jet pump that communicates with the final control element chamber is lowered, and this negative pressure is utilized for evacuating the fuel entering the final control element chamber in the form of a leakage flow along the bearing of a control shaft.

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: A fuel injection pump including a housing having an adjustable coupling device on the outside of the housing by which the speed governor can be adjusted from outside the housing of the fuel injection pump. By use of the adjustable coupling device on the outside of the housing, it is possible to eliminate production-oriented parts tolerances by means of adjustments of the speed governor, without tampering with its internal conditions.

Abstract: The invention is drawn to a pump having a piston which is reciprocable within a cylinder. The cylinder has a closed end including a liquid outlet and port means to introduce a liquid into the closed end of the cylinder. The piston has on its peripheral surface a helical groove means fluidly connected to the closed end of the cylinder and a second groove to communicate the port with the closed end of the cylinder when the piston is in a position between a location in which the port directly communicates with the closed end of the cylinder and a location in which the port communicates with the helical groove means. The second groove in the peripheral surface of the piston is located between the helical groove means and the part of the piston adjacent to the closed end of the cylinder. The second groove also communicates with a cutaway portion in the wall of the cylinder that is coaxial with the axis of the port.

Abstract: A hydraulic control device for fuel injection pumps of internal combustion engines, having a control conduit that branches off from a high-pressure chamber, such as a pump work chamber, and acts in a control chamber upon a control face of a stepped piston for hydraulically stepping down the volume, the piston working face having the smaller diameter defining a closed work chamber, which has an outflow controllable by a valve; a functional face on the movable valve element is acted upon from the work chamber and determines the time/cross section control.

Abstract: A method is proposed for improving the operating behavior of motor vehicles driven by an internal combustion engine and especially to reduce jerking or bucking. The jerking, caused by rapid changes in engine torque, is damped by adapting the torque of the engine to the increase in output of the drive train of the vehicle. To this end, the deflection of the engine relative to the motor body is detected and used for vaying the fuel quantity metered to the engine. A differentiating member interposed between the engine and the body acts upon the fuel quantity adjusting device of the fuel metering device.

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 fuel-injection pump comprises a pump cylinder, a pump plunger formed with a first relief duct opening into a working space and also opening radially at a first outlet opening into a relief space, and a drive for periodically rotating and axially reciprocating the plunger. An annular slide on the plunger can cover the first outlet opening so that a speed controller can axially shift the slide and thereby vary the venting of the working space into the relief space. An annular groove formed in the cylinder opens inward toward the plunger and a second outlet opening from the first relief duct also opens at the groove. A second relief duct formed in the plunger and opening at a respective second outlet opens at the groove and the second outlet openings are relatively spaced such that during a partial stroke of the pump plunger they communicate with each other via the groove.

Abstract: Fuel injection pump having a pump piston including a working space that is connected via a check valve with a reservoir closed off by a movable wall. A control line leads from this reservoir to a regulating cylinder. An adjustable regulating member is displaceably disposed in this regulating cylinder, permitting adjustment of the fuel quantity control slide according to the position of the regulating member. The subject of the invention achieves a simple construction for a fuel injection pump, for which only a small amount of drive power is required.

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: A fuel injection pump for internal combustion engines having an electromagnetic final control element, which in order to adjust the end or onset of injection engages a control slide, located in the pump interior. Via a control shaft, the final control element chamber is hermetically sealed off from the pump interior in order to keep water contained in the fuel from reaching current-carrying parts of the final control element. As a result, fluid communication exists only via the bearing gap of the slide bearing of the control shaft and the bearing gap functions as a throttle. The throttle forms a water separator, which further reduces the concentration of water in the already small quantity of fuel reaching the final control element chamber through the throttle.

Abstract: In a fuel injection system having a distribution-type fuel injection pump, fuel is supplied successively to cylinders of an engine from a pressurizing chamber of the pump. The pressurizing chamber communicates with a low-pressure chamber through a relief passageway opened and closed by an electromagnetic valve. During a stroke in which volume of the pressurizing chamber is reduced by each forward stroke of a plunger, opening and closing of the valve are controlled, to control starting timing and/or termination timing of fuel injection to the cylinders. A delay occurs in the starting timing and/or the termination timing with respect to drive pulses supplied to the valve, due to an operation delay of the valve. A plurality of memory sections are provided for storing therein delay times for the respective cylinders.

Abstract: A fuel injection pump of the distributor type in which a pump piston is driven to reciprocate and rotate simultaneously, thereby acting as a distributer. For fuel injection quantity regulation, an annular slide that is displaceable on a pump piston is provided, by way of which the pump work chamber can be relieved. To attain a low injection rate in the idling range, in addition to a first outlet opening, controlled by an upper edge of the annular slide, second outlet openings axially offset from the first are provided, for a relief conduit of the pump work chamber which cooperate with a radial control opening, which communicates with the pump suction chamber and is disposed in the wall of the annular slide. In the opening direction of this control opening, a groove provided with a throttle is provided, by way of which during idling operation, prior to the opening of the first relief opening, fuel can flow out of the pump piston in order to decrease the pumping rate of the pump piston.

