Source: http://www.google.com/patents/US5697554?dq=3984803
Timestamp: 2016-02-09 06:14:31
Document Index: 435181566

Matched Legal Cases: ['arts 11', 'art 11', 'art 12', 'art 12', 'art 13', 'art 13', 'art 11', 'arts 13']

Patent US5697554 - Metering valve for metering a fluid - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsA metering valve for metering a fluid for a fuel injection valve for internal combustion engines, with a hydraulic displacement amplifier for converting the actuating displacement of a piezoelectric actuator into an increased stroke of the valve needle. Integrating the displacement amplifier spatially...http://www.google.com/patents/US5697554?utm_source=gb-gplus-sharePatent US5697554 - Metering valve for metering a fluidAdvanced Patent SearchPublication numberUS5697554 APublication typeGrantApplication numberUS 08/581,959Publication dateDec 16, 1997Filing dateJan 2, 1996Priority dateJan 12, 1995Fee statusLapsedAlso published asCN1068930C, CN1133941A, DE19500706A1, DE19500706C2Publication number08581959, 581959, US 5697554 A, US 5697554A, US-A-5697554, US5697554 A, US5697554AInventorsGerhard Auwaerter, Katsuoki Itoh, Rudolf Heinz, Winfried Moser, Christoph FrankeOriginal AssigneeRobert Bosch GmbhExport CitationBiBTeX, EndNote, RefManPatent Citations (8), Referenced by (96), Classifications (24), Legal Events (6) External Links: USPTO, USPTO Assignment, EspacenetMetering valve for metering a fluid
US 5697554 AAbstract
A metering valve for metering a fluid for a fuel injection valve for internal combustion engines, with a hydraulic displacement amplifier for converting the actuating displacement of a piezoelectric actuator into an increased stroke of the valve needle. Integrating the displacement amplifier spatially into the valve housing in an "O valve" to give a small overall volume is served by providing the lifting piston of the displacement amplifier with an end section of reduced diameter which projects into a recess in the operation piston of the displacement amplifier. A Belleville spring lying in the amplifier chamber bounded by the pistons presses the operating piston against the actuator, and a helical compression spring arranged in the recess concentrically to the end section presses the lifting piston against the valve needle.
1. Metering valve for metering fluids in a fuel injection system of an internal combustion engines such as direct-injection diesel engines, comprising a valve housing (10) with a metering opening (20), a valve needle (21) which, together with a valve seat (18) surrounding the metering opening (20), controls the metering opening (20), is guided in axially displaceable fashion in the valve housing (10) and is pressed onto the valve seat (18) under the action of a valve-closing spring (22), a piezoelectric or magnetostrictive actuator (25) which displaces the valve needle (21) axially counter to a closing force of the valve-closing spring (22), and a hydraulic displacement amplifier (23) which converts a rapid change in length of the actuator (25) into a larger stroke of the valve needle (21) and, for this purpose, has an operating piston (30) coupled to the actuator (25), a lifting piston (33) coupled to the valve needle (21), and an amplifier chamber (36) enclosed in the valve housing (10) by the operating and lifting pistons (30, 33) with different piston areas that are guided in axially displaceable fashion therein, in which, for its use as a rapid, outward-opening valve with the valve seat (18) arranged on the outside of the housing (10), the lifting piston (33), which is of small-mass design, projects with an end section (331) of reduced diameter into a recess (32) in the operating piston (30), and a first compression spring (31), which presses the operating piston (30) against the actuator (25) and is designed as a flat spring, is supported on the operating piston (30) and on the valve housing (10), and a second compression spring (34), which presses the lifting piston (33) against the valve needle (21) in the opposite direction and is supported on the lifting piston (33) and on the bottom of the recess (32) in the operating piston (30), are arranged in the amplifier chamber (36).
The invention sets forth a metering valve for metering liquids or gases, especially an injection valve for fuel injection systems of internal combustion engines such as direct-injection diesel engines.
The metering valve according to the invention has the advantage of spatial integration of a displacement amplifier into a metering valve with the small overall volume which that entails, both in the form of an outward-opening valve with a valve seat arranged on the outside of the housing ("O valve") and in the form of an inward-opening valve with a valve seat arranged in the interior of the housing ("I valve"), which, in particular, permits a small overall length of the valve. The constructional integration meets the requirement for a rapidly closing valve and, at the same time, the risk of cavitation in the amplifier chamber of the hydraulic displacement amplifier during rapid closure is largely counteracted.
