EP1926900A1 - Procede et dispositif de surveillance d'un systeme de dosage de carburant - Google Patents
Procede et dispositif de surveillance d'un systeme de dosage de carburantInfo
- Publication number
- EP1926900A1 EP1926900A1 EP06793414A EP06793414A EP1926900A1 EP 1926900 A1 EP1926900 A1 EP 1926900A1 EP 06793414 A EP06793414 A EP 06793414A EP 06793414 A EP06793414 A EP 06793414A EP 1926900 A1 EP1926900 A1 EP 1926900A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- detected
- error
- fuel
- function
- 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
Links
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
- F02D41/3845—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
- F02D41/22—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
-
- 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
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
- F02M65/003—Measuring variation of fuel pressure in high pressure line
-
- 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
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/1413—Controller structures or design
- F02D2041/1423—Identification of model or controller parameters
-
- 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
Definitions
- the invention is based on a method and a device for monitoring a Kraftstoffzumesssystems according to the preamble of the main claims.
- the pressure in the high pressure region is detected by means of a pressure sensor.
- This pressure sensor is usually used to adjust or regulate the pressure in the high pressure range.
- the pressure is evaluated so that the pressure curve is detected and compared with an expected pressure curve. In the event of a deviation between an expected pressure curve and the actual pressure curve, the device detects a leak.
- FIG. 1 shows the essential elements of a fuel metering system
- FIG. 2 shows the procedure according to the invention
- FIG. 1 shows, by way of example, essential elements of a fuel metering system, in particular a diesel internal combustion engine.
- the internal combustion engine is designated.
- This fuel is supplied via a first injector 110 and a second injector 120.
- the injectors 110 and 120 are connected via fuel lines with a rail 130 in connection.
- At least one sensor 140 which emits a pressure variable p which characterizes the pressure in the high-pressure region, is arranged on the rail.
- This print size is also referred to as rail pressure in the following.
- other variables characterizing the rail pressure can be evaluated accordingly.
- the rail 130 is acted upon by a high-pressure pump 150 with fuel. This
- High-pressure pump is associated with an actuating element 160, with which the amount of fuel delivered by the high pressure pump 150 and thus the rail pressure can be controlled.
- This control element 160 and the injectors 110 and 120 are acted upon by a control unit 170 with drive signals.
- the control unit also processes the output signal p of the sensor 140.
- the rail and the line between the high-pressure pump 150 and the injectors as high-pressure region and the area before the high-pressure pump is referred to as low-pressure region.
- the procedure is applicable to any number of injectors. For clarity, only two injectors are shown. It can also be provided more adjusting elements.
- a further adjusting element can be provided by means of which the rail pressure can be controlled.
- Such an actuating element is designed, for example, as a solenoid valve which connects the high-pressure region to the low-pressure region.
- the control unit evaluates the signals of further sensors or controls further control elements for controlling the internal combustion engine 100.
- the approach is not limited to systems with a rail. It can also be used on systems with multiple rails or even on systems without a rail. Instead of the rail pressure then a size corresponding to the rail pressure is evaluated.
- the high-pressure pump 150 conveys the fuel from the low-pressure region, which in particular comprises the tank, into a high-pressure region, which in particular includes the rail 130.
- the amount of fuel delivered and thus the rail pressure can be adjusted by means of the first control element 160.
- This is preferably done by a control, which is part of the control unit 170.
- the control unit 170 detects the rail pressure p via the sensor 140 and compares it with a desired value and controls the actuating element 160 as a function of the deviation between the setpoint and the actual value. From the high pressure region of the fuel passes through the injectors 110 and 120 in the internal combustion engine.
- the injectors essentially contain an actuator, which can be designed as a solenoid valve or as a piezoelectric actuator.
- the control unit 170 acts on the - A -
- Injectors 110 and 120 with such signals that the fuel is supplied at a predetermined time or to the predetermined angular position of the crankshaft of the internal combustion engine in a predetermined amount.
- the pressure profile is evaluated and compared with different, in particular stored, pressure profiles. On the basis of this comparison, on the one hand the leakage is reliably detected and, on the other hand, the leakage of a specific component is assigned.
- a first step 200 it is checked whether an operating state exists in which a check is possible. If this is not the case, the query 200 takes place after a waiting time has elapsed. If the query 200 recognizes that a check is possible, then
- Step 210 deliberately causes conditions that are necessary for testing.
- the high-pressure region is subjected to a test pressure.
- step 220 the pressure curve over time or over the rotation of the crankshaft is then recorded. Subsequently, in step 230, the exponent of the pressure drop curve is determined.
