EP1682763A1 - Verfahren zum betreiben einer brennkraftmaschine - Google Patents
Verfahren zum betreiben einer brennkraftmaschineInfo
- Publication number
- EP1682763A1 EP1682763A1 EP04738614A EP04738614A EP1682763A1 EP 1682763 A1 EP1682763 A1 EP 1682763A1 EP 04738614 A EP04738614 A EP 04738614A EP 04738614 A EP04738614 A EP 04738614A EP 1682763 A1 EP1682763 A1 EP 1682763A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- combustion engine
- fuel
- internal combustion
- fuel supply
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000000446 fuel Substances 0.000 claims abstract description 90
- 230000009467 reduction Effects 0.000 claims abstract description 25
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 230000015556 catabolic process Effects 0.000 claims description 3
- 238000006731 degradation reaction Methods 0.000 claims description 3
- 230000004069 differentiation Effects 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 17
- 239000007924 injection Substances 0.000 description 17
- 230000008901 benefit Effects 0.000 description 8
- 239000002828 fuel tank Substances 0.000 description 7
- 239000013641 positive control Substances 0.000 description 6
- 230000003213 activating effect Effects 0.000 description 4
- 230000011664 signaling Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000003502 gasoline Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
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
- F02D41/22—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
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
- F02D2041/223—Diagnosis of fuel pressure sensors
-
- 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
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D2041/227—Limping Home, i.e. taking specific engine control measures at 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
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D2041/228—Warning displays
-
- 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
Definitions
- the invention is based on a method for operating an internal combustion engine according to the preamble of the main claim.
- Fuel under pressure is fed to the internal combustion engine via a fuel supply.
- the pressure in the fuel supply is regulated to a setpoint.
- the method according to the invention with the features of the main claim has the advantage that a pressure reduction rate in the fuel supply is determined and that an error is inferred as a function of a comparison of the pressure reduction rate with a predetermined threshold value. In this way, all leaks in a high-pressure circuit of the fuel supply can be recognized and differentiated from other errors in the fuel supply.
- a further advantage is obtained if a leak in the fuel supply is detected when the predetermined threshold value is exceeded due to the pressure reduction rate. In this way, a leak in the fuel supply can be detected particularly easily and reliably.
- Another advantage is obtained when the internal combustion engine is switched off when a leak in the fuel supply is detected. In this way, safe operation of the internal combustion engine is guaranteed. This is particularly important when the engine is on
- a further advantage is obtained if a restart of the internal combustion engine is locked when a leak in the fuel supply is detected. This prevents the engine from being started up before the fault has been rectified. In this way, the safety when operating the internal combustion engine is also guaranteed.
- a further advantage is obtained if a fault is detected in the fuel supply Limiting the amount of fuel supplied is activated. In this way, emergency operation of the internal combustion engine with reduced power can be implemented.
- the internal combustion engine is switched off when a fault is detected, regardless of the type of the fault, even if the internal combustion engine is operated at idle or with a low load below a predetermined load threshold. In this way, the fact is taken into account that further operation of the internal combustion engine is no longer sensibly possible when the engine is idling or when the load is low, if the actual value for the pressure in the fuel supply no longer reaches the desired value.
- a further advantage is obtained if a high-pressure circuit is separated from a low-pressure circuit of the fuel supply in order to determine the pressure reduction rate and the pressure reduction rate in the high-pressure circuit is determined. In this way, the pressure reduction rate can be determined particularly easily.
- Another advantage is when a warning message is signaled when an error is detected. In this way, the operator of the internal combustion engine, in the case of a vehicle the driver of the vehicle, is informed of the presence of an error.
- FIG. 1 shows a block diagram of an internal combustion engine with a fuel supply to an internal combustion engine
- FIG. 2 shows a flow chart for an exemplary sequence of the method according to the invention.
- 1 denotes an internal combustion engine that drives a vehicle, for example.
- the internal combustion engine 1 comprises a fuel-driven internal combustion engine 5, which can be designed, for example, as a gasoline engine or as a diesel engine.
- the internal combustion engine 1 further comprises a fuel supply 15, which supplies the internal combustion engine 5 with fuel via a fuel supply 10.
