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Effect of LPG Intake Temperature, Pilot Fuel and Injection Timing on the Combustion Characteristics and Emission of a LPG - Diesel Dual Fuel Engine
ISSN: 0148-7191, e-ISSN: 2688-3627
Published November 01, 2001 by The Automotive Research Association of India in India
Annotation ability available
Event: SIAT 2001
Dual fuel engines suffer from problems of poor brake thermal efficiency and high UBHC emission, particularly at low outputs. Pilot fuel quantity and the intake temperature are the two important parameters which control the combustion process in duel fuel engines. In the present experimental work, the effects of LPG intake temperature, pilot fuel quantity and injection timing, on improving the performance of LPG-Diesel dual fuel have been studied. The experiments were conducted on a computer interfaced LPG-Diesel duel fuel engine and the results have been analyzed. Results at 75% of load indicated that an ignition timing of 27° before TDC, gives low emission and high thermal efficiency. At higher LPG intake temperature UBHC and CO levels are low, and improvement in brake thermal efficiency were observed. A marginal increase in NOx level was found with increase in LPG intake temperature. At optimum conditions ie. 27° btdc injection timing, 0.45kg/hr pilot-fuel and at higher loads brake thermal efficiency was found to be higher by 5% compared to diesel mode of operation. Results have been shown that higher pilot -diesel quantity and elevated temperatures are advantageous
CitationMohanan, P. and Suresh Kumar, Y., "Effect of LPG Intake Temperature, Pilot Fuel and Injection Timing on the Combustion Characteristics and Emission of a LPG - Diesel Dual Fuel Engine," SAE Technical Paper 2001-28-0028, 2001, https://doi.org/10.4271/2001-28-0028.
- Karim G A “The dual-fuel engine” X National Conference on IC engines and combustion 1987
- Prabhu Kumar G P Nagalingam B Gopalakrishnan K V “Hydrogen-diesel v/s LPG-Diesel dual-fuel engine -An experimental study” XI National Conference on IC engines and combustion 1989
- Karim G A “An examination of some measures for improving the performance of gas fueled diesel engine at light load” SAE 912366 1991
- Karim G A “The ignition of a premixed fuel and air charge by pilot fuel spray injection with reference to dual-fuel combustion” SAE 680768 77 3017 3024 Oct 1968
- Karim G A Gunea C Razavi M R M “The effect of pilot-fuel quantity on dual-fuel engine ignition delay” SAE 982453 1998
- Poonia M P Ramesh A Gaur R R “Effect of intake air temperature and pilot fuel quantity on the combustion characteristics of a LPG-Diesel dual-fuel engine” Alternative fuels 1998
- Poonia M P Ramesh A Gaur R R “Experimental investigation of the factors affecting the performance of LPG-Diesel dual-fuel engine” SAE - 1999-01-1123 March 99
- Prabhu Kumar G P Nagalingam B Gopalakrishnan K V “Experimental investigation on the performance and combustion characteristics of a LPG-Diesel dual-fuel engine” IX National Conference on IC engines and combustion 1985