- Table can then be read based on the stored exponent of the corresponding error. In this case, usually a certain range of values of the exponent will be assigned to a type of error.
- hyperbolic function other functions that describe the pressure drop over time or the angular position can also be used.
- the course can be approximated with a straight line.
- a size that characterizes the steepness of the pressure drop may be used.
- arbitrary functions for describing the pressure profile and any variables characterizing this function can be used to identify the type of fault or the defective component.
- exponential functions are also suitable.
- FIG. 3 shows by way of example two curves of the rail pressure with and without pressure-dependent leakage gap widening over time. It can be seen from this figure that, when the pressure value is monitored at a specific point in time t 1, the pressure at different pressure curves has fallen to the same value. By means of an evaluation of the pressure at one or a few points in time is a
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)
- Fuel-Injection Apparatus (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005043971A DE102005043971A1 (de) | 2005-09-15 | 2005-09-15 | Verfahren und Vorrichtung zur Überwachung eines Kraftstoffzumesssystems |
PCT/EP2006/066234 WO2007031492A1 (fr) | 2005-09-15 | 2006-09-11 | Procede et dispositif de surveillance d'un systeme de dosage de carburant |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1926900A1 true EP1926900A1 (fr) | 2008-06-04 |
EP1926900B1 EP1926900B1 (fr) | 2016-06-29 |
Family
ID=37487575
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06793414.1A Expired - Fee Related EP1926900B1 (fr) | 2005-09-15 | 2006-09-11 | Procede et dispositif de surveillance d'un systeme de dosage de carburant |
Country Status (7)
Country | Link |
---|---|
US (1) | US8191411B2 (fr) |
EP (1) | EP1926900B1 (fr) |
JP (1) | JP4646261B2 (fr) |
KR (1) | KR101046825B1 (fr) |
CN (1) | CN101263291B (fr) |
DE (1) | DE102005043971A1 (fr) |
WO (1) | WO2007031492A1 (fr) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITTO20070128A1 (it) * | 2007-02-23 | 2008-08-24 | Derossi Massimo S R L | Apparato di diagnosi multiuso per un motore a iniezione diretta benzina o diesel, preferibilmente con tecnologia a collettore comune (common rail). |
DE102009002619A1 (de) | 2009-04-24 | 2010-10-28 | Robert Bosch Gmbh | Verfahren zur Überwachung eines Druckspeichers |
CN101598073A (zh) * | 2009-07-10 | 2009-12-09 | 奇瑞汽车股份有限公司 | 一种油轨压力信号的采集及监测方法 |
EP2333290B1 (fr) * | 2009-12-14 | 2013-05-15 | Volvo Car Corporation | Procédé et système pour détecter une fuite dans un réservoir de carburant de véhicule |
DE102010013602B4 (de) | 2010-03-31 | 2015-09-17 | Continental Automotive Gmbh | Verfahren zur Erkennung eines Fehlverhaltens eines elektronisch geregelten Kraftstoffeinspritzsystems eines Verbrennungsmotors |
DE102012208465A1 (de) | 2012-05-21 | 2013-11-21 | Robert Bosch Gmbh | Kraftstoffeinspritzsystem mit einer hochdruckfesten Drosselvorrichtung zur Einstellung der Durchflussmenge und der Strömungsform |
US20140238352A1 (en) * | 2013-02-22 | 2014-08-28 | Caterpillar, Inc. | Fault Diagnostic Strategy For Common Rail Fuel System |
US9657653B2 (en) | 2014-06-09 | 2017-05-23 | Caterpillar Inc. | Gas pressure high and low detection |
DE102017200482B4 (de) * | 2017-01-13 | 2022-08-18 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren und vorrichtung zur detektion und charakterisierung von kraftstoffleckage sowie fahrzeug |
DE102021201907A1 (de) | 2021-03-01 | 2022-09-01 | Robert Bosch Gesellschaft mit beschränkter Haftung | Verfahren zum Erkennen einer Leckage in einem Hochdruckbereich eines Kraftstoffversorgungssystems |
