Oil charging self-adaptive control method and system for wet clutch

Abstract

The invention discloses an oil charging self-adaptive control method and a system for a wet clutch. The method comprises the following steps: a present clutch oil charging state is obtained under a peristalsis working condition; when the present clutch oil charging state is an oil charging control state, a present clutch target pressure is obtained; in a preset adjusting time length, the present clutch target pressure is adjusted to a semi-joint point of the clutch; after the adjustment is finished, in a preset integral control time length, a correction parameter of an oil charging compensation value is obtained according to the relation between a difference value of the semi-joint point and actual pressure of the clutch and the correction parameter of the oil charging compensation value; the oil charging compensation value is corrected according to the correction parameter of the oil charging compensation value to obtain a corrected oil charging compensation value; and target pressure of the clutch is adjusted according to the corrected oil charging compensation value. The method can adjust the target pressure value of the clutch to the semi-joint point in the stated time, and can prevent such problems as vehicle impact or even suppressed flameout of an engine.

Description

Technical field [0001] The present invention relates to the field of clutch control, in particular to an oil-filled adaptive control method and system for wet clutches. Background technique [0002] Wet clutches are widely used in automatic transmissions, and their working principles are as follows: During the clutch coupling process, pressure oil enters one side of the clutch cylinder through the oil passage, pushing the piston to the other side to compress the friction plate, so that the clutch is active / The slave side realizes synchronous movement. During the clutch oil filling process, the pressure relief hole is sealed by the barrier, so there is no pressure oil leakage; while in the oil drain stage, the barrier no longer blocks the pressure relief hole under the action of centrifugal force, and opens the pressure relief hole to make the clutch active / The driven side is separated. [0003] Creeping conditions refer to the conditions in which the vehicle can move forward or...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides an oil-filling self-adaptive control method and system for a wet clutch, which solves the problem that in the prior art, the pressure of the clutch cannot be ensured to quickly reach the half-joint point, and the half-joint point will change, resulting in insufficient pressure control accuracy of the clutch The problem

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