EP1321664A2 - Kraftstoffeinspritzsystem mit einer Vorrichtung zum Entlüften von Kraftstoff - Google Patents

Kraftstoffeinspritzsystem mit einer Vorrichtung zum Entlüften von Kraftstoff Download PDF

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Publication number
EP1321664A2
EP1321664A2 EP02027840A EP02027840A EP1321664A2 EP 1321664 A2 EP1321664 A2 EP 1321664A2 EP 02027840 A EP02027840 A EP 02027840A EP 02027840 A EP02027840 A EP 02027840A EP 1321664 A2 EP1321664 A2 EP 1321664A2
Authority
EP
European Patent Office
Prior art keywords
fuel
engine
temperature
pressure
cooling water
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.)
Granted
Application number
EP02027840A
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English (en)
French (fr)
Other versions
EP1321664B1 (de
EP1321664A3 (de
Inventor
Masatoyo Denso Corporation Osaki
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.)
Denso Corp
Original Assignee
Denso Corp
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Filing date
Publication date
Application filed by Denso Corp filed Critical Denso Corp
Publication of EP1321664A2 publication Critical patent/EP1321664A2/de
Publication of EP1321664A3 publication Critical patent/EP1321664A3/de
Application granted granted Critical
Publication of EP1321664B1 publication Critical patent/EP1321664B1/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/20—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines characterised by means for preventing vapour lock
    • 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
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
    • 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
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
    • F02D41/065—Introducing corrections for particular operating conditions for engine starting or warming up for starting at hot start or restart
    • 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
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators
    • 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
    • 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
    • F02M55/007—Venting means
    • 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
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • 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
    • F02D2200/0606—Fuel temperature

