EP0423469A1 - Dispositif de commande pour arrêter un moteur à combustion interne - Google Patents

Dispositif de commande pour arrêter un moteur à combustion interne Download PDF

Info

Publication number
EP0423469A1
EP0423469A1 EP19900116445 EP90116445A EP0423469A1 EP 0423469 A1 EP0423469 A1 EP 0423469A1 EP 19900116445 EP19900116445 EP 19900116445 EP 90116445 A EP90116445 A EP 90116445A EP 0423469 A1 EP0423469 A1 EP 0423469A1
Authority
EP
European Patent Office
Prior art keywords
valve
line
seat
suction
closing body
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.)
Ceased
Application number
EP19900116445
Other languages
German (de)
English (en)
Inventor
Max Straubel
Manfred Dipl.-Ing. Kraemer
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 EP0423469A1 publication Critical patent/EP0423469A1/fr
Ceased legal-status Critical Current

Links

Images

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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0205—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine
    • F02M63/0215—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine by draining or closing fuel conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Definitions

  • the invention is based on a control device according to the preamble of claim 1.
  • a control device is already known in which the direction of action of the feed pump is reversible by means of a reversing valve by interchanging the lines to stop the internal combustion engine, and The suction chamber of the fuel injection pump is connected to the suction side of the feed pump and the pressure side of the feed pump to the tank.
  • the reversing valve is designed as a 4/2-way valve to achieve this functional sequence.
  • the reversing valve contains a spool as a valve member, and it must therefore be ensured that only filtered fuel flows to the control valve, thereby causing both on the suction side as well as on the pressure side of the feed pump, as seen in the flow direction, in each case before the reversing valve, a fuel filter must be present.
  • control device designed according to the invention with the characterizing features of patent claim 1 realizes a solution which increases the operational and functional reliability of the control device, in particular during a cold start, with little construction effort, since a fine filter is no longer required on the suction side of the feed pump and is off dirt particles sucked into the tank cannot hinder the operation of the valve.
  • a valve member that is inexpensive to manufacture and securely guides the seat valve closing body is provided, and the reversing valve designed according to claim 4 as a 5/2-way valve can be used particularly advantageously in injection pumps that achieve a so-called cross-flushing in the individual partial suction chambers are provided with throttles in the inlet, it being advantageous for all pump types that the suction on the outflow side does not result in a reversal of the flow direction even when it is switched off.
  • a dirt-insensitive reversing valve is realized which, by the combination of two seat valves, does not require a filter for its operation either on the inflow or outflow side and thus has a high level of functional reliability.
  • FIG. 1 The first embodiment with a normally rinsed suction chamber and a combined seat / slide valve is shown in a simplified manner in FIG. 1 in the conveying position and in FIG. 2 in the switch-off position; 3 and 4 represent the second exemplary embodiment with a flushed suction chamber and a combined seat / slide valve, FIGS. 5 and 6 the third exemplary embodiment with a double double-seat valve and FIGS. 7 and 8 the fourth exemplary embodiment a combined seat / slide valve.
  • FIG. 9 shows a seat / slide valve in constructive detail, the design of the associated elastomer-coated seat valve closing body being shown in an enlarged view in FIG. 10.
  • FIGS. 1-8 The basic structure is common to all four exemplary embodiments shown in FIGS. 1-8.
  • the reversing valve 12 is designed as a 4/2-way valve, the valve member 16 being shown in the conveying position.
  • the valve member 16 At its end facing the return spring 17, the valve member 16 carries a seat valve closing body 18 which is designed as a double seat valve closing body and which cooperates with a first valve seat 19 and a second valve seat 21, which lie opposite one another and are located in a valve housing 22.
