Design of Hydrogen Enriched Compressed Natural Gas Engine Fuel System and Test Research

doi:10.3969/j.issn.1000-1093.2012.10.002

Abstract

Abstract: This paper put forward a device installed into the fuel system, which used the sliding electric arc to electrolyze the natural gas to make hydrogen and then blend them into the fuel pipe for final combustion. We could re-equip the compressed natural gas (CNG) engine to hydrogen enriched compressed natural gas (HCNG) engine easily. The test research of the engine emissions characteristics using different hydrogen-CNG ratios was conducted when the excess air ratios and the spark advance angles were different. The results show that HC and CO emissions of engine fueled with HCNG reduce when NOx emissions increase. The NOx emissions are reduced greatly with the increase of the excess air ratio or the decrease of the spark advance angle. Comparative experiments of the performance characteristics of engine burned with HCNG whose volume hydrogen-CNG ratio was 20% and CNG were conducted under wide open throttle operating conditions. The results show that the torque output is unchanged when 20%HCNG is burned compared with CNG engine, but the fuel consumption is reduced and the fuel economy is improved.

Key words: power machinery engineering, hydrogen enriched compressed natural gas, sliding electric arc, emission, hydrogen blending ratio

CLC Number:

TK437

ZHANG Chao-shan， XIONG Shu-sheng， REN Xiao-shuai， YAO Hong，. Design of Hydrogen Enriched Compressed Natural Gas Engine Fuel System and Test Research[J]. Acta Armamentarii, 2012, 33(10): 1162-1167.

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