Study on ignition and combustion characteristics of prechamber ignition using rapid compression and expansion machine
The prechamber combustion characteristics were studied using a rapid compression and expansion machine (RCEM) to improve the efficiency of cogeneration natural gas engines. The torch flames generated by a prechamber were used to investigate the effect that a prechamber has on the main combustion. In...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | Japanese |
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The Japan Society of Mechanical Engineers
2021-02-01
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| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/87/895/87_20-00380/_pdf/-char/en |
| _version_ | 1828125779005800448 |
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| author | Daisuke MORI Satoshi WAKU Riku YAMASHITA Fumio SHIMADA Kimitoshi TANOUE Yasuo MORIYOSHI |
| author_facet | Daisuke MORI Satoshi WAKU Riku YAMASHITA Fumio SHIMADA Kimitoshi TANOUE Yasuo MORIYOSHI |
| author_sort | Daisuke MORI |
| collection | DOAJ |
| description | The prechamber combustion characteristics were studied using a rapid compression and expansion machine (RCEM) to improve the efficiency of cogeneration natural gas engines. The torch flames generated by a prechamber were used to investigate the effect that a prechamber has on the main combustion. In our previous study, we observed the correlation between the torch flame and the main flame (which is a so-called “prechamber combustion”). In this study, the effects of prechamber parameters such as initial pressure and nozzle diameter of injection holes, equivalence ratio on prechamber combustion characteristics were investigated in detail. Especially, by comparing the combustion characteristics of methane, which is the main component of natural gas, and propane, which is a representative of small-volume components, the effects of fuel types on the ignition and combustion characteristics of pre-chamber ignition system were investigated to elucidate of the effect of fuel property. In conclusions, regarding the mechanism of prechamber-ignition combustion, it was inferred that the jet erupted from the prechamber did not directly propagate in the main chamber but included the "ignition phenomenon" of the main chamber due to the jet. In addition, under the experimental conditions of this study, it was found that the ignition delay time and the combustion period can be predicted by simple calculation, which can lead to the important guideline for the pre-chamber design. |
| first_indexed | 2024-04-11T15:25:55Z |
| format | Article |
| id | doaj.art-76b003316bf04373a5c606c13ffc762b |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-11T15:25:55Z |
| publishDate | 2021-02-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-76b003316bf04373a5c606c13ffc762b2022-12-22T04:16:15ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612021-02-018789520-0038020-0038010.1299/transjsme.20-00380transjsmeStudy on ignition and combustion characteristics of prechamber ignition using rapid compression and expansion machineDaisuke MORI0Satoshi WAKU1Riku YAMASHITA2Fumio SHIMADA3Kimitoshi TANOUE4Yasuo MORIYOSHI5Oita Univ. Dept. of Mechanical and Energy systems engineeringOita Univ. Dept. of Mechanical and Energy systems engineeringOita Univ. Dept. of Mechanical and Energy systems engineeringOita Univ. Dept. of Mechanical and Energy systems engineeringOita Univ. Dept. of Mechanical and Energy systems engineeringChiba Univ. Graduate School of EngineeringThe prechamber combustion characteristics were studied using a rapid compression and expansion machine (RCEM) to improve the efficiency of cogeneration natural gas engines. The torch flames generated by a prechamber were used to investigate the effect that a prechamber has on the main combustion. In our previous study, we observed the correlation between the torch flame and the main flame (which is a so-called “prechamber combustion”). In this study, the effects of prechamber parameters such as initial pressure and nozzle diameter of injection holes, equivalence ratio on prechamber combustion characteristics were investigated in detail. Especially, by comparing the combustion characteristics of methane, which is the main component of natural gas, and propane, which is a representative of small-volume components, the effects of fuel types on the ignition and combustion characteristics of pre-chamber ignition system were investigated to elucidate of the effect of fuel property. In conclusions, regarding the mechanism of prechamber-ignition combustion, it was inferred that the jet erupted from the prechamber did not directly propagate in the main chamber but included the "ignition phenomenon" of the main chamber due to the jet. In addition, under the experimental conditions of this study, it was found that the ignition delay time and the combustion period can be predicted by simple calculation, which can lead to the important guideline for the pre-chamber design.https://www.jstage.jst.go.jp/article/transjsme/87/895/87_20-00380/_pdf/-char/enprechamberrcemignitionjet flamegas engineshadowgraph method |
| spellingShingle | Daisuke MORI Satoshi WAKU Riku YAMASHITA Fumio SHIMADA Kimitoshi TANOUE Yasuo MORIYOSHI Study on ignition and combustion characteristics of prechamber ignition using rapid compression and expansion machine Nihon Kikai Gakkai ronbunshu prechamber rcem ignition jet flame gas engine shadowgraph method |
| title | Study on ignition and combustion characteristics of prechamber ignition using rapid compression and expansion machine |
| title_full | Study on ignition and combustion characteristics of prechamber ignition using rapid compression and expansion machine |
| title_fullStr | Study on ignition and combustion characteristics of prechamber ignition using rapid compression and expansion machine |
| title_full_unstemmed | Study on ignition and combustion characteristics of prechamber ignition using rapid compression and expansion machine |
| title_short | Study on ignition and combustion characteristics of prechamber ignition using rapid compression and expansion machine |
| title_sort | study on ignition and combustion characteristics of prechamber ignition using rapid compression and expansion machine |
| topic | prechamber rcem ignition jet flame gas engine shadowgraph method |
| url | https://www.jstage.jst.go.jp/article/transjsme/87/895/87_20-00380/_pdf/-char/en |
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