EP1019625B1 - Verfahren zum überwachen eines einspritzsystems - Google Patents
Verfahren zum überwachen eines einspritzsystems Download PDFInfo
- Publication number
- EP1019625B1 EP1019625B1 EP98958164A EP98958164A EP1019625B1 EP 1019625 B1 EP1019625 B1 EP 1019625B1 EP 98958164 A EP98958164 A EP 98958164A EP 98958164 A EP98958164 A EP 98958164A EP 1019625 B1 EP1019625 B1 EP 1019625B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sound signal
- borne sound
- injection
- injection system
- signal
- 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.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1497—With detection of the mechanical response of 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
- F02D41/30—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
- 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
- F02D2200/025—Engine noise, e.g. determined by using an acoustic sensor
-
- 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
- F02D2250/14—Timing of measurement, e.g. synchronisation of measurements to the engine cycle
-
- 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
- F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
- F02D41/402—Multiple injections
- F02D41/403—Multiple injections with pilot injections
Definitions
- the invention describes a method for monitoring a Injection system according to the preamble of patent claim 1.
- An injection system of an internal combustion engine is in particular at a high injection pressure to a correct one Monitor how it works.
- DE 195 48 279 A1 describes a method and a device for monitoring a fuel metering system in which a defect in the metering system is detected when a Output signal of a structure-borne noise sensor from one specified value deviates.
- the amplitude or the Duration of the output signal from the structure-borne noise sensor compared with a reference signal and in the event of a deviation a defective injector detected. This procedure is however relatively inaccurate.
- EP 0 326 898 A1 describes a method for recognizing a faulty combustion in an internal combustion engine, where a sensor signal, which is a measure of the vibration of a Internal combustion engine represents, filtered and integrated and is compared with reference values, whereby the Internal combustion engine monitored for faulty combustion becomes. (Compare with claim 1 or 2, part 1.)
- the object of the invention is to provide a more precise Method for monitoring an injection system using the To provide evaluation of the structure-borne noise signal.
- a major advantage of The invention is based on the structure-borne sound signal being Measuring window is integrated, and that the integrated Structure-borne noise signal as a measure of the functionality of the Injection system is used.
- the structure-borne noise signal is preferably with a predetermined frequency band filtered, which is between 1 Hz and 10 kHz. Thereby a signal is generated that gives a precise statement about the functionality of the injection system enables.
- FIG. 1 shows schematically an injection system for an internal combustion engine.
- a fuel reservoir 6 has a Pre-feed pump 2, a fuel filter 3 and a high pressure pump 4 fuel supplied from a fuel tank 1 is removed.
- the fuel reservoir 6 is on injectors 7 connected to the fuel in the internal combustion engine Inject 11.
- For setting the fuel pressure im.Fuel reservoir 6 is a pressure control valve 5 after the high pressure pump 4 connected to a high pressure line 16, the high-pressure pump 4 with the fuel reservoir 6 connects.
- a pressure sensor 10 is arranged on the fuel accumulator 6, the one via a third signal line 18 Control unit 12 is connected.
- the internal combustion engine 11 are also assigned a structure-borne noise sensor 14 and a speed sensor 13, via a first and second signal line 8, 9 are connected to the control unit 12.
- the speed sensor 13 is implemented, for example, as an angular velocity sensor, that of a toothed washer and an associated Hall sensor is constructed.
- the control device 12 is also a first control line 15 with the pressure control valve 5 and over further control lines 17 with the injectors 7 in connection. Furthermore, the control unit 12 has a data memory 19 in connection, in the characteristic curves and control method to control the injectors 7 and to control the pressure control valve 5 are filed.
- the control device 12 is also connected to an accelerator pedal sensor 20.
- the control unit 12 controls depending on the accelerator pedal position and the speed of the internal combustion engine 11 according to the programs stored in the data memory 19 the fuel pressure in the fuel reservoir 6 and the injection processes of the injectors 7.
- the control device 12 also uses a method for Detect a defect in the injection system in the form of a Programs is stored in the data memory 19.
- FIG. 2 schematically shows the structure of the control device 12, with which the method for recognizing a defective injection system is carried out.
- the structure-borne noise signal is over the first signal line 8, the speed signal via the second Signal line 9 and the fuel pressure signal via the third Signal line 18 fed to a signal processing unit 101.
- the structure-borne sound signal is in the signal processing unit 101 with a bandpass filter, preferably with a Second order Butterworth filter filtered. Doing so the frequency range from the measured structure-borne noise signal between 1 Hz and 30 kHz, preferably between 10 Hz and 1 kHz filtered out and used for further evaluation.
