内燃机活塞环润滑及动力学特性数值分析

《内燃机活塞环润滑及动力学特性数值分析》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、ÕM5(²<(²¤¥ÆØ©´<3“•e?1ïÄóŠÚïĤJ,Ø©¥AO±I5Ú—ƒ?,Ø©¥Ø•¹Ù¦<®²uL½>LïĤJ,•Ø•¹•¼U9ŒÆ½Ù¦˜ÅƽyÖ¦^Lá.†·˜ÓóŠÓ“éïĤ‰?Ûzþ®3Ø©¥Š²(`²¿L«¿.ÆØ©Šö¶:iFÏ:cFÆØ©‡¦^ÇÖÆØ©Šö)U9ŒÆk'3!¦^ÆØ©5½.AÇU9ŒÆŒ±òÆØ©ܽܩSN?k'êâ¥?1u¢,¿æ^K

2、Ø©E<‡Ú^.£—ÆØ©3)—·^Ç`²¤ÆØ©Šö¶:“¶:iFÏ:cFiFÏ:cF¥©Á‡±,.Ò†ª8hÅ•1N§^ꊕ{ÏLMATLAB?§¦)¹l‚-h@n‘dw.§Ù¥X앧¦)^k•©{Úk•{ü«•{"©ÛL¡o÷Ý!¹l‚סpÝÚh@Ý(ëêédwGK•§‰ÑØÓëêe•hþÝé'§±9A‡•¶=ehØåÚhþÝ©Ùœ¹"Óž©Ûk•©{Úk•{ˆgØ¿é'ü«•{`":"(JL²§(ëêédwkwÍK•¶3‰õÀ§þŽ:NChþÝ•§hØå•Œ

3、¶3‡$1L§¥§à¸>̇Ñy3‰õÀ§þŽ:NC¶k•©{Úk•{3¦)Ta¯KžˆgäkØÓ`³"'…c:¹l‚;dw;hþÝ;ꊕ{AbstractForacertaintypeofinlinesixcylindersengine,thethree-dimensionallu-bricationmodelwassolvedbynumericalmethodsthroughMATLABprogram.FDMandFEMwereusedtosolveReynoldsequation.Thein uenceofstructuralp

4、arametersonlubricationwasanalyzed,suchassurfaceroughness,pistonringsbarrelsurfaceheightandcylinderlinercirculardegree.Thecomparisonofmini-maloillmthicknesswasgivenunderdierentparameters,anddistributionsofoillmpressureandoillmthicknesswereshowedunderseveralcrankangledegree

5、s.Atthesametime,theerrorestimationandthemeritsandmesmeristofthetwomethodswasstudied.Itwasfoundthatthestructuralparametershavesignicantin uenceonlubricationproperty.MinimaloillmthicknessreachestheminimumvaluenearbypowerstrokeBDC.Meanwhiletheoillmpressureachievesthemax-imum.

6、ConvexpeakcontactmainlyappearsinBDCinthewholeprocess.FDMandFEMhavetheirdierentadvanceondierentquestions.KeyWords:PistonRing;Lubrication;OilFilmThickness;NumericalMethods8¹1˜Ùcó..................................11.1¯Kµ................................11.2©óŠ................

7、................31.3âŠL.................................31Ùk'Ä:•£.............................62.1k•©{Úk•{{0......................62.1.1k•©{..........................62.1.2k•{............................62.2Sobolev˜mÄnØ.........................91nÙhdw¯KêŠ..............

8、.........133.1‘X앧..............................133.2hþÝ•§.......