Patent ID: 6512967
Filing Date: 2003-01-28
Classification: B60K,B60L,B60W,F02D,F02N,Y02T

Abstract:
A method for potentiating the utilizable torque output capacity of a hybrid electric vehicle, the method comprising the steps of:controlling operation of an engine of a hybrid electric vehicle using a generator, the engine and generator being interconnected through a planetary gear system, the generator having substantially equal torque output capacity as the engine based on connective gear ratio selection; utilizing an engine controller for managing the engine's operation thereby permitting the engine to be operated at a torque output level substantially equal to the maximum torque output of the generator over the engine; detecting an overpower condition wherein the torque output of the engine is surpassing the maximum torque output of the generator; controlling the engine to a torque output less than the maximum torque output of the generator; rechecking for a continuation of the engine overpower condition; and shutting the engine down when a continuing overpower condition is detected.