Development of Knocking Mitigation Technology Using Late Injection Strategy


To meet upcoming new emission standards in various automotive markets advanced combustion technology is required which will mitigate engine knocking and fuel adhesion to cylinder chamber walls. Further, use of high compression ratio and downsized engines promotes the possibility of knock occurrence. In this study, a concept of stoichiometric-partial stratified mixture formation was developed. This stoichiometric-partial stratified mixture formation was achieved by controlling small injection amount using direct injection system. WLTC, RDEといった高負荷使用頻度の増加と厳格化する排気規制に着眼すると,高負荷条件におけるノッキング抑制とPN低減の両立が必要となる.本研究は,前記両立すべき課題を解決する燃焼コンセプトとして,直噴を活用した圧縮行程噴射によるストイキ部分成層混合気形成コンセプトを立案した.


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  • Accession Number: 01673412
  • Record Type: Publication
  • Source Agency: Japan Science and Technology Agency (JST)
  • Files: TRIS, JSTAGE
  • Created Date: May 15 2018 3:03PM