- the internal combustion engine is 11 for each cylinder a bandpass filter function is stored in the data memory 19, so that the structure-borne sound signal of each cylinder preferably with an adapted filter is filtered.
- the frequency band of the bandpass filter depending on the distance between the structure-borne noise sensor and the cylinder, which Frequency band with increasing distance to lower frequencies is moved.
- the frequency band is also preferably dependent on a map stored by the speed of the internal combustion engine.
- the Map is experimentally determined in such a way that interference signals, filtered out that occur in certain frequency ranges become.
- the map is preferably for everyone Customized cylinder.
- the structure-borne noise signal is preferred for the individual Cylinder is selectively reinforced so that the differences in the damping, which is due to the different location of the individual cylinders with respect to the structure-borne noise sensor 14 result, be balanced.
- the data memory 19 a gain factor is stored for each cylinder with which the structure-borne noise signal of the corresponding cylinder is amplified becomes.
- the greater the amplification the greater the distance between the cylinder and the structure-borne noise sensor is.
- a structure-borne noise signal is generated for all cylinders get that regardless of the location of the cylinders is so that the structure-borne noise signals of the cylinders with each other can be compared or with a single Comparative value can be compared.
- the signal of the Hall sensor determined a speed signal according to known methods.
- the signal processing unit 101 carries the structure-borne noise signal KS, the speed signal N and the fuel pressure signal P to an evaluation unit 102.
- the evaluation unit 102 is integrated the structure-borne noise signal KS via a first crank angle window F1 and a second crank angle window F2 on.
- the first crank angle window corresponds to the crank angle range the pre-injection and the second crank angle window corresponds to the crank angle range of the main injection.
- the first and second crank angle windows F1, F2 are specified by the control unit 12 and by the target time, at which the injection is to start and the setpoint for the end of the combustion, which depends on the Speed and the injection quantity results.
- FIG. 3 shows the structure-borne noise signal KS fed from the signal processing unit 101 to the evaluation unit 102, plotted over the crank angle ⁇ of the crankshaft of the internal combustion engine 11.
- the structure-borne noise signal KS1 integrated by the evaluation unit 102 for the first crank angle window F1 and the integrated structure-borne noise signal KS2 for the second crank angle window F2 are shown.
- the evaluation unit 102 calculates the first integrated structure-borne noise signal KS1 using the following formula:
- the evaluation unit 102 calculates the second integrated structure-borne noise signal KS2 using the following formula:
- crank angle window that the Pre and main injection included.
- the structure-borne noise signal integrated via the pre and main injection.
- crank angle at which the energy conversion for the pre-injection and the energy conversion for the main injection starts as the first start angle SP or as designated second starting angle SM.
- Figure 4 shows a method with which the first starting angle SP and the second starting angle SM can be determined.
- This will the structure-borne noise signal KS after the start of the first cube angle window F1 or after the start of the second crank angle window F2 then checks at which crank angle the structure-borne noise signal KS reaches a predetermined amplitude value A.
- This crank angle corresponds to the first or that second starting angle SV, SM, at which the energy conversion of the Pre-injection or the main injection starts.
- the evaluation unit 102 also determines from the signal of the Pressure sensor the minimum fuel pressure F_MIN, the maximum Fuel pressure F_MAX and the difference ⁇ F between the minimum and maximum fuel pressure F_MIN, F_MAX. The method is explained below with reference to FIG. 5.
- FIG. 5 shows the fuel pressure P, the needle stroke of the injection needle, which releases the injectors and the combustion chamber pressure about the crank angle for a combustion process a cylinder applied.
- the evaluation unit 102 determines the minimum in a predetermined crank angle range KB Fuel pressure F_MIN and the maximum fuel pressure F_MAX.
- the crank angle range KB is controlled by the control unit 12 fixed and corresponds to the crank angle range in which the Fuel supplied to a cylinder for a combustion process becomes.
- the data memory 19 there is a setpoint SP for the fuel pressure stored in fuel storage 6. Starting from the setpoint SP of the fuel pressure is also a permissible maximum range ⁇ FM and a permissible minimum range ⁇ FN for the Fuel pressure P stored in the data memory 19.
