[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

EP2246550B1 - Control device for common-rail system in abnormal condition - Google Patents

Control device for common-rail system in abnormal condition Download PDF

Info

Publication number
EP2246550B1
EP2246550B1 EP08872836.5A EP08872836A EP2246550B1 EP 2246550 B1 EP2246550 B1 EP 2246550B1 EP 08872836 A EP08872836 A EP 08872836A EP 2246550 B1 EP2246550 B1 EP 2246550B1
Authority
EP
European Patent Office
Prior art keywords
fuel
abnormality
rail pressure
rail
common rail
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.)
Not-in-force
Application number
EP08872836.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2246550A1 (en
EP2246550A4 (en
Inventor
Kouji Okayasu
Yuji Sasaki
Hiroyuki Ohnishi
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Publication of EP2246550A1 publication Critical patent/EP2246550A1/en
Publication of EP2246550A4 publication Critical patent/EP2246550A4/en
Application granted granted Critical
Publication of EP2246550B1 publication Critical patent/EP2246550B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • 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
    • 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
    • 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
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • F02D2041/224—Diagnosis of the fuel system
    • 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
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • F02D2041/224—Diagnosis of the fuel system
    • F02D2041/225—Leakage detection
    • 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
    • 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
    • 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 present invention relates to an abnormality control system for a common rail system, and in particular to a technology for controlling faulty detections in low temperature conditions.
  • a particularly preferred form of electronically controlled fuel injection systems for diesel engines is the common rail fuel injection system that draws fuel from a fuel tank by using a low pressure pump (feed pump), pressurizes the drawn fuel by using a high pressure pump (supply pump) which is mechanically actuated by the engine, stores the pressurized fuel in a common rail, and distributes the fuel stored in the common rail to the fuel injection valves of the different cylinders.
  • feed pump low pressure pump
  • supply pump high pressure pump
  • a common rail system is typically equipped with an abnormality detection system that detects the occurrence of fuel leakage by comparing a target output (pressure compensation value) set for a fuel output control valve for controlling the output of the supply pump with a prescribed reference value, and determining the occurrence of fuel leakage according to the result of this comparison. See Japanese patent No. 3147460 .
  • an abnormality detection system to avoid incorrectly detecting fuel leakage, the detection of fuel leakage is temporarily prohibited under certain operating conditions of the engine which involve rapid changes in the pressure of the fuel supply system, and could cause significant changes in the target output or target pressure control value.
  • a primary object of the present invention is to provide an abnormality control system for a common rail system that can prevent an incorrect abnormality detection in low temperature conditions.
  • an abnormality control system for a common rail system in accordance with claim 1.
  • the common rail system comprises a supply pump (65) for pressurizing fuel to a prescribed pressure, a common rail (7) for storing the pressurized fuel, a fuel injection valve (8) for injecting the fuel in the common rail into a combustion chamber of an internal combustion engine (E), a rail pressure detector (75) for detecting a rail pressure in the common rail, and an output control unit (72) for controlling an output of the supply pump according to a result of comparison between the rail pressure detected by the rail pressure detector and a target rail pressure, the abnormality control system being configured to determine an occurrence of abnormality and to execute a prescribed abnormality control process when a difference between the rail pressure detected by the rail pressure detector and the target rail pressure exceeds an abnormality determination threshold value.
  • the abnormality control system comprises a fuel temperature sensor for detecting a temperature of the fuel, and an abnormality determination canceling unit that cancels an execution of the abnormality control process when
  • the present invention provides an abnormality control system according to claim 2.
  • the abnormality control process comprises lighting of an alarm lamp.
  • the common rail system comprises a fuel heater.
  • the abnormality determination canceling unit cancels the execution of the abnormality control process so that the vehicle operator is prevented from experiencing anxiety or being otherwise discomforted by an unnecessary warning such as lighting of a fuel leakage warning lamp.
  • the output of the supply pump is reduced so that the load of the supply pump is reduced, and an erroneous detection of fuel leakage can be avoided because the abnormality control process is executed only after the rail pressure has risen to a prescribed level.
