Protection of piezo stack of a fuel injection valve for an internal combustion engine

A fuel injection valve has a piezo stack actuator (4, figure 1) located in a guide, a valve stem 8 connected to the piezo stack with closing spring 24, a valve housing 6 creating a annular gap 12 for high pressure fuel, a pressure equalising cylinder 11 with annular gap 18 creating a low pressure ar...

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Hauptverfasser:	GREGOR RENNER, JENS-PETER WOBBE, KARL-HEINZ HOFFMANN, FRIEDRICH WIRBELEIT
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF WEAPONS
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creator	GREGOR RENNER JENS-PETER WOBBE KARL-HEINZ HOFFMANN FRIEDRICH WIRBELEIT
description	A fuel injection valve has a piezo stack actuator (4, figure 1) located in a guide, a valve stem 8 connected to the piezo stack with closing spring 24, a valve housing 6 creating a annular gap 12 for high pressure fuel, a pressure equalising cylinder 11 with annular gap 18 creating a low pressure area behind it in which the piezo stack is placed and flow limiter 13 through which fuel is precisely metered to the combustion chamber. The fuel injector valve is located in an injector housing and fuel is supplied to the valve by an annular space between the injector housing and the guide for the piezo stack. Fuel pressure in gap 12 acting on the cylinder 11 and the flow limiter 13 may assist the closing of the valve due the ratio of surface areas on which the fluid acts.
format	Patent
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The fuel injector valve is located in an injector housing and fuel is supplied to the valve by an annular space between the injector housing and the guide for the piezo stack. Fuel pressure in gap 12 acting on the cylinder 11 and the flow limiter 13 may assist the closing of the valve due the ratio of surface areas on which the fluid acts.</description><edition>6</edition><language>eng</language><subject>BLASTING ; COMBUSTION ENGINES ; HEATING ; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS ; LIGHTING ; MECHANICAL ENGINEERING ; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF ; WEAPONS</subject><creationdate>1998</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=19980722&DB=EPODOC&CC=GB&NR=2321278A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,778,883,25551,76302</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19980722&DB=EPODOC&CC=GB&NR=2321278A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>GREGOR RENNER</creatorcontrib><creatorcontrib>JENS-PETER WOBBE</creatorcontrib><creatorcontrib>KARL-HEINZ HOFFMANN</creatorcontrib><creatorcontrib>FRIEDRICH WIRBELEIT</creatorcontrib><title>Protection of piezo stack of a fuel injection valve for an internal combustion engine</title><description>A fuel injection valve has a piezo stack actuator (4, figure 1) located in a guide, a valve stem 8 connected to the piezo stack with closing spring 24, a valve housing 6 creating a annular gap 12 for high pressure fuel, a pressure equalising cylinder 11 with annular gap 18 creating a low pressure area behind it in which the piezo stack is placed and flow limiter 13 through which fuel is precisely metered to the combustion chamber. The fuel injector valve is located in an injector housing and fuel is supplied to the valve by an annular space between the injector housing and the guide for the piezo stack. Fuel pressure in gap 12 acting on the cylinder 11 and the flow limiter 13 may assist the closing of the valve due the ratio of surface areas on which the fluid acts.</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>SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1998</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZAgNKMovSU0uyczPU8hPUyjITK3KVyguSUzOBnETFdJKU3MUMvOyoErKEnPKUhXS8osUEvOAwiWpRXmJOQrJ-blJpcVgBal56Zl5qTwMrGmJOcWpvFCam0HezTXE2UM3tSA_PrW4IDE5NS-1JN7dycjYyNDI3MLRmLAKAN2vOCI</recordid><startdate>19980722</startdate><enddate>19980722</enddate><creator>GREGOR RENNER</creator><creator>JENS-PETER WOBBE</creator><creator>KARL-HEINZ HOFFMANN</creator><creator>FRIEDRICH WIRBELEIT</creator><scope>EVB</scope></search><sort><creationdate>19980722</creationdate><title>Protection of piezo stack of a fuel injection valve for an internal combustion engine</title><author>GREGOR RENNER ; JENS-PETER WOBBE ; KARL-HEINZ HOFFMANN ; FRIEDRICH WIRBELEIT</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_GB2321278A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1998</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>SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>GREGOR RENNER</creatorcontrib><creatorcontrib>JENS-PETER WOBBE</creatorcontrib><creatorcontrib>KARL-HEINZ HOFFMANN</creatorcontrib><creatorcontrib>FRIEDRICH WIRBELEIT</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>GREGOR RENNER</au><au>JENS-PETER WOBBE</au><au>KARL-HEINZ HOFFMANN</au><au>FRIEDRICH WIRBELEIT</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Protection of piezo stack of a fuel injection valve for an internal combustion engine</title><date>1998-07-22</date><risdate>1998</risdate><abstract>A fuel injection valve has a piezo stack actuator (4, figure 1) located in a guide, a valve stem 8 connected to the piezo stack with closing spring 24, a valve housing 6 creating a annular gap 12 for high pressure fuel, a pressure equalising cylinder 11 with annular gap 18 creating a low pressure area behind it in which the piezo stack is placed and flow limiter 13 through which fuel is precisely metered to the combustion chamber. The fuel injector valve is located in an injector housing and fuel is supplied to the valve by an annular space between the injector housing and the guide for the piezo stack. Fuel pressure in gap 12 acting on the cylinder 11 and the flow limiter 13 may assist the closing of the valve due the ratio of surface areas on which the fluid acts.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record>
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subjects	BLASTING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF WEAPONS
title	Protection of piezo stack of a fuel injection valve for an internal combustion engine
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