Dual power input fluid pump
AssigneeMAGNA Powertrain AG & Co KG
InventorsJaroslaw Lutoslawski, Richard Muizelaar, Andrew Kowalski
Life of this patent
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Abstract
A fluid pumping system for a vehicle having an internal combustion engine includes a housing, an electric motor, a controller to control the speed of the electric motor, a planetary gearset including a first member adapted to be driven by the internal combustion engine, a second member driven by the electric motor and a third member. A pump is driven by the third member of the planetary gearset. The housing contains the electric motor, the pump and the controller.
Claims21
A fluid pumping system for a vehicle having an internal combustion engine, the pumping system comprising:
- a housing;
- an electric motor;
- a controller to control the speed of the electric motor;
- a planetary gearset including a first member adapted to be driven by the internal combustion engine, a second member driven by the electric motor and a third member;
- and
- a pump driven by the third member of the planetary gearset, wherein the housing contains the electric motor, the pump and the controller.
A fluid pumping system for a vehicle having an internal combustion engine, the fluid pumping system comprising:
- an electric motor;
- a planetary gearset including a first member adapted to be driven by the internal combustion engine, a second member driven by the electric motor and a third member;
- a pump driven by the third member of the planetary gearset;
- and
- a controller operable to electrically interconnect fields of the electric motor to provide an electrical brake and selectively restrict rotation of the second member to change the gear ratio provided by the planetary gearset.
A method of pumping fluid within a vehicle including an internal combustion engine, the method comprising:
- drivingly interconnecting a first member of a planetary gearset to an output of the internal combustion engine;
- drivingly coupling an electric motor to a second member of a planetary gearset;
- drivingly connecting a third member of a planetary gearset to an input of a pump;
- determining a fluid demand;
- determining a target electric motor speed at which to rotate the second member to provide the fluid demand from the pump;
- and
- controlling the electric motor to rotate at the target speed.
Dependencies are inferred from the claim text.