EP2240678B1 - Procédé et dispositif de commande d un système de dosage du carburant d un moteur à combustion interne - Google Patents

Procédé et dispositif de commande d un système de dosage du carburant d un moteur à combustion interne Download PDF

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Publication number
EP2240678B1
EP2240678B1 EP08872193.1A EP08872193A EP2240678B1 EP 2240678 B1 EP2240678 B1 EP 2240678B1 EP 08872193 A EP08872193 A EP 08872193A EP 2240678 B1 EP2240678 B1 EP 2240678B1
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EP
European Patent Office
Prior art keywords
value
internal combustion
combustion engine
pressure
fuel pressure
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.)
Active
Application number
EP08872193.1A
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German (de)
English (en)
Other versions
EP2240678A1 (fr
Inventor
Guenter Veit
Stefan Keller
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
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Publication date
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Publication of EP2240678A1 publication Critical patent/EP2240678A1/fr
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Publication of EP2240678B1 publication Critical patent/EP2240678B1/fr
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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
    • 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/042—Introducing corrections for particular operating conditions for stopping the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/06—Fuel or fuel supply system parameters
    • F02D2200/0602—Fuel pressure
    • F02D2200/0604—Estimation of fuel pressure
    • 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/08—Introducing corrections for particular operating conditions for idling
    • 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/16—Introducing closed-loop corrections for idling
    • 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
    • F02D41/3845—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped
    • 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
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/0803—Circuits or control means specially adapted for starting of engines characterised by means for initiating engine start or stop
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop

