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李进普,沈国华,任向飞,王亮,曹付广,刘健,刘宏洋,牛立亚,马燕,侯亮.高压共轨柴油机后喷对机油稀释影响的试验研究[J].柴油机,2015,37(4):11-13, 27. [点击复制]
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| 高压共轨柴油机后喷对机油稀释影响的试验研究 |
| 李进普,沈国华,任向飞,王亮,曹付广,刘健,刘宏洋,牛立亚,马燕,侯亮 |
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| 长城汽车股份有限公司, 河北 保定 071000 |
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| 摘要:针对高压共轨柴油机为实现DPF的主动再生，实施燃油后喷导致发动机机油稀释的问题进行试验研究。试验使用两次后喷，第一次后喷在上止点后20°～40°，第二次后喷在上止点后120°～180°。研究表明:通过适量使用后喷1，尽量减小后喷2的油量，适当调整后喷2的喷油正时，可实现达到DPF主动再生目标温度的同时，最大程度地降低由于后喷作用引起的机油稀释现象。 |
| 关键词: 微粒捕集器 再生 机油 稀释 喷油正时 喷油量 |
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| Experimental Research on the Influence of Post-injection on Oil Dilutionwith High Pressure Common Rail Diesel Engines |
| Li Jinpu,Shen Guohua,Ren Xiangfei,Wang Liang,Cao Fuguang,Liu Jian,Liu Hongyang,Niu Liya,Ma Yan,Hou Liang |
| Great Wall Motor Co.Ltd., Hebei Baoding 071000 |
| Abstract:To solve the problem that high pressure common rail diesel engine met with oil dilution during post-injection for DPF regeneration, experimental research were carried out. The experiment used two injections method, the first injection was 20°～40°after the TDC, and the second injection was 120°～180°after the TDC. The research show that with proper amount of oil at the first post-injection, and minimize the oil injection at the second post-injection while properly adjust the injection timing, DPF regeneration temperature could be achieved, and the phenomenon of oil dilution due to post-injection could be minimized. |
| Key words: diesel particular filter regeneration oil dilution injection timing injection volume |