EGR率和进气温度耦合作用下的低温燃烧试验研究

杨欣欣; 石磊; 曲栓; 刘胜; 曹杰; 邓康耀; 杨震寰

doi:10.3969/j.issn.1001-2222.2017.03.002

车用发动机 ›› 2017, Vol. 0 ›› Issue (3) : 8-13. DOI: 10.3969/j.issn.1001-2222.2017.03.002

栏目

EGR率和进气温度耦合作用下的低温燃烧试验研究

杨欣欣1，石磊1，曲栓2，刘胜2，曹杰2，邓康耀1，杨震寰2

作者信息 +

Experimental Research on Low Temperature Combustion under Coupled Effect of EGR Rate and Intake Temperature

YANG Xinxin1， SHI Lei1， QU Shuan2， LIU Sheng2， CAO Jie2， DENG Kangyao1, YANG Zhenhuan2

Author information +

文章历史 +

摘要

基于冷热废气再循环（exhaust gas recirculation，EGR）双回路系统，通过进气温度与EGR率解耦控制，研究了EGR率和进气温度对柴油低温燃烧和排放的影响，并在低温燃烧负荷上限探索EGR率和进气温度耦合作用规律。研究结果表明，负荷上限时，进气温度升高对进气充量的稀释作用占主导地位，进气温度升高对燃烧起抑制作用。 EGR率和进气温度的耦合作用在负荷上限时体现在：低EGR率、高进气温度时，燃烧始点提前、燃烧持续期增大；高EGR率、低进气温度时，指示功增加，平均有效压力增大。EGR率升高，NOx排放量降低，进气温度升高，HC，CO排放量升高。

Abstract

Based on the hot and cold dual circuit EGR, the
impacts of EGR rate and intake temperature on combustion performance and
emissions and the coupled laws on EGR rate and intake temperature at the upper
limit of low temperature combustion load were studied through decoupling of
intake temperature and EGR rate. The results showed that the rise of intake
temperature dominated in the dilution effect of intake charge at the upper load
limit, but suppressed the combustion. The combustion timing advanced and the
combustion duration increased at low EGR rate and high intake temperature and
the indicated work and the mean effective pressure increased at high EGR rate
and low intake temperature. In addition, the NOx emission decreased with the increase of EGR rate and the HC and CO
emissions increased with the increase of intake temperature.

导出引用

杨欣欣，石磊，曲栓，刘胜，曹杰，邓康耀，杨震寰. EGR率和进气温度耦合作用下的低温燃烧试验研究[J]. 车用发动机. 2017, 0(3): 8-13 https://doi.org/10.3969/j.issn.1001-2222.2017.03.002

YANG Xinxin， SHI Lei， QU Shuan， LIU Sheng， CAO Jie， DENG Kangyao, YANG Zhenhuan. Experimental Research on Low Temperature Combustion under Coupled Effect of EGR Rate and Intake Temperature[J]. Vehicle Engine. 2017, 0(3): 8-13 https://doi.org/10.3969/j.issn.1001-2222.2017.03.002