Effect of fuel-air mixture dilution on knock intensity (2nd report: Auto-ignition conditions in end gas preventing intense pressure oscillation)
This paper studies the condition of reducing knock intensity which is the pressure oscillation initiated by auto-ignition of the end gas. The knock intensity is thought to be decreased by suppressing the reaction rate of auto-ignition. In this study, the effect of the mixture dilution which decrease...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | Japanese |
| Published: |
The Japan Society of Mechanical Engineers
2017-06-01
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| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/83/850/83_17-00044/_pdf/-char/en |
| _version_ | 1828099344472997888 |
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| author | Mitsuaki OHTOMO Tetsunori SUZUOKI Seiji YAMAMOTO Hiroshi MIYAGAWA |
| author_facet | Mitsuaki OHTOMO Tetsunori SUZUOKI Seiji YAMAMOTO Hiroshi MIYAGAWA |
| author_sort | Mitsuaki OHTOMO |
| collection | DOAJ |
| description | This paper studies the condition of reducing knock intensity which is the pressure oscillation initiated by auto-ignition of the end gas. The knock intensity is thought to be decreased by suppressing the reaction rate of auto-ignition. In this study, the effect of the mixture dilution which decreases the reaction rate on the knock intensity was investigated by using a spark ignition engine. In the case of low dilution, knock was observed when the auto-ignition of the end gas occurred. When the dilution ratio was over 30%, there was the condition that the knock did not occur even if the end gas auto-ignited. The combustion with low knock intensity was observed in either case that dilution gas was inert gas or air. The knock intensity was shown as a function of the maximum temperature and the maximum pressure which affected the reaction rate although the knock intensity was affected by the composition of the mixture, load, ignition timing, auto-ignition timing of the end gas and heat release quantity of the auto-ignited mixture. |
| first_indexed | 2024-04-11T08:14:34Z |
| format | Article |
| id | doaj.art-2bcc4d95ec00440e8ec80b5b0f3a0d17 |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-11T08:14:34Z |
| publishDate | 2017-06-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-2bcc4d95ec00440e8ec80b5b0f3a0d172022-12-22T04:35:11ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612017-06-018385017-0004417-0004410.1299/transjsme.17-00044transjsmeEffect of fuel-air mixture dilution on knock intensity (2nd report: Auto-ignition conditions in end gas preventing intense pressure oscillation)Mitsuaki OHTOMO0Tetsunori SUZUOKI1Seiji YAMAMOTO2Hiroshi MIYAGAWA3Toyota Central R&D Labs, Inc.Toyota Central R&D Labs, Inc.Toyota Central R&D Labs, Inc.Toyota Central R&D Labs, Inc.This paper studies the condition of reducing knock intensity which is the pressure oscillation initiated by auto-ignition of the end gas. The knock intensity is thought to be decreased by suppressing the reaction rate of auto-ignition. In this study, the effect of the mixture dilution which decreases the reaction rate on the knock intensity was investigated by using a spark ignition engine. In the case of low dilution, knock was observed when the auto-ignition of the end gas occurred. When the dilution ratio was over 30%, there was the condition that the knock did not occur even if the end gas auto-ignited. The combustion with low knock intensity was observed in either case that dilution gas was inert gas or air. The knock intensity was shown as a function of the maximum temperature and the maximum pressure which affected the reaction rate although the knock intensity was affected by the composition of the mixture, load, ignition timing, auto-ignition timing of the end gas and heat release quantity of the auto-ignited mixture.https://www.jstage.jst.go.jp/article/transjsme/83/850/83_17-00044/_pdf/-char/enignitionknockinternal combustion enginedilutionpressure oscillation |
| spellingShingle | Mitsuaki OHTOMO Tetsunori SUZUOKI Seiji YAMAMOTO Hiroshi MIYAGAWA Effect of fuel-air mixture dilution on knock intensity (2nd report: Auto-ignition conditions in end gas preventing intense pressure oscillation) Nihon Kikai Gakkai ronbunshu ignition knock internal combustion engine dilution pressure oscillation |
| title | Effect of fuel-air mixture dilution on knock intensity (2nd report: Auto-ignition conditions in end gas preventing intense pressure oscillation) |
| title_full | Effect of fuel-air mixture dilution on knock intensity (2nd report: Auto-ignition conditions in end gas preventing intense pressure oscillation) |
| title_fullStr | Effect of fuel-air mixture dilution on knock intensity (2nd report: Auto-ignition conditions in end gas preventing intense pressure oscillation) |
| title_full_unstemmed | Effect of fuel-air mixture dilution on knock intensity (2nd report: Auto-ignition conditions in end gas preventing intense pressure oscillation) |
| title_short | Effect of fuel-air mixture dilution on knock intensity (2nd report: Auto-ignition conditions in end gas preventing intense pressure oscillation) |
| title_sort | effect of fuel air mixture dilution on knock intensity 2nd report auto ignition conditions in end gas preventing intense pressure oscillation |
| topic | ignition knock internal combustion engine dilution pressure oscillation |
| url | https://www.jstage.jst.go.jp/article/transjsme/83/850/83_17-00044/_pdf/-char/en |
| work_keys_str_mv | AT mitsuakiohtomo effectoffuelairmixturedilutiononknockintensity2ndreportautoignitionconditionsinendgaspreventingintensepressureoscillation AT tetsunorisuzuoki effectoffuelairmixturedilutiononknockintensity2ndreportautoignitionconditionsinendgaspreventingintensepressureoscillation AT seijiyamamoto effectoffuelairmixturedilutiononknockintensity2ndreportautoignitionconditionsinendgaspreventingintensepressureoscillation AT hiroshimiyagawa effectoffuelairmixturedilutiononknockintensity2ndreportautoignitionconditionsinendgaspreventingintensepressureoscillation |