Abstract: An injector, in particular for injecting fuel directly into a combustion chamber of an internal combustion engine, having a fuel flow path from a fuel intake to a spray orifice, a plurality of fuel channels being arranged in the flow path in front of the spray orifice, their cross section, given a certain fuel pressure, determining each quantity of fuel spray-discharged per unit of time. To influence the fuel distribution in a spray-discharged fuel cloud and, in particular, to attain a selected strand-like quality of the fuel cloud, provision is made that at least one part of the fuel channels is aligned such that the fuel jets issuing from them are spray-discharged directly through the spray orifice when the valve is open.

Abstract: A piston pump for pumping fuel in which a risk of fuel getting into the area of a shaft seal is limited. The fuel pump includes a separation chamber which is provided between a shaft seal and a fuel chamber that contains fuel. Located in the separation chamber is for instance air as a separator means, and the separation chamber communicates with an air inlet of the engine. This assures that fuel cannot get into the area of the shaft seal or escape to the outside. The fuel pump is suitable in particular for internal combustion engines in which the fuel must be delivered at high pressure.

Abstract: A fuel supply systems with two series-connected pumps and with fuel injection valves that inject fuel directly into a combustion chamber of an engine in which a starting process takes less time because of the small feed quantity of the second fuel pump. The system includes a valve device which assures that during the starting process the first fuel pump furnishes the fuel to the fuel valves at elevated feed pressure. In many cases, this elevated feed pressure suffices to start the engine in the quickest possible time. The apparatus and the method are intended for an internal combustion engine of a vehicle.

Abstract: The present invention relates to an injection valve, in particular to the injection valve for a direct injection of fuel into a combustion chamber of an internal combustion engine. The injection valve includes a valve body mounted in a housing, the valve body having a valve opening surrounded by a valve seat. A valve needle is provided with a closing head extending through the valve opening so that the closing head cooperates with the valve seat to snugly fit into valve seat on the injection discharge side. The valve needle is prestressed by a closing spring into a closing position and moved by an actuating mechanism through an actuating element against the force of the closing spring into an open position. To allow the injection valve to open quickly, the actuating element is closely engaged with the valve needle using a spring acting in the direction of the open position.

Abstract: An injection device for a combined injection of a fuel and a supplementary liquid, into the combustion chamber of an internal combustion engine. In this device, the fuel is injected by means of an injection valve controlled by an electromagnetic valve, and the injection valve additionally has a connection to a supplementary liquid pressure source that is provided with an intermittent-supply piston driven by a controlled pressure medium. For the pressure medium, pressure is drawn from a pressure reservoir; the pressure is supplied by a high-pressure feed pump provided for creating high pressure for fuel to be injected.

Abstract: In a process and device for controlling an internal combustion engine, a fuel pump delivers fuel from a low-pressure area to a high-pressure area. The fuel can be delivered by activating injectors of the combustion chambers of the internal combustion engine. The pressure of the fuel in the high-pressure area is regulated to a predefinable value using a regulating means. The regulating means is activated immediately prior to and/or during the time when the injectors are activated to increase the pressure.

Abstract: A fuel pump for a two-stroke internal combustion engines, having a pump chamber with an inlet valve for connecting to a fuel delivery pump. An outlet valve for connecting to an injection nozzle of the engine, and an axially driven pump piston which defines the pump chamber. For the purposes of a simple structural embodiment for reasonably priced manufacture and flexible fuel metering, a stop is provided, which defines the intake stroke of the pump piston and whose relative position to the bottom dead center of the pump piston can be controlled as a function of operating parameters of the engine.

Abstract: A method and apparatus for starting an internal combustion engine, which comprises setting one piston of the internal combustion engine into a favorable starting position (X) and to supply a fuel/air mixture to the combustion space by means of a starting air source before the starting of the internal combustion engine.

Abstract: An engine injection system for a combined injection of fuel and an auxiliary fluid into a combustion chamber of an internal combustion engine. A fuel injection pump is used for pumping both fuel and the auxiliary fluid at high pressure. The pump communicates with an injection nozzle and, via a magnet valve assembly, with a fluid metering device, which in turn communicates via a metering line with the injection nozzle. Connecting the magnet valve assembly directly to the supply outlet of the fuel injection pump upstream of an equal-pressure valve, and providing a pressure generator in the metering device, given a suitable triggering of the magnet valve assembly, the remaining supply stroke of the pump piston of the fuel injection pump after the end of the fuel injection by the injection nozzle is utilized to generate the requisite metering pressure in the metering device to enable the auxiliary fluid that is to be metered to be stored in the injection nozzle.

Abstract: An arrangement for the treatment of exhaust gases from a compression-ignition internal combustion engine, in which, fuel is metered via a metering valve and introduced into the exhaust system via an evaporator to promote the action of a reduction catalyst arranged on the downstream side of the engine.