The injection valve, sketched in longitudinal section in FIG. 1, for a fuel injection system of internal combustion engines as a specific exemplary embodiment of a more generally conceived metering valve for metering liquids or gases has a housing 10 comprising three housing parts 11, 12, 13 which are placed one upon the other, end to end, and in each case joined together by sleeves 15, 16. The lower housing part 11 forms what is referred to as the valve body, which has an axial hole 17 with two hole sections of different diameters and at the bottom end of which a valve seat 18 is formed on the outside of the valve body 11. A valve member 19 is seated on the valve seat 18 and seals off a metering opening 20 which is designed as a spray hole, which can be opened in the course of the opening stroke of the valve member 19 and into which the axial hole 17 emerges. The valve member 19 is formed integrally on a valve needle 21 which is arranged in the axial hole 17 and is guided in axially displaceable fashion in the smaller-diameter hole section of the axial hole 17. The hollow-cylindrical central housing part 12 accommodates a valve-closing spring 22 and a hydraulic displacement transformer or displacement amplifier 23. The valve-closing spring 22, which is designed as a helical compression spring, concentrically surrounds the valve needle 21, which also projects into the central housing part 12, and is supported, on the one hand, on a spring plate 24 rigidly connected to the valve needle 21 and, on the other hand, on the end of the valve body 11. The hydraulic displacement amplifier 23, which is described in detail below, connects the valve needle 21 to a piezoelectric or magnetostrictive actuator 25, which is accommodated in a pocket-type recess 14 in the upper housing part 13. A connecting stub 26 for a fuel-filled injection delivery line at high pressure is provided at the upper end of the upper housing part 13. As indicated schematically in FIG. 1, the connecting stub 26 is connected to the larger-diameter hole section of the axial hole 17 in the lower housing part 11, referred to as the "valve body", by a connecting hole 27 running through the housing parts 13, 12 and 11.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS4022166 *Apr 3, 1975May 10, 1977Teledyne Industries, Inc.Piezoelectric fuel injector valveUS4544096 *Jul 28, 1983Oct 1, 1985Energy Conservation Innovations, Inc.Electronically controlled fuel injection system for diesel engineUS5452858 *Mar 11, 1994Sep 26, 1995Nippon Soken Inc.Fuel injector for internal combustion engine having throttle portionUS5495957 *Feb 23, 1995Mar 5, 1996Westinghouse Air Brake CompanyVariable angle friction clutch mechanism for a draft gear assemblyDE3533085A1 *Sep 17, 1985Mar 26, 1987Bosch Gmbh RobertZumessventil zur dosierung von fluessigkeiten oder gasenEP0324905A1 *Oct 26, 1988Jul 26, 1989Toyota Jidosha Kabushiki KaishaA fuel injector for an engineEP0371469B1 *Nov 29, 1989Feb 8, 1995Toyota Jidosha Kabushiki KaishaApparatus for driving piezoelectric element for closing and opening valve memberEP0477400A1 *Sep 25, 1990Apr 1, 1992Siemens AktiengesellschaftDevice for compensating the tolerance in the lift direction of the displacement transformer of a piezoelectric actuator* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS5957381 *Sep 30, 1997Sep 28, 1999Zexel CorporationFuel injection nozzleUS6062489 *Aug 26, 1997May 16, 2000Isuzu Motors LimitedFuel injector device for enginesUS6168133 *Jun 