Magna Powertrain Inc

Magna Powertrain Bad Homburg Gmbh

Hans Jürgen Lauth

David R Shulver

Cezar Tanasuca

Viktor Refenius

Bernd Gebhard

Doan Van Nguyen

Bernd Schneider

A variable capacity pump includes a control ring moveable within a pump chamber to alter the volumetric capacity of the pump. First and second control chambers individually receive pressurized fluid to create forces to bias the control ring in a predetermined direction. A return spring urges the control ring toward a maximum volumetric capacity pump position. The control ring connects and disconnects the second control chamber from a source of pressurized fluid based on a position of the control ring. Forces from the control chambers and the spring act in combination with one another or against one another and against the spring force to establish first and second equilibrium pressures based on a pressurized or vented condition of the second control chamber.

Variable pressure pump with hydraulic passage

Growing community of inventors

Neu-Anspach, Germany

Hans Jürgen Lauth