Method and system for oil filling control of wet dual clutch

Abstract

The invention discloses a wet double-clutch oil charge control method and a wet double-clutch oil charge control system. The wet double-clutch oil charge control method includes judging whether clutch oil charge closed-loop control needs to be activated or not according to current working conditions, start states and gear shifting states of an integral vehicle; acquiring expected pressures of clutch oil charge closed-loop control and expected pressures of clutch oil charge open-loop control if clutch oil charge closed-loop control needs to be activated; carrying out oil charge control on wet double clutches according to target clutch pressures which are the sum of the expected pressures of clutch oil charge closed-loop control and the expected pressures of clutch oil charge open-loop control. The wet double-clutch oil charge control method and the wet double-clutch oil charge control system have the advantages that actual pressures of the clutches can reach the target clutch pressures under the control within the preset maximum oil charge durations, so that the problems of impact on existing vehicles, severe slipping of existing clutches or suppressing and flameout of existing engines due to improperly selected target clutch pressures can be solved, the driving comfort of the integral vehicle can be enhanced, and the service lives of the clutches can be prolonged.

Description

technical field [0001] The invention relates to the field of clutch control, in particular to a wet double clutch oil filling control method and system. Background technique [0002] The wet clutch automatic transmission is more and more favored by users due to its simple and easy-to-operate characteristics. The working principle of the wet clutch is as follows: During the clutch engagement process, the pressure oil enters the side of the clutch cylinder through the oil passage, pushing the piston to The other side moves and presses the friction plate, so that the driving side and the driven side of the clutch realize synchronous movement. During the oil filling process of the clutch, the pressure relief hole is sealed by the barrier, so there is no pressure oil leakage; while in the oil discharge stage, the barrier no longer blocks the pressure relief hole under the action of centrifugal force, and the pressure relief hole is opened, so that the clutch is active / Driven s...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a wet dual-clutch oil filling control method and system, which solves the lack of vehicle power caused by the actual pressure of the clutch not reaching the kisspoint point in the prior art, or the impact of the vehicle caused by the actual pressure of the clutch being greater than the kisspoint point, and even engine failure. The phenomenon of being suffocated

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