Control method of clutch for hybrid power vehicle

Abstract

The invention discloses a control method of a clutch for a hybrid power vehicle, and belongs to the technical field of control of vehicle clutches. The control method mainly comprises the following steps: (1) a HCU (Hydraulic Control Unit) sends a clutch transfer torque demand to a CCU (Central Control Unit); (2) the CCU calculates and analyzes a received clutch transfer torque demand signal to obtain a clutch demanded position; (3) an actual clutch position is obtained through a clutch position sensor; and the clutch position is adjusted according to the difference between the demanded position and the actual position of the clutch, so that the clutch moves to the demanded position; and (4) the actual clutch position is obtained through the position sensor in real time, and the moving direction of the clutch is adjusted until the demanded position is reached. The control method solves such technical problems as easy motor damage, high processing precision requirement, low control precision and system unreliability. The control method realizes the mode switchover, the torque transfer, the starting / parking and the gear shifting separation of the hybrid power vehicle and the precise torque control of the clutch.

Description

technical field [0001] The invention relates to the technical field of vehicle clutch control, in particular to a hybrid vehicle clutch control method. Background technique [0002] The clutch is installed between the engine and the transmission, and is an assembly directly connected with the engine in the car drive train. Usually, the clutch is installed together with the flywheel set of the engine crankshaft, which is the part that cuts off and transmits power between the engine and the vehicle transmission system. During the whole process of the car from starting to normal driving, the driver can manipulate the clutch as needed to temporarily separate or gradually engage the engine and drive train to cut off or transfer the power output from the engine to the drive train. Its function is to make the engine and the transmission gradually engage, so as to ensure the smooth start of the car; temporarily cut off the connection between the engine and the transmission, so as t...

AI Technical Summary

Problems solved by technology

[0006] For this reason, the technical problem to be solved by the present invention is that in the prior art, the motor is easily damaged, the processing accuracy is high, the control accuracy is low, and the system is unreliable, so a clutch control method for hybrid electric vehicles is proposed, which can realize hybrid electric vehicle Precise torque control for mode switching, torque delivery, start-stop, shift-off, and clutch

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