A review of prechamber ignition systems as lean combustion technology for SI engines
A review of prechamber ignition systems as lean combustion technology for SI engines
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DOI：
10.1016/j.applthermaleng.2017.08.118
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发表时间：
2018-01
影响因子：
6.4
通讯作者：
Carlos Eduardo Castilla Alvarez;Giselle Elias Couto;V. Roso;Arthur Braga Thiriet;R. M. Valle
中科院分区：
文献类型：
--
作者：
Carlos Eduardo Castilla Alvarez;Giselle Elias Couto;V. Roso;Arthur Braga Thiriet;R. M. Valle
使用稀薄或超稀薄的空燃比是减少燃油消耗和污染物排放的一种有效且行之有效的策略。前人的研究表明，稀燃混合气可以通过改善燃烧质量、减少换热损失和增加应用更高压缩比的可能性来提高发动机的热效率。然而，气缸内较低的燃料浓度阻碍了混合气的点火，需要更多的能量才能开始燃烧。为了有利于点火过程，人们研究了几种高能量供应器的方法。在它们之间，预燃室点火系统在排放水平和燃料消耗方面表现出潜在的降低，使用稀薄燃烧混合气和表现出的燃烧稳定性。本文对作为稀薄燃烧技术的预燃室点火系统进行了文献综述，重点介绍了预燃室点火技术在燃烧和排放特性方面的研究进展，提出了预燃室点火技术应用的主要优势和面临的挑战。从这一综述中可以看出，预燃室点火系统是提高火花点火发动机热效率、降低燃油消耗和排放的重要途径。
Use of lean or ultra-lean air-fuel ratios is an efficient and proven strategy to reduce fuel consumption and pollutant emissions. Previous works indicate that lean burn mixtures improves engine thermal efficiency by improving combustion quality, reducing heat transfer losses and increasing the possibility of apply higher compression ratios. However, lower fuel concentration in cylinder hinders mixture ignition, requiring greater energy to start combustion. To favor the ignition process, several high energy providers methods have been studied. Between them, prechamber ignition system presents potential reductions in emission levels and fuel consumption, operating with lean burn mixtures and expressive combustion stability. In this paper, a literature review has been made about prechamber ignition systems as lean combustion technology, focusing in the several investigations regarding combustion and emissions characteristics and presenting the key advantages and challenges in prechamber ignition technology application. From this review can be observed that the pre-chamber ignition system is an important way to increase thermal efficiency, reduce fuel consumption and emissions in spark ignition engines.