27, 1998Jan 2, 2001Robert Bosch GmbhPiezoelectrically actuated fuel injection valveUS6170766 *Nov 25, 1998Jan 9, 2001Focke & Co. (Gmbh & Co.)Valve, in particular glue valveUS6196472Feb 16, 1999Mar 6, 2001Lucas IndustriesFuel InjectorUS6234404 *Oct 12, 1999May 22, 2001Lucas Industries PlcFuel injectorUS6298829Mar 9, 2000Oct 9, 2001Westport Research Inc.Directly actuated injection valveUS6302333 *Apr 19, 1999Oct 16, 2001Daimlerchrysler AgInjector for fuel injector systemsUS6412704 *May 1, 2000Jul 2, 2002Caterpillar Inc.Fuel injector with rate shaping control through piezoelectric nozzle liftUS6437226Mar 7, 2001Aug 20, 2002Viking Technologies, Inc.Method and system for automatically tuning a stringed instrumentUS6530273 *Nov 24, 1999Mar 11, 2003Siemens AktiengesellschaftMetering device and method for delivering fluid employing a compensating elementUS6548938Jan 29, 2001Apr 15, 2003Viking Technologies, L.C.Apparatus having a pair of opposing surfaces driven by a piezoelectric actuatorUS6564777May 23, 2001May 20, 2003Westport Research Inc.Directly actuated injection valve with a composite needleUS6575138May 23, 2001Jun 10, 2003Westport Research Inc.Directly actuated injection valveUS6584958May 23, 2001Jul 1, 2003Westport Research Inc.Directly actuated injection valve with a ferromagnetic needleUS6585171Mar 23, 1999Jul 1, 2003Robert Bosch GmbhFuel injection valveUS6588678 *Aug 10, 2000Jul 8, 2003Robert Bosch GmbhInjection system and method for operating an injection systemUS6640784Oct 9, 2002Nov 4, 2003Robert Bosch CorporationSpark ignition direct injection systemUS6651950Mar 21, 2001Nov 25, 2003Robert Bosch GmbhValve for controlling liquidsUS6691934 *Mar 22, 2002Feb 17, 2004Robert Bosch GmbhFuel injection valve for internal combustion enginesUS6708712Oct 4, 2001Mar 23, 2004Illinois Tool Works Inc.Pressure regulator utilizing a disc springUS6717332Jan 29, 2001Apr 6, 2004Viking Technologies, L.C.Apparatus having a support structure and actuatorUS6722579 *Aug 12, 2000Apr 20, 2004Robert Bosch GmbhFuel injection valveUS6732949 *Nov 24, 2000May 11, 2004Robert Bosch GmbhFuel injection valve for internal combustion enginesUS6737788Feb 20, 2003May 18, 2004Viking Technologies, L.C.Apparatus having a pair of opposing surfaces driven by a piezoelectric actuatorUS6758408Jul 23, 2001Jul 6, 2004Siemens Automotive CorporationMetallurgical and mechanical compensation of the temperature response of terbium-based rare-earth magnetostrictive alloysUS6759790Mar 27, 2002Jul 6, 2004Viking Technologies, L.C.Apparatus for moving folded-back arms having a pair of opposing surfaces in response to an electrical activationUS6805329 *Sep 12, 2002Oct 19, 2004Robert Bosch GmbhValve for controlling fluidsUS6836056Feb 5, 2001Dec 28, 2004Viking Technologies, L.C.Linear motor having piezo actuatorsUS6924586Jun 20, 2003Aug 2, 2005Viking Technologies, L.C.Uni-body piezoelectric motorUS6957127 *Oct 26, 2000Oct 18, 2005Dresser, Inc.Dynamic current-to-pneumatic converter and pneumatic amplifierUS6983894Feb 13, 2003Jan 10, 2006Siemens Vdo Automotive Inc.Piezo-electrically actuated canister purge valve with a hydraulic amplifierUS7100577Jun 14, 2004Sep 5, 2006Westport Research Inc.Common rail directly actuated fuel injection valve with a pressurized hydraulic transmission device and a method of operating sameUS7218035Sep 29, 2003May 15, 2007University Of WaterlooMicro-positioning deviceUS7225790Apr 15, 2005Jun 5, 2007Westport Power Inc.Valve device and method for injecting a gaseous