Effects of fuel atomization on cold starting of a 4 stroke cycle spark ignition engine

被引：0

作者：

Araki, Mikiya ^{[1
]}

Obokata, Tomio ^{[1
]}

Ishima, Tsuneaki ^{[1
]}

Shiga, Seiichi ^{[1
]}

Masubuchi, Masahiko ^{[1
]}

Sugimoto, Tomojiro ^{[1
]}

机构：

[1] Department of Mechanical Engineering, Gunma University, 1-5-1 Tenjin-cho, Kiryu-shi, Gunma, 376-8585, Japan

来源：

Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B | 2008年 / 74卷 / 08期

关键词：

Air fuel ratios - Fuel atomization - Liquid atomization - Micro-nozzle-array - Port fuel injectors - Sauter mean diameter (SMD) - Single cylinders - Unburned hydrocarbons;

D O I：

10.1299/kikaib.74.1860

中图分类号：

学科分类号：

摘要：

Effects of fuel atomization on cold starting of a 4 stroke cycle spark ignition engine were investigated experimentally. Two kinds of ultrasonic fuel injectors using a micro nozzle array (MNA injectors) were applied, whose nozzle diameter d = 4 and 6 μm, respectively. A conventional port fuel injector (PFI injector) was also used for comparison. The Sauter mean diameters (SMDs) of the sprays were 15μm (MNA, d = 4 μm). 23 μm (MNA, d=6μm), and 59μm (PFI), respectively. An air cooled, single cylinder, 4 stroke cycle, spark ignition engine was used. The first ignition cycles and the cumulative fuel amount were investigated at a wide range of the air fuel ratio. For the MNA injector (d = 4 μm), the first ignition cycle became much earlier when compared with the PFI injector. The cumulative fuel amount during cold starting reduced by about 30%. It is shown that, by use of the MNA injector, the unburned hydrocarbon emissions during cold starting could be reduced.

引用

页码：1860 / 1868

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