Valve assembly and fluid injector for a combustion engine

The invention relates to a valve assembly (2) for a fluid injector (1) for an internal combustion engine. The valve assembly (2) comprises a valve body with a valve recess (5), a central longitudinal axis (7), and a first axial end and a second axial end with respect to the central longitudinal axis...

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Hauptverfasser:	Gestri, Luca, Saliu, Marco, Matteucci, Luca, Canesi, Nicola, Agresta, Antonio
Format:	Patent
Sprache:	eng ; fre ; ger
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	Gestri, Luca Saliu, Marco Matteucci, Luca Canesi, Nicola Agresta, Antonio
description	The invention relates to a valve assembly (2) for a fluid injector (1) for an internal combustion engine. The valve assembly (2) comprises a valve body with a valve recess (5), a central longitudinal axis (7), and a first axial end and a second axial end with respect to the central longitudinal axis (7). A valve needle (11) is axially moveable within the valve recess (5) with respect to the central longitudinal axis (7). In concurrence with a seal seat area (21) the valve needle (11) prevents a fluid flow through at least one flow hole (13) in its closing position and otherwise enables it. Furthermore, the injector (1) comprises a sac volume step (23) adjacent to the seal seat area (21) forming a part of a inner surface of a wall (9) of the valve body and a sac volume (25) being designed as one end of the valve recess (5) and being limited by a further part of the inner surface of the wall (9) of the valve body.
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The valve assembly (2) comprises a valve body with a valve recess (5), a central longitudinal axis (7), and a first axial end and a second axial end with respect to the central longitudinal axis (7). A valve needle (11) is axially moveable within the valve recess (5) with respect to the central longitudinal axis (7). In concurrence with a seal seat area (21) the valve needle (11) prevents a fluid flow through at least one flow hole (13) in its closing position and otherwise enables it. Furthermore, the injector (1) comprises a sac volume step (23) adjacent to the seal seat area (21) forming a part of a inner surface of a wall (9) of the valve body and a sac volume (25) being designed as one end of the valve recess (5) and being limited by a further part of the inner surface of the wall (9) of the valve body.</description><language>eng ; fre ; ger</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>2018</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=20180829&DB=EPODOC&CC=EP&NR=2905457B1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25562,76317</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20180829&DB=EPODOC&CC=EP&NR=2905457B1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Gestri, Luca</creatorcontrib><creatorcontrib>Saliu, Marco</creatorcontrib><creatorcontrib>Matteucci, Luca</creatorcontrib><creatorcontrib>Canesi, Nicola</creatorcontrib><creatorcontrib>Agresta, Antonio</creatorcontrib><title>Valve assembly and fluid injector for a combustion engine</title><description>The invention relates to a valve assembly (2) for a fluid injector (1) for an internal combustion engine. The valve assembly (2) comprises a valve body with a valve recess (5), a central longitudinal axis (7), and a first axial end and a second axial end with respect to the central longitudinal axis (7). A valve needle (11) is axially moveable within the valve recess (5) with respect to the central longitudinal axis (7). In concurrence with a seal seat area (21) the valve needle (11) prevents a fluid flow through at least one flow hole (13) in its closing position and otherwise enables it. Furthermore, the injector (1) comprises a sac volume step (23) adjacent to the seal seat area (21) forming a part of a inner surface of a wall (9) of the valve body and a sac volume (25) being designed as one end of the valve recess (5) and being limited by a further part of the inner surface of the wall (9) of the valve body.</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>2018</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZLAMS8wpS1VILC5OzU3KqVRIzEtRSMspzUxRyMzLSk0uyS9SSAPiRIXk_Nyk0uKSzPw8hdS89My8VB4G1rTEnOJUXijNzaDg5hri7KGbWpAfn1pckJicmpdaEu8aYGRpYGpiau5kaEyEEgDUDS4u</recordid><startdate>20180829</startdate><enddate>20180829</enddate><creator>Gestri, Luca</creator><creator>Saliu, Marco</creator><creator>Matteucci, Luca</creator><creator>Canesi, Nicola</creator><creator>Agresta, Antonio</creator><scope>EVB</scope></search><sort><creationdate>20180829</creationdate><title>Valve assembly and fluid injector for a combustion engine</title><author>Gestri, Luca ; Saliu, Marco ; Matteucci, Luca ; Canesi, Nicola ; Agresta, Antonio</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP2905457B13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2018</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>Gestri, Luca</creatorcontrib><creatorcontrib>Saliu, Marco</creatorcontrib><creatorcontrib>Matteucci, Luca</creatorcontrib><creatorcontrib>Canesi, Nicola</creatorcontrib><creatorcontrib>Agresta, Antonio</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Gestri, Luca</au><au>Saliu, Marco</au><au>Matteucci, Luca</au><au>Canesi, Nicola</au><au>Agresta, Antonio</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Valve assembly and fluid injector for a combustion engine</title><date>2018-08-29</date><risdate>2018</risdate><abstract>The invention relates to a valve assembly (2) for a fluid injector (1) for an internal combustion engine. The valve assembly (2) comprises a valve body with a valve recess (5), a central longitudinal axis (7), and a first axial end and a second axial end with respect to the central longitudinal axis (7). A valve needle (11) is axially moveable within the valve recess (5) with respect to the central longitudinal axis (7). In concurrence with a seal seat area (21) the valve needle (11) prevents a fluid flow through at least one flow hole (13) in its closing position and otherwise enables it. Furthermore, the injector (1) comprises a sac volume step (23) adjacent to the seal seat area (21) forming a part of a inner surface of a wall (9) of the valve body and a sac volume (25) being designed as one end of the valve recess (5) and being limited by a further part of the inner surface of the wall (9) of the valve body.</abstract><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	Valve assembly and fluid injector for a combustion engine
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