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    • Effect of Engine Transient Characteristics on Vehicle'sDriving Cycle Power and Fuel Consumption
    DOI：
    Key Words:transient characteristics  driving cycle  universal characteristics  driving cycle fuel consumption
    Author NameAffiliation
    ANG Jing,MI Lin，LI Yangtao 1.Vehicle Engineering Institute, Chongqing University of Technology, Chongqing, 400054， China
    2.Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo N2L3G1, Canada 
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    Abstract:In order to solve the problem of using the engine steady state universal characteristics to calculate the vehicles driving cycle performance, the transient characteristics of a gasoline engine for motorcycle use were measured by simulating the vehicle driving cycle conditions on the engine dynamic bench. And then, the mixture formation and combustion process of the engine were improved under transient conditions, thus resulting in an increase in engines transient response frequency. Experimental results show that in the case of small changes in the steady state characteristics of the engine, the improvements of transient characteristics not only slightly enhance the vehicles dynamic property, but also significantly reduce the 100km fuel consumption in the vehicle driving cycle.
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