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Method for reducing peak phase current and decreasing staring time for an internal combustion engine having an induction machine

United States Patent

January 1, 2002
View the Complete Patent at the US Patent & Trademark Office
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A method for reducing the starting time and reducing the peak phase currents for an internal combustion engine that is started using an induction machine starter/alternator. The starting time is reduced by pre-fluxing the induction machine and the peak phase currents are reduced by reducing the flux current command after a predetermined period of time has elapsed and concurrent to the application of the torque current command. The method of the present invention also provides a strategy for anticipating the start command for an internal combustion engine and determines a start strategy based on the start command and the operating state of the internal combustion engine.
Amey; David L. (Birmingham, MI), Degner; Michael W. (Farmington Hills, MI)
Ford Global Technologies, Inc. (Dearborn, MI)
09/ 567,246
May 9, 2000
This invention was made with Government support under Prime Contract No. DE-AC36-83CH10093, Subcontract No. ZCB-4-13032-02, awarded by the Department of Energy. The Government has certain rights in the invention.