EP1088981A2 - Méthode pour decroítre la pression dans le rail d'alimentation d'un moteur à combustion - Google Patents

Méthode pour decroítre la pression dans le rail d'alimentation d'un moteur à combustion Download PDF

Info

Publication number
EP1088981A2
EP1088981A2 EP00108928A EP00108928A EP1088981A2 EP 1088981 A2 EP1088981 A2 EP 1088981A2 EP 00108928 A EP00108928 A EP 00108928A EP 00108928 A EP00108928 A EP 00108928A EP 1088981 A2 EP1088981 A2 EP 1088981A2
Authority
EP
European Patent Office
Prior art keywords
rail
pressure
dav
valve
reducing valve
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.)
Withdrawn
Application number
EP00108928A
Other languages
German (de)
English (en)
Other versions
EP1088981A3 (fr
Inventor
Andreas Kellner
Juergen Hammer
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 EP1088981A2 publication Critical patent/EP1088981A2/fr
Publication of EP1088981A3 publication Critical patent/EP1088981A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/3809—Common rail control systems
    • F02D41/3836—Controlling the fuel pressure
    • F02D41/3863—Controlling the fuel pressure by controlling the flow out of the common rail, e.g. using pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/31—Control of the fuel pressure

Definitions

  • the invention relates to a method for reducing the rail pressure in a common rail system for internal combustion engines according to the Preamble of the main claim.
  • the pressure relief valve in internal combustion engines with one Common rail system has the task in the two-digit concept of the Pressure control circuit with throttled high pressure pump, the Pressure reduction in certain operating points of the internal combustion engine to accomplish.
  • the function of the pressure relief valve occurs preferably in thrust and in so-called empty gas bursts in Force.
  • the pressure relief valve takes over as an actuator in the pressure control loop the Pressure reduction function.
  • DE 195 48 278 describes a method and a device to regulate the pressure in a memory of a common rail system described. To control the pressure, a Control quantity drained from the accumulator into a low pressure area. Furthermore, it is provided that a second controller on the Low pressure area acts.
  • DE 197 31 994 describes a method and a device for controlling an internal combustion engine with a common rail System known in which a pressure control valve or pressure relief valve the rail with the fuel tank connected is.
  • the pressure control or release valve is via a Coil controllable.
  • the present invention is therefore based on the object the pressure reduction in certain individual operating points of the Internal combustion engine faster and faster via the pressure relief valve adapted to accomplish.
  • the invention has the main advantages that the pressure reduction according to a target pressure specification with high control quality. It this results in a minimization of the tax amount via the Pressure relief valve.
  • the use of the pressure relief valve structure is freely selectable in the engine operating map.
  • the valve seat wear at the pressure relief valve by adjusting the switching limits minimized (minimizing the number of switching operations).
  • the fuel denotes a fuel reservoir. This stands above a first filter 105, preferably one controllable feed pump 110 with a second filter 115 in Connection.
  • the fuel passes from the second filter 115 a line to a valve 120.
  • the connecting line stands between the filter medium 115 and the valve 120 Low pressure relief valve 140 with reservoir 100 in Connection.
  • the valve 120 is the metering unit ZME 122 and communicates with a high pressure pump 125.
  • the metering unit ZME is on the suction side of the high pressure pump arranged.
  • a solenoid-controlled proportional valve can be used can be controlled via the coil 122.
  • the high pressure pump is connected to a rail 130.
  • the rail is also called memory and survives Fuel lines with various injectors 131 in Contact.
  • Via a pressure control valve or pressure relief valve 135 is the rail 130 with the fuel tank 100 connectable.
  • the pressure control valve or pressure relief valve 135 can be controlled by means of a coil 136.
  • the lines between the outlet of the high pressure pump 125 and the inlet of the pressure control valve or pressure relief valve 135 are referred to as the high pressure area. In this area it says the fuel under high pressure.
  • the pressure in High pressure area, especially in the storage, is by means of a Sensor 145 detects.
  • the lines between the tank 100 and the High pressure pump 125 are referred to as a low pressure area.
  • a controller 160 includes a pressure regulator and acts on the corresponding control elements, such as for example, coil 136 of the pressure control valve or pressure relief valve 135 and / or the metering unit 122, with Control signals.
  • the controller 160 processes various Signals from various sensors 165 and 166 that the Operating state of the internal combustion engine and / or the Motor vehicle that drives the internal combustion engine characterize. Such an operating state is for example the speed N of the internal combustion engine or a Temperature value.
  • control system has further or controls other control elements.
  • control elements are used.
  • This facility works as follows: The fuel that is is located in the reservoir, the feed pump 110 promoted by the filter means 105 and 115. Output side of the pre-feed pump 110 is the fuel with a pressure of some bar.
  • the design of the low pressure area in particular the Arrangement of the valves and filters is only an example shown.
  • the type, arrangement and / or number of Items can also be different.
  • the high pressure pump 125 delivers the fuel from Low pressure area in the high pressure area.
  • the high pressure pump 125 builds up a very high pressure in the Rail 130.
  • Pressure values from about 30 to 100 bar and with auto-igniting Internal combustion engines pressure values from about 1000 to 2000 bar achieved.
  • the fuel can be injected via the injectors 131 high pressure of the individual cylinders of the internal combustion engine be measured.
  • the pressure in the rail or in the whole is measured by means of the sensor 145 High pressure area detected.
  • the pressure is on the metering unit ZME 120 regulated, which can be controlled with a coil 122 and which can adjust the delivery rate of the high pressure pump 125.
  • the pressure relief valve 135, which has a coil 136 can be controlled, the pressure in the high-pressure area can quickly be dismantled.
  • Mechanical feed pumps 110 are usually used Prefeed pumps used. But it can also Electric fuel pumps with a direct current motor (DC motors) or an electrically commutated DC motor (EC motors) can be used. For higher flow rates, the can be required in particular in the case of commercial vehicles several pre-feed pumps connected in parallel were also used become. In this case, because of the longer life and higher availability preferably used EC motors.
  • DC motors direct current motor
  • EC motors electrically commutated DC motor
  • the delivery rate QP is in the rail 130 funded. Via the pressure relief valve 135, the amount QDAV drained into the low pressure area. The amount of pressure build-up QR is available for pressure build-up. About the injectors 131, the metering quantity QI reaches the injectors 131. The quantity QI is made up of the amount of fuel injected QK, the amount of leakage and a control amount of the injectors. The Leakage amount and the tax amount get back into the Low pressure range. The amount of fuel injected arrives into the internal combustion engine.
  • ⁇ tein / aus represents the minimum time that elapses between an opening and an immediate closing process.
  • ⁇ traster is the time that is required to query the opening and closing process. The conditions apply: ⁇ on / off ⁇ traster + ⁇ aus, as well ⁇ out ⁇ traster
  • the first map Dp (p Rail) and the second map Dp to (p Rail) are dimensioned by the mathematical-physical relationships such that Dp (p Rail) the minimal displayable pressure difference Dp on for an opening and closing operation of the pressure Represents dismantling valve and the second characteristic diagram ⁇ p zu (p Rail ) represents the minimally acceptable pressure difference ⁇ p zu , which ensures that the pressure reducing valve can be closed without undershoot of the actual pressure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Fuel-Injection Apparatus (AREA)
EP00108928A 1999-09-30 2000-04-27 Méthode pour decroítre la pression dans le rail d'alimentation d'un moteur à combustion Withdrawn EP1088981A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1999146908 DE19946908A1 (de) 1999-09-30 1999-09-30 Verfahren zum Abbau des Rail-Drucks in einem Common-Rail-System für Brennkraftmaschinen
DE19946908 1999-09-30

