Robert Boschgmbh

Wilfried Bohringer

Franz Eheim

Helmut Laufer

Gerald Hofer

Karl Konrath

Franz J Eheim, Deceased

Wolfgang Fehlmann

Karl Zibold

A fuel injection pump which has a shutoff device for the fuel supply to the pump work chamber, comprising a magnetic valve, which controls an intake bore to the work chamber of the fuel injection pump. The fuel injection pump further has a relief conduit, which is connected by an annular slide on the pump piston with the suction chamber in order to terminate the effective supply stroke of the pump piston. In order to assure reliable shutoff of the fuel supply to the pump work chamber, a check valve is further disposed in the connection between the pump work chamber and the suction chamber, which check valve is closed, during the intake stroke of the pump piston, with the collaboration of the pressure drop from the suction chamber to the pump work chamber.

Fuel injection pump for internal combustion engines

A fuel injection pump for internal combustion engines has at least one pump working chamber which is defined on one side by the end face of the pump piston and the wall of the cylinder, and on the other side by a screw closure, the screw closure comprising a stopper containing a plug. The stopper can be tightened onto the cylinder by a sealing sleeve, and the stopper preferably comprises an outer threaded ring and an internal threaded sleeve soldered into the latter.

Fuel injection pump

In a pressure valve inserted in a fuel supply conduit between a fuel injection pump and an injection vavle of the internal combustion chamber and comprising a valve member and a locking member cooperating with the valve member and opening in the direction of the fuel supply, and a back-pressure relief valve including a closing element which closes an axial bore of the locking member, a throttle orifice is provided in the connection between the axial bore of the locking member and an axial recess formed in the connection element connected to the fuel supply conduit leading to the internal combustion engine so that no after-injections occur, and a sufficiently great stable pressure is maintained in the fuel supply system.

Pressure valve assembly for fuel injection pumps

A fuel injection apparatus for supplying fuel to an internal combustion engine is proposed. The fuel injection apparatus includes a pump work chamber enclosed within a pump housing, which work chamber is defined at one end by an axially displaceable and rotatable pump piston. The pump work chamber can be made to communicate, during the intake stroke of the pump piston, with a fuel inlet conduit via an electromagnetically actuatable metering valve and a check valve. The metering valve and check valve are combined into a common valve housing and are disposed in the immediate vicinity of the pump work chamber.

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Flein, Germany

Wilfried Bohringer