  • the vehicle operator is notified of an abnormal condition of the fuel supply system, and is allowed to bring the vehicle to a repair shop.
  • the fuel temperature progressively rises, and the blockage of the fuel piping system due to waxing can be eliminated in a relatively short period of time.
  • Figure 1 generally illustrates the overall structure of the engine system of the first example
  • Figure 2 is a block diagram showing how an engine ECU is connected to various components in the first example
  • Figure 3 is a simplified block diagram showing the overall structure of an abnormality detecting unit of the first example.
  • the engine system 1 of the first embodiment comprises, in association with an inline four-cylinder diesel engine (internal combustion engine; referred to simply as "engine” in the following description) E, an intake system including an air cleaner 2, an intake pipe 3 and an intake manifold 4, an exhaust system including an exhaust manifold 5 and an exhaust pipe 6 and a fuel supply/injection system (common rail system) including a common rail 7 and electronically controlled fuel injection valves 8.
  • an engine ECU (electronic control unit) 9 is provided inside the cabin of the vehicle, and an accelerator pedal 10 is provided adjacent to the driver's seat for a vehicle operator to use.
  • Each cylinder of the engine E is fitted with a glow plug 48 to warm up the cylinder head when cold starting the engine.
  • VG turbo variable geometry turbocharger
  • the intake pipe 3 is provided with an intercooler 12 for cooling the intake air which is heated as a result of pressurization by the VG turbo 11 and an electrically actuated intake shutter 13 for restricting the intake air flow in a prescribed operating range.
  • an electrically actuated swirl control valve 14 for increasing the intake flow velocity by narrowing the cross section of the flow passage in a prescribed low-rpm, low load operating range.
  • the intake manifold 4 and exhaust manifold 5 are connected to each other via an EGR (exhaust gas recirculation) passage 21 to conduct hot exhaust gas to the combustion chambers.
  • EGR exhaust gas recirculation
  • a middle part of the EGR passage 21 is branched into an EGR cooler 21a and a bypass passage 21b, and a converging part of these two passages is provided with a switch valve 22.
  • an EGR control valve 23 for adjusting the amount of exhaust gas (EGR gas) that flows into the combustion chambers.
  • the exhaust pipe 6 is connected to an exhaust gas cleaning device 34 including a DOC (diesel oxide catalyst) 31, a DPF (diesel particulate filter) 32 and a LNC (lean Nox catalyst) 33 which are connected in series along the direction of the exhaust gas flow.
  • DOC diesel oxide catalyst
  • DPF diesel particulate filter
  • LNC lean Nox catalyst
  • the engine E is provided with a crank angle sensor 41 for detecting a crank angle of the engine and a water temperature sensor 42 for detecting a cooling water temperature of the engine.
  • the accelerator pedal 10 is provided with an accelerator pedal sensor 43 that detects a depression stroke of the accelerator pedal 10.
  • the intake system includes an intake flow rate sensor 44 and an intake air temperature sensor 45 provided immediately downstream of the air cleaner 2, and an upstream end intake pressure sensor 46 and an upstream end intake air temperature sensor 47 provided between the intercooler 12 and intake shutter 13.
  • the intake system further comprises a shutter opening angle sensor for detecting an opening angle of the intake shutter 13, a downstream end intake pressure sensor for detecting an intake pressure downstream of the intake shutter 13 and a downstream end intake air temperature sensor for detecting an intake temperature downstream of the intake shutter 13.
  • the exhaust system includes a first exhaust temperature sensor 51 and a first LAF (linear air fuel ratio) sensor 52 provided immediately downstream of the VG turbo 11, a second exhaust temperature sensor 53 provided between the DOC 31 and DPF 32, a second LAF sensor 54 provided between the DPF 32 and LNC 33, and a third exhaust temperature sensor 55 and a third LAF sensor 56 provided downstream of the LNC 33.
  • a first LAF (linear air fuel ratio) sensor 52 provided immediately downstream of the VG turbo 11
  • second exhaust temperature sensor 53 provided between the DOC 31 and DPF 32
  • a second LAF sensor 54 provided between the DPF 32 and LNC 33
  • a third exhaust temperature sensor 55 and a third LAF sensor 56 provided downstream of the LNC 33.
  • the common rail system essentially consists of a feed pump 62 provided inside a fuel tank 61, a fuel filter 64 for removing moisture and foreign matters contained in the fuel, a supply pump (two-cylinder plunger pump) 65 actuated by the engine to pressurize the fuel and the common rail 7 for storing the pressurized fuel.
  • the fuel filter 64 is provided with a fuel heater 71 for heating the fuel in low temperature conditions.
  • the supply pump 65 is provided with an output control valve 72 for controlling the pump output and a fuel temperature sensor 73 for detecting the temperature of the fuel.
