An Analysis of the Volumetric Efficiency Characteristics of 4-Stroke Cycle Engines Using the Mean Inlet Mach Number Mim
In order to obtain the limiting volumetric efficiency curve, the relationships between volumetric efficiency and engine speed were investigated on three engines by varying through wide limits the effective angle areas of the inlet valves. It was found that the mean inlet Mach number Mim introduced b...
Gespeichert in:
| Veröffentlicht in: | SAE transactions 1979-01, Vol.88, p.1756-1782 |
|---|---|
| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 1782 |
|---|---|
| container_issue | |
| container_start_page | 1756 |
| container_title | SAE transactions |
| container_volume | 88 |
| creator | Fukutani, Itaru Watanabe, Eiichi |
| description | In order to obtain the limiting volumetric efficiency curve, the relationships between volumetric efficiency and engine speed were investigated on three engines by varying through wide limits the effective angle areas of the inlet valves. It was found that the mean inlet Mach number Mim introduced by the authors showed the characteristics of volumetric efficiency better than the inlet Mach index Ms widely used and when Mim approached Mim=0.5, the flow around the inlet valve became critical causing inlet choking; which made the volumetric efficiency decrease hyperbolically with an increase in engine speed. These phenomena were also observed in the test results of a Wankel type rotary engine. |
| format | Article |
| fullrecord | <record><control><sourceid>jstor</sourceid><recordid>TN_cdi_jstor_primary_44658180</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><jstor_id>44658180</jstor_id><sourcerecordid>44658180</sourcerecordid><originalsourceid>FETCH-jstor_primary_446581803</originalsourceid><addsrcrecordid>eNqFjMuKwkAQAIfFhY3ufsJC_0BgYp4eJUT0EC8-8CazQydpnUyW6RHJ3wvi3VMdqqgPEczTPA-jNI4mIpBykYV5nJ2-xJT5ImUcpfk8EPelhaVVZmRiGBrwHcJxMLcevSMNVdOQJrR6hLJTTmmPjtiTfsZJuPNuuCKUozYIlW3JIsOBybbPU43KwsYa9FAr3cH21v-hg5r6b_HZKMP48-JM_K6qfbkOL-wHd_531Cs3npMkS4uokPE7_wADnUj-</addsrcrecordid><sourcetype>Publisher</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>An Analysis of the Volumetric Efficiency Characteristics of 4-Stroke Cycle Engines Using the Mean Inlet Mach Number Mim</title><source>Jstor Complete Legacy</source><creator>Fukutani, Itaru ; Watanabe, Eiichi</creator><creatorcontrib>Fukutani, Itaru ; Watanabe, Eiichi</creatorcontrib><description>In order to obtain the limiting volumetric efficiency curve, the relationships between volumetric efficiency and engine speed were investigated on three engines by varying through wide limits the effective angle areas of the inlet valves. It was found that the mean inlet Mach number Mim introduced by the authors showed the characteristics of volumetric efficiency better than the inlet Mach index Ms widely used and when Mim approached Mim=0.5, the flow around the inlet valve became critical causing inlet choking; which made the volumetric efficiency decrease hyperbolically with an increase in engine speed. These phenomena were also observed in the test results of a Wankel type rotary engine.</description><identifier>ISSN: 0096-736X</identifier><identifier>EISSN: 2577-1531</identifier><language>eng</language><publisher>SOCIETY OF AUTOMOTIVE ENGINEERS, INC</publisher><subject>Atmospheric pressure ; Cylinders ; Efficiency metrics ; Engines ; Flow velocity ; Inlet flow ; Inlet pressure ; Inlets ; Mach number ; Volumetric efficiency</subject><ispartof>SAE transactions, 1979-01, Vol.88, p.1756-1782</ispartof><rights>Copyright © Society of Automotive Engineers, Inc., 1980</rights><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/44658180$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/44658180$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,776,780,799,57992,58225</link.rule.ids></links><search><creatorcontrib>Fukutani, Itaru</creatorcontrib><creatorcontrib>Watanabe, Eiichi</creatorcontrib><title>An Analysis of the Volumetric Efficiency Characteristics of 4-Stroke Cycle Engines Using the Mean Inlet Mach Number Mim</title><title>SAE transactions</title><description>In order to obtain the limiting volumetric efficiency curve, the relationships between volumetric efficiency and engine speed were investigated on three engines by varying through wide limits the effective angle areas of the inlet valves. It was found that the mean inlet Mach number Mim introduced by the authors showed the characteristics of volumetric efficiency better than the inlet Mach index Ms widely used and when Mim approached Mim=0.5, the flow around the inlet valve became critical causing inlet choking; which made the volumetric efficiency decrease hyperbolically with an increase in engine speed. These phenomena were also observed in the test results of a Wankel type rotary engine.