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  • Synergic effects of EGR and VNT on exhaust emissions from turbocharged diesel engine

    • 摘要:

      In order to reduce the exhaust emission from a 4-cylinder turbocharged automotive diesel engine, the synergy of the variable nozzle turbocharger (VNT) and the exhaust gas recirculation (EGR) was studied experimentally to reveal the effects of the VNT on the EGR driving pressure difference and the achievable EGR rate. The test results showed that the developed EGR system reduces the engine NOx emission by 20%-47% without the penalty on the engine power output, the fuel economy and the exhaust smoke. The EGR rate could be increased by 2%-12% through regulating the difference between the gas pressure before the VNT and the air pressure after the VNT by means of VNT adjustment.

    • 作者:

      Tian Ling Wang;骏 李;Jun Hua Wu;Zhan Feng Wang

    • 刊名:

      Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition)

    • 在线出版时间:

      2006-7