EP0465613B1 - Krafstoffeinspritzsystem für brennkraftmaschinen - Google Patents

Krafstoffeinspritzsystem für brennkraftmaschinen Download PDF

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Publication number
EP0465613B1
EP0465613B1 EP91901681A EP91901681A EP0465613B1 EP 0465613 B1 EP0465613 B1 EP 0465613B1 EP 91901681 A EP91901681 A EP 91901681A EP 91901681 A EP91901681 A EP 91901681A EP 0465613 B1 EP0465613 B1 EP 0465613B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
fuel
inlet
plug
sockets
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91901681A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0465613A1 (de
Inventor
Udo Hafner
Ferdinand Reiter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0465613A1 publication Critical patent/EP0465613A1/de
Application granted granted Critical
Publication of EP0465613B1 publication Critical patent/EP0465613B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/04—Injectors peculiar thereto
    • F02M69/042—Positioning of injectors with respect to engine, e.g. in the air intake conduit
    • F02M69/044—Positioning of injectors with respect to engine, e.g. in the air intake conduit for injecting into the intake conduit downstream of an air throttle valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
    • F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails

Definitions

  • the invention relates to a fuel injection system for internal combustion engines of the type defined in the preamble of claim 1.
  • a fuel injection system US-A-4 570 601
  • the electromagnetically controlled fuel injection valves are controlled by an electronic control unit as a function of operating parameters of the internal combustion engine, such as intake air quantity, load, temperature, etc., which bring about a corresponding metering of the fuel injection quantity.
  • the electrical connections connected to the electromagnets of the fuel injection valves in the form of plug-in elements which protrude laterally on the valve housing are contacted when the fuel injector inlet connecting piece is inserted into connecting pieces of a fuel distributor with plug-in elements arranged on the connecting piece and thus connected to the control unit.
  • the lateral arrangement of the plug-in elements on the fuel injection valve and fuel distributor leads to an asymmetrical design requiring additional installation space.
  • the fuel injection system according to the invention with the features of claim 1 has the advantage that even in fuel injection systems with so-called top-feed valves, in which the plug-in elements protrude laterally from the valve housing due to the fuel supply at the end, fuel distributors and fuel injection valves form a compact unit which requires little installation space can be summarized.
  • FIG. 1 shows a perspective illustration of a fuel distributor with fuel injection valves of a fuel injection system for an internal combustion engine inserted therein
  • FIG. 2 shows a detail of a side view of a fuel distributor
  • FIG. 3 shows a detail of a bottom view of the fuel distributor in FIG. 2
  • FIG. 4 shows a section along the line IV-IV in FIG 2 with fuel injection valves inserted in the fuel distributor
  • FIG. 5 shows the same representation as in FIG. 4 of a modified fuel distributor.
  • the fuel injection system for an internal combustion engine which is only partially shown in FIG. 1, has a fuel distributor 110, in the plastic housing 111 of which a distributor channel 112 (FIGS. 4 and 5) is formed, which at the ends of the plastic housing 111 in a connecting mouthpiece 13 for the fuel supply and in one Connection mouthpiece 14 opens for the fuel drain.
  • the connection mouthpiece 13 is connected via a fuel supply line to a fuel pump (not shown) which delivers fuel from a fuel tank.
  • the mouthpiece 14 is connected to the fuel tank via a return line, also not shown.
  • a pressure control valve 15 is arranged, which regulates the fuel pressure in the distributor channel 112 to a predetermined value.
  • the plastic housing 111 carries on its underside four connecting pieces 116, each with one Mouth opening 117 ( Figure 4) are connected to the distribution channel 112.
  • the number of connecting pieces 116 corresponds to the number of combustion cylinders of the internal combustion engine.
  • the fuel injection system also has - corresponding to the number of combustion cylinders of the internal combustion engine - four fuel injection valves 118 of the so-called top-feed type.
  • Each of these electromagnetically actuated fuel injection valves 118 has a valve housing 119 with an inlet connection 120 (FIGS. 4 and 5) formed at one end, which has a fuel inlet opening opening at its free end.
  • inlet connection 120 With this inlet connection 120, each fuel injection valve 118 is inserted in a connection stub 116 on the underside of the fuel distributor 110 in a liquid-tight manner, the fuel inlet opening in the inlet connection 120 being connected to the distribution channel 112 via the opening 117 in the connection stub 116.
  • the fuel injection valves 118 each have an electromagnet (not shown here), the power supply of which is provided via two electrical plug-in elements 121, 122 (FIGS. 4 and 5) which project laterally on the valve housing 119 near the inlet connector 120.
  • the plug elements 121, 122 have a rectangular cross section.
  • a number of electrical plug sockets 126, 127 are integrated in the plastic housing 111 of the fuel distributor 110 and are designed to accommodate the plug elements 121, 122 in a corresponding manner.
  • Each two sockets 126, 127 are spatially assigned to a connecting piece 116 so that when inserting the inlet piece 120 of a fuel injector 118 into the connecting piece 116, the plug elements 121, 122 simultaneously penetrate into the associated sockets 126, 127.
  • All sockets 126, 127 are individually connected to a multi-pin connector 30, which is attached to one end face of the plastic housing 111, via electrical connecting cables running in the plastic housing 111 of the fuel distributor 110.