Definitions

  • Modern internal combustion engines are often equipped with a so-called start-stop system.
  • a start-stop system is provided that, depending on the state of the internal combustion engine and / or the state of the driven vehicle, the internal combustion engine is switched off. This usually happens when the vehicle comes to a standstill. As soon as the driver wants to continue and this by the operation of a control element, such as the accelerator pedal indicates, the internal combustion engine starts automatically. see eg EP 0 886 058 A ,
  • the hydraulic components are significantly less stressed by the reduced pressure reduction / build-up cycle.
  • this is achieved by controlling the fuel pressure to a first value when the internal combustion engine is switched off.
  • the fuel pressure is controlled to a second value.
  • the second value corresponds to the value that is customary when the internal combustion engine is switched off.
  • the second value assumes the value zero or assumes a value which corresponds to the atmospheric pressure.
  • the first value corresponds to a fuel pressure used at idle.
  • the fuel pressure falls below a threshold value, the fuel pressure is controlled to a second value.
  • a controller is designated 100. This controls a controller 110.
  • the actuator 110 is a controller that controls the pressure in a fuel metering system.
  • the fuel metering system is preferably a so-called common rail system.
  • the actuator 110 may be formed as a so-called pressure regulating valve, which connects a high pressure region with a low pressure region.
  • the actuator 110 is controlled by the controller 100 such that the pressure in the high pressure region assumes a certain value. In a simplified embodiment, this may be designed as a controller and in an improved embodiment as a control. In this case, the pressure is detected and compared with a setpoint. Depending on the comparison, the controller 110 is then activated.
  • a controllable high-pressure pump can be designed as a controller to a pressure control valve. These can also be controlled in the sense of a control or in the sense of a regulation.
  • the controller 100 processes the output signals of various sensors 120. These are, in particular, a speed sensor and / or a pressure sensor, wherein the first one delivers a speed signal N and the second a pressure signal P which corresponds to the pressure in the high-pressure range. Furthermore, an automatic start-stop system 130 is provided, which supplies a signal S.
  • This start-stop control is designed to operate the engine at certain conditions of the vehicle and / or the internal combustion engine shuts off. For example, the engine is turned off when the automatic start-stop detects that the vehicle is stationary. If the start-stop control recognizes that the driver wants to continue the vehicle, the start-stop control starts the internal combustion engine and allows it to continue.
  • an operating element 140 which is operated by the driver and indicates whether the vehicle is operated or permanently put out of operation.
  • This is in particular an ignition switch which is designed as an ignition key or as a switching means which is actuated by the driver.
  • the state of this control indicates whether the driver wants to permanently disable the vehicle.
  • the vehicle is operated when the operating element 140 is actuated.
  • the internal combustion engine is usually switched off by the automatic start-stop system. If the driver indicates by appropriate actuation of the operating element 140 that he wants to permanently shut down the vehicle, then the internal combustion engine is likewise switched off. That is, the engine is turned on and off depending on the position of the operating member as well as the start-stop control 130.
  • the start-stop control recognizes that the vehicle is stopping.
  • the actuator 110 is controlled such that the rail pressure does not drop. If then a restart, the rail pressure is immediately available. If the driver actuates the operating element 140 after stopping, then this is also detected and the actuator 110 is controlled such that the rail pressure drops to the value that is usually present when the vehicle is switched off.
  • This value to which the rail pressure is lowered, usually assumes the value zero.
  • embodiments are also possible in which the rail pressure is set to a different value.
  • a first query 200 checks whether the operating element 140 is activated in such a way that the driver wants to shut down the vehicle. If this is the case, then in step 210, the actuator 110 is controlled such that the fuel pressure assumes a second value, which is usually present when the internal combustion engine is switched off.
  • inquiry 200 detects that a corresponding signal from control element 140 is not present
  • query 220 checks whether a start-stop control 130 emits a signal indicating that the internal combustion engine has been switched off. If this is not the case, then in step 225, the actuator is controlled such that the fuel pressure assumes its usual value. This value is usually specified depending on the operating state of the internal combustion engine. This is preferably realized by specifying a corresponding desired value for the rail pressure or a corresponding control value for the actuator 110.
  • the query 230 follows. This query 230 checks whether there is another condition. In particular, this inquiry 230 checks whether the fuel pressure P is less than a threshold value PS. If this is the case, then the actuator 110 is controlled in step 210 such that the rail pressure is lowered to the value that is usually present when the internal combustion engine is switched off. If the query 230 recognizes that the value P of the rail pressure is not smaller than the threshold value PS, the query 240 checks whether the rotational speed N is greater than a threshold value.
  • the actuator 110 is activated in step 250 such that the rail pressure is set to a first value.
  • This first value is usually chosen to correspond to the value used at idle. Is the value of the speed N greater as the threshold, so in step 210 is controlled so that the fuel pressure assumes the second value.
  • the actuator 110 is activated in step 220 such that it assumes an operating-point-dependent value.
  • step 210 the actuator 110 is actuated in such a way that the fuel pressure assumes a second value.
  • This second value corresponds to the value that the rail pressure usually assumes when the internal combustion engine is put out of operation for a long time.
  • This value usually corresponds to the value of the ambient pressure.
  • the actuator 110 is actuated such that the rail pressure is a third Takes value.
  • This third value is usually dependent on the operating state of the internal combustion engine, in particular the speed and the load of the internal combustion engine, predetermined. At this third value, the pressure during operation of the internal combustion engine is controlled or regulated.
  • the actuator 110 is controlled such that the fuel pressure assumes a first value. This value is usually greater than the second value.
  • the first value is chosen so that it allows a quick start of the internal combustion engine.
  • a common rail system with a pressure control valve is therefore provided that the pressure control valve is not opened when switching off the internal combustion engine by the start-stop control. Ie. in a common rail system with pressure control valve, the pressure control valve is opened in step 210. In Steps 225 and 250, however, the pressure control valve is kept closed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Claims (4)

  1. Procédé de commande d'un système de dosage de carburant, la pression de carburant étant commandée en fonction de l'état de fonctionnement du moteur à combustion interne, que lors de l'arrêt du moteur à combustion interne, la pression de carburant est commandée à une première valeur qui est utilisée au ralenti et la pression de carburant est commandée à une deuxième valeur qui est usuelle lorsque le moteur à combustion interne est arrêté quand le véhicule entraîné par le moteur à combustion interne est arrêté.
  2. Procédé selon la revendication 1, caractérisé en ce que la pression de carburant est commandée à la deuxième valeur lorsque la pression de carburant tombe en dessous d'une valeur seuil.
  3. Procédé selon la revendication 1, caractérisé en ce que la pression de carburant est amenée à une valeur dépendant du point de fonctionnement lorsque le régime monte au-dessus d'une valeur de régime déterminée.
  4. Dispositif de commande d'un système de dosage de carburant, dans lequel la pression de carburant est commandée en fonction de l'état de fonctionnement du moteur à combustion interne, comprenant des moyens qui, lors de l'arrêt du moteur à combustion interne, commandent la pression de carburant à une première valeur qui est utilisée au ralenti, et qui commandent la pression de carburant à une deuxième valeur qui est usuelle lorsque le moteur à combustion interne est arrêté lorsque le véhicule entraîné par le moteur à combustion interne est arrêté.
EP08872193.1A 2008-02-06 2008-11-14 Procédé et dispositif de commande d un système de dosage du carburant d un moteur à combustion interne Active EP2240678B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008007668A DE102008007668A1 (de) 2008-02-06 2008-02-06 Verfahren und Vorrichtung zur Steuerung eines Kraftstoffzumesssystems einer Brennkraftmaschine
PCT/EP2008/065525 WO2009097921A1 (fr) 2008-02-06 2008-11-14 Procédé et dispositif de commande d’un système de dosage du carburant d’un moteur à combustion interne

