Patent ID: 7695403

Claim:
A split series-parallel hybrid dual-power drive system operable selectively as a series power drive system and as 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; a second drive system for driving a second load; the second drive system including a second dynamo-electric unit, the second load being coupled to the second dynamo-electric unit; a clutch ( 112 ) provided between and coupled to the first dynamo-electric unit ( 101 ) and the first load; and a drive control unit for controlling the first drive system, the second drive system and the clutch; wherein when the system operates as the series power drive system, the clutch ( 112 ) is disengaged, so that the engine runs at lower fuel consumption with higher fuel saving so as to reach brake specific fuel consumption, and at this time an electric power from the first dynamo-electric unit drives the second dynamo-electric unit via the control unit to drive the second load.