Clutch model control method and system for wet dual clutch transmission

Abstract

The invention discloses a clutch model control method and system of a wet-type double-clutch transmission and belongs to the technical field of automobiles. The clutch model control method of the wet-type double-clutch transmission comprises the steps of respectively acquiring a current temperature value and a cooling flow value of a clutch model, performing table look-up of the current temperature value and the cooling flow value to obtain a thermal-generating compensation factor, obtaining an actual torque value of the clutch model, calculating slipping friction rate of the clutch model, calculating the final thermal-generating power of the clutch model according to the thermal-generating compensation factor, the actual torque value and the slipping friction rate, calculating a simulation temperature value of the clutch model according to the final thermal-generating power and controlling the clutch model to execute temperature reduction operation according to the simulation temperature value. According to the clutch model control method and system of the wet-type double-clutch transmission, the clutch model can be timely controlled to execute temperature reduction operation when the simulation temperature reaches a set value, and accordingly the clutch model is prevented from being damaged due to overheat.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a clutch model control method and system for a wet dual-clutch transmission. Background technique [0002] A typical wet dual clutch transmission consists of two coaxial nested or parallel clutches, two coaxial, inner and outer nested input shafts, two parallel output shafts, and multiple clutches arranged on the output shafts. Synchronizer device, multiple shift forks and a differential. The odd and even gear input gears of the transmission are respectively arranged on the two input shafts, through the switching of the two clutches and the action of different synchronizers, the torque conversion and output are realized through different output shafts. [0003] In order to perform a functional test on the control software of the wet dual clutch transmission, it is usually based on software such as Matlab / Simulink, etc., to model the real clutch hardware, and then input relev...

AI Technical Summary

Problems solved by technology

[0004] Since the clutch model will generate friction and heat during the friction process, the temperature of the clutch model will rise, and when the temperature rises to a certain level, the clutch model will be damaged

The research on the clutch model in the prior art is limited to the simulation of the clutch working process, and does not involve the heat generation process, so when the heat accumulates to a certain extent during the simulated clutch working process, the clutch model is likely to be damaged

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