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Effect of gas-jet ignition technique on the extension of CNG lean combustion limit

Mohd Ali, Mas Fawzi and Kidoguchi, Yoshiyuki and Nada, Yuzuru (2013) Effect of gas-jet ignition technique on the extension of CNG lean combustion limit. Applied Mechanics and Materials , 315 (2013). pp. 288-292. ISSN 1660-9336

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Abstract

Lean combustion of CNG has the advantage of high thermal efficiency and fewer pollutants than other fossil fuels. However, problems such as ignitability, cyclic variation and high THC emission were common at combustion leaner than equivalence ratio e0.7. The application of gas-jet ignition method to lean combustion was able to address such problems. This paper introduces the concept of gas-jet ignition method, which ensures ignitability at lean bulk equivalence ratio. Moreover, this method is applied to a real CNG engine. Results of engine performance experiment shows that two-stage injection method combined with gas-jet ignition has successfully widen the operating range of a CNG engine from low to high load at corresponding k0.17 to 1.1.

Item Type: Article
Uncontrolled Keywords: CNG; lean combustion; gas-jet ignition
Subjects: T Technology > TJ Mechanical engineering and machinery > TJ241-254.4 Machine construction (General)
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Plant and Automotive Engineering
Depositing User: Normajihan Abd. Rahman
Date Deposited: 19 Jun 2013 04:30
Last Modified: 19 Jun 2013 04:30
URI: http://eprints.uthm.edu.my/id/eprint/3940
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