INTERNAL COMBUSTION ENGINE CRANKSHAFT MAIN BEARING
PROBLEM TO BE SOLVED: To provide an internal combustion engine crankshaft main bearing having an excellent foreign matter discharge function while reducing oil leakage.SOLUTION: According to the present invention, a main bearing 19 constituted by a pair of semi-cylindrical bearings 17 and 18 is prov...
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| creator | ISHIGO OSAMU TOMITA YUICHI YAMADA MOTOHEI |
| description | PROBLEM TO BE SOLVED: To provide an internal combustion engine crankshaft main bearing having an excellent foreign matter discharge function while reducing oil leakage.SOLUTION: According to the present invention, a main bearing 19 constituted by a pair of semi-cylindrical bearings 17 and 18 is provided. An oil groove 17a extending in a circumferential direction and arranged so that a center of an axial width matches that of an inlet opening 26 of a lubricant path 10a formed in a journal part 10 of a crankshaft is provided on an inner circumferential surface 17S of one semi-circular bearing 17. The oil groove 17a does not extend up to an axial groove 24A formed in a joint portion between the pair of semi-cylindrical bearings 17a and 18, so that a divided inner circumferential surface 17S' extends between a circumferential end portion 17E of the oil groove 17a and a circumferential end surface 17A of the semi-cylindrical bearing 17. A circumferential length L1 of the divided inner circumferential surface 17S' is smaller than a circumferential length L2 of the inlet opening 26, so that the oil groove 17a is communicable with the axial groove 24A via the inlet opening 26.
【課題】油の漏れ量を低減しつつ優れた異物排出機能を有する内燃機関のクランク軸用主軸受を提供すること。【解決手段】本発明によれば、一対の半円筒形軸受１７、１８から構成される主軸受１９が提供される。一方の半円筒形軸受１７の内周面１７Ｓ上には、円周方向に延びる油溝１７ａであって、軸線方向幅の中央が、クランク軸のジャーナル部１０に形成された潤滑油路１０ａの入口開口２６の中心と整合するように配置される油溝１７ａが設けられる。油溝１７ａは、一対の半円筒形軸受１７、１８の接合部に形成された軸線方向溝２４Ａまで延びておらず、したがって油溝１７ａの円周方向端部１７Ｅと半円筒形軸受１７の円周方向端面１７Ａとの間には分離内周面１７Ｓ'が延びている。分離内周面１７Ｓ'の円周方向長さＬ１は入口開口２６の円周方向長さＬ２より小さく、したがって油溝１７ａは入口開口２６を介して軸線方向溝２４Ａと連通可能である。【選択図】図５ |
| format | Patent |
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【課題】油の漏れ量を低減しつつ優れた異物排出機能を有する内燃機関のクランク軸用主軸受を提供すること。【解決手段】本発明によれば、一対の半円筒形軸受１７、１８から構成される主軸受１９が提供される。一方の半円筒形軸受１７の内周面１７Ｓ上には、円周方向に延びる油溝１７ａであって、軸線方向幅の中央が、クランク軸のジャーナル部１０に形成された潤滑油路１０ａの入口開口２６の中心と整合するように配置される油溝１７ａが設けられる。油溝１７ａは、一対の半円筒形軸受１７、１８の接合部に形成された軸線方向溝２４Ａまで延びておらず、したがって油溝１７ａの円周方向端部１７Ｅと半円筒形軸受１７の円周方向端面１７Ａとの間には分離内周面１７Ｓ'が延びている。分離内周面１７Ｓ'の円周方向長さＬ１は入口開口２６の円周方向長さＬ２より小さく、したがって油溝１７ａは入口開口２６を介して軸線方向溝２４Ａと連通可能である。【選択図】図５</description><language>eng ; jpn</language><subject>BEARINGS ; BLASTING ; ELEMENTS OR CRANKSHAFT MECHANISMS ; ENGINEERING ELEMENTS AND UNITS ; FLEXIBLE SHAFTS ; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS ; HEATING ; LIGHTING ; MECHANICAL ENGINEERING ; ROTARY BODIES OTHER THAN GEARING ELEMENTS ; SHAFTS ; THERMAL INSULATION IN GENERAL ; WEAPONS</subject><creationdate>2014</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20141106&DB=EPODOC&CC=JP&NR=2014209036A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76516</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20141106&DB=EPODOC&CC=JP&NR=2014209036A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>ISHIGO OSAMU</creatorcontrib><creatorcontrib>TOMITA YUICHI</creatorcontrib><creatorcontrib>YAMADA MOTOHEI</creatorcontrib><title>INTERNAL COMBUSTION ENGINE CRANKSHAFT MAIN BEARING</title><description>PROBLEM TO BE SOLVED: To provide an internal combustion engine crankshaft main bearing having an excellent foreign matter discharge function while reducing oil leakage.SOLUTION: According to the present invention, a main bearing 19 constituted by a pair of semi-cylindrical bearings 17 and 18 is provided. An oil groove 17a extending in a circumferential direction and arranged so that a center of an axial width matches that of an inlet opening 26 of a lubricant path 10a formed in a journal part 10 of a crankshaft is provided on an inner circumferential surface 17S of one semi-circular bearing 17. The oil groove 17a does not extend up to an axial groove 24A formed in a joint portion between the pair of semi-cylindrical bearings 17a and 18, so that a divided inner circumferential surface 17S' extends between a circumferential end portion 17E of the oil groove 17a and a circumferential end surface 17A of the semi-cylindrical bearing 17. A circumferential length L1 of the divided inner circumferential surface 17S' is smaller than a circumferential length L2 of the inlet opening 26, so that the oil groove 17a is communicable with the axial groove 24A via the inlet opening 26.
【課題】油の漏れ量を低減しつつ優れた異物排出機能を有する内燃機関のクランク軸用主軸受を提供すること。【解決手段】本発明によれば、一対の半円筒形軸受１７、１８から構成される主軸受１９が提供される。一方の半円筒形軸受１７の内周面１７Ｓ上には、円周方向に延びる油溝１７ａであって、軸線方向幅の中央が、クランク軸のジャーナル部１０に形成された潤滑油路１０ａの入口開口２６の中心と整合するように配置される油溝１７ａが設けられる。油溝１７ａは、一対の半円筒形軸受１７、１８の接合部に形成された軸線方向溝２４Ａまで延びておらず、したがって油溝１７ａの円周方向端部１７Ｅと半円筒形軸受１７の円周方向端面１７Ａとの間には分離内周面１７Ｓ'が延びている。分離内周面１７Ｓ'の円周方向長さＬ１は入口開口２６の円周方向長さＬ２より小さく、したがって油溝１７ａは入口開口２６を介して軸線方向溝２４Ａと連通可能である。【選択図】図５</description><subject>BEARINGS</subject><subject>BLASTING</subject><subject>ELEMENTS OR CRANKSHAFT MECHANISMS</subject><subject>ENGINEERING ELEMENTS AND UNITS</subject><subject>FLEXIBLE SHAFTS</subject><subject>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</subject><subject>HEATING</subject><subject>LIGHTING</subject><subject>MECHANICAL ENGINEERING</subject><subject>ROTARY BODIES OTHER THAN GEARING ELEMENTS</subject><subject>SHAFTS</subject><subject>THERMAL INSULATION IN GENERAL</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2014</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDDy9AtxDfJz9FFw9vd1Cg0O8fT3U3D1c_f0c1VwDnL08w72cHQLUfB19PRTcHJ1DPL0c-dhYE1LzClO5YXS3AxKbq4hzh66qQX58anFBYnJqXmpJfFeAUYGhiZGBpYGxmaOxkQpAgDJ0Sc7</recordid><startdate>20141106</startdate><enddate>20141106</enddate><creator>ISHIGO OSAMU</creator><creator>TOMITA YUICHI</creator><creator>YAMADA MOTOHEI</creator><scope>EVB</scope></search><sort><creationdate>20141106</creationdate><title>INTERNAL