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Process for Operating a Hybrid Vehicle

  • US 20110160946A1
  • Filed: 03/08/2011
  • Published: 06/30/2011
  • Est. Priority Date: 11/12/2008
  • Status: Active Grant
First Claim
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1. A process for operating a hybrid vehicle operable in an internal combustion engine driven mode, an electric motor driven mode, and a hybrid internal combustion engine and electric motor driven mode, the process comprising the acts of:

  • beginning with an instantaneous position of the hybrid vehicle, examining an upcoming route section to be traveled, which route section is considered for driving in only the electric motor driven mode;

    when a route section for driving in the electric motor driven mode is recognized, adapting a threshold value used to change the operation of the hybrid vehicle into the electric motor driven mode, which threshold value represents an efficiency advantage achievable on the route section by changing from the internal-combustion engine driven mode to the electric motor driven mode, said adapting of the threshold value occurring if a drive through the route section in the electric driving mode would likely lead to a lowering of a charge state of an electric energy accumulator of the hybrid vehicle into a critical charge state range.

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