Study of knock control in small gasoline engines by multi-dimensional simulation

Kenjiro Nakama, Jin Kusaka, Yasuhiro Daisho

研究成果: Conference article査読

6 被引用数 (Scopus)

抄録

To suppress knock in small gasoline engines, the coolant flow of a single-cylinder engine was improved by using two methods: a multi-dimensional knock prediction method combining a Flamelet model with a simple chemical kinetics model, and a method for predicting combustion chamber wall temperature based on a thermal fluid calculation that coupled the engine coolant and the engine structure (engine head, cylinder block, and head gasket). Through these calculations as well as the measurement of wall temperatures and the analysis of combustion by experiments, the effects of wall temperature distribution and consequent unburnt gas temperature distribution on knock onset timing and location were examined. Furthermore, a study was made to develop a method for cooling the head side, which was more effective to suppress knock: the head gasket shape was modified to change the coolant flow and thereby improve the distribution of wall temperatures on the head side.

本文言語English
ジャーナルSAE Technical Papers
DOI
出版ステータスPublished - 2006 11月 13
イベントSAE 2006 Small Engine Technology Conference and Exhibition, SETC 2006 - San Antonio, United States
継続期間: 2006 11月 132006 11月 16

ASJC Scopus subject areas

  • 自動車工学
  • 安全性、リスク、信頼性、品質管理
  • 汚染
  • 産業および生産工学

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