Abstract: A piston pump which is contemplated for furnishing fuel at high pressure, especially gasoline with low self-lubricating properties. To avoid drive-side wear, a rotatably drive eccentric element is provided as the actuating device for the pump piston of the piston pump, the driving motion of the eccentric element being transmitted to the pump piston via a flexible transmission element.

Abstract: The electrohydraulic adjusting device for actuating a device for adjusting at least one camshaft of an internal combustion engine relative to its crankshaft has two differential pistons each of which serves to adjust a camshaft (intake camshaft or exhaust camshaft). Each of the two differential pistons have a small effective piston surface which is acted upon with pressure by a pump. An independent pressure control valve is associated with each of the pressure chambers on a larger effective piston surface, via which valve, the pressure in this pressure chamber can be controlled independently of the other differential piston.

Abstract: A fuel injection apparatus of the invention for a two-stroke engine including a fuel injection with an adjusting device, which via a pulsating pressure line is supplied with the pulsating internal pressure and inner chamber of a crankcase of the two-stroke engine, so as to meter the supply quantity of the fuel injection pump as a function of the internal pressure in such a way that exhaust emissions and fuel consumption of the two-stroke engine are reduced by means of a supply quantity optimally adapted to the combustion. The fuel injection apparatus according to the invention is intended for use in two-stroke engines.

Abstract: The hydraulic setting device (10) has a differential cylinder (11) whose pressure spaces (14, 18) can each be acted upon by a pump (17). The pressure conduits (15) and (19) between the pump and the two pressure spaces (14) and (18) are connected to a control valve (31) by means of control conduits (29) and (33). A part pressure can be set in the pressure spaces (14) and (18) by spilling pressure medium by corresponding activation of the control valve.

Abstract: The hydraulic setting device has a differential cylinder (11) whose annular space (14) is continually subjected to pressure by a pump (16). The pressure space (18) at the large piston surface is connected to the pump via a connection conduit (41). A conduit branch, which leads to a control valve (21), emerges from this connection conduit (41). At the other end, this control valve is in connection with a return conduit (26). The pressure in the conduit branch (19), and therefore in the pressure spaces (14, 18) of the differential cylinder, can be varied by appropriate activation of the control valve.

Abstract: A magnetic valve for controlling a flow opening of a connection line for guiding fluid, particularly fuel,valve has a valve housing having a guide bore hole, a valve member displaceably supported in the guide bore hole and bringable into contact with a valve seat encircling the flow opening under the action of a closing force and also liftable from the valve seat under the action of an opening force, a coupling member transferring the closing force to the valve member. The coupling member is guided in the guide bore hole and has a damping collar with an end face which faces in direction of the valve seat and is bringable into contact with a contact surface provided in the valve housing and extending substantially parallel to the end face of the damping collar.

Abstract: A device for adjusting a rotational angle relationship between a camshaft and its drive element, comprising two circular segment shells provided on the drive element together with an interposed part forming two working spaces therebetween. The both shells are connected to one of the camshaft and the drive element, and the interposed part being connected to the other of the cam shaft and the drive element while the circular segment shells being movable relative to the interposed part in a setting action such that during adjustment in the setting direction the circular segment shells are adjusted so that the volume enclosed in a first one of the working spaces increases while the volume enclosed in a second one of the working spaces decreases. Each of said working spaces are connected to a first setting pressure medium source separately via a non-return valve which opens toward a respective one of the working spaces, and the working spaces can be directly connected to one another by means of a control valve.

Abstract: Fuel injection device for spark-ignition internal combustion engines having a pump and a distributor with a reversing valve, which distributor is preferably driven at pump speed and has a stationary and a rotating part. The reversing valve is arranged inside the rotating part of the distributor, preferably concentrically, and its inlet opening is connected with the pump work space via a line which likewise extends exclusively inside the rotating part of the distributor.

Abstract: A hydraulic valve control apparatus in an embodiment for multi-cylinder internal combustion engine having a reservoir chamber, assigned to a pressure chamber of a valve tappet and having a reservoir piston that serves as a valve, with which the reservoir chamber can be separated from the pressure chamber. The reservoir piston is shifted out of its position of repose to a reservoir function by a hydraulic thrust that is conducted in the reservoir chamber under the control of a magnet valve, via a control line in which a check valve is disposed. Displacement of the reservoir piston occurs only whenever a valve actuation takes place via the drive cam and as a result the working pressure adequate for the displacement of the reservoir piston prevails in the pressure chamber.

Abstract: A fuel-injection pump, especially a direct fuel injection in spark-ignition internal-combustion engines, with at least one pump for generating a fuel flow under pressure and with a rotary slide valve moved synchronously with the drive shaft of the internal-combustion engine and intended for assigning the fuel flow to at least one injection port of the internal-combustion engine and/or for branching off the fuel flow under pump pressure into a return line, the rotary slide valve is mounted so as to be displaceable to a limited extent in the direction of its axis of rotation and/or so as to be rotatable to a limited extent in relation to the rotary drive of the rotary slide valve.