A method for providing an active engine stop of the engine of a hybrid electric vehicle. The method utilizes the electric machine to oppose and rapidly stop the rotation of the engine at a controlled rate. The method includes the calculation of an input speed reduction trajectory using the engine speed...http://www.google.com.au/patents/US7217221?utm_source=gb-gplus-sharePatent US7217221 - Method for active engine stop of a hybrid electric vehicle
