Design of control strategy for extended-range electric vehicle based on Atkinson cycle engine
ZHANG Xin
WU Jianzheng
SONG Wen
WEI Yueyuan
Abstract：Efficient energy management in hybrid vehicles is the key for reducing fuel consumption and emissions.In order to get better fuel economy and control effect,the structural characteristics and working modes of the extended-range electric vehicle (E-REV) with Atkinson cycle engine are analyzed.Based on the characteristics of Atkinson cycle engine,the conventional thermostat control strategy and power follower control strategy are optimized.The three-point control strategy and the speed switching-power follower control strategy are then proposed.The co-simulation model is developed based on Cruise and Matlab.Compared with the conventional thermostat control strategy,the three-point control strategy can effectively prevent the large current charging of battery and reduce the damage to cycle life of battery.Simulation results show that the proposed speed switching-power follower control strategy can effectively reduce the frequent fluctuation of engine speed and improve the fuel economy.It provides references for the development of practical control strategy for E-REV using the Atkinson cycle engine.
Keywords：extended-range electric vehiclecontrol strategyco-simulationAtkinson cycle engine
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 98-103 )