Cycle-resolved measurements of the fuel concentration near a spark plug in a rotary engine using an in situ laser absorption method
Cycle-resolved measurements of the fuel concentration near a spark plug in a commercial rotary engine were performed. An in situ laser infrared (IR) absorption method was developed using a spark plug sensor and a 3.392-μm He–Ne laser as the light source. This wavelength coincided with the absorption...
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| Veröffentlicht in: | Proceedings of the Combustion Institute 2007, Vol.31 (2), p.3033-3040 |
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| container_title | Proceedings of the Combustion Institute |
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| creator | Kawahara, Nobuyuki Tomita, Eiji Hayashi, Kenta Tabata, Michihiko Iwai, Kouhei Kagawa, Ryoji |
| description | Cycle-resolved measurements of the fuel concentration near a spark plug in a commercial rotary engine were performed. An
in situ laser infrared (IR) absorption method was developed using a spark plug sensor and a 3.392-μm He–Ne laser as the light source. This wavelength coincided with the absorption line of hydrocarbons. The newly developed IR spark plug sensor had a higher signal-to-noise ratio than its previous version due to the optimization of its quartz lens and two optical fibers. The new sensor provided quantitative cycle-resolved fuel concentration measurements around the spark plug with a high temporal resolution. At lean preset air/fuel (
A/
F) ratios, fuel was mixed with the surrounding air gradually by the rotor motion in the plug hole of the rotary engine. Strong mixture inhomogeneities were measured during the compression stroke; the magnitude of these inhomogeneities decreased throughout the compression stroke. Cycle-resolved measurements were made to investigate the effects of the fuel concentration near the spark plug on the combustion characteristics of the commercial rotary engine. There was a strong correlation between the fuel concentration measured with the spark plug sensor and the combustion characteristics during the initial combustion period, which occurred faster when conditions were slightly richer than stoichiometric near the spark plug. The indicated mean effective pressure (IMEP) was slightly related to the
A/
F ratio near the spark plug. It was possible to measure the cycle-resolved
A/
F ratio near the spark plug and investigate its cycle-to-cycle fluctuations to achieve stable operation using the newly developed spark plug sensor. |
| doi_str_mv | 10.1016/j.proci.2006.08.088 |
| format | Article |
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in situ laser infrared (IR) absorption method was developed using a spark plug sensor and a 3.392-μm He–Ne laser as the light source. This wavelength coincided with the absorption line of hydrocarbons. The newly developed IR spark plug sensor had a higher signal-to-noise ratio than its previous version due to the optimization of its quartz lens and two optical fibers. The new sensor provided quantitative cycle-resolved fuel concentration measurements around the spark plug with a high temporal resolution. At lean preset air/fuel (
A/
F) ratios, fuel was mixed with the surrounding air gradually by the rotor motion in the plug hole of the rotary engine. Strong mixture inhomogeneities were measured during the compression stroke; the magnitude of these inhomogeneities decreased throughout the compression stroke. Cycle-resolved measurements were made to investigate the effects of the fuel concentration near the spark plug on the combustion characteristics of the commercial rotary engine. There was a strong correlation between the fuel concentration measured with the spark plug sensor and the combustion characteristics during the initial combustion period, which occurred faster when conditions were slightly richer than stoichiometric near the spark plug. The indicated mean effective pressure (IMEP) was slightly related to the
A/
F ratio near the spark plug. It was possible to measure the cycle-resolved
A/
