High-pressure fuel pump
In a conventional high-pressure fuel pump, the interference fit part between a plunger and a retainer comes loose with time due to environmental factors and this reduces the clearance between the retainer and a tappet more than necessity, resulting in increase in the contact face pressure between th...
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| creator | ONOSE TORU HASHIDA MINORU SUGANAMI MASAYUKI YAMAUCHI HIDEAKI TAKAHASHI SUNAO ISHIGE KAZUICHI YAMADA HIROYUKI |
| description | In a conventional high-pressure fuel pump, the interference fit part between a plunger and a retainer comes loose with time due to environmental factors and this reduces the clearance between the retainer and a tappet more than necessity, resulting in increase in the contact face pressure between the plunger and a cylinder when a side force acts on the plunger, which causes seizure between the plunger and the cylinder. In this invention, a protrusion protruding toward the tappet is provided around the through-hole for press-fitting the plunger, the through-hole provided in the center portion of the retainer. Since the clearance between the retainer and the tappet can sufficiently be kept even if the joint between the retainer and the plunger comes loose, the seizure between the plunger and the cylinder and the breakage of the plunger are less likely to occur even if the side force acts on the retainer. |
| format | Patent |
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In this invention, a protrusion protruding toward the tappet is provided around the through-hole for press-fitting the plunger, the through-hole provided in the center portion of the retainer. Since the clearance between the retainer and the tappet can sufficiently be kept even if the joint between the retainer and the plunger comes loose, the seizure between the plunger and the cylinder and the breakage of the plunger are less likely to occur even if the side force acts on the retainer.</description><language>chi ; eng</language><subject>BLASTING ; COMBUSTION ENGINES ; HEATING ; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS ; LIGHTING ; MECHANICAL ENGINEERING ; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS ; PUMPS ; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF ; WEAPONS</subject><creationdate>2012</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=20120919&DB=EPODOC&CC=CN&NR=102686869A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20120919&DB=EPODOC&CC=CN&NR=102686869A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>ONOSE TORU</creatorcontrib><creatorcontrib>HASHIDA MINORU</creatorcontrib><creatorcontrib>SUGANAMI MASAYUKI</creatorcontrib><creatorcontrib>YAMAUCHI HIDEAKI</creatorcontrib><creatorcontrib>TAKAHASHI SUNAO</creatorcontrib><creatorcontrib>ISHIGE KAZUICHI</creatorcontrib><creatorcontrib>YAMADA HIROYUKI</creatorcontrib><title>High-pressure fuel pump</title><description>In a conventional high-pressure fuel pump, the interference fit part between a plunger and a retainer comes loose with time due to environmental factors and this reduces the clearance between the retainer and a tappet more than necessity, resulting in increase in the contact face pressure between the plunger and a cylinder when a side force acts on the plunger, which causes seizure between the plunger and the cylinder. In this invention, a protrusion protruding toward the tappet is provided around the through-hole for press-fitting the plunger, the through-hole provided in the center portion of the retainer. Since the clearance between the retainer and the tappet can sufficiently be kept even if the joint between the retainer and the plunger comes loose, the seizure between the plunger and the cylinder and the breakage of the plunger are less likely to occur even if the side force acts on the retainer.</description><subject>BLASTING</subject><subject>COMBUSTION ENGINES</subject><subject>HEATING</subject><subject>HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS</subject><subject>LIGHTING</subject><subject>MECHANICAL ENGINEERING</subject><subject>POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS</subject><subject>PUMPS</subject><subject>PUMPS FOR LIQUIDS OR ELASTIC FLUIDS</subject><subject>SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2012</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZBD3yEzP0C0oSi0uLi1KVUgrTc1RKCjNLeBhYE1LzClO5YXS3AyKbq4hzh66qQX58anFBYnJqXmpJfHOfoYGRmYWQGjpaEyMGgDFpiHu</recordid><startdate>20120919</startdate><enddate>20120919</enddate><creator>ONOSE TORU</creator><creator>HASHIDA MINORU</creator><creator>SUGANAMI MASAYUKI</creator><creator>YAMAUCHI HIDEAKI</creator><creator>TAKAHASHI SUNAO</creator><creator>ISHIGE KAZUICHI</creator><creator>YAMADA HIROYUKI</creator><scope>EVB</scope></search><sort><creationdate>20120919</creationdate><title>High-pressure fuel pump</title><author>ONOSE TORU ; HASHIDA MINORU ; SUGANAMI MASAYUKI ; YAMAUCHI HIDEAKI ; TAKAHASHI SUNAO ; ISHIGE KAZUICHI ; YAMADA HIROYUKI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN102686869A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2012</creationdate><topic>BLASTING</topic><topic>COMBUSTION ENGINES</topic><topic>HEATING</topic><topic>HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS</topic><topic>LIGHTING</topic><topic>MECHANICAL ENGINEERING</topic><topic>POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS</topic><topic>PUMPS</topic><topic>PUMPS FOR LIQUIDS OR ELASTIC FLUIDS</topic><topic>SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>ONOSE TORU</creatorcontrib><creatorcontrib>HASHIDA MINORU</creatorcontrib><creatorcontrib>SUGANAMI MASAYUKI</creatorcontrib><creatorcontrib>YAMAUCHI HIDEAKI</creatorcontrib><creatorcontrib>TAKAHASHI SUNAO</creatorcontrib><creatorcontrib>ISHIGE KAZUICHI</creatorcontrib><creatorcontrib>YAMADA HIROYUKI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>ONOSE TORU</au><au>HASHIDA MINORU</au><au>SUGANAMI MASAYUKI</au><au>YAMAUCHI HIDEAKI</au><au>TAKAHASHI SUNAO</au><au>ISHIGE KAZUICHI</au><au>YAMADA HIROYUKI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>High-pressure fuel pump</title><date>2012-09-19</date><risdate>2012</risdate><abstract>In a conventional high-pressure fuel pump, the interference fit part between a plunger and a retainer comes loose with time due to environmental factors and this reduces the clearance between the retainer and a tappet more than necessity, resulting in increase in the contact face pressure between the plunger and a cylinder when a side force acts on the plunger, which causes seizure between the plunger and the cylinder. In this invention, a protrusion protruding toward the tappet is provided around the through-hole for press-fitting the plunger, the through-hole provided in the center portion of the retainer. Since the clearance between the retainer and the tappet can sufficiently be kept even if the joint between the retainer and the plunger comes loose, the seizure between the plunger and the cylinder and the breakage of the plunger are less likely to occur even if the side force acts on the retainer.</abstract><oa>free_for_read</oa></addata></record> |
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| language | chi ; eng |
| recordid | cdi_epo_espacenet_CN102686869A |
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| subjects | BLASTING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF WEAPONS |
| title | High-pressure fuel pump |
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