  • the common rail 7 is provided with a rail pressure control valve 74 for controlling the rail pressure and a rail pressure sensor 75 for detecting the rail pressure.
  • the feed pump 62, fuel filter 64 and supply pump 65 are connected to one another by feed pipes 81 and 82, and the supply pump 65 is connected to the common rail 7 via supply pipes 83 and 84.
  • the common rail 7 is connected to the fuel injection valves 8 via delivery pipes 85.
  • the output control valve 72 and rail pressure control valve 74 are connected to the fuel tank 61 via a drain pipe 86 to return excess fuel back to the fuel tank 61.
  • the engine ECU 9 essentially consists of a microcomputer, ROM, RAM, peripheral circuits, an input/output interface and various drivers. As shown in Figure 2 , the engine ECU 9 receives detection signals from the above mentioned sensors, and forwards drive signals to the above mentioned components such as the fuel injection valves 8, VG turbo, supply pump 65 and so on. The engine ECU 9 is also connected to various other sensors and engine control devices, but it is omitted from the description.
  • the engine ECU 9 includes an abnormality detecting unit 91 which is outlined in Figure 3 .
  • the abnormality detecting unit 91 includes a pressure difference detector 92, a waxing detecting unit (abnormality determination canceling unit) 93, and a fuel leakage detecting unit 94 that detects the occurrence of fuel leakage according to the outputs of the pressure difference detector 92 and waxing detecting unit 93.
  • the pressure difference detector 92 computes a pressure difference ⁇ Pr between the target rail pressure Prtgt and detected rail pressure Prr, and forwards the pressure difference to the fuel leakage detecting unit 94.
  • the waxing detecting unit 93 forwards a waxing detection signal to the fuel leakage detecting unit 9 typically when the fuel temperature is low, and additionally forwards an output reduction flag to the output control unit.
  • the engine ECU 9 controls the operation of the engine by looking up the target fuel injection amount, target supercharge pressure and target rail pressure by using maps not shown in the drawings or otherwise determining such variables according to the detections signals of the various sensors, and drives the fuel injection valves 8, VG turbo 11 and supply pump 65 in a corresponding manner.
  • the engine ECU 9 of the illustrated embodiment cyclically executes a fuel leakage determining process as depicted in the flowchart of Figure 4 at a prescribed processing interval (10 ms, for instance) in parallel with the startup and operation control of the engine
  • the abnormality detecting unit 91 Upon starting of a fuel leakage determining process, the abnormality detecting unit 91 computes a pressure difference ⁇ Pr between a target rail pressure Prtgt received from a rail pressure setting unit not shown in the drawings and a rail pressure detection value Prr received from the rail pressure sensor 75 in step S1 in the flowchart of Figure 4 , and then determines if the pressure difference ⁇ Pr is higher than a rail pressure drop detection threshold value (abnormality detection threshold value) Prth in step S2.
  • the abnormality detecting unit 91 determines that there is no abnormality in the fuel system, and resets an output reduction flag Ffc (which is described hereinafter) having an initial value of 0 and a fuel leakage flag Ffl (which is described hereinafter) both back to 0 in step S3 and step S4, respectively. Thereafter, the program flow returns to start.
  • the abnormality detecting unit 91 sets an abnormality code Cerr to 1 in step S5, sets the output reduction flag Ffc to 1 in step S6, and determines if the fuel temperature Tf received from the fuel temperature sensor 73 is higher than a waxing detection threshold value Tfth in step S7.
  • the abnormality code Cerr is a code indicating the possibility of leakage in the fuel system, and is stored in a storage device (not shown in the drawings) of the engine ECU 9.
  • the output reduction flag Ffc is a flag forwarded to an output control unit (not shown in the drawings) of the engine ECU 9. When the value of the output reduction flag Ffc is 1, an output reduction command is forwarded from the output control unit to the output control valve 72 so that the load of the supply pump 65 is prevented from being excessive even when there is blockage in the fuel piping system caused by waxing.
  • the abnormality detecting unit 91 sets the fuel leakage flag Ffl to 1 in step S8 as a case of leakage in the fuel system.
  • the fuel leakage flag Ffl is forwarded to a fuel leakage processing unit (not shown in the drawings) of the engine ECU 9.
  • a fuel leakage processing unit not shown in the drawings
  • an abnormality process (such as lighting up a fuel leakage warning lamp, special rail pressure control at the time of fuel leakage, etc.) is executed. Thereby, the vehicle operator may be notified of an abnormal condition by the lighting up of the fuel leakage warning lamp in the instrument panel, and allowed to bring the vehicle to a repair shop.
  • step S7 determines that the fuel piping (such as the feed pipes 81 and 82 and supply pipe 83) may be blocked up due to waxing, and sets the fuel leakage flag Ffl to 0 in step S4 as a measure to prevent an erroneous leakage detection. Thereafter, the program flow returns to start.
