| 摘要:介绍了柴油/天然气双燃料发动机控制系统的工作原理。对于不同的电控双燃料发动机,如泵喷嘴、单体泵和高压共轨电控发动机的不同断油控制策略做了分析,并通过高压共轨发动机路试,对比了两种不同控制策略的效果。介绍了两种引燃油量标定方法——比例计算法和MAP查表法,路试比较显示:前者占优。根据某型机的路试数据统计得出,该型双燃料发动机的燃料替代率平均可达79%；平均百公里可节约费用128元。 |
| 关键词: 双燃料发动机 控制策略 断油 引燃油量 |
|
| Research on Control Strategies of Diesel/NG Dual Fuel Engines |
| Wu Guangyao |
| Mechanical Engineering Institute, University of Science and Technology Beijing, Beijing 100083 |
| Abstract:The working principle of the control system for diesel oil/natural gas dual fuel engine is introduced. The varied cutting-oil control strategies are studied for three different electronic-controlled dual fuel engines, namely pump nozzle, unit pump and high pressure common rail engines. And through the road test on a high-pressure engine, the effect of two control strategies is compared. Moreover, two calibration methods for pilot ignition quantity are introduced, which are proportion computation method and MAP method, and the former one get better results from road test. According to the data statistics of a dual fuel engine\'s road tests, the fuel substitute rate can reach up to 79%, and save 128RMB per hundred kilometers. |
| Key words: dual-fuel engine control strategy cutting fuel leading fuel quantity |
