A parallel hybrid electric vehicle powertrain and control method wherein an internal combustion engine and an electric motor system define a split power operating mode, a generator drive mode and a parallel power mode. Provision is made, when the motor is inoperable, for preventing discharge of a battery...http://www.google.fr/patents/US7398845?utm_source=gb-gplus-shareBrevet US7398845 - Controller and control method for a hybrid electric vehicle powertrain
Controller and control method for a hybrid electric vehicle powertrain
