Clutch pressure determination method and device, vehicle and storage medium

Abstract

The embodiment of the invention discloses a clutch pressure determination method and device, a vehicle and a storage medium. The method comprises the steps that when a clutch is in an oil charging working condition, a current current value of a pressure control electromagnetic valve at a current acquisition moment is acquired; and if a clutch pressure sensor at the current acquisition moment is ina failure state, a current pressure value of an execution oil path in the clutch at the current acquisition moment is determined according to the current current value and a historical acquisition value at each historical acquisition moment. According to the technical scheme of the embodiment, the pressure of the execution oil path in the failure state is estimated according to parameters calculated under the normal state of the clutch pressure sensor, so that the problem that output of an oil pressure control signal of a transmission controller is unstable when a wet clutch pressure sensor fails under the oil charging working condition is solved, and the safety in the running process of the vehicle is improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of clutch control, in particular to a method, device, vehicle and storage medium for determining clutch pressure. Background technique [0002] The wet clutch is a core part widely used in automatic transmissions of automobiles. The hydraulic system adjusts the torque transmitted by the clutch by controlling the oil pressure of the clutch executive oil circuit. [0003] The clutch pressure is usually collected by a pressure sensor installed on the hydraulic actuator oil circuit, and the signal is sent to the transmission controller. The transmission controller combines the current pressure of the clutch actuator oil circuit to control the various actuator components of the transmission according to the built-in operation logic. However, when the clutch pressure sensor fails or the connection line between the sensor and the controller is disconnected, the clutch pressure signal will ...

AI Technical Summary

Problems solved by technology

[0004] However, the use of dual redundant sensors for oil circuit pressure collection increases the cost of vehicle formation, and redundant sensors are doing useless work most of the time, which affects the efficiency of vehicle components

In the case of no pressure sensor signal, the open-loop control of the clutch pressure may cause shock or flameout during vehicle driving, thus affecting the driving safety and driving stability of the vehicle.

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