轻型车用柴油机起动怠速过渡过程瞬态喷油量控制

doi:10.13229/j.cnki.jdxbgxb201604014

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

轻型车用柴油机起动怠速过渡过程瞬态喷油量控制

韩晓梅¹, 林学东¹, 李德刚¹, 李闯²

1.吉林大学汽车仿真与控制国家重点实验室,长春 130022;
2.联合汽车电子有限公司,上海201206

收稿日期:2015-04-21 出版日期:2016-07-20 发布日期:2016-07-20
通讯作者: 李德刚(1976-),男,讲师,博士.研究方向:内燃机工作过程优化及电控技术.E-mail:ldg@jlu.edu.cn
作者简介:韩晓梅(1988-),女,博士研究生.研究方向:内燃机工作过程优化及电控技术.E-mail:wulisg0729@163.com
基金资助:
吉林省发改委产业技术研究与开发项目(2014Y093); 中国博士后科学基金项目(2013M541295)

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.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

摘要/Abstract

摘要： 提出了一种基于目标转矩的起动过程瞬态喷油量控制方法,并在2.8 T型高压共轨直喷柴油机上与恒定油量控制方法以及油量MAP式控制方法进行了对比试验。结果表明:基于MAP式控制方法在起动过程中虽然NO_x排放少,但燃烧效率也低,HC和CO排放较高;恒定油量控制方法在起动过程中能保持较高的燃烧效率,HC和CO排放较低,但NO排放多,而且起动过渡到怠速时转速波动较大;本文控制策略可根据起动过程中转速的变化精确控制瞬态喷油量,因此起动过程中燃油消耗量最少、燃烧效率高、CO₂排放最低,在HC和CO以及NO_x排放水平较低的前提下,可以实现起动过程平稳地过渡到怠速状态。

关键词: 动力机械工程, 直喷柴油机, 高压共轨, 起动性能, 目标转矩, 控制策略

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 NO_x 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 NO_x 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 NO_x 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

中图分类号:

TK421.2

韩晓梅, 林学东, 李德刚, 李闯. 轻型车用柴油机起动怠速过渡过程瞬态喷油量控制[J]. 吉林大学学报(工学版), 2016, 46(4): 1103-1108.

HAN Xiao-mei, LIN Xue-dong, LI De-gang, LI Chuang. Injection quantity control strategy for starting to idling transition of light duty diesel engine[J]. 吉林大学学报(工学版), 2016, 46(4): 1103-1108.

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轻型车用柴油机起动怠速过渡过程瞬态喷油量控制

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

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