Dynamic Friction in Cam/Tappet Lubrication
The valve train is an engine part which experiences severe lubrication and special effort is required to lubricate it effectively. We have investigated the role of oil composition with respect to the friction properties of a cam/tappet contact using a specially designed instrument. This tribometer d...
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| Veröffentlicht in: | SAE transactions 1985-01, Vol.94, p.224-231 |
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| container_title | SAE transactions |
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| creator | van Helden, A. K. van der Meer, R. J. van Staaden, J. J. van Gelderen, E. |
| description | The valve train is an engine part which experiences severe lubrication and special effort is required to lubricate it effectively. We have investigated the role of oil composition with respect to the friction properties of a cam/tappet contact using a specially designed instrument. This tribometer determines friction during cam revolution by analysing time-dependent cam-shaft torque measurements. The friction coefficient depends on the position of the cam relative to the tappet, as predicted by the kinematics of the system.Boundary lubrication is predominant in positions close to top lift, whereas milder lubrication conditions occur at small lift. Data on some pure mineral oils and friction modified oils are presented. |
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Data on some pure mineral oils and friction modified oils are presented.</description><identifier>ISSN: 0096-736X</identifier><identifier>EISSN: 2577-1531</identifier><language>eng</language><publisher>New York, NY: Society of Automotive Engineers, Inc</publisher><subject>Applied sciences ; Engines and turbines ; Exact sciences and technology ; Internal combustion engines: gazoline engine, diesel engines, etc ; Mechanical engineering. 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J.</creatorcontrib><creatorcontrib>van Gelderen, E.</creatorcontrib><title>Dynamic Friction in Cam/Tappet Lubrication</title><title>SAE transactions</title><description>The valve train is an engine part which experiences severe lubrication and special effort is required to lubricate it effectively. We have investigated the role of oil composition with respect to the friction properties of a cam/tappet contact using a specially designed instrument. This tribometer determines friction during cam revolution by analysing time-dependent cam-shaft torque measurements. The friction coefficient depends on the position of the cam relative to the tappet, as predicted by the kinematics of the system.Boundary lubrication is predominant in positions close to top lift, whereas milder lubrication conditions occur at small lift. Data on some pure mineral oils and friction modified oils are presented.</description><subject>Applied sciences</subject><subject>Engines and turbines</subject><subject>Exact sciences and technology</subject><subject>Internal combustion engines: gazoline engine, diesel engines, etc</subject><subject>Mechanical engineering. Machine design</subject><issn>0096-736X</issn><issn>2577-1531</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1985</creationdate><recordtype>article</recordtype><recordid>eNo9j01LxDAURYM4YO34E4QuXAnBl-9kKdVRoeCmC3fDS6aFlGmnJHUx_97KiKu7OJdzuVek4MoYypRg16QAcJoaob9uyG3OA4BgyvCCPL6cJxxjqHYphiWepipOVY3jU4vz3C1V8-1XgL9kSzY9HnN395claXevbf1Om8-3j_q5oYNiinqPNnCpQEp-6JRiHIxk0jhnvQ_AnA4etIS-szroHnsQ0gRtlVWHDiGIkjxctDPmgMc-4RRi3s8pjpjOe-MMd-upktxfakNeTukfSyn1uqfFD_8VR0Y</recordid><startdate>19850101</startdate><enddate>19850101</enddate><creator>van Helden, A. K.</creator><creator>van der Meer, R. J.</creator><creator>van Staaden, J. J.</creator><creator>van Gelderen, E.</creator><general>Society of Automotive Engineers, Inc</general><general>Society of Automotive Engineers</general><scope>IQODW</scope></search><sort><creationdate>19850101</creationdate><title>Dynamic Friction in Cam/Tappet Lubrication</title><author>van Helden, A. K. ; van der Meer, R. J. ; van Staaden, J. J. ; van Gelderen, E.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-j515-bba8c2450442de5512074147998bbc0196cb0640fe86c6faf0347c68585dea0c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1985</creationdate><topic>Applied sciences</topic><topic>Engines and turbines</topic><topic>Exact sciences and technology</topic><topic>Internal combustion engines: gazoline engine, diesel engines, etc</topic><topic>Mechanical engineering. Machine design</topic><toplevel>online_resources</toplevel><creatorcontrib>van Helden, A. K.</creatorcontrib><creatorcontrib>van der Meer, R. J.</creatorcontrib><creatorcontrib>van Staaden, J. J.</creatorcontrib><creatorcontrib>van Gelderen, E.</creatorcontrib><collection>Pascal-Francis</collection><jtitle>SAE transactions</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>van Helden, A. K.</au><au>van der Meer, R. J.</au><au>van Staaden, J. J.</au><au>van Gelderen, E.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Dynamic Friction in Cam/Tappet Lubrication</atitle><jtitle>SAE transactions</jtitle><date>1985-01-01</date><risdate>1985</risdate><volume>94</volume><spage>224</spage><epage>231</epage><pages>224-231</pages><issn>0096-736X</issn><eissn>2577-1531</eissn><abstract>The valve train is an engine part which experiences severe lubrication and special effort is required to lubricate it effectively. We have investigated the role of oil composition with respect to the friction properties of a cam/tappet contact using a specially designed instrument. This tribometer determines friction during cam revolution by analysing time-dependent cam-shaft torque measurements. The friction coefficient depends on the position of the cam relative to the tappet, as predicted by the kinematics of the system.Boundary lubrication is predominant in positions close to top lift, whereas milder lubrication conditions occur at small lift. Data on some pure mineral oils and friction modified oils are presented.</abstract><cop>New York, NY</cop><pub>Society of Automotive Engineers, Inc</pub><tpages>8</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0096-736X |
| ispartof | SAE transactions, 1985-01, Vol.94, p.224-231 |
| issn | 0096-736X 2577-1531 |
| language | eng |
| recordid | cdi_pascalfrancis_primary_7972915 |
| source | Jstor Complete Legacy |
| subjects | Applied sciences Engines and turbines Exact sciences and technology Internal combustion engines: gazoline engine, diesel engines, etc Mechanical engineering. Machine design |
| title | Dynamic Friction in Cam/Tappet Lubrication |
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