A modified diesel engine for natural gas operation: Performance and emission tests

Chedthawut Poompipatpong and Kraipat Cheenkachorn

Energy, 2011, vol. 36, issue 12, 6862-6866

Abstract: A diesel engine was modified for natural gas operation to optimize performance using gaseous fuel. A variation of combustion ratios (CR) including 9.0:1, 9.5:1, 10.0:1 and 10.5:1 was utilized to evaluate engine performance and emissions from the same engine over the engine speeds between 1000 and 4000 rpm. Tested engine performance parameters include brake torque, brake power, specific fuel consumption (SFC) and brake thermal efficiency. Emissions tests recorded total hydrocarbon (THC), nitrogen oxides (NOx) and carbon monoxide (CO). The results showed that a CR of 9.5:1 had the highest thermal efficiency and the lowest SFC while a CR of 10:1 showed a high torque at low speed. THC emissions were directly proportional to the CR. NOx emissions increased with increasing CR and then declined after a CR of 10:1.

Keywords: Modified diesel engine; Natural gas; Compression ratio; Emission (search for similar items in EconPapers)
Date: 2011
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (12)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:36:y:2011:i:12:p:6862-6866

DOI: 10.1016/j.energy.2011.10.009

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