《能源前沿（英文）》
>> 2008年
第2卷
第2期
doi:
10.1007/s11708-008-0038-x
Effects of EGR on combustion process of DI diesel
engine during cold start
Key Laboratory for Power Machinery and Engineering of Education Ministry, Shanghai Jiao Tong University
发布日期：
2008-06-05
下一篇
上一篇
摘要
Experiments on the effects of external and internal exhaust gas recirculation (EGR) on combustion and emission performance during a cold start process were investigated in a 135 single-cylinder DI diesel engine. Combustion was improved during the initial ignition cycles by introducing internal or external EGR. The addition of an appropriate amount of internal or external EGR can promote the combustion stability significantly. However, excessive amounts of external EGR could lead to extremely unstable combustion or even misfiring. An appropriate amount of internal or external EGR decreased smoke opacity effectively during a cold start. External EGR reduced NO emissions effectively while internal EGR led to an increase in NO emissions due to thermal effects.
京公网安备 11010502051620号