- the evaluation unit 102 also evaluates the speed signal N der Internal combustion engine 11. As shown in Figure 6 is the maximum value during an analysis period AZ the speed DX and the minimum value of the speed DN determined. FIG. 6 shows the speed signal over several segments, the crank angle range being determined with a segment is a cylinder for processing a complete Combustion process needed. One segment is one Four-cylinder engine with a crank angle range of 720 ° / 4. The Segment is determined by the control unit.
- the derivation of the speed over time is preferred determined for an analysis period AZ or for each segment.
- the time derivative ⁇ N of the speed within a Subsection of a segment determined and thus the Gradient of the compression speed during the compression process of the cylinder or the gradient of the expansion speed determined during the expansion process of the cylinder.
- the integration constant C MF is determined experimentally.
- the integration constant C MF is preferably stored as a characteristic curve as a function of the engine speed and / or as a function of the fuel pressure.
- the evaluation unit 102 outputs the speed N, the speed gradient ⁇ N for each segment, the speed gradient for the Analysis period, and the speed gradient during the compression process and during the expansion process, the minimum fuel pressure F_MIN, the maximum fuel pressure F_MAX, the difference value ⁇ F between the minimum and the maximum fuel pressure, the first starting angle SV the Pre-injection and the second starting angle SM of the main injection to a state machine 201.
- the energy calculation unit 104 outputs the pilot injection quantity MP, the main injection quantity MM and the total injection quantity MT for the combustion processes of the cylinders on the state machines 201 further.
- the state machine 201 is connected via an input interface 103 the target values for the pilot injection quantity MP, the main injection quantity MM, the total injection quantity MT, the start of injection SV for the pre-injection, the start of injection SM for the Main injection, the setpoint SP for the fuel pressure in the Fuel storage 6 and the speed SN of the internal combustion engine 11 fed.
- the state machine 201 with the data memory 19 is also located in connection, in the permissible value ranges for the pre-injection quantity ⁇ MP, the main injection quantity ⁇ MM, the total injection quantity ⁇ MT are stored.
- the data store 19 permissible value ranges ⁇ SV for the first starting angle SV and permissible value ranges ⁇ SM for the second starting angle SM on.
- FIG. 7 shows a schematic program sequence, after which the state machine 201 performs the function of the injection system checked.
- the state machine 201 compares after the start of the internal combustion engine at program point 100 that from the energy calculation unit 104 calculated total injection quantity MT with the permissible value range ⁇ MT for the total injection quantity. If the comparison shows that the difference is greater than the specified one permissible value range is ⁇ MT, then according to the program item 101 branches. The state machine saves at program point 101 a malfunction for the total injection in the State memory 202.
- the state machine 201 preferably compares at the program point 100 instead of the total injection quantity, the pre-injection quantity and / or the main injection quantity with corresponding permissible Value ranges. The comparison shows that the determined Pre-injection quantity of the corresponding permissible If the value range deviates, there will be a malfunction in the injection system recognized during pre-injection and according to program point 101 branches.
- the determined main injection quantity deviates from the corresponding one permissible range of values, then a malfunction detected in the injection system during the main injection.
- the program then branches to program item 102.
- Integrated structure-borne noise signal KS1, KS2 with a corresponding Value range compared. Lie the first and / or the second integrated structure-borne noise signal KS1, KS2 outside the permissible value ranges, then at program point 101 a corresponding error entry in the status memory performed.
- the permissible value ranges are e.g. b. in the Data memory 19 depending on the speed and the Target fuel quantity stored.
- state machine 201 compares the first starting angle calculated by the evaluation unit 102 SV of the pre-injection with a predetermined permissible value range. If the comparison shows that the first starting angle, i.e. the calculated start of injection of the pre-injection, outside of the permissible value range, then according to the program item 103 branches. The state machine sets at program point 103 201 an error entry about a malfunction the pre-injection in the state memory 202. Subsequently the program branches to program item 104.
- the state machine 201 compares the second starting angle calculated by the evaluation unit 102, i.e. the start of injection of the main injection SM, with a specified permissible value range. If the comparison shows that the calculated start of injection of the main injection SM outside of the permissible value range, then the State machine 201 malfunctioned in the main injection and puts a hint for a at program point 105 Malfunction for the start of main injection in the State memory 202. Then after the program point 106 branches.
- the state machine 201 checks the Fuel pressure required for the checked injection process in the Fuel storage 6 is present. To do this, the state machine compares 201 the minimum measured by the evaluation unit 102 Fuel pressure F_MIN with an allowable minimum Fuel pressure. State machine 201 also compares the maximum fuel pressure measured by the evaluation unit 102 F_MAX with a predetermined maximum fuel pressure.
