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Control strategy for DC emergency direct current motor for an emergency hydraulic pump

  • US 7,641,018 B2
  • Filed: 08/13/2007
  • Issued: 01/05/2010
  • Est. Priority Date: 08/13/2007
  • Status: Active Grant
First Claim
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1. A hybrid vehicle comprising:

  • a power takeoff operation application;

    a traction motor/generator;

    a primary pump for supplying pressurized fluid to the power takeoff operation application, the traction motor/generator being connectable to the primary pump for operating the primary pump;

    an auxiliary pump for supplying pressurized fluid to the power takeoff operation application;

    an auxiliary motor connected to the auxiliary pump for operating the auxiliary pump;

    a first electrical power source for supplying electrical power to the traction motor/generator;

    a second electrical power source for supplying electrical power to the auxiliary motor; and

    a programmable control system for coordinating energization of the traction motor/generator and auxiliary motor in response to an operator request for operation of the power takeoff operation application.

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