吉林大学学报(工学版) ›› 2016, Vol. 46 ›› Issue (4): 1103-1108.doi: 10.13229/j.cnki.jdxbgxb201604014

• Orginal Article • Previous Articles     Next Articles

Injection quantity control strategy for starting to idling transition of light duty diesel engine

HAN Xiao-mei1, LIN Xue-dong1, LI De-gang1, LI Chuang2   

  1. 1.State Key Laboratory of Automotive Simulation and Control,Jilin University,Changchun 130022,China;
    2.United Automotive Electronic Systems Co, Ltd,Shanghai 201206,China
  • Received:2015-04-21 Online:2016-07-20 Published:2016-07-20

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Abstract: A target torque based injection quantity control strategy for diesel engine starting is presented, which is compared with constant fuel quantity control method and MAP based control method by experiments on a 2.8 T high pressure common rail diesel engine. The results show that, with the MAP based control, the NOx emission is lower but the HC and CO emissions are higher and the combustion efficiency is lower. The combustion efficiency of the constant fuel quantity control is higher and the HC and CO emissions are lower, but the NOx emission is higher and the speed fluctuation is serious during the transition from start to idle. With the proposed control strategy, the injection quantity is accurately controlled according to the instantaneous torque demand, so the fuel consumption is lower and the combustion efficiency is higher, meanwhile, the CO, HC and NOx emissions are lower, the transition from start to idle is smooth.

Key words: power machinery engineering, DI diesel engine, high pressure common-rail, starting performance, target torque, control strategy

CLC Number: 

  • TK421.2
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