The Advanced Low Pilot Ignited Natural Gas (ALPING) engine is proposed as an alternative to diesel and conventional dual fuel engines. Experimental results from full load operation at a constant speed of 1700 rev/min are presented in this paper. The potential of the ALPING engine is realized in reduced NOx emissions (less than 0.2 g/kWh) at all loads accompanied by fuel conversion efficiencies comparable to straight diesel operation. Some problems at advanced injection timings are recognized in high unburned hydrocarbon (HC) emissions (25 g/kWh), poor engine stability reflected by high COVimep (about 6 percent), and tendency to knock. This paper focuses on the combustion aspects of low pilot ignited natural gas engines with particular emphasis on advanced injection timings (45°–60°BTDC).
- Internal Combustion Engine Division and Rail Transportation Division
The Advanced Injection Low Pilot Ignited Natural Gas Engine: A Combustion Analysis
Srinivasan, KK, Krishnan, SR, Singh, S, Midkiff, KC, Bell, SR, Gong, W, Fiveland, SB, & Willi, M. "The Advanced Injection Low Pilot Ignited Natural Gas Engine: A Combustion Analysis." Proceedings of the ASME 2003 Internal Combustion Engine and Rail Transportation Divisions Fall Technical Conference. Design and Control of Diesel and Natural Gas Engines for Industrial and Rail Transportation Applications. Erie, Pennsylvania, USA. September 7–10, 2003. pp. 129-135. ASME. https://doi.org/10.1115/ICEF2003-0714
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