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- OKADA Rikiya
- Keio University
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- YASUTAKE Yuki
- Keio University
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- MIYOKAWA Shinji
- Keio University
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- TOMIDOKORO Takuya
- Keio University
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- YOKOMORI Takeshi
- Keio University
Bibliographic Information
- Other Title
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- リーンバーンSIエンジンにおけるノッキング検出精度向上に関する研究
Description
<p>The purpose of this study was to improve the accuracy of knock detection for lean burn SI engines. In this study, we conducted an experiment to observe autoignition in an engine cylinder using a borescope and a high-speed camera under an air excess ratio of 2.1. In addition, the resonance frequency of each vibration mode by knocking and the knock intensity were also calculated from the in-cylinder pressure history. Autoignition was optically observed in all cycles with a knock intensity of more than 20 kPa or more, and in some cycles with that of less than 20 kPa. We compared the vibration caused by combustion and it caused by autoignition. As a result, by distinguishing between the vibration caused by combustion and it caused by autoignition using window functions, a knocking cycle that could not be detected by the conventional index was detected.</p>
Journal
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- The Proceedings of Conference of Kanto Branch
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The Proceedings of Conference of Kanto Branch 2021.27 (0), 10A16-, 2021
The Japan Society of Mechanical Engineers
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Keywords
Details 詳細情報について
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- CRID
- 1390852482512957824
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- NII Article ID
- 130008091994
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- ISSN
- 24242691
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed