TY - JOUR
T1 - Dynamic Analysis and Control Strategy of Dual-pump System for Automatic Transmission of Microhybrid Electric Vehicle
AU - Liu, Yang
AU - Wu, Xuelei
AU - Guo, Wei
AU - Cheng, Yunjiang
AU - Dong, Peng
AU - Xu, Xiangyang
N1 - Publisher Copyright:
© 2017, Society of Automotive Engineers of China. All right reserved.
PY - 2017/8/25
Y1 - 2017/8/25
N2 - In order to achieve the matching of micro hybrid electric vehicle with automatic transmission (AT) and enhance the transmission efficiency of AT, a dual-pump (mechanical and electric oil pumps) hydraulic system is designed. The models for the demanded cooling/lubricating oil flow rate and the leakage rate of hydraulic valves are established on the basis of vehicle dynamics model. To meet the demand of oil flow rate, a control strategy for dual-pump intelligent cooperated oil supply is devised based on the dynamic simulation of dual-pump hydraulic system, with maximizing efficiency as optimization objective. The results of several typical driving cycle simulations indicate that the fuel consumption when adopting dual-pump system with optimal control is about 2.5% less than that with traditional single pump system, and the results of both bench and filed tests verify the feasibility of the models built and the control strategy adopted and the reliability of dual-pump system.
AB - In order to achieve the matching of micro hybrid electric vehicle with automatic transmission (AT) and enhance the transmission efficiency of AT, a dual-pump (mechanical and electric oil pumps) hydraulic system is designed. The models for the demanded cooling/lubricating oil flow rate and the leakage rate of hydraulic valves are established on the basis of vehicle dynamics model. To meet the demand of oil flow rate, a control strategy for dual-pump intelligent cooperated oil supply is devised based on the dynamic simulation of dual-pump hydraulic system, with maximizing efficiency as optimization objective. The results of several typical driving cycle simulations indicate that the fuel consumption when adopting dual-pump system with optimal control is about 2.5% less than that with traditional single pump system, and the results of both bench and filed tests verify the feasibility of the models built and the control strategy adopted and the reliability of dual-pump system.
KW - Automatic transmission
KW - Control strategy
KW - Electrical oil pump
KW - Microhybrid electric vehicle
UR - https://www.scopus.com/pages/publications/85032375642
U2 - 10.19562/j.chinasae.qcgc.2017.08.004
DO - 10.19562/j.chinasae.qcgc.2017.08.004
M3 - 文章
AN - SCOPUS:85032375642
SN - 1000-680X
VL - 39
SP - 870
EP - 878
JO - Qiche Gongcheng/Automotive Engineering
JF - Qiche Gongcheng/Automotive Engineering
IS - 8
ER -