Dual-Fuel Spark Ignition (DFSI) combustion fuelled with different alcohols and gasoline for fuel efficiency

被引：58

作者：

Liu, Hui ^{[1
]}

Wang, Zhi ^{[1
]}

Long, Yan ^{[1
]}

Wang, Jianxin ^{[1
]}

机构：

[1] Tsinghua Univ, State Key Lab Automot Safety & Energy, Beijing 100084, Peoples R China

来源：

FUEL | 2015年 / 157卷

基金：

中国国家自然科学基金;

关键词：

Alcohols-gasoline combustion; Dual-Fuel Spark Ignition; Engine knock; Port fuel injection and direct injection (PIDI); SUPER-KNOCK; BIOFUELS; ETHANOL;

D O I：

10.1016/j.fuel.2015.04.042

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

This paper investigates an experimental study of Alcohols-gasoline Dual-Fuel Spark Ignition (DFSI) Combustion for knock suppression and high fuel efficiency using a gasoline engine with high compression ratio. Alcohols-gasoline DFSI is organized using a port-fuel-injection (PFI) of high oxygenated, high latent heat and high octane number fuel to suppress knock and a direct injection (DI) of high energy density and high volatility fuel to extend high load. Systematical comparison about the effect of stoichiometric M-G (PFI-Methanol and DI-Gasoline), E-G (PFI-Ethanol and DI-Gasoline), E85W15-G (PFI-15% water and 85% ethanol and DI-Gasoline) and G-G (PFI-Gasoline and DI-Gasoline) DFSI on engine knock suppression was conducted. For each test, the percentage of PFI-Alcohol was varied from 0% to 100%. The effects of these combustion modes on knock-limit extension, fuel economy, and combustion characteristics were investigated. Alcohols-gasoline DFSI is a potential approach of using alternative alcohol fuels in practical gasoline engines with significant improvement in engine efficiency and knock suppression. M-G DFSI exhibits better anti-knock performance and achieves higher fuel efficiency than other combustion modes. (c) 2015 Elsevier Ltd. All rights reserved.

引用

页码：255 / 260

页数：6

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