</description><subject>Atmospheric pressure</subject><subject>Cylinders</subject><subject>Efficiency metrics</subject><subject>Engines</subject><subject>Flow velocity</subject><subject>Inlet flow</subject><subject>Inlet pressure</subject><subject>Inlets</subject><subject>Mach number</subject><subject>Volumetric efficiency</subject><issn>0096-736X</issn><issn>2577-1531</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1979</creationdate><recordtype>article</recordtype><sourceid/><recordid>eNqFjMuKwkAQAIfFhY3ufsJC_0BgYp4eJUT0EC8-8CazQydpnUyW6RHJ3wvi3VMdqqgPEczTPA-jNI4mIpBykYV5nJ2-xJT5ImUcpfk8EPelhaVVZmRiGBrwHcJxMLcevSMNVdOQJrR6hLJTTmmPjtiTfsZJuPNuuCKUozYIlW3JIsOBybbPU43KwsYa9FAr3cH21v-hg5r6b_HZKMP48-JM_K6qfbkOL-wHd_531Cs3npMkS4uokPE7_wADnUj-</recordid><startdate>19790101</startdate><enddate>19790101</enddate><creator>Fukutani, Itaru</creator><creator>Watanabe, Eiichi</creator><general>SOCIETY OF AUTOMOTIVE ENGINEERS, INC</general><scope/></search><sort><creationdate>19790101</creationdate><title>An Analysis of the Volumetric Efficiency Characteristics of 4-Stroke Cycle Engines Using the Mean Inlet Mach Number Mim</title><author>Fukutani, Itaru ; Watanabe, Eiichi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-jstor_primary_446581803</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1979</creationdate><topic>Atmospheric pressure</topic><topic>Cylinders</topic><topic>Efficiency metrics</topic><topic>Engines</topic><topic>Flow velocity</topic><topic>Inlet flow</topic><topic>Inlet pressure</topic><topic>Inlets</topic><topic>Mach number</topic><topic>Volumetric efficiency</topic><toplevel>online_resources</toplevel><creatorcontrib>Fukutani, Itaru</creatorcontrib><creatorcontrib>Watanabe, Eiichi</creatorcontrib><jtitle>SAE transactions</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fukutani, Itaru</au><au>Watanabe, Eiichi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>An Analysis of the Volumetric Efficiency Characteristics of 4-Stroke Cycle Engines Using the Mean Inlet Mach Number Mim</atitle><jtitle>SAE transactions</jtitle><date>1979-01-01</date><risdate>1979</risdate><volume>88</volume><spage>1756</spage><epage>1782</epage><pages>1756-1782</pages><issn>0096-736X</issn><eissn>2577-1531</eissn><abstract>In order to obtain the limiting volumetric efficiency curve, the relationships between volumetric efficiency and engine speed were investigated on three engines by varying through wide limits the effective angle areas of the inlet valves. It was found that the mean inlet Mach number Mim introduced by the authors showed the characteristics of volumetric efficiency better than the inlet Mach index Ms widely used and when Mim approached Mim=0.5, the flow around the inlet valve became critical causing inlet choking; which made the volumetric efficiency decrease hyperbolically with an increase in engine speed. These phenomena were also observed in the test results of a Wankel type rotary engine.</abstract><pub>SOCIETY OF AUTOMOTIVE ENGINEERS, INC</pub></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0096-736X |
| ispartof | SAE transactions, 1979-01, Vol.88, p.1756-1782 |
| issn | 0096-736X 2577-1531 |
| language | eng |
| recordid | cdi_jstor_primary_44658180 |
| source | Jstor Complete Legacy |
| subjects | Atmospheric pressure Cylinders Efficiency metrics Engines Flow velocity Inlet flow Inlet pressure Inlets Mach number Volumetric efficiency |
| title | An Analysis of the Volumetric Efficiency Characteristics of 4-Stroke Cycle Engines Using the Mean Inlet Mach Number Mim |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-09T15%3A35%3A12IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-jstor&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=An%20Analysis%20of%20the%20Volumetric%20Efficiency%20Characteristics%20of%204-Stroke%20Cycle%20Engines%20Using%20the%20Mean%20Inlet%20Mach%20Number%20Mim&rft.jtitle=SAE%20transactions&rft.au=Fukutani,%20Itaru&rft.date=1979-01-01&rft.volume=88&rft.spage=1756&rft.epage=1782&rft.pages=1756-1782&rft.issn=0096-736X&rft.eissn=2577-1531&rft_id=info:doi/&rft_dat=%3Cjstor%3E44658180%3C/jstor%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rft_jstor_id=44658180&rfr_iscdi=true |