  • the electronic control unit for controlling the fuel injection valves 118 is connected to the connector 30 via a multi-wheel cable.
  • the electronic control unit for controlling the fuel injection valves 118 is connected to the connector 30 via a multi-wheel cable.
  • the fuel distributor 110 with the fuel injection valves 118 inserted therein can be assembled on the internal combustion engine as a completely prefabricated and final-checked structural unit, the injection orifices 32 of the fuel injection valves 118 each protruding into an intake pipe of the internal combustion engine.
  • FIGS. 2 to 4 An exemplary embodiment of a fuel distributor 110 is shown in FIGS. 2 to 4.
  • the distribution channel 112 is formed in the plastic housing 111 and communicates with a plurality of connecting pieces 116 via outlet openings 117.
  • the rotationally symmetrical connecting pieces 116 are integrally formed on the elongated box-shaped plastic housing 111 and protrude on the underside thereof (FIGS. 2 and 3).
  • Ears 134 formed on the plastic housing 111 with fastening holes 135 serve to fasten the completely pre-assembled fuel distributor 110 to the internal combustion engine.
  • each connector 116 near the insertion opening 136 for the inlet 120 of the fuel injection valves 118 two diametrically arranged pockets 137, 138 are provided, which run through the connector 116 and the plastic housing 111 and are open towards the top of the plastic housing 111 facing away from the connector 116.
  • the pockets 137, 138 are each provided with a slot 139, 140 which is designed such that an electrical plug element 121 or 122 on the fuel injection valve 118 can pass through.
  • a plug socket 126, 127 is inserted coaxially to the slot 139 or 140 in each pocket 137 or 138 and secured against axial displacement in the lower part of the pocket by a catch.
  • the connector socket 126 or 127 has on one rear side a spring tongue 141 or 142 which engages behind a latching lug 143 or 144 in the pocket 137, 138.
  • the end of the plug socket 126 or 127 facing away from the slot 139 or 140 is connected to a connecting line 145 or 146 which leads to a connector provided on the side of the plastic housing 111.
  • the pockets 137 and 138 are covered by a cover rail 147, which is clipped into the plastic housing 111 by means of catches 148 provided on the top of the pockets on the plastic housing 111.
  • Each catch 148 consists of two mutually opposite catch ribs 149, 150 which project from lateral webs 168, 169 of the cover rail 147 projecting into the pockets 137, 138 and each have an insertion bevel 151 and a catch projection 152 in the usual manner. With this latching projection 152, the latching ribs 149, 150 engage behind corresponding projections 153 on the opposite pocket wall.
  • a groove 154 is provided in each longitudinal web 168, 169 of the cover rail 147, in which each contains a seal 155.
  • Each connecting piece 116 has at its end having the insertion opening 136 for the inlet connection 120 of the fuel injection valves 118 an axially projecting locking collar 156 for mechanically locking the fuel injection valve 118 inserted into the insertion opening 136.
  • each electromagnetic fuel injection valve 118 of the so-called top-feed type has a valve housing 119 with an inlet connection 120 formed at the end, which has a fuel inlet opening 157 opening at its free end.
  • a plastic hood 158 which coaxially surrounds the inlet connection 120 with a hub-like projection 161 and carries a radially protruding locking flange 159, is firmly attached to the front end of the valve housing 119.
  • the two plug-in elements 121, 122 emerge freely from the annular surface 160 of the locking flange 159 facing the inlet connection 120 and extend diametrically to one another parallel to and at a distance from the inlet connection 120.
  • each plug-in element 121, 122 is electrically conductively connected to a winding end of an excitation winding of an electromagnet for valve actuation .
  • the fuel injection valve 118 with its inlet connection 120 and the hub-like projection 161 of the plastic hood 158 surrounding it is pushed into the insertion opening 136 in the connection nozzle 116, the two plug elements 121, 122 through the slots 139, 140 in the annular surface 162 surrounding the insertion opening 136 on the connection nozzle 116 step through and insert into the assigned sockets 126, 127.
  • the locking collar 156 snaps behind the locking flange 159 and secures this through Plug-in elements 121, 122 and sockets 126, 127 rotatably held in the connecting piece 116 fuel injector 118 against unwanted axial displacement.
  • an annular flat seal 163 is inserted between the annular surface 160 on the locking flange 159 and the annular surface 162 on the connecting piece 116.
  • An O-ring seal 164 which lies on the end face of the hub-like projection 161 of the plastic hood 158 and surrounds the inlet connector 120, prevents fuel from escaping from the connector 116.
  • a filter basket 165 is inserted in each inlet connector 120.
  • the modified fuel distributor 110 shown in cross section in FIG. 5 differs from the fuel distributor 110 shown in FIG. 4 and described above only in that a filter duct 166 is arranged toward the distributor duct 112, in which a filter 167 is interchangeably inserted. This eliminates the need to insert filter baskets 165 into each individual inlet connection 120 of the fuel injection valves 118. Otherwise, all of the components of the fuel distributor 110 in FIG. 5 match the components of the fuel distributor 110 according to FIG. 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP91901681A 1990-01-27 1991-01-10 Krafstoffeinspritzsystem für brennkraftmaschinen Expired - Lifetime EP0465613B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4002393A DE4002393A1 (de) 1990-01-27 1990-01-27 Kraftstoffeinspritzsystem fuer brennkraftmaschinen
DE4002393 1990-01-27