Definitions

  • an intake control valve for increasing the common rail pressure is disposed in the fuel supply pump.
  • the intake control valve regulates an opening degree of a fuel supply passage connecting the fuel tank with the pressurizing chamber.
  • the intake control valve changes the quantity of the fuel discharged by the fuel supply pump so that the common rail pressure is quickly increased, for instance, during an accelerating operation.
  • a pressure reducing valve for reducing the common rail pressure is disposed in the end of the common rail. The pressure reducing valve opens a fuel discharging passage connecting the common rail with the fuel tank to decrease the common rail pressure quickly, for instance, during a decelerating operation.
  • the high-pressure fuel passage is filled with the high-pressure fuel in the following engine starting operation or the idling operation immediately following the engine starting operation. Therefore, the fuel including the air and the like is not injected into cylinders of the engine even if the fuel injection valve is opened at predetermined injection timing. As a result, the injection quantity control during the engine starting operation and the idling operation immediately following the engine starting operation is stabilized.
  • An accumulation type fuel injection system shown in FIG. 1 is a common rail type fuel injection system known as a fuel injection system of an internal combustion engine such as a multi-cylinder diesel engine.
  • the common rail type fuel injection system accumulates high-pressure fuel in a common rail 1 and injects the fuel into respective cylinders of the engine at predetermined timing from a plurality of (four, in the embodiment) injectors 2 branching from the common rail 1.
  • the common rail 1 is required to continuously accumulate the fuel at a high pressure corresponding to a fuel injection pressure. Therefore, the high-pressure fuel is pressure-fed from a fuel supply pump 3 to the common rail 1 through a high-pressure fuel passage 11, a high-pressure pipe.
  • the pressure reducing valve 6 is the electromagnetic flow control valve
  • the pressure reducing valve 6 is constructed with a valve member for regulating the opening degree of the fuel recirculating passage 13 for recirculating the fuel from the common rail 1 to the fuel tank 5, an electromagnetic actuator such as a linear solenoid for biasing the valve member in an opening direction, a valve biasing member such as a spring for biasing the valve member in a closing direction, and the like.
  • the injectors 2 are connected to downstream ends of a plurality of high-pressure passages 12 branching from the common rail 1.
  • the injector 2 is an electromagnetic fuel injection valve having a nozzle for injecting fuel into each cylinder of the engine, a nozzle holder connected with the nozzle above the nozzle in FIG. 1, an electromagnetic actuator, or an injection controlling electromagnetic valve 4 for driving a nozzle needle disposed in the nozzle in an opening direction, and a biasing means such as a spring for biasing the nozzle needle in a closing direction.
  • the fuel injection from the injector 2 into the combustion chamber of each cylinder of the engine is electronically controlled by turning on and off of the energization to the injection controlling electromagnetic valve 4 that controls the fuel pressure in the back pressure controlling chamber. More specifically, during the injection controlling electromagnetic valve 4 is open, the high-pressure fuel accumulated in the common rail 1 is injected to the combustion chamber of each cylinder of the engine. Leak fuel overflowing from each injector 2 to the low-pressure part of the fuel system and return fuel discharged from the back pressure controlling chamber is returned to the fuel tank 5 through the fuel recirculating passages 15, 16.
  • the low-pressure fuel is drawn into the pressurizing chambers from the feed pump through the fuel intake passages.
  • the fuel supply pump 3 pressurizes the low-pressure fuel drawn into the pressurizing chambers.
  • the fuel pressure-feed passage is used for pressure-feeding the high-pressure fuel from the pressurizing chamber into the common rail 1 through a discharging outlet and the high-pressure pipe 11.
  • the intake control valve 7 is an electromagnetic flow control valve for controlling the quantity of the fuel drawn from the feed pump into the pressurizing chamber of the fuel supply pump 3.
  • the intake control valve 7 has a valve member for regulating the opening degree of the fuel passage or the fuel intake passage, an electromagnetic actuator such as a solenoid coil for driving the valve in an opening direction, a valve biasing means such as a spring for biasing the valve in a closing direction, and the like.
  • the ECU 10 has a commonly constructed microcomputer.
  • the microcomputer has functions of a CPU for performing control processing and calculation processing, a storage unit such as a ROM or an EEPROM, a RAM or a back-up RAM for storing various programs and data, an input circuit, an output circuit, a power source circuit, the pump driving circuit and the like.
  • the ECU 10 is connected with a starter energization circuit for energizing a starter for starting the engine. If an engine key is inserted into a key cylinder and is rotated to a position "ST", a starter switch is switched on and the ECU 10 switches on a starter relay of the starter energization circuit (STA ⁇ ON). Thus, the engine is cranked and is started.
  • an ignition switch When the engine key is inserted into the key cylinder and is rotated to a position "IG", an ignition switch is turned on (IG ⁇ ON). Then, the ECU 10 electronically controls actuators of various controlling parts such as the intake control valve 7, the injection controlling electromagnetic valve 4, the pressure reducing valve 6 and the starter relay, based on a control program stored in the storage unit. If the ignition switch is turned off (IG ⁇ OFF), the above processing by the ECU 10 based on the control program stored in the storage unit is forced to end.
  • the ECU 10 calculates the command injection quantity, the target injection quantity, based on information on the operating condition of the engine, such as the engine rotation speed NE and the accelerator position.
  • the ECU 10 calculates the command injection timing based on the engine rotation speed NE and the command injection quantity.
  • the ECU 10 calculates the injection pulse width based on the common rail pressure and the command injection quantity.
  • the ECU 10 applies the injection controlling electromagnetic valve 4 with the injector injection pulse corresponding to the injection pulse width at the command injection timing. Thus, the engine is operated.
  • An air quantity estimating means included in the pressure reducing valve controlling means estimates the quantity of the air entering the fuel supply pump 3 during the engine stopping period, in accordance with at least one of the cooling water temperature THW or the pump fuel temperature THF detected when the engine is started.
  • the pressure reducing valve controlling means calculates the optimum valve opening degree, the valve opening period ratio or the valve opening period in accordance with the estimated air quantity. Then, the pressure reducing valve controlling means outputs the pressure reducing valve driving signal corresponding to the calculated opening degree, the opening period ratio or the opening period to the pressure reducing valve 6.
  • step S25 determines whether the engine is in the idling operation immediately following the engine starting operation or not. More specifically, it is determined whether the engine rotation speed NE detected by the rotation speed sensor 21 is lower than the idling rotation speed M or not in step S26. If the result of the determination is "NO”, the operation proceeds to the processing in step S31, and after that, the flowchart in FIG. 4 is ended. If the result of the determination in step S26 is "YES", the following steps S27 to S31 are the same as steps S7 to S11 of the flowchart in FIG. 2 according to the first embodiment.
  • the driving duty ratio R D to the pressure reducing valve 6 and the driving period K of the pressure reducing valve 6 are calculated in accordance with the estimated air quantity Q A .
  • the driving duty ratio R D to the pressure reducing valve 6 and the driving period K of the pressure reducing valve 6 may be calculated in accordance with air quantity detected by an air quantity sensor disposed for detecting the air quantity of the air entering the high-pressure fuel passage.

