Numerical Simulation on the Effect of Pilot Injection on Combustion and NOx Emission Characteristics of Light-Vehicle Diesel Engine
Based on KIVA-3V code, the numerical simulation on the combustion process and NOx emission of a lightvehicle dlesel engine is carried out, using different injection strategies. The results show that compared with the traditional single injection, pilot injection can decline the ignition delay period and the maximum combustion temperature, which leads to the reduction of the NOX emission;as pre-injection mass increases, NOx emission increases. Fuel of pilot injection must be sufficient for preheating the combustion chamber. Otherwise, NOx emission is deteriorated in the condition of excessive amount of pilot injection. For the light-vehicle diesel engine investigated in this paper, when the proportion of pre-injection mass to cycle-injection mass is 2.5％ and the angle between pilot injection to main injection is 15℃A, the NOX emission declines nearly 21.8％.
diesel engine numerical simulation KIVA-3 V pilot injection emission
Liu Shengji Jia Hekun Yin bifeng Xu zhenwei Guan tao
School of Automobile & Traffic Engineering, Jiangsu University, Zhenjiang 212013, China
国际会议
2010 International Conference on Digital Manufacturing and Automation(2010 数字制造与自动化国际会议 ICDMA 2010)
长沙
英文
38-41
2010-12-18（万方平台首次上网日期，不代表论文的发表时间）