Study on Modified Natural Gas Engine Considering NOx Emission
Existing natural gas engines are modified from gasoline or diesel engine.But there are different combustion and emission mechansim for natural gas from gasoline and diesel.The NOx emssion of modified natural gas engine is higher remarkably than gasoline and diesel.There was also a conflict between NOx emission and engine power of modified natural gas engine.This paper discusses influence facters of NOx emission, including compression ratio, excess air coefficient, spark advanced timing, valve overlap angle, turbocharge, EGR rate and exhaust treatment.NOx emission characteristics of existing modified engine were studied.NOx emission and engine power of natural gas engine modified from gasoline and diesel engine were compared.Then some sugesstion are brought out for descreasing NOx emission of modified engine and designing low NOx emission natural gas engine.
natural gas modified engine NOx emission
Chen Fan
Jiangmen Polytechnic, Mechtronic Department, Jiangmen, China, 529090
国际会议
湖北荆州
英文
371-374
2013-05-18（万方平台首次上网日期，不代表论文的发表时间）