• Title/Summary/Keyword: 최대출력을 낼 수 있는 희박연소

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Evaluation of Combustion Stability of Idling Speed State (LBT연소를 통한 Idling 운전시의 연소안정성 평가)

  • 이중순;이종승;김진영;정성식;하종률
    • Transactions of the Korean Society of Automotive Engineers
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    • v.7 no.5
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    • pp.66-72
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    • 1999
  • It is necessary to discuss lightening engine parts and reducing the friction of sliding parts to improve fuel consumption and combustion stability at idling condition. Lean best torque combustion which produce maximum power at a lean air-fuel ratio is effective for the reduction of exhaust gas emission and the improvement of fuel consumption. Accordingly, this study deals with the expansion of lean combustible limitation, the combustion stability and the reduction of idle speed through the analysis of combustion characteristics on the base of the control technique of precise air-fuel ratio because it does not need to maximum power at idling condition. The idle speed is increased proportional to ISC(Idle Speed Control) duty ratio. On the other hand the idle speed decreased by lean air-fuel ratio. The COV in engine speed is stable within maximum two percent up to 17.6 mixture ratio by the control of ISC duty ratio.

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