吉林大学学报(工学版) ›› 2003, Vol. ›› Issue (4): 7-11.

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Control and characteristics of critical knock in S.I.Engine

GAO Qing, JIN Ying-ai, LI Ming, FANG Ying   

  1. College of Automotive Engineering, Jilin University, Changchun 130025, China
  • Received:2003-01-19

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Abstract: Control characteristics of critical knock of S.I.engine have been experimentally investigated,and optimal ignition advanced angle surface of engine controlled by a knock control unit has been obtained.Knock identification told of difference in knock intensity from cylinder to cylinder.Power output and fuel economy of engine under control of knock control unit were tested and results prove that performances can be improved when engine approaches critical knock conditions.It is found that adjustment inertia exists in adjusting process of the knock control system and its effect was discussed.

Key words: engine, knock control, engine performance

CLC Number: 

  • TK464
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