Optical investigations of fuel deposition burning in ported fuel injection (PFI) spark-ignition (SI) engine

被引：11

作者：

Merola, Simona S. ^{[1
]}

Vaglieco, Bianca M. ^{[1
]}

机构：

[1] CNR, Ist Motori, I-80125 Naples, Italy

来源：

ENERGY | 2009年 / 34卷 / 12期

关键词：

SI engine; Optical diagnostics; Fuel deposition; Pool fire; Exhaust nanoparticles; LOW-PRESSURE IMPACTOR; FLAME;

D O I：

10.1016/j.energy.2008.08.018

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The present paper discusses the results obtained by experimental investigations of the diffusion-controlled flame near the valves due to fuel film deposition in a single cylinder, ported fuel injection (PFI), four-stroke spark-ignition (SI) engine with a four-valve production head. The engine was equipped with a transparent combustion chamber with a wide quartz window in the bottom. Optical techniques, based on 2D-digital imaging and natural emission spectroscopy, were used to follow the flame propagation and the chemical species involved in the fuel deposition burning near the valves. Two-colour pyrometry was applied to evaluate the flame temperature and soot concentration. Finally, exhaust particle size distributions were measured and correlated with the fuel deposition burning. The effects of different operating conditions in terms of speed, spark timings, and injection phasing were tested. Moreover, the effect of multi-component fuel was investigated by the comparison between commercial gasoline and pure iso-octane. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：2108 / 2115

页数：8

共 21 条

[11] Measuring particulate mass emissions with the electrical low pressure impactor [J].