F ratio near the spark plug and investigate its cycle-to-cycle fluctuations to achieve stable operation using the newly developed spark plug sensor.</description><identifier>ISSN: 1540-7489</identifier><identifier>EISSN: 1873-2704</identifier><identifier>DOI: 10.1016/j.proci.2006.08.088</identifier><language>eng</language><publisher>Elsevier Inc</publisher><subject>Air/fuel ratio ; Combustion ; Compressive strength ; Cycle-to-cycle fluctuations ; Fuels ; In situ infrared absorption method ; Inhomogeneities ; Lasers ; Mixture formation process ; Rotary engines ; Sensors ; Spark ignition Wankel rotary engine ; Spark plugs</subject><ispartof>Proceedings of the Combustion Institute, 2007, Vol.31 (2), p.3033-3040</ispartof><rights>2006 The Combustion Institute</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c336t-2190932caf7419abb71232badc6c8610dca04d7a618ece29eb6d1ab721485463</citedby><cites>FETCH-LOGICAL-c336t-2190932caf7419abb71232badc6c8610dca04d7a618ece29eb6d1ab721485463</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.proci.2006.08.088$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,4024,27923,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Kawahara, Nobuyuki</creatorcontrib><creatorcontrib>Tomita, Eiji</creatorcontrib><creatorcontrib>Hayashi, Kenta</creatorcontrib><creatorcontrib>Tabata, Michihiko</creatorcontrib><creatorcontrib>Iwai, Kouhei</creatorcontrib><creatorcontrib>Kagawa, Ryoji</creatorcontrib><title>Cycle-resolved measurements of the fuel concentration near a spark plug in a rotary engine using an in situ laser absorption method</title><title>Proceedings of the Combustion Institute</title><description>Cycle-resolved measurements of the fuel concentration near a spark plug in a commercial rotary engine were performed. An
in situ laser infrared (IR) absorption method was developed using a spark plug sensor and a 3.392-μm He–Ne laser as the light source. This wavelength coincided with the absorption line of hydrocarbons. The newly developed IR spark plug sensor had a higher signal-to-noise ratio than its previous version due to the optimization of its quartz lens and two optical fibers. The new sensor provided quantitative cycle-resolved fuel concentration measurements around the spark plug with a high temporal resolution. At lean preset air/fuel (
A/
F) ratios, fuel was mixed with the surrounding air gradually by the rotor motion in the plug hole of the rotary engine. Strong mixture inhomogeneities were measured during the compression stroke; the magnitude of these inhomogeneities decreased throughout the compression stroke. Cycle-resolved measurements were made to investigate the effects of the fuel concentration near the spark plug on the combustion characteristics of the commercial rotary engine. There was a strong correlation between the fuel concentration measured with the spark plug sensor and the combustion characteristics during the initial combustion period, which occurred faster when conditions were slightly richer than stoichiometric near the spark plug. The indicated mean effective pressure (IMEP) was slightly related to the
A/
F ratio near the spark plug. It was possible to measure the cycle-resolved
A/
F ratio near the spark plug and investigate its cycle-to-cycle fluctuations to achieve stable operation using the newly developed spark plug sensor.</description><subject>Air/fuel ratio</subject><subject>Combustion</subject><subject>Compressive strength</subject><subject>Cycle-to-cycle fluctuations</subject><subject>Fuels</subject><subject>In situ infrared absorption method</subject><subject>Inhomogeneities</subject><subject>Lasers</subject><subject>Mixture formation process</subject><subject>Rotary engines</subject><subject>Sensors</subject><subject>Spark ignition Wankel rotary engine</subject><subject>Spark plugs</subject><issn>1540-7489</issn><issn>1873-2704</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNp9kD1PwzAQhiMEEqXwC1g8sqTYceI4AwOq-JKQWNgtx7m0LokdfA5SZ_44LmVGOuk-31e6J8uuGV0xysTtbjUFb-yqoFSsqEwhT7IFkzXPi5qWp6muSprXpWzOswvEHaW8prxaZN_rvRkgD4B--IKOjKBxDjCCi0h8T-IWSD_DQIx3Jg2DjtY74kAHoglOOnyQaZg3xLrUBx912BNwG-uAzGjdhmh32KGNMxk0QpK16MP0azNC3PruMjvr9YBw9ZeX2fvjw_v6OX99e3pZ37_mhnMR84I1tOGF0X1dska3bc0KXrS6M8JIwWhnNC27WgsmwUDRQCs6ptu6YKWsSsGX2c3RNrH6nAGjGi0aGAbtwM-omEiGlWxElU758dQEjxigV1OwY3pNMaoOxNVO_RJXB-KKyhQyqe6OKkhPfFkICo2FhK2zAUxUnbf_6n8ANxiNjw</recordid><startdate>2007</startdate><enddate>2007</enddate><creator>Kawahara, Nobuyuki</creator><creator>Tomita, Eiji</creator><creator>Hayashi, Kenta</creator><creator>Tabata, Michihiko</creator><creator>Iwai, Kouhei</creator><creator>Kagawa, Ryoji</creator><general>Elsevier Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>H8D</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>2007</creationdate><title>Cycle-resolved