吉林大学学报(工学版) ›› 2004, Vol. ›› Issue (3): 337-341.

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EGR system for automotive diesel engine

LIU Zhongchang1, ZHU Changji1, ZHANG Zhendong2   

  1. 1. College of Automotive Engineering, Jilin University, Changchun 130022, China;
    2. College of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
  • Received:2004-01-18 Online:2004-07-01

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Abstract: To reduce NOx emission of an automotive diesel engine, an EGR(Exhaust Gas Recirculation) system was developed.The control system hardware of EGR and its control strategy were presented. In this system,an intake air throttle valve and an EGR flow valve are controlled by a single chip processor.The test results show that optimized EGR ratio from 0～30% can be realized by this EGR system.The EGR system can greatly reduce NOx emission while keeping the particulate emission at the same level,but the HC and CO emissions deteriorate to some extent in the same test conditions.The brake specific fuel consumption measured by the ECE R49 test cycle also decreased compared to baseline engine.

Key words: internal-combustion engine engineering, exhaust emission, EGR, diesel engine

CLC Number: 

  • TK421.5
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