- the fuel supply 15 comprises a mechanically or electrically driven feed pump 30, the fuel from a fuel tank 40 pumps into the fuel supply 10 towards the internal combustion engine 5.
- the feed pump 30 can be connected, for example, to a mechanical pressure regulator with a pressure valve connected in parallel.
- a fuel filter can also be arranged at the outlet of the fuel tank 40. This is not shown in Figure 1 for reasons of clarity.
- the fuel is first pumped from the fuel tank 40 into a low-pressure line 65.
- the feed pump 30 generates, for example, a pre-pressure of approximately 3.5 bar.
- the pressure to be set in the low-pressure line 65 can be realized, for example, by the pressure regulator connected in parallel with the pressure valve.
- a high-pressure pump 35 for example driven by the internal combustion engine 5, is thus supplied.
- the high-pressure pump 35 has the task of increasing the fuel pressure from the admission pressure from, for example, approximately 3.5 bar to, for example, approximately 120 bar.
- the high-pressure pump 35 feeds the fuel into a high-pressure line 70 in the direction of the internal combustion engine 5.
- a pressure control valve 45 is arranged, which is controlled by an engine control 80 and is set depending on the setpoint to be set for the pressure in the high-pressure line 70.
- An undesirable excess pressure is reduced via a return line 85 by the corresponding excess
- Fuel is returned to the fuel tank 40 via the return line 85.
- a metering unit or other device for adjusting the delivery rate can also be integrated in the high-pressure pump 35, which can also take over the pressure control.
- the pressure control valve is controlled or, if necessary, additionally regulated.
- a variant without a pressure control valve can also be used. In this example, however, the
- a pressure sensor 50 which detects the pressure of the fuel in the high-pressure line 70 and forwards it to the engine control 80, is arranged downstream of the pressure control valve 45 in the flow direction of the fuel in the high-pressure line 70.
- the direction of flow of the fuel is indicated in FIG. 1 by arrows in the individual lines 65, 70, 85.
- a metering device 55 Arranged downstream of the pressure sensor 50 in the flow direction of the fuel is a metering device 55 which, for example, comprises one or more injection valves with which the amount of fuel to be injected into a combustion chamber of the internal combustion engine 5 can be adjusted in a manner known to those skilled in the art.
- the metering device 55 is also controlled by the engine control 80 in order to achieve a predetermined amount of fuel to be injected.
- the fuel may be injected directly into one or more cylinders of the internal combustion engine 5 or into an intake manifold, via which the fuel is supplied to the internal combustion engine 5 together with the air.
- An injection line 75 is symbolically represented in FIG. 1, via which the fuel is supplied from the metering device 55 to the internal combustion engine 5. leads.
- a signaling device 60 with a warning lamp 90 is shown, which is controlled by the motor controller 80.
- the fuel supply 15 comprises the feed pump 30, the fuel tank 40, the low pressure line 65 and the high pressure pump 35.
- a low pressure circuit 25 comprises the fuel tank 40, the feed pump 30 and the low pressure line 65 as well as the pressure regulator (not shown) connected in parallel.
- a high pressure circuit 20 includes the high pressure pump 35, the high pressure line 70, the pressure control valve 45, the pressure sensor 50 and the metering device 55.
- the pressure of the fuel in the high pressure line 70 is regulated by means of the pressure control valve 45 or the metering unit installed in the high pressure pump 35.
- the fuel supply 10 comprises the low pressure line 65, the high pressure pump 35, the high pressure line 70, the pressure control valve 45 and the pressure sensor 50.
- the engine control 80 uses the pressure sensor 50 to determine the actual value of the pressure of the fuel in the high-pressure line 70 and to compare it with a predetermined target value, for example 120 bar.
- a predetermined target value for example 120 bar.
- the engine control 80 detects an error.
- the predetermined time is selected, for example, in such a way as to tolerate short-term fluctuations in the actual value on the one hand and on the other hand to detect the error early.
- a suitable value for the predetermined time can be, for example, one second.
- the motor controller 80 can indicate the error by activating the signaling device 60, in this example by activating the warning lamp 90.
- the signaling device 60 can additionally or alternatively also comprise an acoustic warning device which is activated by the motor control 80 when a fault is detected.