measurements of the fuel concentration near a spark plug in a rotary engine using an in situ laser absorption method</title><author>Kawahara, Nobuyuki ; Tomita, Eiji ; Hayashi, Kenta ; Tabata, Michihiko ; Iwai, Kouhei ; Kagawa, Ryoji</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c336t-2190932caf7419abb71232badc6c8610dca04d7a618ece29eb6d1ab721485463</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Air/fuel ratio</topic><topic>Combustion</topic><topic>Compressive strength</topic><topic>Cycle-to-cycle fluctuations</topic><topic>Fuels</topic><topic>In situ infrared absorption method</topic><topic>Inhomogeneities</topic><topic>Lasers</topic><topic>Mixture formation process</topic><topic>Rotary engines</topic><topic>Sensors</topic><topic>Spark ignition Wankel rotary engine</topic><topic>Spark plugs</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kawahara, Nobuyuki</creatorcontrib><creatorcontrib>Tomita, Eiji</creatorcontrib><creatorcontrib>Hayashi, Kenta</creatorcontrib><creatorcontrib>Tabata, Michihiko</creatorcontrib><creatorcontrib>Iwai, Kouhei</creatorcontrib><creatorcontrib>Kagawa, Ryoji</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Proceedings of the Combustion Institute</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kawahara, Nobuyuki</au><au>Tomita, Eiji</au><au>Hayashi, Kenta</au><au>Tabata, Michihiko</au><au>Iwai, Kouhei</au><au>Kagawa, Ryoji</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Cycle-resolved measurements of the fuel concentration near a spark plug in a rotary engine using an in situ laser absorption method</atitle><jtitle>Proceedings of the Combustion Institute</jtitle><date>2007</date><risdate>2007</risdate><volume>31</volume><issue>2</issue><spage>3033</spage><epage>3040</epage><pages>3033-3040</pages><issn>1540-7489</issn><eissn>1873-2704</eissn><abstract>Cycle-resolved measurements of the fuel concentration near a spark plug in a commercial rotary engine were performed. An
in situ laser infrared (IR) absorption method was developed using a spark plug sensor and a 3.392-μm He–Ne laser as the light source. This wavelength coincided with the absorption line of hydrocarbons. The newly developed IR spark plug sensor had a higher signal-to-noise ratio than its previous version due to the optimization of its quartz lens and two optical fibers. The new sensor provided quantitative cycle-resolved fuel concentration measurements around the spark plug with a high temporal resolution. At lean preset air/fuel (
A/
F) ratios, fuel was mixed with the surrounding air gradually by the rotor motion in the plug hole of the rotary engine. Strong mixture inhomogeneities were measured during the compression stroke; the magnitude of these inhomogeneities decreased throughout the compression stroke. Cycle-resolved measurements were made to investigate the effects of the fuel concentration near the spark plug on the combustion characteristics of the commercial rotary engine. There was a strong correlation between the fuel concentration measured with the spark plug sensor and the combustion characteristics during the initial combustion period, which occurred faster when conditions were slightly richer than stoichiometric near the spark plug. The indicated mean effective pressure (IMEP) was slightly related to the
A/
F ratio near the spark plug. It was possible to measure the cycle-resolved
A/
F ratio near the spark plug and investigate its cycle-to-cycle fluctuations to achieve stable operation using the newly developed spark plug sensor.</abstract><pub>Elsevier Inc</pub><doi>10.1016/j.proci.2006.08.088</doi><tpages>8</tpages></addata></record> |
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| ispartof | Proceedings of the Combustion Institute, 2007, Vol.31 (2), p.3033-3040 |
| issn | 1540-7489 1873-2704 |
| language | eng |
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| source | Access via ScienceDirect (Elsevier) |
| subjects | Air/fuel ratio Combustion Compressive strength Cycle-to-cycle fluctuations Fuels In situ infrared absorption method Inhomogeneities Lasers Mixture formation process Rotary engines Sensors Spark ignition Wankel rotary engine Spark plugs |
| title | Cycle-resolved measurements of the fuel concentration near a spark plug in a rotary engine using an in situ laser absorption method |
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