Publications (2)

Publication Number Publication Date
EP2240678A1 EP2240678A1 (fr) 2010-10-20
EP2240678B1 true EP2240678B1 (fr) 2017-03-22

Family

ID=40329399

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08872193.1A Active EP2240678B1 (fr) 2008-02-06 2008-11-14 Procédé et dispositif de commande d un système de dosage du carburant d un moteur à combustion interne

Country Status (5)

Country Link
US (1) US20120037122A1 (fr)
EP (1) EP2240678B1 (fr)
CN (1) CN101939523B (fr)
DE (1) DE102008007668A1 (fr)
WO (1) WO2009097921A1 (fr)

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DE102009028739A1 (de) * 2009-08-20 2011-03-31 Ford Global Technologies, LLC, Dearborn Schnellstart eines Common Rail-Systems
DE102009061750B3 (de) 2009-08-20 2021-09-09 Ford Global Technologies, Llc Schnellstart eines Common Rail-Systems
JP5131265B2 (ja) * 2009-12-24 2013-01-30 株式会社デンソー 燃料圧力制御装置
DE102010001121A1 (de) 2010-01-22 2011-07-28 Robert Bosch GmbH, 70469 Kraftstoffeinspritzsystem und Verfahren zum Steuern einer Kraftstoffpumpe
JP5110109B2 (ja) * 2010-03-16 2012-12-26 株式会社デンソー 燃料圧力制御装置
JP5141706B2 (ja) * 2010-03-19 2013-02-13 株式会社デンソー 燃料圧力制御装置
DE102010028910A1 (de) 2010-05-12 2011-11-17 Robert Bosch Gmbh Verfahren zum Bereitstellen eines für ein Wiederanlassen einer Common-Rail-Brennkraftmaschine ausreichenden Raildrucks
KR101905553B1 (ko) * 2012-10-31 2018-11-21 현대자동차 주식회사 가솔린 직분사 엔진의 제어 시스템 및 제어 방법
DE102013200553A1 (de) 2013-01-16 2014-07-17 Robert Bosch Gmbh Verfahren zur Gewährleistung einer Betriebsfestigkeit einer Population von Common-Rail-Systemen
DE102013200554A1 (de) 2013-01-16 2014-07-17 Robert Bosch Gmbh Verfahren zum Bereitstellen eines Drucks in einem Common Rail
DE102013204230A1 (de) 2013-03-12 2014-09-18 Robert Bosch Gmbh Verfahren zum Bereitstellen eines Raildrucks in einem Common-Rail-System
DE102013214831A1 (de) 2013-07-30 2015-02-05 Robert Bosch Gmbh Verfahren zum Vorbereiten eines Startens einer Brennkraftmaschine
FR3013395B1 (fr) * 2013-11-19 2015-12-11 Renault Sas Procede et systeme d'alimentation en gazole d'un vehicule automobile.
JP6287889B2 (ja) 2015-02-19 2018-03-07 トヨタ自動車株式会社 多気筒内燃機関の制御装置
KR101714179B1 (ko) 2015-07-27 2017-03-08 현대자동차주식회사 Ｉｓｇ 재시동시 디젤엔진 레일압 제어방법 및 디젤 ｉｓｇ 차량
DE102015220098B3 (de) * 2015-10-15 2017-02-16 Continental Automotive Gmbh Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine mit einem Hochdruck-Kraftstoffeinspritzsystem
JP6677585B2 (ja) * 2016-06-21 2020-04-08 株式会社Ｓｕｂａｒｕ 燃料供給装置

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Also Published As

Publication number Publication date
CN101939523B (zh) 2016-07-06
US20120037122A1 (en) 2012-02-16
CN101939523A (zh) 2011-01-05
EP2240678A1 (fr) 2010-10-20
DE102008007668A1 (de) 2009-08-13
WO2009097921A1 (fr) 2009-08-13

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