COMBUSTION ENGINE CRANKSHAFT MAIN BEARING</title><author>ISHIGO OSAMU ; TOMITA YUICHI ; YAMADA MOTOHEI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2014209036A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; jpn</language><creationdate>2014</creationdate><topic>BEARINGS</topic><topic>BLASTING</topic><topic>ELEMENTS OR CRANKSHAFT MECHANISMS</topic><topic>ENGINEERING ELEMENTS AND UNITS</topic><topic>FLEXIBLE SHAFTS</topic><topic>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</topic><topic>HEATING</topic><topic>LIGHTING</topic><topic>MECHANICAL ENGINEERING</topic><topic>ROTARY BODIES OTHER THAN GEARING ELEMENTS</topic><topic>SHAFTS</topic><topic>THERMAL INSULATION IN GENERAL</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>ISHIGO OSAMU</creatorcontrib><creatorcontrib>TOMITA YUICHI</creatorcontrib><creatorcontrib>YAMADA MOTOHEI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>ISHIGO OSAMU</au><au>TOMITA YUICHI</au><au>YAMADA MOTOHEI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>INTERNAL COMBUSTION ENGINE CRANKSHAFT MAIN BEARING</title><date>2014-11-06</date><risdate>2014</risdate><abstract>PROBLEM TO BE SOLVED: To provide an internal combustion engine crankshaft main bearing having an excellent foreign matter discharge function while reducing oil leakage.SOLUTION: According to the present invention, a main bearing 19 constituted by a pair of semi-cylindrical bearings 17 and 18 is provided. An oil groove 17a extending in a circumferential direction and arranged so that a center of an axial width matches that of an inlet opening 26 of a lubricant path 10a formed in a journal part 10 of a crankshaft is provided on an inner circumferential surface 17S of one semi-circular bearing 17. The oil groove 17a does not extend up to an axial groove 24A formed in a joint portion between the pair of semi-cylindrical bearings 17a and 18, so that a divided inner circumferential surface 17S' extends between a circumferential end portion 17E of the oil groove 17a and a circumferential end surface 17A of the semi-cylindrical bearing 17. A circumferential length L1 of the divided inner circumferential surface 17S' is smaller than a circumferential length L2 of the inlet opening 26, so that the oil groove 17a is communicable with the axial groove 24A via the inlet opening 26.
【課題】油の漏れ量を低減しつつ優れた異物排出機能を有する内燃機関のクランク軸用主軸受を提供すること。【解決手段】本発明によれば、一対の半円筒形軸受１７、１８から構成される主軸受１９が提供される。一方の半円筒形軸受１７の内周面１７Ｓ上には、円周方向に延びる油溝１７ａであって、軸線方向幅の中央が、クランク軸のジャーナル部１０に形成された潤滑油路１０ａの入口開口２６の中心と整合するように配置される油溝１７ａが設けられる。油溝１７ａは、一対の半円筒形軸受１７、１８の接合部に形成された軸線方向溝２４Ａまで延びておらず、したがって油溝１７ａの円周方向端部１７Ｅと半円筒形軸受１７の円周方向端面１７Ａとの間には分離内周面１７Ｓ'が延びている。分離内周面１７Ｓ'の円周方向長さＬ１は入口開口２６の円周方向長さＬ２より小さく、したがって油溝１７ａは入口開口２６を介して軸線方向溝２４Ａと連通可能である。【選択図】図５</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BEARINGS BLASTING ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS THERMAL INSULATION IN GENERAL WEAPONS |
| title | INTERNAL COMBUSTION ENGINE CRANKSHAFT MAIN BEARING |
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