- the comparison shows that the measured minimum fuel pressure F_MIN or the measured maximum fuel pressure more than a predetermined range of values from the setpoint of the If the fuel pressure deviates, a malfunction in the Pressure system of the injection system recognized and after program point 107 branches. At program point 107 there is an error entry stored in the state memory 202 for the printing system. The program then branches to program item 108.
- the state machine evaluates the speed the internal combustion engine 11 to make a statement about a Malfunction. To do this, the state machine compares 201 the speed measured by the evaluation unit 102 averaged over an analysis period with a given Range of values. The comparison shows that the measured Speed is outside the permissible value range, see above a malfunction in the injection system is detected and after Program item 109 branches. At program point 109 a Error entry made in the state memory 202 for the speed.
- the time derivative of the speed is preferably used for an analysis period with a corresponding permissible Value range compared and in the event of a deviation from the permissible Malfunction detected.
- Time derivative of the speed for an analysis period can also derive the speed of rotation for a segment compared with a corresponding permissible value range become. The comparison shows that the time derivative the speed for a segment outside the permissible Value range, there will be a malfunction for the segment recognized and a corresponding one in the state memory 202 Error entry filed.
- a particularly accurate assessment of the injection system will thereby achieved that the gradient in individual segment areas the speed with a corresponding permissible value range is compared. This is done for example for one Compression process or for an expansion process Cylinders. If the measured speed gradient is outside of the permissible value range, a malfunction for recognized the compression process or for the expansion process.
- the state machine 201 then checks at the program point 110 whether an error entry is stored in the state memory 202 is. If this is the case, the Injection system detected.
- the state machine 201 preferably detects at the program point 110 only then a malfunction in the injection system, if at least one malfunction due to the evaluation of the Structure-borne noise signal and at least one other malfunction when evaluating the fuel pressure signal or when Evaluation of the speed was determined. That way Wrong decisions about fault detection in the injection system avoided.
- the program then branches back to program point 100 and the program is restarted after a specified period of time.
- An error will preferably only be recognized when an error was detected in several runs of the program has been.
- an error debouncing can be provided in which only the error entries of four program runs be saved and only then an error in the injection system is recognized if at least two program runs an error was detected.
- An improvement of the method is achieved in that the basic noise of the internal combustion engine in a time range is detected by the structure-borne noise sensor in which no combustion takes place.
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- 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)
Description
- Figur 1
- ein Common-Rail-Einspritzsystem,
- Figur 2
- ein Blockdiagramm für die Signalauswertung,
- Figur 3
- ein Körperschallsignal in Abhängigkeit vom Kurbelwinkel,
- Figur 4
- ein Körperschallsignal zur Erkennung des Einspritzbeginns,
- Figur 5
- den Kraftstoffdruck im Kraftstoffspeicher in Abhängigkeit vom Kurbelwinkel,
- Figur 6
- ein Drehzahlsignal, und
- Figur 7
- einen Programmablauf.
- wobei mit
- σ = iΩg
- und mit
- Ωg = w/wg bezeichnet ist,
- wobei
- wg eine Grenzwinkelgeschwindigkeit,
w die Winkelgeschwindigkeit
a1 einen ersten Faktor und
a2 einen zweiten Faktor bezeichnet
Claims (11)
- Verfahren zum Überwachen eines Einspritzsystems einer Brennkraftmaschine, bei dem ein Körperschallsignal erfaßt wird, bei dem das Körperschallsignal zur Bewertung des Einspritzsystems verwendet wird, wobeidas Körperschallsignal über ein vorgegebenes Meßfenster integriert wird,das integrierte Körperschallsignal als Maß für die Funktionsfähigkeit des Einspritzsystems verwendet wird, und dadurch gekennzeichnet,daß das gemessene Körperschallsignal mit dem Grundgeräusch bewertet wird, das die Brennkraftmaschine ohne Verbrennung erzeugt.
