Patent ID: 7377876
Filing Date: 2008-05-27
Classification: B60K,B60L,B60W,B60Y,F16H,Y02T,Y10S,Y10T

Abstract:
1. A split series-parallel hybrid dual-power drive system operable alternatively as a series power drive system or a parallel power drive system, comprising: a first drive system for driving a first load, the first drive system including an engine and a first dynamo-electric unit, the engine having a rotary part coupled to the first dynamo-electric unit directly or through a first transmission unit and coupled to the first load directly or through a second transmission unit; a second drive system for driving a second load; the second drive system including a second dynamo-electric unit, the second load being couple to the second dynamo-electric unit directly or through the transmission unit; and a first clutch provided directly or through the transmission unit between and coupled to the output of rotary part of engine and the second drive system; wherein when the system operates as the series power drive system, the first clutch is disengaged so as to prevent a rotational kinetic energy from the engine from being transmitted to the second drive system, a portion of a rotational kinetic energy from the engine drives the first load through a transmission unit, another portion of the rotational kinetic energy from the engine drives the first dynamo-electric unit to operate as a generator, and power from the first dynamo-electric unit drives the second dynamo-electric unit through a control unit to function as a motor for driving the second load; and wherein when the system operates as the parallel power drive system, the first clutch is engaged so as to allow the rotational kinetic energy from the engine to be transmitted to the second drive system, a portion of the rotational kinetic energy from the engine drives the first load, and another portion of the rotational kinetic energy from the engine directly drives the second load.