- the engine controller 80 initiates a shutdown of the injection by appropriately activating the metering device 55 or the injection valve or valves. For this purpose, the injection valves are blocked.
- the motor controller 80 tries to activate the pressure control valve 45 or the metering unit in FIG High pressure pump 35 to regulate a maximum possible setpoint for the pressure of the fuel in the high pressure line 70. This setpoint can be 120 bar, for example. If the maximum possible target value cannot be adjusted, for example also within the predetermined time of, for example, one second, then the motor control 80 initiates the adjustment of the pressure of the pressure control valve 45 by correspondingly controlling the pressure control valve
- the pressure reduction rate is then determined on the basis of the signal from the pressure sensor 50.
- the engine control 80 calculates the pressure change per time from the signal from the pressure sensor 50. The pressure change per time is the rate of pressure decay if it is negative, ie if the pressure change is negative.
- the determined pressure reduction rate is compared by the engine control 80 with a predetermined threshold value. If the pressure reduction rate is above the predetermined threshold value, a leak in the high-pressure circuit 20, especially in the high-pressure line 70, must be assumed.
- the predefined threshold value can be selected such that a natural pressure loss due to tolerable leaks, such as occurs due to the material of the high pressure line 70 and the assembly of the pressure control valve 45 and the pressure sensor 50 and the combination with the high pressure pump 35 and Metering device 55 (e.g. valves with constant leakage in the return) result in a pressure reduction rate that is below the predetermined threshold value and that only in the event of a real leak in the high pressure line 70 does the pressure reduction rate exceed the predetermined threshold value.
- the predefined threshold value can be determined accordingly by test series on a test bench. If a fault in the high-pressure circuit 20 is detected as a type of fault, in particular due to a leak in the high-pressure line 70, the engine control 80 can shut down the internal combustion engine 1 as a fault measure, for example by blocking the air supply and / or the ignition - the latter in the event of a Otto engine. In addition, the engine control 80 can lock a restart of the internal combustion engine 1, and likewise, for example, by blocking the air supply and / or the ignition. If the pressure reduction rate is below the predetermined threshold value, a problem in the fuel supply 15 is recognized as the type of fault, wherein the high pressure circuit 20 is tight and no danger from escaping fuel is to be expected. In this case, the error is based, for example, on the fact that the feed pump 30 or the high-pressure pump 35 cannot be operated at full power. The internal combustion engine 1 can then continue to be operated at least with reduced power.
- the described determination of the type of error can take place within a short time, for example within a few seconds, so that the internal combustion engine 1 or a vehicle driven by it, for example, does not become significantly slower during this determination.
- An application of the method according to the invention is particularly useful when the internal combustion engine 1 is in an operating range with a medium or high load.
- the load can be influenced by the engine control 80 in a manner known to the person skilled in the art and not shown in FIG. 1 as a function of an air mass flow supplied to the internal combustion engine 5, of an accelerator pedal position in the case of a vehicle, of a position of an actuating element, for example a throttle valve the air supply, the amount of fuel injection, or the like.
- a corresponding load signal is then compared to a predefined load threshold value in order to distinguish a small load or the idling from a medium or higher load.
- the predefined load threshold value can be suitably selected on a test bench in such a way that load values below the predefined load threshold value in the event of a positive control deviation no longer lead to sensible operation of the internal combustion engine 1 for at least the predefined time, but the internal combustion engine 1, however, with load values above the predefined load threshold value can also be operated without problems for at least the specified time even in the event of a positive control deviation.
- the motor controller 80 determines the control deviation between the setpoint and the actual value of the at a program point 100
- the engine control 80 checks whether a positive control deviation is present. lies, ie the setpoint is greater than the actual value. If this is the case, the program branches to a program point 110, otherwise the program branches back to program point 100.
- the time variable in motor controller 80 is increased by a predetermined increment value, for example by 10 ms.
- the program then branches to a program point 115.
- the motor controller 80 checks whether the time variable has reached or exceeded the predetermined time. If this is the case, a branch is made to a program point 150, otherwise the program branches back to program point 105.
- motor controller 80 checks whether the determined load is below the predetermined load threshold. If this is the case, the program branches to a program point 140, otherwise the program branches to a program point 120.