Publications (2)

Publication Number Publication Date
EP0465613A1 EP0465613A1 (de) 1992-01-15
EP0465613B1 true EP0465613B1 (de) 1994-03-23

Family

ID=6398896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91901681A Expired - Lifetime EP0465613B1 (de) 1990-01-27 1991-01-10 Krafstoffeinspritzsystem für brennkraftmaschinen

Country Status (8)

Country Link
US (1) US5203304A (es)
EP (1) EP0465613B1 (es)
JP (1) JP3150692B2 (es)
KR (1) KR100195819B1 (es)
BR (1) BR9105240A (es)
DE (2) DE4002393A1 (es)
ES (1) ES2051585T3 (es)
WO (1) WO1991011608A1 (es)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4109653A1 (de) * 1991-03-23 1992-09-24 Bosch Gmbh Robert Kontaktierungsleiste zur gemeinsamen elektrischen kontaktierung mehrerer elektrisch betaetigbarer brennstoffeinspritzventile
DE4111988C2 (de) * 1991-04-12 1994-07-14 Bosch Gmbh Robert Brennstoffverteiler
DE4118512A1 (de) * 1991-06-06 1992-12-10 Bosch Gmbh Robert Elektrisch betaetigbares brennstoffeinspritzventil und verfahren zu dessen elektrischer kontaktierung
DE4131537A1 (de) * 1991-09-21 1993-04-01 Bosch Gmbh Robert Brennstoffverteiler
US5363825A (en) * 1993-01-27 1994-11-15 Volkswagen Ag Fuel injection arrangement for an internal combustion engine having a plurality of electric fuel injection valves
US5301647A (en) * 1993-06-14 1994-04-12 Siemens Automotive L.P. Fuel injector attachment clip
DE4332118A1 (de) * 1993-09-22 1995-03-23 Bosch Gmbh Robert Brennstoffeinspritzvorrichtung
US5568798A (en) * 1995-06-08 1996-10-29 Siemens Automotive Corporation Plastic fuel rail having integrated electrical wiring
US5531202A (en) * 1995-07-18 1996-07-02 Siemens Automotive Corporation Fuel rail assembly having internal electrical connectors
US5616037A (en) * 1995-08-04 1997-04-01 Siemens Automotive Corporation Fuel rail with combined electrical connector and fuel injector retainer
US5598824A (en) * 1996-04-15 1997-02-04 Ford Motor Company Fuel delivery system for an internal combustion engine
GB9615305D0 (en) * 1996-07-20 1996-09-04 Lucas Ind Plc Connector
US5785022A (en) * 1997-05-28 1998-07-28 Epic Technical Group, Inc. Fuel injector post
DE19732063B4 (de) * 1997-07-25 2006-03-16 Audi Ag Vorrichtung zum Einsetzen von Einspritzventilen
US6053148A (en) * 1998-02-21 2000-04-25 Ford Motor Company Intake manifold for an internal combustion engine
US6408827B1 (en) * 1999-11-12 2002-06-25 Siemens Automotive Corporation Stamped fuel rail with integrated mounting brackets
DE10012834A1 (de) 2000-03-16 2001-09-27 Bayerische Motoren Werke Ag Kapsel für ein Einspritzsystem
DE60003784T2 (de) 2000-04-26 2004-06-03 Ford Global Technologies, Inc., A subsidiary of Ford Motor Co., Dearborn Kraftstoffeinspritzsystem für Brennkraftmaschinen
JP4217941B2 (ja) * 2000-12-08 2009-02-04 株式会社デンソー 燃料噴射装置及びその調整方法
US6418912B1 (en) 2000-12-18 2002-07-16 Siemens Automotive Corporation HPDI injector and packaging
US6783336B2 (en) * 2002-06-28 2004-08-31 Visteon Global Technologies, Inc. Fuel sender assembly
US6981662B2 (en) * 2002-11-08 2006-01-03 Siemens Diesel Systems Technology Coupling device assembly
FR2890793B1 (fr) * 2005-09-15 2007-12-07 Eaton Sam Sa Monegasque Dispositif de raccordement d'un connecteur a un solenoide de pilotage d'un injecteur
JP2010138828A (ja) * 2008-12-12 2010-06-24 Nikki Co Ltd Ｌｐｇインジェクタ及びｌｐｇ噴射装置
DE102013216836A1 (de) * 2013-08-23 2015-02-26 Continental Automotive Gmbh Stellantrieb zur Betätigung eines Einspritzventils und Einspritzventil
DE102013217538A1 (de) * 2013-09-03 2015-03-05 Robert Bosch Gmbh Haltevorrichtung zur Befestigung eines Brennstoffverteilers an einer Brennkraftmaschine
EP3184793A1 (en) * 2015-12-21 2017-06-28 Continental Automotive GmbH Long injector for fuel injection into an internal combustion engine