  • the seat valve closing body 18 is supported and guided at the same time by a control slide 23 positioned at the end of the valve member 16 facing away from the return spring 17, the control slide 23 having at least one, preferably circular segment-shaped recess 25, which has the fuel flow between the connections switched through by the control slide 23 enables.
  • the first valve seat 19 is open and the seat valve closing body 18 lies sealingly against the second valve seat 21, with which a valve chamber 24 receiving the return spring 17 is closed and a tank line 27 connected to a tank 26 with a to the suction side of the Feed pump 13 leading suction line 28 is connected.
  • a filter 31 which is designed as a fine filter, is inserted downstream of the feed pump 13 in a pressure line 29.
  • the pressure line 29 is separated by the control slide 23 from a connecting line 32 which enters a suction chamber 33 of the fuel injection pump 11.
  • An overflow line 34 leading to the tank 26 emerges from the suction chamber 33, into which an overflow valve 26 opening to the tank 26 and limiting the pressure in the suction chamber 33 is inserted.
  • the tank line 27, suction line 28, pressure line 29 and connecting line 32 are connected in this order to the valve housing 22 via four connections 35a-d.
  • the first embodiment is shown with the valve member 16 in the switch-off position.
  • the seat valve closes Body 18 lies sealingly on the first valve seat 19, as a result of which the second valve seat 21 is open and opens the connection, starting from the connecting line 32 via a permanently open connecting channel 37 to the suction line 28 which is arranged in the valve housing 22 and leads to the valve chamber 24.
  • the feed pump 13 can deliver the fuel to the tank line 27 connected to the pressure line 29 by the position of the control slide 23 and thus into the tank 26.
  • the second exemplary embodiment is shown in FIG. 3 in the conveying position and in FIG. 4 in the switch-off position.
  • the second embodiment has a 5/2-way valve as a reversing valve 12, which, in addition to the four connections 35a, b, c and d for the tank line 27, suction line 28, pressure line 29 and connecting line 32, also has a fifth connection 41 for a downstream side of the Overflow valve 36 has suction line 42 connected to suction chamber 33 and opening into valve chamber 24.
  • the suction line 42 is blocked by the valve chamber 24 which is closed by the seat valve closing body 18 against the second valve seat 21, while in the switched-off position according to FIG in the first exemplary embodiment, the fuel is conveyed from the valve chamber 24 to the tank 26 in the manner described.
  • the suction space 33 is connected to the valve space 24 by the suction line 42 in such a way that the connection point of the suction line 42 to the suction space 33 is approximately diametrically opposite the connection point of the connecting line 32 to the suction space 33.
  • the third exemplary embodiment is shown in FIG. 5 in the conveying position and in FIG. 6 in the switch-off position.
  • the reversing valve 12 is designed as a 5/2-way valve with the valve member 16, which, in addition to the seat valve closing body 18, eliminating the control slide 23, has a second seat valve closing body 46, which is also designed as a double seat valve closing body and has two opposing valve bodies 22 located in the valve housing 22 Valve seats 47, 48 cooperate, of which one valve seat 47 in the conveyed position of the reversing valve 12 keeps the connection from the pressure line 29 to the connecting line 32 open and closes it in the switch-off position, and of which the other valve seat 48 in the switched-off position of the reversing valve 12 connects holds the pressure line 29 to the tank line 27 open and closes it in the delivery position.
  • valve member 16 of the reversing valve 12 is held in the region of each of the two seat valve closing bodies 18, 46 by a first diaphragm 51 or second diaphragm 52, which radially encompasses, is resiliently designed and has an openwork contour and the valve member 16 is axially movable and radially leading.
  • the filter 31 is not inserted between the feed pump 13 and the reversing valve 12 in the pressure line 29, but, since there is only required to protect the fuel injection pump 11, is connected downstream of the reversing valve 12 in terms of flow and inserted into the connecting line 32.
  • the fourth embodiment is shown in FIG. 7 in the conveying position and in FIG. 8 in the switch-off position.
  • the reversing valve 12 is designed as a 6/2-way valve and, as in the case of the first two exemplary embodiments, is constructed as a seat / slide valve.
