高压共轨柴油机起动过程喷射控制参数的匹配研究  

Matching Research on Injection Control Parameters during Starting of CRS Diesel Engine

作　　者：钟祥麟[1] 于秀敏[2] 张斌[3] 高继东[1] 

机构地区：[1]中国汽车技术研究中心,天津300162 [2]吉林大学汽车工程学院 [3]东风汽车公司技术中心

出　　处：《内燃机工程》2008年第4期6-10,共5页Chinese Internal Combustion Engine Engineering

基　　金：“十五”国家科技攻关计划资助项目(2003BA408B04)

摘　　要：高压共轨系统起动过程控制参数多,控制自由度大,对控制参数的匹配标定和优化是一项复杂且耗时的工作。在外界温度11℃、大气压力100 kPa的条件下,以降低HC排放和缩短起动时间为优化目标,采用正交试验法对1台高压共轨柴油机起动过程的喷射控制参数进行了匹配研究。通过分析正交试验结果,确定起动油量和主喷提前角的影响最大,其余的参数影响相对较小,并得到了喷射控制参数的优化组合:起动油量20 mg/cyc、主喷射提前角上止点前10°CA、共轨油压30 MPa、预喷油量2 mg/cyc、预喷时间2 000μs。试验证明采用正交试验方法可以提高匹配优化效率。For high pressure common rail fuel injection system（CRS）,there are many control parameters and the control degree of freedom during engine starting, therefore, the matching and optimization of control parameters is a complicated and time-expending work. Under the condition of 11 ℃ atmospheric temperature and 100 kPa atmospheric pressure, the matching of injection control parameters during starting period of a CRS diesel engine was invetigated by using orthogonal experiment method in order to reduce HC emission and decrease startup time. The test results show that the starting fuel quantity and main injectionadvanced angle are the main influence factors, and other injection parameters have a less influence. The combination of following parameters is the optimum combination; starting fuelquantity 20 mg/cyc, main injection advanced angle is 10 ℃A BTDC, common rail pressure 30 MPa, pilot injection fuel quantity 2 mg/cyc, pilot injection duration 2 000μs. It is proved that the orthogonal experiment can improve matching and optimizing efficiency.

关 键 词：内燃机 高压共轨柴油机 起动过程 正交试验法 喷射控制 匹配 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]