- Verfahren zum Überwachen eines Einspritzsystems einer Brennkraftmaschine, bei dem ein Körperschallsignal erfaßt wird, bei dem das Körperschallsignal zur Bewertung des Einspritzsystems verwendet wird, wobeidaß das Körperschallsignal über ein vorgegebenes Meßfenster integriert wird,daß das integrierte Körperschallsignal als Maß für die Funktionsfähigkeit des Einspritzsystems verwendet wird, und dadurch gekennzeichnet,daß das integrierte Körperschallsignal zur Berechnung der eingespritzten Kraftstoffmenge mit einem Bewertungsfaktor bewertet wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Körperschallsignal mit einem Frequenzband von 1 Hz bis 10 kHz gefiltert wird, insbesondere mit einem Frequenzband von 10 Hz bis 1 kHz gefiltert wird, und daß das im Frequenzband liegende Körperschallsignal weiter bearbeitet wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Körperschallsignal mit einem Butterworth-Filter zweiter Ordnung gefiltert wird.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß der Bewertungsfaktor vom Kraftstoffdruck abhängt, der während des betrachteten Einspritzvorganges im Kraftstoffspeicher herrscht, oder daß der Bewertungsfaktor von der Drehzahl der Brennkraftmaschine abhängt, die während des betrachteten Einspritzvorganges vorliegt.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Körperschallsignal für eine Voreinspritzung oder für ein Haupteinspritzung integriert wird, daß das integrierte Körperschallsignal der Vor- oder der Haupteinspritzung mit Vergleichswerten verglichen wird, und daß der Vergleich zur Bewertung des Einspritzsystems verwendet wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Körperschallsignal für eine Voreinspritzung oder für eine Haupteinspritzung erfaßt wird, daß der Einspritzbeginn der Vor- oder der Haupteinspritzung aus dem Körperschallsignal ermittelt wird, daß der Einspritzbeginn der Vor- oder der Haupteinspritzung mit einem zulässigen Wertebereich Sollwertbereichen verglichen wird, und daß der Vergleich zur Beurteilung des Einspritzsystems verwendet wird.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet,daß aus dem integrierten Körperschallsignal die in die Brennkraftmaschine eingespritzte Kraftstoffmenge berechnet wird, unddaß die berechnete Kraftstoffmenge mit einer für den betrachteten Einspritzvorgang vorgegebenen Kraftstoffmenge verglichen wird, und daß aufgrund des Vergleichs die Funktionsfähigkeit des Einspritzsystems bewertet wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß zusätzlich zum Körperschallsignal der Kraftstoffdruck für den betrachteten Verbrennungsvorgang gemessen wird, daß der gemessene Kraftstoffdruck mit einem zulässigen Wertebereich verglichen wird, und daß der Vergleich zur Beurteilung der Funktionsfähigkeit des Einspritzsytems verwendet wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß zusätzlich zum Körperschallsignal das Drehzahlsignal für den betrachteten Einspritzvorgang gemessen wird, daß das gemessene Drehzahlsignal mit einem zulässigen Wertebereich verglichen wird, und daß der Vergleich zur Beurteilung der Funktionsfähigkeit des Einspritzsystems verwendet wird.
- Verfahren nach Anspruch 9 oder 10, dadurch gekennzeichnet, daß eine Fehlfunktion des Einspritzsystems erst erkannt wird, wenn die Auswertung des Körperschallsignals und die Auswertung des Kraftstoffdrucksignals oder die Auswertung des Körperschallsignals und die Auswertung des Drehzahlsignals eine Fehlfunktion anzeigen.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742991 | 1997-09-29 | ||
DE19742991 | 1997-09-29 | ||
PCT/DE1998/002841 WO1999017010A1 (de) | 1997-09-29 | 1998-09-23 | Verfahren zum überwachen eines einspritzsystems |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1019625A1 EP1019625A1 (de) | 2000-07-19 |
EP1019625B1 true EP1019625B1 (de) | 2001-07-18 |
Family
ID=7844008
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98958164A Expired - Lifetime EP1019625B1 (de) | 1997-09-29 | 1998-09-23 | Verfahren zum überwachen eines einspritzsystems |
Country Status (4)
Country | Link |
---|---|
US (1) | US6390068B1 (de) |
EP (1) | EP1019625B1 (de) |
DE (1) | DE59801054D1 (de) |
WO (1) | WO1999017010A1 (de) |