fuelUS7293550 *Jan 31, 2006Nov 13, 2007Gm Global Technology Operations, Inc.Fuel injector isolation seatUS7406951Apr 15, 2005Aug 5, 2008Robert Bosch GmbhFuel injector with variable actuator boostingUS7455244 *Dec 2, 2004Nov 25, 2008Robert Bosch GmbhFuel injector with direct-controlled injection valve memberUS7527041Jan 9, 2007May 5, 2009Westport Power Inc.Fuel injection valveUS7669783Feb 11, 2003Mar 2, 2010Siemens AktiengesellschaftMetering valve with a hydraulic transmission elementUS7699242 *Feb 13, 2008Apr 20, 2010Denso CorporationInjectorUS7850091 *Nov 24, 2005Dec 14, 2010Robert Bosch GmbhFuel injector with directly triggered injection valve memberUS7931211Feb 15, 2008Apr 26, 2011Denso CorporationInjectorUS7992810Dec 28, 2007Aug 9, 2011Robert Bosch GmbhFuel injector with couplerUS8146839 *Jan 12, 2007Apr 3, 2012Robert Bosch GmbhFuel injection device for an internal combustion engineUS8500036May 7, 2010Aug 6, 2013Caterpillar Inc.Hydraulically amplified mechanical couplingUS8683982Aug 9, 2011Apr 1, 2014Great Plains Diesel Technologies, L.C.Programmable diesel fuel injectorUS8807450 *Oct 2, 2006Aug 19, 2014Continental Automotive GmbhInjection system and method for producing an injection systemUS8864054May 27, 2009Oct 21, 2014Robert Bosch GmbhFuel injectorUS8997718Dec 9, 2011Apr 7, 2015Mcalister Technologies, LlcFuel injector actuator assemblies and associated methods of use and manufactureUS9091238Mar 15, 2013Jul 28, 2015Advanced Green Technologies, LlcSystems and methods for providing motion amplification and compensation by fluid displacementUS20030127617 *Sep 12, 2002Jul 10, 2003Robert Bosch GmbhValve for controlling fluidsUS20030168528 *Mar 22, 2002Sep 11, 2003Walter EglerFuel injection valve for internal combustion enginesUS20050199746 *Apr 15, 2005Sep 15, 2005Bernd BartunekValve device and method for injecting a gaseous fuelUS20050274360 *Jun 14, 2004Dec 15, 2005Westport Research Inc.Common rail directly actuated fuel injection valve with a pressurized hydraulic transmission device and a method of operating sameUS20060049718 *Sep 29, 2003Mar 9, 2006Amir KhajepourMicro-positioning deviceUS20070023542 *Mar 15, 2005Feb 1, 2007Robert Bosch GmbhFuel injector with variable actuator stroke transmissionUS20070152084 *Dec 2, 2004Jul 5, 2007Friedrich BoeckingFuel injector with direct-controlled injection valve memberUS20070175451 *Jan 31, 2006Aug 2, 2007Beardmore John MFuel injector isolation seatUS20070246019 *Apr 15, 2005Oct 25, 2007Wolfgang StoeckleinFuel Injector with Variable Actuator BoostingUS20080041344 *Jan 9, 2007Feb 21, 2008Richard WingFuel injection valveUS20080093483 *May 13, 2005Apr 24, 2008Friedrich BoeckingFuel Injector with Direct, Multi-Stage Injection Valve Member ControlUS20080217428 *Feb 15, 2008Sep 11, 2008Denso CorporationInjectorUS20080217441 *Feb 13, 2008Sep 11, 2008Denso CorporationInjectorUS20090020632 *Jan 12, 2007Jan 22, 2009Wolfgang BraunFuel Injection Device For An Internal Combustion EngineUS20090050114 *Mar 9, 2007Feb 26, 2009Rudolf HeinzInjectorUS20090200406 *Oct 2, 2006Aug 13, 2009Maximilian KronbergerInjection system and method for producing an injection systemUS20090266921 *Nov 24, 2005Oct 29, 2009Friedrich BoeckingFuel injector with directly triggered injection valve memberUS20100090032 *Dec 28, 2007Apr 15, 2010Andreas KellnerFuel injector with couplerUS20110139906 *May 27, 2009Jun 16, 2011Matthias BurgerFuel injectorCN1977105BJun 13, 2005Sep 29, 2010西港能源公司Valve with a pressurized hydraulic transmission device