Process for Operating a Hybrid Vehicle
First Claim
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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Accused Products
Abstract
A process for operating a hybrid vehicle in an internal-combustion-engine-driven mode and/or in an electric-motor-driven mode, wherein, on a route section to be traveled and considered for driving in the electric-motor-driven mode, a change to the electric-motor-driven mode will take place only when a threshold value is exceeded which represents, or correlates with the efficiency advantage achievable on the route section by a change from the internal-combustion-engine-driven mode to the electric-motor-driven mode. Starting from the instantaneous position of the hybrid vehicle, the route is examined in an anticipatory manner with respect to such a route section, wherein the threshold value is adapted when such a route section was recognized and a driving through the route section in the electric driving mode would likely lead to a lowering of the state of charge of an electric energy accumulator into a critical state of charge range.
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Citations
13 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification