×

System and method for controlling travel of hybrid electric vehicle in an emergency

  • US 8,504,231 B2
  • Filed: 11/16/2011
  • Issued: 08/06/2013
  • Est. Priority Date: 05/24/2011
  • Status: Active Grant
First Claim
Patent Images

1. A method of controlling travel of a hybrid electric vehicle in an emergency, comprising:

  • determining, by a controller, whether an abnormality has occurred in a low voltage Direct Current-to-Direct Current (DC-DC) converter;

    in response to determining that an abnormality has occurred in the low voltage DC-DC converter, determining, by the controller, whether voltage of a low voltage battery has deviated from an operational voltage range of a braking device;

    in response to determining that the voltage of the low voltage battery has deviated from the operational voltage range of the braking device, setting, by the controller, a restricted vehicle speed which takes into account mechanical braking power; and

    setting a maximum torque used to restrict a torque of a driving motor based on the set restricted vehicle speed.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×