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3010613A1 (de) * 1980-03-20 1981-10-01 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzanlage
DE3228508A1 (de) * 1982-07-30 1984-02-02 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffversorgungsleitung
JPS60108561A (ja) * 1983-11-15 1985-06-14 Nippon Denso Co Ltd 燃料分配管
JPH0784169B2 (ja) * 1987-09-02 1995-09-13 日本ケーブル株式会社 索道の中間停止装置
DE3730571C2 (de) * 1987-09-11 1998-07-02 Bosch Gmbh Robert Vorrichtung zur Halterung, Kraftstoffversorgung und elektrischen Kontaktierung von elektromagnetisch betätigbaren Kraftstoffeinspritzventilen
DE3736198A1 (de) * 1987-10-26 1989-05-18 Voest Alpine Automotive Kraftstoffeinspritzduese fuer brennkraftmaschinen
JP2749839B2 (ja) * 1988-10-31 1998-05-13 株式会社デンソー エンジンの燃料噴射装置
DE3907764A1 (de) * 1989-03-10 1990-09-13 Bosch Gmbh Robert Kraftstoffverteiler fuer kraftstoffeinspritzanlagen von brennkraftmaschinen
US4950171A (en) * 1989-08-11 1990-08-21 Itt Corporation Fuel injector connector system
US5030116A (en) * 1989-09-04 1991-07-09 Sumitomo Wiring System, Ltd. Connector block for injectors for internal combustion engine and junction terminal for use with the same connector block
US5070844A (en) * 1990-07-23 1991-12-10 Siemens Automotive L.P. Composite fuel rail socket for bottom- and side-feed fuel injectors
US5086743A (en) * 1990-12-20 1992-02-11 Ford Motor Company Integrally formed and tuned fuel rail/injectors

Also Published As

Publication number Publication date
US5203304A (en) 1993-04-20
EP0465613A1 (de) 1992-01-15
KR920701661A (ko) 1992-08-12
JPH04505202A (ja) 1992-09-10
KR100195819B1 (en) 1999-06-15
BR9105240A (pt) 1992-08-04
WO1991011608A1 (de) 1991-08-08
JP3150692B2 (ja) 2001-03-26
ES2051585T3 (es) 1994-06-16
DE4002393A1 (de) 1991-08-01
DE59101223D1 (de) 1994-04-28

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