  • the fuel piping such as the feed pipes 81 and 82 and supply pipe 83
  • the fuel forwarded from the feed pump 62 to the supply pump 65 is in part supplied to the fuel injection valves 8 via the common rail 7, and the remaining part of the fuel returns to the fuel tank 61 via the output control valve 72, rail pressure control valve 74 and drain pipe 86.
  • the fuel is warmed up by the fuel heater 71 provided in the fuel filter 64 and other heat sources.
  • the fuel temperature Tf progressively rises.
  • step S2 causes the determination result of step S2 to No.
  • the abnormality detecting unit 91 then resets the output reduction flag Ffc to 0 in step S3, and the program flow returns to start.
  • the output reduction command ceases to be forwarded to the output control valve 72, and the supply pump 65 is operated so as to achieve the target rail pressure Pretgt.
  • the abnormality code Cerr is kept stored in a storage device of the engine ECU 9 until the engine E is shut down.
  • the abnormality detecting unit 91 sets the fuel leakage flag Ffl to 1 in step S8. In such a case, the vehicle operator is notified of an abnormal condition by the lighting up of the fuel leakage warning lamp in the instrument panel, and allowed to bring the vehicle to a repair shop.
  • the second example is similar to the first example except for a part of the fuel leakage determining process. Therefore, the part of the structure of the second example similar to that of the first example, including the flags in the fuel leakage determining process, is omitted from the following description.
  • the abnormality detecting unit 91 Upon starting of the fuel leakage detecting process, the abnormality detecting unit 91 computes a pressure difference ⁇ Pr between a target rail pressure Prtgt received from a rail pressure setting unit not shown in the drawings and a rail pressure detection value Prr received from the rail pressure sensor 75 in step S11 in the flowchart of Figure 5 . It is then determines if the pressure difference ⁇ Pr is greater than a rail pressure drop detection threshold value (abnormality detection threshold value) Prth in step S12.
  • the abnormality detecting unit 91 determines that there is no abnormality in the fuel system, and resets an output reduction flag Ffc having an initial value of 0 and a fuel leakage flag Ffl both back to 0 in step S13 and step S14, respectively, similarly as in the first embodiment. Thereafter, the program flow likewise returns to start.
  • step S12 When the determination result of step S12 is Yes, the abnormality detecting unit 91 sets an abnormality code Cerr to 1 in step S15, sets the output reduction flag Ffc to 1 in step S16, and determines if the fuel temperature Tf is higher than a waxing detection threshold value Tfth in step S17. If the determination result of step S17 is also Yes, the abnormality detecting unit 91 sets the fuel leakage flag Ffl to 1 in step S18. Thereby, the vehicle operator may be notified of an abnormal condition by the lighting up of the fuel leakage warning lamp in the instrument panel, and allowed to bring the vehicle to a repair shop.
  • the abnormality detecting unit 91 increments a determination delay timer Td which has an initial value of 0 by 1 in step S19, and determines if the value of the determination delay timer Td has reached a count-up value Tdmax in step S20.
  • the count-up value Tdmax is set such that the fuel temperature has risen to a sufficient level by the operation of the engine E.
  • the abnormality detecting unit 91 sets the fuel leakage flag Ffl to 0 in step S14 as there may be a blockage in the fuel piping owing to waxing before the program flow returns to start.
  • the abnormality detecting unit 91 sets the fuel leakage flag Ffl to 1 in step S18. Thereby, the vehicle operator may be notified of an abnormal condition by the lighting up of the fuel leakage warning lamp in the instrument panel, and allowed to bring the vehicle to a repair shop.
  • step S12 As the fuel temperature Tf rises, and waxing disappears, the pressure difference ⁇ Pr diminishes, and the determination result of step S12 eventually changes to No.
  • the abnormality detecting unit 91 then resets the output reduction flag Ffc to 0 in step S13, and the program flow returns to start. As a result, the output reduction command ceases to be forwarded to the output control valve 72, and the supply pump 65 is operated so as to achieve the target rail pressure Pretgt.
  • the fuel leakage can be determined at a high precision in spite of the possible blockage of the fuel piping owing to waxing so that the vehicle operator may be prevented from experiencing unnecessary discomfort or unnecessary trouble of bringing the vehicle to a repair shop.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Fuel-Injection Apparatus (AREA)
EP08872836.5A 2008-02-25 2008-11-18 Control device for common-rail system in abnormal condition Not-in-force EP2246550B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008042874A JP2009197756A (ja) 2008-02-25 2008-02-25 コモンレールシステムの異常判定装置
PCT/JP2008/003365 WO2009107175A1 (ja) 2008-02-25 2008-11-18 コモンレールシステムの異常時制御装置