GB2624886A (en) * | 2022-11-29 | 2024-06-05 | Delphi Tech Ip Ltd | Test platform leakage monitoring in bleed down measurement |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5765822A (en) | 1980-10-09 | 1982-04-21 | Hitachi Constr Mach Co Ltd | Control of driving system containing internal combustion engine and hydraulic pump |
DE4141588A1 (de) * | 1991-12-17 | 1993-06-24 | Bosch Gmbh Robert | Fahrgeschwindigkeitsregler fuer ein fahrzeug |
DE4443652B4 (de) * | 1994-12-08 | 2012-01-19 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine |
DE19520300A1 (de) * | 1995-06-02 | 1996-12-05 | Bosch Gmbh Robert | Einrichtung zur Erkennung eines Lecks in einem Kraftstoffversorgungssystem |
JP3339326B2 (ja) * | 1996-09-20 | 2002-10-28 | トヨタ自動車株式会社 | 燃料供給装置 |
JP3796912B2 (ja) * | 1997-02-21 | 2006-07-12 | トヨタ自動車株式会社 | 内燃機関の燃料噴射装置 |
JP3704887B2 (ja) * | 1997-05-21 | 2005-10-12 | トヨタ自動車株式会社 | 内燃機関の故障診断装置 |
DE19727794C1 (de) | 1997-06-30 | 1999-01-28 | Siemens Ag | Verfahren zum Überprüfen einer Kraftstoffversorgung |
JP3435627B2 (ja) | 1997-12-19 | 2003-08-11 | 日産自動車株式会社 | 内燃機関の高圧燃料回路検査方法 |
DE19833086B4 (de) * | 1998-07-23 | 2013-08-01 | Robert Bosch Gmbh | MaximalwertVerfahren und Vorrichtung zur Erkennung einer Leckage in einem Kraftstoffversorgungssystem einer Brennkraftmaschine |
DE19838222A1 (de) * | 1998-08-22 | 2000-02-24 | Daimler Chrysler Ag | Verfahren zur Auswertung eines Ionenstromsignales einer selbstzündenden Brennkraftmaschine |
JP2000303886A (ja) * | 1999-04-20 | 2000-10-31 | Denso Corp | 高圧燃料系異常検出装置 |
IT1319633B1 (it) * | 2000-01-18 | 2003-10-20 | Fiat Ricerche | Metodo di valutazione della funzionalita' di un impianto di iniezionea collettore comune di un motore a combustione interna. |
IT1321068B1 (it) * | 2000-11-14 | 2003-12-30 | Fiat Ricerche | Metodo di diagnosi di perdite in un impianto di iniezione a collettore comune di un motore a combustione interna. |
JP2002221069A (ja) * | 2001-01-26 | 2002-08-09 | Hitachi Ltd | 燃料供給装置を備えた内燃機関の制御装置 |
DE10212508A1 (de) * | 2002-03-21 | 2003-10-02 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Steuerung der Kraftstoffzumessung in eine Brennkraftmaschine |
JP3994790B2 (ja) * | 2002-05-13 | 2007-10-24 | トヨタ自動車株式会社 | 内燃機関の異常箇所検出装置 |
US6712045B1 (en) * | 2002-08-08 | 2004-03-30 | Detroit Diesel Corporation | Engine control for a common rail fuel system using fuel spill determination |
JP4361889B2 (ja) * | 2005-04-11 | 2009-11-11 | 株式会社デンソー | リーク検査装置及び燃料蒸気処理装置 |
US8074627B2 (en) * | 2010-07-14 | 2011-12-13 | Ford Global Technologies, Llc | Automotive fuel system leak testing |
-
2005
- 2005-09-15 DE DE102005043971A patent/DE102005043971A1/de not_active Withdrawn
-
2006
- 2006-09-11 JP JP2008530499A patent/JP4646261B2/ja not_active Expired - Fee Related
- 2006-09-11 US US11/992,106 patent/US8191411B2/en not_active Expired - Fee Related
- 2006-09-11 WO PCT/EP2006/066234 patent/WO2007031492A1/fr active Application Filing
- 2006-09-11 EP EP06793414.1A patent/EP1926900B1/fr not_active Expired - Fee Related
- 2006-09-11 KR KR1020087006220A patent/KR101046825B1/ko not_active IP Right Cessation
- 2006-09-11 CN CN2006800338223A patent/CN101263291B/zh not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2007031492A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2007031492A1 (fr) | 2007-03-22 |
CN101263291B (zh) | 2012-04-25 |
CN101263291A (zh) | 2008-09-10 |
EP1926900B1 (fr) | 2016-06-29 |
DE102005043971A1 (de) | 2007-03-22 |
JP4646261B2 (ja) | 2011-03-09 |
KR20080055832A (ko) | 2008-06-19 |
JP2009508054A (ja) | 2009-02-26 |
US20090199627A1 (en) | 2009-08-13 |
US8191411B2 (en) | 2012-06-05 |
KR101046825B1 (ko) | 2011-07-06 |
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