无级变速车辆起步液力变矩器分段滑差控制*

doi:10.19562/j.chinasae.qcgc.2019.02.009

Abstract

Abstract: To solve the problems of slow acceleration response, high engine speed and engine speed fluctuations in the starting process of CVT vehicle torque converter, a segmented slip control strategy of lock-up clutch at starting conditions is brought forward based on constant engine speed control and a vehicle co-simulation platform based on Amesim and Matlab/Simulink is established to verify the proposed strategy. The simulation results show that the proposed control strategy can advance the locking time of the torque converter by about 1.2s and reduce the fuel consumption by 5.385% at the start stage of 50% throttle opening. The proposed strategy provides a new method for further tapping the fuel-efficient potential of the powertrain

Key words: torque converter, lock-up clutch, slip control, starting condition

Lei Yulong, Hu Jianlong, Fu Yao, Jia Yuzhe, Wang Linbo, Cheng Jing. A Study on Hydraulic Torque Converter Sectional Slip Control for CVT Vehicle Start[J]., 2019, 41(2): 177-183.

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A Study on Hydraulic Torque Converter Sectional Slip Control for CVT Vehicle Start

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