Luk Automobiltechnik Gmbh & Co. Kg

Toyota Jidosha Kabushiki Kaisha

Christoph Heidemeyer

Hiroyuki Ikemoto

Ulrich Hiltemann

Junichi Tanoue

Kohei Ono

A pump, in particular a vacuum pump for motor vehicles, wherein a rotor with at least one vane is mounted inside a pump housing, the rotor being rotatably driven by the combustion engine of the motor vehicle via a coupling device. An intermediate element is arranged between the rotor and the coupling device so as to captively retain the rotor and coupling device and protect them against wear.

Pump having an intermediate element with a pivot bearing within a rotor for connecting the rotor with a coupling device

A gas vane pump wherein a lubricant is intermittently introduced into a housing during rotation of a rotor, through a supply passage formed through the housing and the rotor, and the relative position between the rotor having a diametric hole and the housing having a communication groove is determined such that when the rotor is at an angular position in the middle of a predetermined angular range relative to the housing and the hole is in communication with the groove, a point of contact between a vane movably held by the rotor and the inner circumferential surface of the housing is located at the lowest position of the inner circumferential surface. When the rotor is stopped within the predetermined angular range, the vane divides the remaining lubricant into two portions, which are discharged at different times, making it possible to reduce the load on the vane upon restarting the pump.

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Remscheid, Germany

Christoph Heidemeyer