[1]孙德志,刘盛强,刘鲁宁,等.液态LPG中心喷射发动机混合气形成的研究[J].山东建筑大学学报,2010,(06):581-585.
 SUN De-zhi,LIU Sheng-qiang,LIU Lu-ning,et al.Research on mixture formation of LPG for a center injection DISI engine[J].Journal of Shandong jianzhu university,2010,(06):581-585.
点击复制

液态LPG中心喷射发动机混合气形成的研究
()
分享到:

《山东建筑大学学报》[ISSN:1673-7644/CN:37-1449/TU]

卷:
期数:
2010年06期
页码:
581-585
栏目:
研究论文
出版日期:
2010-12-15

文章信息/Info

Title:
Research on mixture formation of LPG for a center injection DISI engine
作者:
孙德志1刘盛强2刘鲁宁3田海影1许伯彦1
 (1.山东建筑大学 机电工程学院, 山东 济南 250101
2. 中国重汽集团有限公司,山东 济南 250001
3.济南大学 机械工程学院, 山东 济南 250022)
Author(s):
SUN De-zhi1 LIU Sheng-qiang2 LIU Lu-ning3 et al.
1. School of Mechanical and Electrical Engineering, Shandong Jianzhu University, Jinan 250101, China;
2. China National Heavy Duty Truck Group Co. Ltd., Jinan 250001, China;
3. School of Mechanical Engineering, University of Jinan, Jinan 250022, China
关键词:
液态LPG直喷壁面引导
Keywords:
liquid phase LPG direct injection wall guided
分类号:
TK432
文献标志码:
A
摘要:
当液态LPG以5MPa高压直接喷入气缸时,将发生剧烈地闪急沸腾现象,这对于改善壁面引导式燃烧系统的缸内直喷发动机的燃料附壁现象、降低HC排放具有非常积极的作用。本文在验证了采用的计算方法可行性的基础上,就提出的中心喷射的壁面引导式燃烧室结构,数值解析了电控LPG缸内直喷发动机在不同负荷工况时混合气的形成过程。结果表明:部分负荷时采用压缩过程中后期喷射,15°BTDC时缸内可形成理想的分层构造;大负荷时采用进气中期130°ATDC喷射,在压缩冲程末期可形成均质功率混合气。
Abstract:
While liquid phase LPG’s (Liquefied Petroleum Gas) is directly injected into cylinder by a high pressure (5 MPa), the occurrence of flash boiling is being proposed to play an important role in reducing oil-sticking of the cylinder and HC emissions at a Wall Guided DISI (Direct Injection Spark Ignition) engine. With the validation of the feasibility on models, this paper numerically simulates the mixture formation in different conditions for a center injection wall guided DISI engine model. The results show that LPG spray forms an ideal stratified mixture at 15°BTDC with a post-compression process in part load conditions, and that it forms a homogeneous power mixture at a high load when injected at 130°ATDC.

相似文献/References:

[1]孙业波,齐运亮,许伯彦,等.液态LPG在闪急沸腾下的喷雾可视化研究[J].山东建筑大学学报,2012,(03):267.
 SUN Ye-bo,QI Yun-liang,XU Bo-yan,et al.Research on visualization of Liquid Phase LPG spray in the flashing boiling[J].Journal of Shandong jianzhu university,2012,(06):267.

更新日期/Last Update: 2011-02-22