Method and system for providing brake boosting in a hybrid motor vehicle
AssigneeFord Global Technologies, LLC
InventorsDale Crombez, Daniel Gabor, Peter Worrel, William David Treharne
Life of this patent
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Abstract
A method for providing brake boosting in a hybrid motor vehicle having a brake boosting system powered by an internal combustion engine and by an auxiliary brake boosting device includes monitoring the output of an auxiliary brake boosting device not driven by the engine, and in the event that the auxiliary brake boosting device is not operating properly, starting the internal combustion engine associated with the vehicle to provide a desired level of brake boost.
Claims20
A method for providing brake boosting in a hybrid motor vehicle having a brake boosting system powered by a boost generator driven by an internal combustion engine and by an auxiliary brake boosting device, said method comprising:
- monitoring the value of at least one operating parameter indicative of the capability of said auxiliary brake boosting device to provide output;
- comparing the value of said monitored operating parameter with a predetermined range for said value;
- and
- in the event that the value of said monitored operating parameter lies outside said predetermined range, running said internal combustion engine to provide a desired level of brake boost capability.
A brake system for a hybrid motor vehicle, comprising:
- a brake boosting system powered primarily by an internal combustion engine;
- an auxiliary brake boosting device;
- and
- a system controller for monitoring the value of at least one operating parameter indicative of the output of said auxiliary brake boosting device, with said system controller comparing the value of said monitored operating parameter with a predetermined range for said value, and in the event that the value of said monitored operating parameter lies outside said predetermined range, running said internal combustion engine to provide a desired level of brake boost.
Dependencies are inferred from the claim text.