Publications (3)

Publication Number Publication Date
EP2246550A1 EP2246550A1 (en) 2010-11-03
EP2246550A4 EP2246550A4 (en) 2011-07-13
EP2246550B1 true EP2246550B1 (en) 2014-07-23

Family

ID=41015589

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08872836.5A Not-in-force EP2246550B1 (en) 2008-02-25 2008-11-18 Control device for common-rail system in abnormal condition

Country Status (3)

Country Link
EP (1) EP2246550B1 (ja)
JP (1) JP2009197756A (ja)
WO (1) WO2009107175A1 (ja)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010050853A1 (de) * 2010-11-09 2012-05-10 GPI Ges. f. Prüfstanduntersuchungen und Ingenieurdienstleistungen mbH Verfahren und Vorrichtung zum Betrieb eines Kraftstoffsystems
JP5630462B2 (ja) * 2012-06-19 2014-11-26 株式会社デンソー 燃料噴射制御装置
DE102013213506B4 (de) * 2012-10-15 2023-06-15 Vitesco Technologies GmbH Verfahren zum Betreiben eines Kraftstoffeinspritzsystems mit einer Kraftstofffilterheizung und Kraftstoffeinspritzsystem
JP6208048B2 (ja) * 2014-03-04 2017-10-04 日野自動車株式会社 コモンレールの圧力異常判定装置
SE540092C2 (en) 2016-07-12 2018-03-20 Scania Cv Ab Method and system for diagnosing unintended fuel from fuel injectors of an engine
DE102017206416B3 (de) * 2017-04-13 2018-08-02 Mtu Friedrichshafen Gmbh Verfahren zum Ermitteln eines dauereinspritzenden Brennraums, Einspritzsystem und Brennkraftmaschine mit einem solchen Einspritzsystem
KR102299336B1 (ko) * 2017-07-05 2021-09-09 현대자동차주식회사 커먼레일시스템의 고장 진단방법
CN110005536B (zh) * 2019-06-06 2019-09-03 潍柴动力股份有限公司 一种轨压传感器的校验方法、装置及发动机
CN111365137B (zh) * 2020-03-27 2022-08-19 潍柴重机股份有限公司 一种高压油管燃油泄漏报警装置及报警方法
CN112555036B (zh) * 2020-11-30 2022-06-17 广西玉柴机器股份有限公司 一种发动机超速保护的方法及发动机控制器
US20230016408A1 (en) * 2021-07-19 2023-01-19 Pratt & Whitney Canada Corp. Detecting a fuel leak in an engine fuel system
CN116104658A (zh) * 2022-08-16 2023-05-12 长城汽车股份有限公司 发动机高轨压报警保护方法及相关装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10257655A1 (de) * 2001-12-11 2003-07-17 Denso Corp Akkumulations-Kraftstoffeinspritzvorrichtung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3147460B2 (ja) * 1991-04-26 2001-03-19 株式会社デンソー 内燃機関の燃料噴射装置
JPH08338339A (ja) * 1995-06-15 1996-12-24 Isuzu Motors Ltd ディーゼルエンジン
JP3995118B2 (ja) * 1995-11-09 2007-10-24 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 高圧燃料噴射装置付き内燃機関における燃料供給系の漏れ識別方法及び装置
JP3879137B2 (ja) * 1996-04-08 2007-02-07 株式会社デンソー 蓄圧式燃料噴射装置
JPH1182134A (ja) * 1997-09-03 1999-03-26 Fuji Heavy Ind Ltd 筒内燃料噴射エンジンの高圧燃料系診断装置及び制御装置
JP4343470B2 (ja) * 2001-12-11 2009-10-14 株式会社デンソー 燃料噴射装置
JP2004225630A (ja) * 2003-01-23 2004-08-12 Denso Corp 蓄圧式燃料噴射システム