Abstract: A fuel injection pump of a distributor injection pump type in which a quantity adjusting device is an annular slide that is axially displaceable on a fuel injection quantity regulator and which can additionally be rotated by a torque device. With the aid of this torque device, the control effectiveness of a second control edge, for instance in the form of a rectangular groove is controlled. The torque device is equipped with a clutch, which is embodied either via a spring or via a cam race. The torque device is actuated via an adjusting lever connected to the annular slide adjusting lever that serves to arbitrarily vary the fuel injection quantity at the direction of the driver of the motor vehicle.

Abstract: A fuel injection pump for internal combustion engines, in particular having a plurality of linearly aligned pump elements, the pump injection onset is determined by one control slide per pump element in which the control slide is axially displaceable on the pump plunger and by a control of relief conduits of the pump work chambers. The control slide is actuated via a torque shaft in that a respective adjusting bolt of a straddling element joined to the torque shaft engages a cross groove of the control slide. The adjusting bolt has a cylindrical stud portion and a slide shoe supported thereon, and the slide shoe is secured against axial displacement by means of a head of the adjusting bolt.

Abstract: A fuel injection pump for internal combustion engines, having a plurality of in-line pump elements in which the supply onset is effected by means of control slides, one of which is axially displaceable on each of the pump pistons and by controlling relief conduits of the pump work chambers. The control slides are actuated via a torque shaft in that via driver tangs which are secured to the torque shaft by fastening parts screwed to the torque shaft, the control slides are axially displaced upon rotation of the torque shaft. For adjusting the stroke or axial position of the individual control slides to one another, spacer means, in particular shims are provided between the fastening part and the torque shaft in the stroke direction of the control slides.

Abstract: A fuel injection pump of the distributor pump type having a pump piston driven for simultaneous reciprocation and rotation, the supply quantity of which that is effective for injection is controlled by the opening of a relief conduit of the pump work chamber in that with the aid of a mechanical regulator an annular slide is moved into variable stroke positions on the pump piston. Additionally, for an electronic regulation of the total injection quantity, a pre-stroke (hv) is provided, which is determined by a first valve and which, under the control of a second, electrically controlled valve connected to the output side of the first valve, is added to the basic supply stroke in a variably effective manner in terms of injection. Thus the fuel injection quantity can be regulated within the context of the fuel injection quantity difference resulting from the pre-stroke.

Abstract: A fuel injection pump for internal combustion engines having at least one pump element comprising a housing, a cylinder liner in the housing, a pump piston operative in the cylinder liner, a recess in the cylinder liner having a radial entrance, for a control slide which controls injection onset during axial displacement on the pump piston. In the vicinity of the entrance to the recess which discharges into the pump work chamber, an apron is disposed on the control slide or on the cylinder liner, in order to cover a portion of a radial three-dimensional gap present between the control slide and the cylinder liner. By this means, the diverted fuel stream that is reflected by the side walls can be interrupted and reflected at least one additional time, so as thereby to reduce its kinetic energy.

Abstract: A fuel injection device for an internal combustion engine has a fuel pressurization chamber and a fuel chamber which are coupled to each other by a solenoid valve. The timing of fuel injection and the amount of fuel to be injected are controlled by selectively opening and closing the solenoid valve. Valve opening delay times of the solenoid valve are measured, and averaged when the rotational speed of the engine is in a prescribed speed range. The mean value of the valve opening delay times is used as a valve opening delay time for increasing or reducing the duration of a drive pulse for opening and closing the solenoid valve.

Abstract: First and second cam members are engageable in a fuel injection pump. A first device urges the first cam member toward the second cam member to obtain engagement between them. The first cam member reciprocates as it moves relative to the second cam member when the first and second cam members are in engagement. A plunger connected to the first cam member reciprocates with the first cam member. The plunger defines at least part of a pumping chamber which contracts and expands as the plunger reciprocates. As the pumping chamber expands in a fuel intake stroke, fuel moves into the pumping chamber. As the pumping chamber contracts in a fuel compression stroke, the fuel moves out of the pumping chamber. A second device resists movement of the plunger in the fuel compression stroke.

Abstract: An internal combustion engine is provided with a fuel injection valve. The fuel injection valve is actuated so that fuel injected therefrom reaches the combustion chamber in the latter half of the intake stroke, thereby accomplishing stratified charge. The timing at which blow-back of intake gas occurs is detected and the timing for terminating fuel injection is advanced as the timing at which blow-back of intake gas occurs becomes earlier.

Abstract: A fuel injection pump is proposed for internal combustion engines having a pump piston having a blind bore and two control bores and in which the fuel quantity to be supplied is controlled by means of a control slide having oblique control edges. At least two control edges are provided in a window-like recess of the control slide, of which the lower edge in each case and possibly the upper one as well extend obliquely; the upper control edge provided in the recess determines the supply onset, in cooperation with the first control bore, and the lower control edge of the recess determines the end of supply, in cooperation with the second control bore.