- the motor control unit 80 activates the warning lamp 90 of the signaling device 60 and thus indicates a detected error. Furthermore, the engine control 80 causes the metering device 55 to be blocked and thus the injection of fuel. The program then branches to a program point 125.
- the engine control 80 initiates the adjustment of the actual value of the pressure of the fuel in the high-pressure line 70 to the maximum possible or the highest achievable desired value by evaluating the signal supplied by the pressure sensor 50 and activating the pressure control valve 45. The program then branches to a program point 130.
- the engine control 80 causes the pressure control valve 45 to be blocked and thus the high-pressure circuit 20 to be separated from the low-pressure circuit 25.
- the engine control 80 uses the signal from the pressure sensor 50 to determine the pressure reduction rate, i. H. the pressure loss of the fuel per time in the high-pressure line 70.
- the program then branches to a program point 135.
- the program point 135 checks the engine control 80 whether the amount of the pressure reduction speed is above the predetermined threshold value. If this is the case, then point 140 branches, otherwise the program branches to a point 145.
- the engine control 80 has detected a leak in the fuel supply 10 as a type of fault and, in response to this type of fault, causes the internal combustion engine 1 to be switched off, for example by interrupting the air supply and / or the ignition. Additionally or alternatively, the engine control 80 can also lock a restart of the internal combustion engine 1 at program point 140. The program is then exited.
- the engine control unit 80 has detected an error in the fuel supply 15 as an error type and, in response to this type of error, has caused the error to reopen
- the engine control unit 80 can control the metering device 55 in such a way that the injection of the fuel slowly into
- Direction for implementing the driver's request is increased in accordance with the actuation of an accelerator pedal of the vehicle.
- an amount limitation of the injected fuel can be activated by the engine control 80 in order to prevent unnecessary fuel consumption and thus also an unnecessary deterioration of the exhaust gas and to implement emergency operation.
- the program is then exited.
- High-pressure line 70 then leads to a much faster drainage and is therefore easy to identify with the aid of a suitably determined predetermined threshold value for the rate of pressure reduction.
- a different metering device 55 for example solenoid valve injectors in diesel
- the pressure reduction in the high-pressure line 70 with a separate high-pressure circuit 20 and low-pressure circuit 25 is less slow in comparison to the pressure reduction with an additional leak in the High-pressure line 70. Therefore, in systems with solenoid valve injectors, the additional leakage in the high-pressure line 70 can be distinguished less easily from the already existing leakage of the injectors, ie the predefined threshold value for the pressure reduction speed. In this case, speed must be determined more carefully.
- the method according to the invention makes it possible, in particular, to distinguish leaks in the high-pressure circuit 20 from other faults. These leaks can result, for example, from a leak in the high-pressure line 70 or a leak in one or more injection valves of the metering unit 55. Leaks due to a faulty injection valve result, for example, from the fact that the injection valve can no longer close due to the deposition of dirt particles. In particular after the internal combustion engine 1 has been switched off, the pressure in the fuel supply 10 is reduced even by minimal leaks in the high-pressure circuit 20, in particular in the case of one or more correspondingly contaminated injection valves.
- the fuel will flow into the corresponding cylinder of the internal combustion engine 1 due to the pressure present in the fuel supply 10 or due to gravity. This may result in damage the next time the internal combustion engine 1 is started. lead on the internal combustion engine 5. This can be prevented by the described locking of a restart of the internal combustion engine 1.
- the method according to the invention can also be carried out after the internal combustion engine 1 has been switched off with the injection valves closed in order to determine the rate of drainage in the fuel supply 10 according to the exemplary embodiment described above. The supply of the fuel to the internal combustion engine 5 is blocked if the injection valves are completely tight. The one
- the method according to the invention can also be used in the manner described in the context of a so-called shed test. With the help of such a shed test, the emissions of fuel vapors through the fuel tank 40 and its components are measured.
- a hot fuel refueling system makes it possible to test the behavior of the fuel supply 10 during the refueling by different types of fuel and under different simulation conditions.
- the method according to the invention can then be used for leaks in the high pressure circuit 20 when used during the shed test in the manner described or in the fuel supply 10 and errors in the fuel supply 15 can be concluded.
