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Comparative engine performance and emission analysis of CNG and gasoline in a retrofitted car engine

journal contribution
posted on 06.12.2017, 00:00 by M Jahirul, H Masjuki, R Saidur, M Kalam, M Jayed, M Wazed
A comparative analysis is being performed of the engine performance and exhaust emission on a gasoline and compressed natural gas (CNG) fueled retrofitted spark ignition car engine. A new 1.6 L, 4-cylinder petrol engine was converted to the computer incorporated bi-fuel system which operated with either gasoline or CNG using an electronically controlled solenoid actuated valve mechanism. The engine brake power, brake specific fuel consumption, brake thermal efficiency, exhaust gas temperature and exhaust emissions (unburnt hydrocarbon, carbon mono-oxide, oxygen and carbon dioxides) were measured over a range of speed variations at 50% and 80% throttle positions through a computer based data acquisition and control system. Comparative analysis of the experimental results showed 19.25% and 10.86% reduction in brake power and 15.96% and 14.68% reduction in brake specific fuel consumption (BSFC) at 50% and 80% throttle positions respectively while the engine was fueled with CNG compared to that with the gasoline. Whereas, the retrofitted engine produced 1.6% higher brake thermal efficiency and 24.21% higher exhaust gas temperature at 80% throttle had produced an average of 40.84% higher NOx emission over the speed range of 1500–5500 rpm at 80% throttle. Other emission contents (unburnt HC, CO, O2 and CO2) were significantly lower than those of the gasoline emissions.

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Volume

30

Issue

14-15

Start Page

2219

End Page

2226

Number of Pages

8

ISSN

1359-4311

Location

Netherlands

Publisher

Elsevier

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Department of Engineering Design and Manufacture; Department of Mechanical Engineering; Department of Mechanical Engineering; Faculty of Sciences, Engineering and Health; TBA Research Institute;

Era Eligible

Yes

Journal

Applied thermal engineering.

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