Publications (2)

Publication Number Publication Date
EP1088981A2 true EP1088981A2 (fr) 2001-04-04
EP1088981A3 EP1088981A3 (fr) 2002-09-11

Family

ID=7923870

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00108928A Withdrawn EP1088981A3 (fr) 1999-09-30 2000-04-27 Méthode pour decroítre la pression dans le rail d'alimentation d'un moteur à combustion

Country Status (3)

Country Link
EP (1) EP1088981A3 (fr)
JP (1) JP2001115884A (fr)
DE (1) DE19946908A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1298306A2 (fr) * 2001-09-28 2003-04-02 Robert Bosch Gmbh Procédé pour faire fonctionner un moteur à combustion
FR2862092A1 (fr) * 2003-11-07 2005-05-13 Bosch Gmbh Robert Procede de gestion d'un moteur a combustion interne
US7848868B2 (en) 2006-09-05 2010-12-07 Denso Corporation Method and apparatus for pressure reducing valve to reduce fuel pressure in a common rail
EP2085596A3 (fr) * 2008-01-30 2016-03-16 Hitachi, Ltd. Injecteur de carburant pour moteur à combustion interne
DE102006035312B4 (de) 2005-12-27 2019-02-07 Denso Corporation Krafstoffeinspritzsteuereinrichtung
WO2020165333A1 (fr) * 2019-02-14 2020-08-20 Mtu Friedrichshafen Gmbh Procédé servant à faire fonctionner un système d'injection d'un moteur à combustion interne, système d'injection pour un moteur à combustion interne et moteur à combustion interne comprenant un système d'injection de ce type