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)
- Valve Device For Special Equipments (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10351893A DE10351893A1 (de) | 2003-11-06 | 2003-11-06 | Verfahren zum Betreiben einer Brennkraftmaschine |
PCT/DE2004/001160 WO2005045221A1 (de) | 2003-11-06 | 2004-06-04 | Verfahren zum betreiben einer brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1682763A1 true EP1682763A1 (de) | 2006-07-26 |
EP1682763B1 EP1682763B1 (de) | 2008-01-23 |
Family
ID=34559412
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04738614A Expired - Lifetime EP1682763B1 (de) | 2003-11-06 | 2004-06-04 | Verfahren zum betreiben einer brennkraftmaschine |
Country Status (6)
Country | Link |
---|---|
US (1) | US7360408B2 (de) |
EP (1) | EP1682763B1 (de) |
CN (1) | CN100430589C (de) |
AT (1) | ATE384866T1 (de) |
DE (2) | DE10351893A1 (de) |
WO (1) | WO2005045221A1 (de) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006046286A1 (de) * | 2005-12-16 | 2007-06-21 | Siemens Ag | Bewegungsüberwachung |
GB0526330D0 (en) * | 2005-12-23 | 2006-02-01 | Rolls Royce Plc | Engine health monitoring |
US7392792B2 (en) * | 2006-08-21 | 2008-07-01 | Caterpillar Inc. | System for dynamically detecting fuel leakage |
DE102006053950B4 (de) * | 2006-11-15 | 2008-11-06 | Continental Automotive Gmbh | Verfahren zur Funktionsüberprüfung einer Druckerfassungseinheit eines Einspritzsystems einer Brennkraftmaschine |
US7650779B2 (en) * | 2007-06-05 | 2010-01-26 | Caterpillar Inc. | Method and apparatus for determining correct installation for gear-driven fuel pump on a fuel injected IC engine |
DE102007057311B3 (de) * | 2007-11-28 | 2009-06-10 | Continental Automotive Gmbh | Verfahren und Vorrichtung zur Fehlererkennung bei emissionsrelevanten Steuereinrichtungen in einem Fahrzeug |
JP4909973B2 (ja) * | 2008-11-14 | 2012-04-04 | 日立オートモティブシステムズ株式会社 | 内燃機関の制御装置 |
US8281768B2 (en) * | 2009-03-04 | 2012-10-09 | GM Global Technology Operations LLC | Method and apparatus for controlling fuel rail pressure using fuel pressure sensor error |
US8464590B2 (en) * | 2010-09-17 | 2013-06-18 | Cameron International Corporation | Pressure sensor configuration for pressurized tank |
IT1402820B1 (it) * | 2010-11-10 | 2013-09-27 | Magneti Marelli Spa | Metodo per determinare la legge di iniezione di un iniettore di carburante |
DE102011082459B4 (de) * | 2011-09-09 | 2013-11-07 | Continental Automotive Gmbh | Verfahren zur Analyse des Wirkungsgrades der Hochdruckpumpe eines Kraftstoffeinspritzsystems |
US9140189B2 (en) * | 2012-04-11 | 2015-09-22 | General Electric Company | Systems and methods for detecting fuel leaks in gas turbine engines |
DE102012021428B4 (de) | 2012-10-30 | 2014-05-22 | Audi Ag | Verfahren zum Überprüfen wenigstens einer Komponente in einer Kraftstoffanlage einer Verbrennungskraftmaschine sowie Kraftwagen mit einer Verbrennungkraftmaschine |
CA2960772C (en) * | 2014-08-14 | 2022-02-22 | Soneter, Inc. | Methods and apparatus for fluid flow monitoring and leak detection |
EP3180593A4 (de) | 2014-08-14 | 2018-05-09 | Reliance Worldwide Corporation | Vorrichtungen und system zur kanalisierung und automatischen überwachung der flüssigkeitsströmung in flüssigkeitsverteilsystemen |
DE102015207961B4 (de) * | 2015-04-29 | 2017-05-11 | Mtu Friedrichshafen Gmbh | Verfahren zum Erkennen einer Dauereinspritzung im Betrieb einer Brennkraftmaschine, Einspritzsystem für eine Brennkraftmaschine und Brennkraftmaschine |
US10041432B2 (en) | 2017-01-09 | 2018-08-07 | Caterpillar Inc. | Fuel system having pump prognostic functionality |
CN110388248B (zh) * | 2018-04-20 | 2022-10-11 | 罗伯特·博世有限公司 | 用于诊断scr系统的方法 |
US11898515B2 (en) * | 2022-03-18 | 2024-02-13 | Ford Global Technologies, Llc | Systems and methods for a vehicle engine fuel system |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3345933B2 (ja) * | 1993-01-19 | 2002-11-18 | 株式会社デンソー | 蓄圧式燃料噴射装置 |
DE19521791A1 (de) | 1995-06-15 | 1996-12-19 | Daimler Benz Ag | Verfahren zum Erkennen von Betriebsstörungen in einer Kraftstoffeinspritzanlage einer Brennkraftmaschine |