  • valve housing 22 On its valve housing 22, in addition to the four connections 35a-d for the tank line 27, suction line 28, pressure line 29 and connecting line 32, it also has the fifth connection 41 for a first subsection 81 of the overflow line 34 and connected downstream of the overflow valve 36 to the suction chamber 33 a sixth connection 83 for the second subsection 82 of the overflow line 34 leading to the overflow valve 36, both subsections 81, 82 of the overflow line 34 being connected to one another both in the delivery position of the reversing valve 12 and in its switch-off position.
  • FIGS. 9 and 10 An embodiment variant of the fourth exemplary embodiment described in relation to FIGS. 7 and 8 is shown in FIGS. 9 and 10 in constructive detail with the valve member 16 and the associated valve seats 19, 21, the valve member 16 being shown in an enlarged view in FIG.
  • the seat valve closing body 18 is partially encased on its outer contour with an elastomer part 56 and each has a sealing lip 59 or 61, which is directed against the valve seat 19 and the second valve seat 21 and embodied by the elastomer part 56.
  • These sealing lips 59, 61 have a slight projection 62 axially relative to the end face 57 and 58.
  • the part of the end faces 57 and 58 which is not provided with the elastomer part 56 forms a metallic stop when the valve seat 19 or 21 is positively engaged.
  • the elastomer-coated seat valve closing body 18 is preferably also used in the exemplary embodiments shown in simplified form in FIGS. 1-4.
  • the second valve seat 21 is formed by an inner region of a bottom-shaped end face 66 of a pot-shaped insert part 67, as shown in FIG. 9, which with its inner wall corresponds to the Valve space 24 limited.
  • the insert 67 is advantageously made of sheet metal as a deep-drawn part. It is axially secured by a spring washer 71 for the return spring 17, which acts on the valve member 16 and which seals the valve chamber 24, and is detachably fastened to the reversing valve 12.
  • the valve member 16 also contained in FIGS. 7 and 8 has a guide collar 72, a second guide collar 73 and an intermediate valve slide 74, which controls the connection from the pressure line 29 to the connecting line 32 and corresponds to the control slide 23 of the first exemplary embodiment .
  • the reversing valve 12 of the first embodiment (FIGS. 1 and 2) has the special feature that the valve member 16 is provided with a dirt-resistant seat valve closing body 18, so that the tank line 27 does not need to have a filter.
  • the pressure line 29 following the feed pump 13 contains the filter 31 required for the operation of the control slide 23 and the fuel injection pump 11.
  • the reversing valve 12 which operates as a 4/2-way valve, contains the internal connecting channel 37, through which the suction chamber 33 of the fuel injection pump 11 is emptied by the feed pump 13 when it is switched off.
  • the fifth connection 41 is provided instead of the connecting channel 37 in the second exemplary embodiment according to FIGS. 3 and 4, the same sequence of action taking place with a reversing valve 12 designed as a 5/2-way valve.
  • the reversing valve 12, also designed as a 5/2-way valve, in the third exemplary embodiment (FIGS. 5 and 6) of the control valve 16 has the two seat valve closing bodies 18, 46, so that the reversing valve 12 has no filter at all because of the dirt sensitivity of the seat valves is connected upstream and the filter 31 is only used directly in front of the suction space 33 to maintain the operational safety of the fuel injection pump 11 in the connecting line 32.
  • the fourth exemplary embodiment according to FIGS. 7-10 shows, by way of example, that a simplified line routing can be achieved with a 6/2-way valve, the structural configuration according to FIGS. 9 and 10 showing how a perfect sealing function of the reversing valve provided with the seat valve closing body 18 12 can be reached.
  • the second sealing lip 61 first reaches the end face 66, forming a frictional connection.
  • the second sealing lip deforms elastically until the protrusion 62 is pressed back and the metallic stop by positive engagement with the end face 66 ends the axial movement of the valve members 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
EP19900116445 1989-10-14 1990-08-28 Dispositif de commande pour arrêter un moteur à combustion interne Ceased EP0423469A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3934389 1989-10-14
DE19893934389 DE3934389A1 (de) 1989-10-14 1989-10-14 Steuereinrichtung zum stillsetzen einer brennkraftmaschine

