A comparative study on the first and second law analysis and performance characteristics of a spark ignition engine using either natural gas or gasoline

被引：66

作者：

Gharehghani, A. ^{[1
]}

Hosseini, R. ^{[1
]}

Mirsalim, M. ^{[1
]}

Yusaf, Talal F. ^{[2
]}

机构：

[1] Amirkabir Univ Technol, Dept Mech Engn, Tehran, Iran

[2] Univ So Queensland, Toowoomba, Qld 4350, Australia

来源：

FUEL | 2015年 / 158卷

关键词：

Natural gas fueled engine; Heat balance; Energetic and exergetic efficiency; Destructed exergy; SI ENGINE; THERMAL BALANCE; EXERGY ANALYSES; ENERGY; FUEL;

D O I：

10.1016/j.fuel.2015.05.067

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：

In this study, the effect of fuel type; gasoline or natural gas on the energy and exergy balance as well as the performance of spark ignition engine was experimentally investigated. The experiments were conducted using a four cylinder, naturally aspirated CNG-gasoline bi-fuel engine at wide open throttle (WOT) operating condition. The results showed that when engine was fed with gasoline, the output power was higher than that of gaseous fuel by 4.2 kW on average throughout the engine speed range. Thermal efficiency of the engine with natural gas was higher than that of the gasoline by approximately 5.4% throughout the engine speed range. In addition, CNG fuel showed higher exergetic efficiency than gasoline, and based on these results second law efficiency of CNG engine was higher than that of gasoline engine by 3.18% on average. This was largely due to combustion temperature increase in CNG case. For all operating points, the percentage of energy and exergy transfer through exhaust gases and the cooling system in gasoline are lower than CNG. However the destructed exergy of gasoline was higher than CNG by about 5.8%, averagely. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：488 / 493

页数：6

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