稀燃汽油机降低NOx排放的数值模拟

为降低产品研发过程的技术风险，缩短研发周期，数值模拟已经成为发动机研发过程中的重要环节和手段文章利用Simulink软件建立了一维稀燃汽油机LNT模型，同时利用STAR—CD软件建立了三维稀燃汽油机进气系统模型研究了稀燃汽油机进气系统的仿真与优化，并探究了稀燃吸附还原催化器LNT的性能数值模拟技术能够在发动机设计的整个过程中发挥重要的作用，是现代内燃机技术研究不可或缺的重要技术手段

Numerical Simulation for Reducing NOx Emission of Lean Burn Gasoline Engine

In order to reduce the teachnology risk during the product R＆D process and shorten R＆D cycle, numerical simulation has played an important role in lhe R＆D process of engines. The 1-D LNT model based on Simulink soflware and Ih,＇ characteristic of I,NT have been set up iu the paper. The intake system of lean burn gasoline engine was simulated and opiimized and the characterstic of LNT was researched. Computalional simulation plays a significant role in the engine design process and it well become a necessary tool for the advanced engine research.