Publications (1)

Publication Number Publication Date
EP0423469A1 true EP0423469A1 (fr) 1991-04-24

Family

ID=6391509

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900116445 Ceased EP0423469A1 (fr) 1989-10-14 1990-08-28 Dispositif de commande pour arrêter un moteur à combustion interne

Country Status (3)

Country Link
EP (1) EP0423469A1 (fr)
JP (1) JPH03138427A (fr)
DE (1) DE3934389A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2265417A (en) * 1992-03-26 1993-09-29 Bosch Gmbh Robert Shutting-off fuel flow to i.c. engine injection pumps
EP0626530A2 (fr) * 1993-05-28 1994-11-30 LuK Fahrzeug-Hydraulik GmbH & Co. KG Arrangement de soupape

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0499789A1 (fr) * 1991-02-16 1992-08-26 Robert Bosch Gmbh Système de commande pour arrêter un moteur à combustion interne
DE4129828C1 (fr) * 1991-09-07 1993-04-29 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De
DE4133557C2 (de) * 1991-10-10 2000-06-29 Bosch Gmbh Robert Steuereinrichtung zum Stillsetzen einer Brennkraftmaschine
CN111878275B (zh) * 2020-07-29 2022-02-11 一汽解放汽车有限公司 一种用于电控喷油的装置和喷油器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE941236C (de) * 1952-07-11 1956-04-05 Paxman & Co Ltd Davey Sicherheitsvorrichtung zum Stillsetzen von Einspritz-Brennkraftmaschinen
GB819278A (en) * 1956-02-20 1959-09-02 Carrier Engineering Co Ltd Improvements in or relating to reversing valves for refrigeration systems
DE3014712A1 (de) * 1980-04-17 1981-10-22 Robert Bosch Gmbh, 7000 Stuttgart Steuereinrichtung zum stillsetzen einer dieselbrennkraftmaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE941236C (de) * 1952-07-11 1956-04-05 Paxman & Co Ltd Davey Sicherheitsvorrichtung zum Stillsetzen von Einspritz-Brennkraftmaschinen
GB819278A (en) * 1956-02-20 1959-09-02 Carrier Engineering Co Ltd Improvements in or relating to reversing valves for refrigeration systems
DE3014712A1 (de) * 1980-04-17 1981-10-22 Robert Bosch Gmbh, 7000 Stuttgart Steuereinrichtung zum stillsetzen einer dieselbrennkraftmaschine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2265417A (en) * 1992-03-26 1993-09-29 Bosch Gmbh Robert Shutting-off fuel flow to i.c. engine injection pumps
GB2265417B (en) * 1992-03-26 1995-04-05 Bosch Gmbh Robert Fuel delivery devices for internal combustion engines
EP0626530A2 (fr) * 1993-05-28 1994-11-30 LuK Fahrzeug-Hydraulik GmbH & Co. KG Arrangement de soupape
EP0626530B1 (fr) * 1993-05-28 1999-03-31 LuK Fahrzeug-Hydraulik GmbH & Co. KG Arrangement de soupape

Also Published As

Publication number Publication date
JPH03138427A (ja) 1991-06-12
DE3934389A1 (de) 1991-04-18

Similar Documents

Publication Publication Date Title
EP0872674B1 (fr) Electrovanne avec compensateur de pression
EP0309797B1 (fr) Soupape magnétique
EP0960274B1 (fr) Dispositif d'injection de carburant pour moteurs a combustion interne
DE1576769C3 (de) Einrichtung zur Nachverbrennung der Abgase von Brennkraftmaschinen
DE19649554A1 (de) Membrandruckregelventilanordnung
EP1655465B1 (fr) Soupape à air ambiant pour un turbocompresseur d'un moteur à combustion interne
EP2483558B1 (fr) Pompe por une appareil de nettoyage haute pression
DE102004022275A1 (de) Druckregelventil
WO1999018349A1 (fr) Soupape d'injection a commande directe, en particulier soupape d'injection de carburant
EP0423469A1 (fr) Dispositif de commande pour arrêter un moteur à combustion interne
DE19939939A1 (de) Injektor für ein Common-Rail-Einspritzsystem für Brennkraftmaschinen mit kompakter Bauweise
DE2644627A1 (de) Regelventilanordnung fuer verdraengungspumpe mit veraenderlichem hub
DE2710102C3 (de) Durchflußventil für die Rückführung von Abgas in die Ansaugleitung einer Brennkraftmaschine
EP1144842A1 (fr) Injecteur pour systeme d'injection de carburant pour moteurs a combustion interne, muni d'un pointeau faisant saillie dans la chambre de commande de soupape
DE10164123A1 (de) Kraftstoff-Einspritzvorrichtung
DE102014214886A1 (de) Doppeltwirkendes Rückschlagventil
EP0134310A2 (fr) Agencement de soupape pour commander la vitesse de ralenti de moteurs à combustion interne
WO2002033244A1 (fr) Soupape d"injection de carburant
DE10327575A1 (de) Kraftstoffzuführanlage und Druckregelventil hierfür
DE3231929A1 (de) Fluessigkeitsfilter
EP1370761A1 (fr) Injecteur
DE4435703A1 (de) Saugstrahlpumpe und ihre Verwendung
DE10233574B4 (de) Ventil zum Steuern von Flüssigkeiten
WO2008128859A1 (fr) Soupape de commande dans un module d'alimentation en carburant et procédé de transformation du module d'alimentation en carburant
WO2003027482A1 (fr) Soupape d'injection de carburant

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19910924

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ROBERT BOSCH GMBH

17Q First examination report despatched

Effective date: 19920121

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19930425