Patent ID: 8202196

Claim:
A clutch engaging control system in a hybrid power output device, the power output device comprising: an engine; a first motor; a second motor operatively coupled to the first motor by a clutch; a battery electrically connected to the first motor and the second motor; a speed reducing mechanism connected to an output of the second motor; a drive shaft connected to an output of speed reducing mechanism; the clutch engaging control system comprising: a speed transducer configured to determine a rotational speed ω 2 of the second motor and provide a rotational speed signal; a controller configured receive the rotational speed signal from the speed transducer; when power output from the engine is needed in addition to power output from the second motor, the controller is configured to: set the rotational speed of the second motor ω 2 as a target rotational speed ω 0 of the first motor, and control the first motor to start the engine and drive the engine such that an actual rotational speed ω 1 of the first motor approximates the target rotational speed ω 0 of the first motor; control the first motor to switch from a driving motor mode to a power generation mode to load the engine to stabilize the rotational speed of the engine; and control the clutch to engage when the actual rotational speed ω 1 of the first motor approximates the target rotational speed ω 0 of the first motor.