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015205586B3 (de) * 2015-03-27 2016-04-07 Continental Automotive Gmbh Hochdruckeinspritzvorrichtung für einen Verbrennungsmotor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19548278A1 (de) 1995-12-22 1997-06-26 Bosch Gmbh Robert Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine
DE19731994A1 (de) 1997-07-25 1999-01-28 Bosch Gmbh Robert Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19607070B4 (de) * 1996-02-24 2013-04-25 Robert Bosch Gmbh Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine
JPH1054318A (ja) * 1996-08-09 1998-02-24 Denso Corp エンジン用蓄圧式燃料供給装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19548278A1 (de) 1995-12-22 1997-06-26 Bosch Gmbh Robert Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine
DE19731994A1 (de) 1997-07-25 1999-01-28 Bosch Gmbh Robert Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1298306A2 (fr) * 2001-09-28 2003-04-02 Robert Bosch Gmbh Procédé pour faire fonctionner un moteur à combustion
EP1298306A3 (fr) * 2001-09-28 2004-11-10 Robert Bosch Gmbh Procédé pour faire fonctionner un moteur à combustion
FR2862092A1 (fr) * 2003-11-07 2005-05-13 Bosch Gmbh Robert Procede de gestion d'un moteur a combustion interne
DE102006035312B4 (de) 2005-12-27 2019-02-07 Denso Corporation Krafstoffeinspritzsteuereinrichtung
US7848868B2 (en) 2006-09-05 2010-12-07 Denso Corporation Method and apparatus for pressure reducing valve to reduce fuel pressure in a common rail
EP2085596A3 (fr) * 2008-01-30 2016-03-16 Hitachi, Ltd. Injecteur de carburant pour moteur à combustion interne
WO2020165333A1 (fr) * 2019-02-14 2020-08-20 Mtu Friedrichshafen Gmbh Procédé servant à faire fonctionner un système d'injection d'un moteur à combustion interne, système d'injection pour un moteur à combustion interne et moteur à combustion interne comprenant un système d'injection de ce type
CN113874615A (zh) * 2019-02-14 2021-12-31 罗尔斯·罗伊斯解决方案有限公司 用于运行内燃机的喷入系统的方法、用于内燃机的喷入系统以及具有这样的喷入系统的内燃机
US11408365B2 (en) 2019-02-14 2022-08-09 Rolls-Royce Solutions GmbH Method for operating an injection system of an internal combustion engine, an injection system for an internal combustion engine, and an internal combustion engine including an injection system

Also Published As

Publication number Publication date
JP2001115884A (ja) 2001-04-24
DE19946908A1 (de) 2001-04-05
EP1088981A3 (fr) 2002-09-11

Similar Documents

Publication Publication Date Title
DE19548278B4 (de) Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine
EP0837986B1 (fr) Dispositif et procede pour la regulation de la pression de carburant dans un accumulateur haute pression
EP0970304B1 (fr) Procede et dispositif de regulation de la pression dans des systemes d'injection a accumulation avec un element d'ajustement de la pression
DE10162989C1 (de) Schaltungsanordnung zum Regeln einer regelbaren Kraftstoffpumpe, Verfahren zum Regeln einer Förderleistung und Verfahren zum Überprüfen der Funktionsfähigkeit einer regelbaren Kraftstoffpumpe
DE19731994B4 (de) Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine
EP1352174B1 (fr) Systeme d'injection de carburant avec regulation de la pression dans la conduite de retour
DE102010064374B3 (de) Kraftstoffeinspritzsystem einer Brennkraftmaschine sowie dazugehöriges Druckregelverfahren, Steuergerät und Kraftfahrzeug
DE102008001240A1 (de) Verfahren und Vorrichtung zur Steuerung eines Kraftstoffversorgungssystems
EP2006521B1 (fr) Procédé de réglage de la pression du rail lors d'un processus de démarrage
DE19731995B4 (de) Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine
WO2009056402A1 (fr) Procédé pour identifier un type de carburant
EP2054606B1 (fr) Procédé de détermination d'une valeur de consigne de pression de rampe
DE102009031528B3 (de) Verfahren zur Steuerung und Regelung einer Brennkraftmaschine
WO2010052119A1 (fr) Procédé et dispositif pour faire fonctionner un système d'injection destiné à un moteur à combustion interne
WO2011128163A1 (fr) Ensemble pompe
DE102007052092B4 (de) Verfahren und Kraftstoffsystem zum Steuern der Kraftstoffzufuhr für eine Brennkraftmaschine
DE102016211128A1 (de) Verfahren zum volumenstrombasierten Regeln eines durch eine Hochdruckpumpe bewirkten Kraftstoffraildrucks
EP1088981A2 (fr) Méthode pour decroítre la pression dans le rail d'alimentation d'un moteur à combustion
DE19731201C2 (de) Verfahren zum Regeln des Kraftstoffdruckes in einem Kraftstoffspeicher
DE19917711C2 (de) Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine
DE19735938B4 (de) Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine
DE102010004215B4 (de) Vorrichtung zur Verhinderung des Absterbens des Motors bei einem mit einem Dieseleinspritzsystem ausgestatteten Fahrzeug
EP1544447B1 (fr) Procédé et appareil pour commander un moteur à combustion interne
DE10257134A1 (de) Vorrichtung zur Aufrechterhaltung eines Solldruckes im Kraftstoff-Hochdruckspeicher eines Speichereinspritzsystems
DE10014223B4 (de) Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine

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: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20030311

AKX Designation fees paid

Designated state(s): DE FR GB IT

17Q First examination report despatched

Effective date: 20050510

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20051122