Patent ID: 8702560
Filing Date: 2014-04-22
Classification: B60K,B60W,E02F,F16D,Y02T,Y10T

Abstract:
1. A construction machine comprising: wheels for running which are mounted on a vehicle body; an engine; a motor-generator having two functions as a generator and a motor; a capacitor electrically connected to the motor-generator; a hydraulic pump driven by the engine; and a power transmission mechanism that performs power transmission between the engine and the motor-generator, power transmission between the motor-generator and the wheels, and power transmission between the engine and the hydraulic pump, wherein: the power transmission mechanism that performs the power transmission between the engine and the motor-generator includes a clutch and clutch switching means that switches the clutch between an engaged state and a disengaged state; and when the clutch switching means is used to switch the clutch to the engaged state, a drive force of the wheels is transferred to the engine and the hydraulic pump through the power transmission mechanism, so that engine braking by the engine and a hydraulic brake force by the hydraulic pump are obtained for deceleration of the wheels.