Research on Self-Ignition Close to Idling Engine Speed in Gasoline Engine


The research discussed in this paper studied the abnormal combustion which caused a noise of self-ignition. The cause is because the upper part of a piston is impacted to the sleeve on the thrust side, when delayed self-ignition occurs. When engine conditions are low rotation, high load, and high temperature, a noise of self-ignition is generated. On the condition, in order to avoid a knock, delayed ignition timing is required. As a result, the probability that delayed self-ignition will be generated increases. Finally, the probability that a low rotation self-noise of ignition will be generated also increases.高吸気温時等におけるガソリンエンジンのアイドル回転近傍での自着火に起因する異音は商品性を大きく損なう.本研究では自着火音が発生する燃焼と条件の特徴をノック音との比較により明らかにした.また自着火音の発生メカニズムが自着火による急激な筒内圧増加が生じた場合のピストンの挙動によることを明らかにした.


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  • Accession Number: 01676201
  • Record Type: Publication
  • Source Agency: Japan Science and Technology Agency (JST)
  • Files: TRIS, JSTAGE
  • Created Date: Jan 31 2018 3:15PM