Radial piston pump
AssigneeAlfred Teves GmbH
InventorLudwig Budecker
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Abstract
An electric motor driven radial piston pump for a motor vehicle brake system with slip control is disclosed wherein the radial piston pump includes two parallel working circuits drivable by the drive motor. The working pressure of the first working circuit is limited to a preset value. Above the preset value only the second working circuit is effective.
Claims7
A combination radial piston pump and electric drive motor, said piston pump having an inlet and an outlet, first and second parallel working circuits between said inlet and said outlet, said first working circuit having a first pumping means coupled to said drive motor for delivering fluid at a first delivery rate from said inlet to said outlet, said second working circuit having a second pumping means coupled to said drive motor for delivering fluid at a second delivery rate from said inlet to said outlet, each of said pumping means having a suction side communicating with said inlet and a pressure side communicating with said outlet, and a throttle channel between the suction and pressure sides of said first pumping means for diverting flow from the pressure side to the suction side of said first pumping means in dependence on the pressure at said outlet and for diverting all such flow at a present pressure at said outlet.
Dependencies are inferred from the claim text.