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10257655A1 (de) * 2001-12-11 2003-07-17 Denso Corp Akkumulations-Kraftstoffeinspritzvorrichtung

Also Published As

Publication number Publication date
EP2246550A1 (en) 2010-11-03
JP2009197756A (ja) 2009-09-03
WO2009107175A1 (ja) 2009-09-03
EP2246550A4 (en) 2011-07-13

Similar Documents

Publication Publication Date Title
EP2246550B1 (en) Control device for common-rail system in abnormal condition
US6781098B2 (en) Heater controller for an oxygen sensor
US7363918B2 (en) Controller of pressure accumulation fuel system
US7167790B2 (en) Engine control system
US7822534B2 (en) Fuel supply device and fuel supply method for internal combustion engine
CN101657614A (zh) 内燃发动机的二次空气供给系统及二次空气供给方法
JP4438712B2 (ja) 内燃機関の制御装置
US10920629B2 (en) Oil temperature sensor diagnostic device
US20070283935A1 (en) Fuel pump control apparatus for internal combustion engine
US8156736B2 (en) Exhaust hydrocarbon injection control system and method
JP5905795B2 (ja) 燃料圧力制御装置
EP2112358B1 (en) Fuel injection amount learning control apparatus
US8286472B2 (en) Diagnostic system for variable valve timing control system
US10323592B2 (en) Exhaust gas recirculation (EGR) control device for engine including an EGR amount increase control
JP2005248739A (ja) 噴射量学習制御装置
JP2009250060A (ja) 内燃機関の制御装置
JP3642169B2 (ja) エンジンのｅｇｒ診断装置
US20160348607A1 (en) Control system for engine
JP5161354B2 (ja) コモンレールシステムの異常判定装置
JP4637036B2 (ja) 内燃機関の制御装置
AU2012358130A1 (en) Method and device for controlling the fuel supply of an internal combustion engine operated with liquefied gas
JP2006161675A (ja) 内燃機関の燃料系統診断装置
CN111005813A (zh) 用于计算燃料蒸汽双净化系统的燃料喷射量的方法和系统
JP2007056818A (ja) 内燃機関の燃料温度推定装置及び内燃機関の制御装置
JP2009057865A (ja) 燃料噴射制御装置及び燃料噴射システム

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

17P Request for examination filed

Effective date: 20100709

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20110610

17Q First examination report despatched

Effective date: 20110630

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20140304

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 679029

Country of ref document: AT

Kind code of ref document: T

Effective date: 20140815

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602008033507

Country of ref document: DE

Effective date: 20140904

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 679029

Country of ref document: AT

Kind code of ref document: T

Effective date: 20140723

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20140723

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141023

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141023

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141024

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141124

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141123

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602008033507

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141118

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141130

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

26N No opposition filed

Effective date: 20150424

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20141118

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141130

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141130

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20150731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141118

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141118

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141201

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20081118

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

REG Reference to a national code

Ref country code: DE

Ref legal event code: R084

Ref document number: 602008033507

Country of ref document: DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20191105

Year of fee payment: 12

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602008033507

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210601