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Summary & Details

Improving Thermal Efficiency of an SI Engine by Avoiding Knock Occurrence

火花点火機関のノック回避による高効率化の研究

Delivery: Available on this site

Format: PDF

Price: Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880

Publication code: 20114579

Paper/Info type: JSAE Transaction

Vol.42 No.4

Pages: 853-858(Total 6 p)

Date of publication: Jul 2011

Publisher: JSAE

Language: Japanese

Detailed Information

Category(J)	研究論文 Translation
Category(E)	Research Paper
Author(J)	1) 野村一敏, 2) 田中慶太, 3) 酒井俊, 4) 草鹿仁, 5) 大聖泰弘
Author(E)	1) Kazutoshi Nomura, 2) Keita Tanaka, 3) Shun Sakai, 4) Jin Kusaka, 5) Yasuhiro Daisho
Affiliation(J)	1) 早稲田大学, 2) 早稲田大学, 3) 早稲田大学, 4) 早稲田大学, 5) 早稲田大学
Abstract(J)	ガソリン機関では，燃費向上に有効なMBT運転と高圧縮比化の実現はノッキングによって制限される．本研究では，エンジン燃焼・性能予測ツールに簡易反応モデルと燃焼室壁面温度を予測する伝熱モデルを組み込んだノッキング予測モデルを構築し，ノッキングを抑制しながら燃費を改善する運転条件を追究した． Translation
Abstract(E)	A two-zone engine combustion model has been developed to determine engine design and operating parameters enabling to improve thermal efficiency by avoiding the occurrence of knock. This model is combined with modified Shell's knock prediction scheme for unburned zone reactions as well as with a heat loss model predicting the combustion chamber surface temperature. Simulation results indicate that Exhaust gas recirculation is very effective to improve thermal efficiency avoiding knock at high compression ratios or advanced ignition timings.

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