Development of an Ignition System and Assessment of Engine Performance and Exhaust Characteristics of a Marine Gas Engine

Kichol Noh and Changhee Lee
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Kichol Noh: Department of Mechanical and Shipbuilding Convergence Engineering, Pukyong National University, Busan 48547, Korea
Changhee Lee: Department of Mechanical and Shipbuilding Convergence Engineering, Pukyong National University, Busan 48547, Korea

Sustainability, 2021, vol. 13, issue 8, 1-16

Abstract: In recent years, marine engine manufacturers have become increasingly interested in gas engines as an alternative to diesel engines to address rising crude oil prices and environmental regulations. In this study, a 1.6 MW dedicated gas engine was developed based on a diesel engine with bore 220, stroke 300. The developed gas engine had a precombustion chamber and exhibited excellent performance; the brake mean effective pressure was 2.1 MPa at 1000 rpm and NOx emissions were 50 ppm under 15% O 2 . In particular, it demonstrated excellent fuel economy with a thermal efficiency of 45%, and its carbon dioxide emissions were ~75% of the conventional diesel engines, thus demonstrating greenhouse gas reduction. These results indicate that suitably developed gas engines can provide a low-cost and energy-efficient alternative to diesel engines.

Keywords: gas engine; Miller cycle; lean combustion; precombustion chamber; excess air ratio (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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