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DE19844746C1 (de) * | 1998-09-29 | 2000-04-20 | Siemens Ag | Verfahren und Vorrichtung zum Detektieren einer Voreinspritzung bei einer Brennkraftmaschine |
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DE10343069B4 (de) * | 2003-09-17 | 2005-09-29 | Siemens Ag | Verfahren zur Quantifizierung einer Voreinspritzung bei einem Kraftstoffeinspritzsystem einer Brennkraftmaschine |
DE10350180B4 (de) | 2003-10-28 | 2008-03-27 | Siemens Ag | Verfahren und Vorrichtung zur Analyse des Verbrennungsgeräusches bei der Kraftstoffeinspritzung in einen Zylinder einer Brennkraftmaschine |
DE102004031239A1 (de) * | 2004-06-29 | 2006-01-19 | Daimlerchrysler Ag | Sensorsystem für ein Fahrzeug |
AU2005306541B2 (en) * | 2004-11-18 | 2009-01-15 | Westport Fuel Systems Canada Inc. | System and method for processing an accelerometer signal to assist in combustion quality control in an internal combustion engine |
DE102004058682A1 (de) * | 2004-12-06 | 2006-06-08 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Überwachung und Steuerung einer Brennkraftmaschine |
DE102005005351A1 (de) * | 2005-02-05 | 2006-08-17 | L'orange Gmbh | Verfahren und Einrichtung zur Erfassung des Einspritzvorgangs eines Kraftstoffinjektors einer Brennkraftmaschine mittels eines Schallsensors |
DE102006015967A1 (de) * | 2006-04-05 | 2007-10-18 | Siemens Ag | Adaptionsverfahren einer Einspritzanlage einer Brennkraftmaschine |
JP2008175107A (ja) * | 2007-01-17 | 2008-07-31 | Yamaha Marine Co Ltd | エンジンの故障診断装置、船舶 |
GB0705026D0 (en) * | 2007-03-15 | 2007-04-25 | Delphi Tech Inc | Vehicle diagnosis system and method |
DE102007012769A1 (de) * | 2007-03-16 | 2008-09-18 | Audi Ag | Verfahren zum Erkennen eines Betriebszustandes einer Brennkraftmaschinen-Einrichtung mit Hilfe eines Körperschallsensors |
US7533563B2 (en) * | 2007-07-16 | 2009-05-19 | Horak Michael N | System and method for testing fuel injectors |
US8099231B1 (en) | 2010-08-18 | 2012-01-17 | GM Global Technology Operations LLC | System and method for detecting fuel injector malfunction based on engine vibration |
US8857412B2 (en) * | 2011-07-06 | 2014-10-14 | General Electric Company | Methods and systems for common rail fuel system dynamic health assessment |
DE102017115757A1 (de) * | 2017-07-13 | 2019-01-17 | Man Diesel & Turbo Se | Verfahren und Steuerungseinrichtung zum Betreiben einer Brennkraftmaschine |
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EP0326898B1 (de) * | 1988-02-04 | 1991-03-20 | Siemens Aktiengesellschaft | Verfahren mit Einrichtung zur Erkennung einer fehlerhaften Verbrennung in einem Verbrennungsmotor |
ES2068283T3 (es) * | 1990-05-28 | 1995-04-16 | Siemens Ag | Procedimiento para la regulacion selectiva de cilindro del picado de motores de combustion interna. |
JPH08210168A (ja) * | 1995-02-02 | 1996-08-20 | Sanshin Ind Co Ltd | エンジンの運転制御装置 |
DE19548279B4 (de) | 1995-09-28 | 2006-12-14 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Überwachung eines Kraftstoffzumeßsystems |
IT1284328B1 (it) * | 1996-01-19 | 1998-05-18 | Fiat Ricerche | Metodo e unita' di diagnosi di guasti di iniettori di impianti di iniezione ad alta pressione per motori a combustione interna |
US5934256A (en) * | 1997-03-04 | 1999-08-10 | Siemens Aktiengesellschaft | Method for detecting irregular combustion processes in a multicylinder diesel internal combustion engine |
EP1021649B1 (de) * | 1997-10-07 | 2002-05-15 | Siemens Aktiengesellschaft | Verfahren und einrichtung zum überwachen einer brennkraftmaschine |
DE19844746C1 (de) * | 1998-09-29 | 2000-04-20 | Siemens Ag | Verfahren und Vorrichtung zum Detektieren einer Voreinspritzung bei einer Brennkraftmaschine |
-
1998
- 1998-09-23 DE DE59801054T patent/DE59801054D1/de not_active Expired - Lifetime
- 1998-09-23 WO PCT/DE1998/002841 patent/WO1999017010A1/de active IP Right Grant
- 1998-09-23 EP EP98958164A patent/EP1019625B1/de not_active Expired - Lifetime
- 1998-09-23 US US09/509,457 patent/US6390068B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE59801054D1 (de) | 2001-08-23 |
EP1019625A1 (de) | 2000-07-19 |
US6390068B1 (en) | 2002-05-21 |
WO1999017010A1 (de) | 1999-04-08 |
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