Robert Boschgmbh

Helmut Haberer

Friedrich Boecking

Carlos Alvarez-Avila

Claus Maier

Helmut Simon

A pump having least one pump element with a pump piston guided in a sealed fashion in a cylinder bore () of a housing part delimiting a pump working chamber in the cylinder bore, and driven into a stroke motion. The working chamber is connected to an inlet conduit through by an inlet valve opening into the pump working chamber and to an outlet conduit through an outlet valve opening out from the working chamber. The inlet valve has a valve element acted on in a closing direction by a valve spring. The inlet conduit includes a first blind bore which adjoins the pump working chamber and has a smaller diameter than the cylinder bore a valve seat is formed at the transition from the cylinder bore to the first blind bore, and a second blind bore, as another part of the inlet conduit, feeds into the first blind bore.

Pump, especially for a fuel injection device for an internal combustion engine

A fuel delivery unit for an internal combustion engine including a housing, which includes a timing unit for shifting the point of injection of fuel into the combustion chambers of the internal combustion engine. An injection timing piston is accommodated in the timing unit, which is displaceably mounted in the timing unit and which encloses a trailing piston displaceably relative thereto. The timing unit contains a pressure chamber which may be pressurized/depressurized via an actuator, a cold start accelerator piston being movable via the pressure chamber, acting upon both the trailing piston via a spring element and, together with a spring-sleeve combination, influencing the injection timing piston.

Injection pump having cold start acceleration for direct injection internal combustion engines

Protective device against unauthorized access

Security device that prevents unauthorized access to a fuel supply device

Growing community of inventors

Gerlingen-Gehenbuehl, Germany

Helmut Haberer