Extension of the Lean Limit of Gasoline Engines Under Part L oad by U sing Hot Surface Assisted Spark Ignition (HSASI)
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- 本サイト上にてダウンロード・閲覧可
- 形態
- 価格
- 一般価格(税込)：￥1,100 会員価格(税込)：￥880
- 文献番号
- 20229051
- 文献・情報種別
- SETC
No.2022-32-0051
- 掲載ページ
- 1-11(Total 11 p)
- 発行年月
- 2022年 10月
- 出版社
- (公社)自動車技術会
- 言語
- 英語
- イベント
- SETC2022
書誌事項
| 著者（英） | 1) Sascha Holzberger, 2) Maurice Kettner, 3) Roland Kirchberger |
|---|---|
| 勤務先（英） | 1) University of Applied Sciences Karlsruhe, 2) Graz University of Technology, 3) Graz University of Technology |
| 抄録（英） | Charge dilution by lean-burn is one way to increase the efficiency of spark ignition engines while reducing NOx emissions. This work focuses on increasing the flammability of lean mixtures inside a passive pre-chamber spark plug by elevating its temperature with the help of a controllable hot surface integrated into the pre-chamber. Thus, an extension of the lean limit under part load is aimed for. A pre-chamber spark plug prototype with an integrated, controllable glow plug was developed, called Hot Surface Assisted Spark Ignition (HSASI). Experimental investigations were conducted on a single-cylinder engine at the Karlsruhe University of Applied Sciences. Operating modes with an active glow plug (HSASI) and a non-active glow plug were compared. The lean limit for both operation modes were determined under part load. NOx, CO and THC emissions were measured for different air-fuel equivalence ratios λ. The lean limit is extended by more than 0.1 in λ at low loads with HSASI operation. At constant λ, lower CO and THC emissions are achieved under HSASI operation than in operation with a non-active glow plug. NOx-emissions are higher with an active glow plug at lower λ and align with higher λ. HSASI operation shows higher combustion stability, as combustion in the pre-chamber is accelerated and flame quenching in the pre-chamber is reduced. 翻訳 |
