A control method for hybrid power isochronous shifting

Abstract

The present invention discloses a method for controlling shifting with equal duration of hybrid power, comprising the following steps: receiving a shift instruction, controlling the clutch to start to disengage; simultaneously controlling the front-end motor to output a reverse torque linearly increasing; controlling the clutch to completely disengage, and at the same time Control the synchronizer in the shifting system to disengage from the current gear, so that the current gear is released and enters neutral; at the same time, the front-end motor is controlled to provide a reverse torque of size control; to determine whether the released gear is the same as the target engaged gear On the root shift fork shaft; according to the results, respectively control the action of the clutch and synchronizer, so that the transmission system enters the target gear; control the engagement of the clutch and enter the transmission torque recovery stage to complete the shift. The present invention ensures that the duration of all shifting processes is roughly the same, so that the driver can have a good driving experience and avoid the feeling of inconsistent waiting time for shifting.

Description

technical field [0001] The present invention relates to the technical field of automobiles, in particular, to a control method for a hybrid equal-time-length shift. Background technique [0002] At present, among new energy vehicles in my country, hybrid vehicles are developing most rapidly. A hybrid vehicle is a vehicle that uses multiple sources of energy, usually a conventional engine using liquid fuel and an electric motor using electrical energy to drive the vehicle simultaneously or separately. [0003] In the hybrid powertrain of new energy vehicles, multiple motors may appear. The front-end motor that is directly connected to the engine at the front end of the clutch and shares the speed is called the front-end motor, and the common ones are commonly called P0 and P1 motors. The motor at the rear end of the clutch and has a solid connection with the transmission / reducer system is called the rear end motor, and the common ones are called P2, P2.5, and P3 motors. ...

AI Technical Summary

Problems solved by technology

The time difference between the two situations to perform gear removal and gear engagement is very large, which is likely to cause unfavorable subjective feelings to the driver that the driving style is inconsistent

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