DE19622757B4 (de) * | 1995-11-09 | 2007-05-10 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Erkennung einer Leckage in einem Kraftstoffversorgungssystem einer Brennkraftmaschine mit Hochdruckeinspritzung |
JP3339326B2 (ja) * | 1996-09-20 | 2002-10-28 | トヨタ自動車株式会社 | 燃料供給装置 |
DE19727794C1 (de) * | 1997-06-30 | 1999-01-28 | Siemens Ag | Verfahren zum Überprüfen einer Kraftstoffversorgung |
JP3680515B2 (ja) * | 1997-08-28 | 2005-08-10 | 日産自動車株式会社 | 内燃機関の燃料系診断装置 |
US6311548B1 (en) * | 1999-08-25 | 2001-11-06 | Delphi Technologies, Inc. | Method of validating a diagnostic leak detection test for a fuel tank |
US6321593B1 (en) * | 1999-11-18 | 2001-11-27 | Ford Global Technologies, Inc. | Electronic fuel pump, sender and pressure transducer tester |
DE10136706B4 (de) * | 2000-07-28 | 2019-06-13 | Denso Corporation | Diagnosevorrichtung zur Ermittlung eines unnormalen Zustands für ein Hochdruck-Kraftstoffzufuhrsystem einer Brennkraftmaschine |
DE10061855C2 (de) * | 2000-12-12 | 2003-05-22 | Bosch Gmbh Robert | Verfahren, Computerprogramm und Steuer- und/oder Regelgerät zum Betreiben einer Brennkraftmaschine, sowie Brennkraftmaschine |
US6807847B2 (en) * | 2002-02-21 | 2004-10-26 | Delphi Technologies, Inc. | Leak detection method for an evaporative emission system including a flexible fuel tank |
US6907780B1 (en) * | 2003-12-01 | 2005-06-21 | Motorola, Inc. | Fuel level sensor |
-
2003
- 2003-11-06 DE DE10351893A patent/DE10351893A1/de not_active Withdrawn
-
2004
- 2004-06-04 AT AT04738614T patent/ATE384866T1/de not_active IP Right Cessation
- 2004-06-04 DE DE502004006071T patent/DE502004006071D1/de not_active Expired - Lifetime
- 2004-06-04 CN CNB200480015777XA patent/CN100430589C/zh not_active Expired - Fee Related
- 2004-06-04 WO PCT/DE2004/001160 patent/WO2005045221A1/de active IP Right Grant
- 2004-06-04 EP EP04738614A patent/EP1682763B1/de not_active Expired - Lifetime
- 2004-06-04 US US10/577,213 patent/US7360408B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2005045221A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2005045221A1 (de) | 2005-05-19 |
DE502004006071D1 (de) | 2008-03-13 |
US20070079792A1 (en) | 2007-04-12 |
ATE384866T1 (de) | 2008-02-15 |
US7360408B2 (en) | 2008-04-22 |
CN100430589C (zh) | 2008-11-05 |
DE10351893A1 (de) | 2005-06-09 |
EP1682763B1 (de) | 2008-01-23 |
CN1802496A (zh) | 2006-07-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1682763B1 (de) | Verfahren zum betreiben einer brennkraftmaschine | |
DE102006047181B4 (de) | Kraftstoffeinspritzsystem, das zum Gewährleisten einer verbesserten Zuverlässigkeit zum Diagnostizieren eines Ventils ausgelegt ist | |
DE60109966T2 (de) | Methode zum Festsetzen des Betriebs des Einspritzungsystems mit Verteilerleitung für einen Verbrennungsmotor | |
DE102008024955B3 (de) | Verfahren zur Erkennung einer Fehlfunktion eines Raildrucksensors bei einem Common Rail-Einspritzsystem | |
DE102016110660B4 (de) | Steuerungssystem | |
EP0780559A2 (de) | Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine | |
EP1753952A1 (de) | Verfahren und vorrichtung zum überwachen einer kraftstoffzuführeinrichtung einer brennkraftmaschine | |
EP0795077A1 (de) | Verfahren und vorrichtung zur überwachung eines kraftstoffzumesssystems | |
DE10329331B3 (de) | Verfahren zur Diagnose eines Volumenstromregelventils bei einer Brennkraftmaschine mit Hochdruck-Speichereinspritzsystem | |
EP0961957B1 (de) | Verfahren und vorrichtung zur funktionsüberwachung eines druckreglers | |
DE102010013602A1 (de) | Verfahren zur Erkennung eines Fehlverhaltens eines elektronisch geregelten Kraftstoffeinspritzsystems eines Verbrennungsmotors | |
DE19859913B4 (de) | Kraftstoffzufuhrvorrichtung für Brennkraftmaschinen | |
DE102009018654B3 (de) | Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine | |
EP0974826B1 (de) | Verfahren und Vorrichtung zur Erkennung einer Leckage in einem Kraftstoffversorgungssystem einer Brennkraftmaschine | |
DE19620038B4 (de) | Verfahren und Vorrichtung zur Überwachung eines Kraftstoffzumeßsystems | |
EP0764777A2 (de) | Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine | |
EP0886056B1 (de) | Verfahren und Vorrichtung zur überwachung eines Kraftstoffzumesssystems | |