and a method of operating sameCN100432419COct 2, 2000Nov 12, 2008韦斯特波特动力股份有限公司Directly actuated injection valveCN100489299CJun 30, 2006May 20, 2009柳州华威电控技术有限公司Electric-controlled diesel oil fuel oil injector driven by telescoping elementCN100507254CJun 7, 2004Jul 1, 2009韦斯波特电力公司Valve device and method for injecting a gaseous fuelDE112011101596T5May 6, 2011Mar 28, 2013Caterpillar Inc.Hydraulisch erweiterte mechanische KupplungEP0937891A2 *Feb 15, 1999Aug 25, 1999LUCAS INDUSTRIES public limited companyFuel InjectorEP1209351A1 *Nov 16, 2001May 29, 2002Delphi Technologies, Inc.Fuel injector with piezoelectric actuatorEP1227241A2Jan 25, 2002Jul 31, 2002Detroit Diesel CorporationFuel injector assembly and internal combustion engine including sameEP1473460A1 *Oct 2, 2000Nov 3, 2004Westport Research Inc.Directly actuated injection valveEP1482569A1 *May 30, 2003Dec 1, 2004Siemens VDO Automotive S.p.A.Piezoelectric assemblyEP1531258A2 *Nov 10, 2004May 18, 2005Siemens AktiengesellschaftFuel injectorEP1766224A1 *Jun 13, 2005Mar 28, 2007Westport Power Inc.Valve with a pressurized hydraulic transmission device and a method of operating sameWO2000017507A1 *Mar 23, 1999Mar 30, 2000Friedrich BoeckingFuel injection valveWO2001029400A2 *Oct 2, 2000Apr 26, 2001Westport Res IncDirectly actuated injection valveWO2001057393A2 *Jan 23, 2001Aug 9, 2001Bosch Gmbh RobertHydraulic lift translation systemWO2001081751A1 *Mar 21, 2001Nov 1, 2001Bosch Gmbh RobertValve for controlling liquidsWO2002014683A1 *Aug 9, 2001Feb 21, 2002Bernhard FischerMetering valve with a hydraulic transmission elementWO2002095212A1 *May 17, 2002Nov 28, 2002Westport Res IncDirectly actuated injection valveWO2003064848A1 *Dec 23, 2002Aug 7, 2003Bosch Gmbh RobertFuel injection valveWO2004030196A2 *Sep 29, 2003Apr 8, 2004Sara BehjatMicro-positioning deviceWO2004099603A1 *May 3, 2004Nov 18, 2004Ganser HydromagFuel injection valve free of lossWO2004109087A1 *Jun 7, 2004Dec 16, 2004Westport Germany GmbhValve device and method for injecting a gaseous fuelWO2005121542A1Jun 13, 2005Dec 22, 2005Westport Res IncValve with a pressurized hydraulic transmission device and a method of operating sameWO2006003041A1 *Apr 25, 2005Jan 12, 2006Bosch Gmbh RobertFuel injection deviceWO2006069865A1 *Nov 24, 2005Jul 6, 2006Bosch Gmbh RobertFuel injector comprising a directly triggered injection valve memberWO2014075095A1 *Nov 12, 2013May 15, 2014Mcalister Technologies, LlcMechanical motion amplification for new thermodynamic cycles* Cited by examinerClassifications U.S. Classification239/88, 239/584International ClassificationF02M21/02, F02M61/08, H01L41/09, F16K31/02, F02M51/06, F02M61/16, F02M63/00Cooperative ClassificationF02M21/0263, F02M21/0269, F02M21/0254, F02M61/167, Y02T10/32, F02M61/08, F02M61/163, F02M2200/705, F02M51/0603, F02M2200/704European ClassificationF02M21/02S10, F02M61/08, F02M51/06A, F02M61/16C2, F02M61/16GLegal EventsDateCodeEventDescriptionJan 2, 1996ASAssignmentOwner name: ROBERT BOSCH GMBH, GERMANYFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:AUWAERTER, GERHARD;ITOH, KATSUOKI;HEINZ, RUDOLF;AND OTHERS;REEL/FRAME:007866/0675Effective date: 19951208May 31, 2001FPAYFee paymentYear of fee payment: 4May 31, 2005FPAYFee paymentYear of fee payment: 8Jun 22, 2009REMIMaintenance fee reminder mailedDec 16, 2009LAPSLapse for failure to pay maintenance feesFeb 2, 2010FPExpired due to failure to pay maintenance feeEffective date: 20091216RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services