The influence of EGR valve opening on a diesel engine performance
WANG Rui
CHENG Xiaozhang
GUAN Jinbiao
Abstract：In order to improve the diesel engine performance,the bench test of a diesel engine under different loads and EGR valve openings is carried out to study the influence of exhaust gas recirculation technology on the engine performance.The results show that under different loads,the increase of EGR valve opening reduces the NOx emission and increases the carbon emission.The greater the engine load,the greater the peak pressure.The increase of EGR valve opening reduces the engine peak pressure.The engine load has a greater influence on the fuel consumption rate,the fuel consumption rate decreases with the increase of EGR valve opening under low load,the EGR valve has little effect on the fuel consumption rate under medium load,the fuel consumption rate increases with the increase of EGR valve opening under high load.In order to achieve a balance between the fuel economy and emission performance of the engine,the EGR valve opening can be appropriately increased under medium and low loads of the engine,and the EGR opening should be appropriately reduced under high load.
Keywords：EGR valve openingfuel economyNOx emissionpeak pressure
Publication Date：2024-12-28
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：4( 89-92 )