DE10348610B4 (de) | Verfahren und Vorrichtung zum Überwachen eines Kraftstoffdrucksensors | |
EP2795085B1 (de) | Verfahren und vorrichtung zum steuern der kraftstoffzufuhr einer mit flüssiggas betriebenen verbrennungskraftmaschine | |
DE102020214226A1 (de) | Verfahren und Vorrichtung zur Diagnose einer Injektorleckage | |
DE102006029633B4 (de) | Verfahren zum Betreiben eines Kraftstoffsystems einer Brennkraftmaschine | |
DE102004005851A1 (de) | Vorrichtung und Verfahren zum Überwachen einer Kraftstofffördervorrichtung | |
EP1226349B1 (de) | Verfahren zum ablassen des kraftstoffdrucks in einem rücklauffreien kraftstoffversorgungssystem | |
DE112008000659B4 (de) | Verfahren für die Diagnose eines Verbrennungsmotors | |
DE102010004215A1 (de) | Vorrichtung zur Verhinderung des Absterbens des Motors bei einem mit einem Dieseleinspritzsystem ausgestatteten Fahrzeug |
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: 20060606 |
|
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 HU IE IT LI LU MC NL PL PT RO SE SI SK TR |
|
17Q | First examination report despatched |
Effective date: 20061020 |
|
DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
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 HU IE IT LI LU MC NL PL PT RO SE SI SK TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
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 Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REF | Corresponds to: |
Ref document number: 502004006071 Country of ref document: DE Date of ref document: 20080313 Kind code of ref document: P |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 20080123 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: 20080504 |
|
GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 20080423 |
|
ET | Fr: translation filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 20080623 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: 20080123 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: 20080123 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 20080123 Ref country code: IE 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: 20080123 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: 20080423 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: 20080123 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: 20080123 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: 20080123 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 20080123 |
|
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 |
|
26N | No opposition filed |
Effective date: 20081024 |
|
BERE | Be: lapsed |
Owner name: ROBERT BOSCH G.M.B.H. Effective date: 20080630 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB 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: 20080123 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080630 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080630 |
|
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: 20080123 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080630 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080630 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 20080123 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080604 |
|
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 Effective date: 20080724 Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080604 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 20080123 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 20080424 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 13 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 14 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20180625 Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20180622 Year of fee payment: 15 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190604 |
|
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: 20190630 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R084 Ref document number: 502004006071 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: 20220822 Year of fee payment: 19 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502004006071 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: 20240103 |