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)
  • Output Control And Ontrol Of Special Type Engine (AREA)
EP20020027840 2001-12-14 2002-12-12 Kraftstoffeinspritzsystem mit einer Vorrichtung zum Entlüften von Kraftstoff Expired - Fee Related EP1321664B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2001381415 2001-12-14
JP2001381415 2001-12-14
JP2002310524 2002-10-25
JP2002310524A JP3901073B2 (ja) 2001-12-14 2002-10-25 蓄圧式燃料噴射装置

Publications (3)

Publication Number Publication Date
EP1321664A2 true EP1321664A2 (de) 2003-06-25
EP1321664A3 EP1321664A3 (de) 2007-10-31
EP1321664B1 EP1321664B1 (de) 2008-10-22

Family

ID=26625063

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020027840 Expired - Fee Related EP1321664B1 (de) 2001-12-14 2002-12-12 Kraftstoffeinspritzsystem mit einer Vorrichtung zum Entlüften von Kraftstoff

Country Status (3)

Country Link
EP (1) EP1321664B1 (de)
JP (1) JP3901073B2 (de)
DE (1) DE60229485D1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1816333A1 (de) * 2006-02-03 2007-08-08 Ford Global Technologies, LLC Verfahren und elektronische Regelvorrichtung zur Bestimmung des Kühlungsgrades während des Stillstands einer Brennkraftmaschine
DE102004036627B4 (de) * 2004-02-20 2009-12-31 Mitsubishi Denki K.K. Kraftstoffdruck-Regelvorrichtung eines Verbrennungsmotors
US7891340B2 (en) 2008-04-30 2011-02-22 Ford Global Technologies, Llc Feed-forward control in a fuel delivery system and leak detection diagnostics
EP2236796A3 (de) * 2009-03-25 2014-06-25 J.C. Bamford Excavators Ltd. Verfahren zum Betrieb einer Maschine mit Kompressionszündung
CN104141543A (zh) * 2013-05-09 2014-11-12 福特环球技术公司 高压燃料泵保护
DE102017222467A1 (de) * 2017-12-12 2019-06-13 Bayerische Motoren Werke Aktiengesellschaft Pumpenanordnung zur Förderung von Kraftstoff
CN112922733A (zh) * 2021-01-29 2021-06-08 浙江吉利控股集团有限公司 一种车辆首次排气起动控制方法、装置及设备

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4747953B2 (ja) * 2006-05-31 2011-08-17 井関農機株式会社 トラクタ
JP5004353B2 (ja) 2007-12-28 2012-08-22 ボッシュ株式会社 内燃機関の燃料供給装置及び燃料供給装置の制御装置
JP2009215993A (ja) * 2008-03-11 2009-09-24 Denso Corp 燃料噴射装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000282929A (ja) 1999-03-31 2000-10-10 Denso Corp 燃料噴射装置
JP2001082230A (ja) 1999-09-09 2001-03-27 Denso Corp 燃料噴射装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3939779B2 (ja) * 1995-05-26 2007-07-04 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング 内燃機関の燃料供給のための燃料供給装置
JP3842331B2 (ja) * 1995-05-26 2006-11-08 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング 内燃機関の燃料供給のための燃料供給装置及び内燃機関を運転する方法
JP3338620B2 (ja) * 1996-10-30 2002-10-28 株式会社ユニシアジェックス 直噴式ガソリン内燃機関の燃料供給装置
GB2332241B (en) * 1997-12-11 2001-12-19 Denso Corp Accumulator fuel injection system for diesel engine of automotive vehicles

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000282929A (ja) 1999-03-31 2000-10-10 Denso Corp 燃料噴射装置
JP2001082230A (ja) 1999-09-09 2001-03-27 Denso Corp 燃料噴射装置

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004036627B4 (de) * 2004-02-20 2009-12-31 Mitsubishi Denki K.K. Kraftstoffdruck-Regelvorrichtung eines Verbrennungsmotors
EP1816333A1 (de) * 2006-02-03 2007-08-08 Ford Global Technologies, LLC Verfahren und elektronische Regelvorrichtung zur Bestimmung des Kühlungsgrades während des Stillstands einer Brennkraftmaschine
US7891340B2 (en) 2008-04-30 2011-02-22 Ford Global Technologies, Llc Feed-forward control in a fuel delivery system and leak detection diagnostics
EP2236796A3 (de) * 2009-03-25 2014-06-25 J.C. Bamford Excavators Ltd. Verfahren zum Betrieb einer Maschine mit Kompressionszündung
CN104141543A (zh) * 2013-05-09 2014-11-12 福特环球技术公司 高压燃料泵保护
DE102017222467A1 (de) * 2017-12-12 2019-06-13 Bayerische Motoren Werke Aktiengesellschaft Pumpenanordnung zur Förderung von Kraftstoff
DE102017222467B4 (de) 2017-12-12 2020-06-18 Bayerische Motoren Werke Aktiengesellschaft Pumpenanordnung zur Förderung von Kraftstoff
CN112922733A (zh) * 2021-01-29 2021-06-08 浙江吉利控股集团有限公司 一种车辆首次排气起动控制方法、装置及设备

Also Published As

Publication number Publication date
JP3901073B2 (ja) 2007-04-04
DE60229485D1 (de) 2008-12-04
JP2003239823A (ja) 2003-08-27
EP1321664B1 (de) 2008-10-22
EP1321664A3 (de) 2007-10-31

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