Robert Boschgmbh

Wolfgang Haydn

Johann Warga

Uwe Kuhn

Manfred Bacher-Hoechst

Dieter Eppinger

Andreas Scheffold

Dieter Ulrich

A method and control unit for determining the failure probability of a component of a motor-vehicle. Data in the form of damage-relevant influence parameters, which affect the failure probability of the component, are measured and stored during the operation of the component. To ascertain the failure probability, a collective loading is calculated as a determining influence parameter for establishing the fatigue limit of the component. To determine the collective loading as realistically as possible and therefore determine the failure probability as accurately as possible, the influence parameters may be evaluated during the operation of the component, in a control unit of the motor-vehicle for determining the failure probability.

Method and control unit for determining the probability of failure of a motor-vehicle component

A pressure valve to be secured into a supply line between a pump work chamber of a fuel injection pump and a injection location of an internal combustion engine to be supplied with fuel. A pressure valve closing element provided with a sealing face is pressed by a compression spring onto a valve body provided with a valve seat. To reduce pressure waves in the supply line caused by a sudden closing of the pressure valve, a check valve that opens in the direction of the pump work chamber, and that comprises a valve seat, a valve closing element, a spring plate and a restoring spring is disposed in a through conduit of the pressure valve closing element, which is preceded by a throttle restriction. Throttling of the fuel flowing downstream of the check valve is avoided by disposing a through conduit in the spring plate. A filler piece inserted into the through conduit and defining the opening stroke of the check valve, also has a longitudinal bore that opens into a transverse bore for an unthrottled fuel flow.

Pressure valve

Growing community of inventors

Leonberg, Germany

Wolfgang Haydn