Abstract: A fuel injection arrangement for internal combustion engines, having an injection unit embodied as an open nozzle, in which a pump piston embodied as a stepped piston defines two work chambers in a cylinder bore is proposed, by which work chambers a pump work chamber, defined by an annular end face in the pump piston portion of smaller diameter, can be made to communicate with a fuel supply line and an injection port into the combustion chamber of the engine to be supplied. The other work chamber, at least indirectly defined by the larger face end of the pump piston, can be made to communicate according to the invention with a pressure reservoir chamber or a relief line via a pressure line that includes a 3/2-way valve; the supply stroke motion of the pump piston is brought about by the delivery into the work chamber of the fluid under high pressure located in the pressure reservoir chamber.

Abstract: A method and apparatus for controlling the flow of fuel for a gasoline or diesel gasoline engine controls a solenoid valve for actuating the fuel pump. A pump piston is driven by the camshaft and, in turn, pressurizes the fuel for delivery to the individual cylinders. Based on the operation of the solenoid valve, the beginning of the injection of fuel and the end of the injection of fuel are established Based upon spaced angular markings on the camshaft, a control unit determines the trigger signals for actuating the solenoid valve. To calculate the trigger signals, the markings on the camshaft are counted and interpolated therebetween over time. The interpolation is based on the instantaneous rotational speed N of the camshaft, which is sensed immediately before performing the interpolation.

Abstract: A fuel injection pump for internal combustion engines has an adjusting piston for adjusting an injection instant, is acted upon by a return force and delimits a working space, a control slide delimiting a pressure space in the adjusting piston and displaceable in the adjusting piston counter to a return force by a pressure-source supply pressure in the pressure space and controlled as a function of speed of the engine so that the working space can be connected to a pressure source or to a relief space, and so the supply pressure in the pressure space is additionally controlled as a function of further operating parameters of the engine. A feed pump delivering at a rate proportional to speed has a delivery side connected to the pressure space, a pressure line, containing a restriction, directly connects the delivery side of the feed pump to the pressure space so that the pressure is directly connected with the feed pump exclusively by the pressure line and is not connected with the inlet chamber.

Abstract: A process for controlling and measuring the movement of an armature of an electromagnetic switching member with an excitation coil is proposed, which has the following steps: a current (i) or a voltage (u1) is applied to the excitation winding (3) in order to move the armature into a first actuatable position; before the start of the movement of the armature, the current or the voltage is raised above a value at which the armature remains in the actuated position, and before termination of the movement of the armature the current or the voltage is reduced to a defined value, which suffices to hold the armature in the actuated position; finally, the temporal variations in the current or the voltage are measured after setting of the defined value, for the purpose of recognizing the termination of the armature movement.

Abstract: The invention relates to a method and arrangement for preparing a fuel-metering signal M for a diesel engine starting with measured variables such as accelerator pedal position, rotational speed, lambda, exhaust gas temperature or torque. A fuel quantity request MW is pregiven in dependence upon the position of the accelerator pedal. This quantity request MW is supplied to a minimum selector together with a second signal. The output signal M of the minimum selector, in turn, determines the metered fuel. The second signal derives from a precontrol characteristic field 50 in dependence upon the speed. The output signal of the precontrol characteristic field MV is influenced by the controller output signal MR in specific operating conditions.

Abstract: The invention is directed to a method and arrangement for controlling a self-igniting internal combustion engine. The arrangement includes at least one measured-value sensor, electronic control unit for forming a quantity signal for metering fuel, and a control unit for driving individual actuators for each cylinder. The actuators determine the quantity of fuel injected by the pump elements into the cylinders. Under specific conditions, a corrective unit is activated which determines corrective values specific to the cylinders for making the cylinders equal. The open-loop control unit applies the metering signal to the actuators in dependence upon the quantity signal and the corrective values.

Abstract: The invention is directed to a method and an arrangement for controlling the fuel injection in a high-pressure fuel pump. Magnetic valves determine the fuel quantity to be injected into the engine. The magnetic valve is controlled during the pumping phase of the pumping element in such a manner that first a preinjection and then a main injection is carried out. In specific operating conditions, the control apparatus determines the duration of the drive pulses for the magnetic valve at which a preinjection just takes place. With the duration of the drive pulses as a basis, the control apparatus forms compensating signals for the drive pulses which effect preinjection and stores the same.

Abstract: The invention relates to a method and arrangement for controlling the fuel metered to an engine and especially to a diesel engine. The engine includes a fuel pump drive by a shaft for which injection start and injection end is fixed by a corresponding control of the electromagnetically actuated valve. The drive pulses for pump-delivery start and pump-delivery end are generated in dependence upon the analog signal of an angle sensor.

Abstract: A fuel injection pump is proposed in which over a first portion of the supply stroke of the pump piston fuel for the main injection is pumped via a distributor line and a distributor groove into one at a time of a plurality of fuel injection lines. In a second, remaining portion of the pump piston supply stroke, on the same cam flank, fuel is then pre-stored in a reservoir, controlled by a first electrically controlled valve and a second electrically controlled valve and by one of a plurality of longitudinal control grooves, which fuel subsequently, before the beginning of the next main injection determined by the closure of the first electrically controlled valve, is pumped via a second distributor line into the next succeeding injection line.

Abstract: A device for actuating valves in an internal combustion engine comprise four valves (9, 10, 11, 12) inclined in a V configuration and a central spark plug (3) per cylinder (6), each cylinder (6) being associated with two pairs of valves (9, 10; 11, 12) inclined on each side of an axial plane (PP) of the cylinder (6), while a spark plug pit (4) is provided between the two valves (9, 10) of one of the pairs, roughly parallel to the latter, this device comprising a central camshaft (13) located in the vicinity of the axial plane (PP) and, for each cylinder (6), at least two rockers (14, 15). There is interposed between each rocker (14, 15) and the camshaft (13) a pushrod (21) parallel to the cylinder (6), and, for each cylinder, the pin (18) of the rocker(s) disposed on the same side as the pit (4) is carried, as the other pin (19), by two bearings (26) located on each side of the rockers (14, 15) and is disposed between the pit (4) and the axial plane (PP).