DE102004036502A1 - Device for recognizing knocking noise comprises a first sensor for receiving a first signal and transferring to an evaluation unit and a second sensor arranged spatially displaced to the first sensor for receiving a second signal - Google Patents
Device for recognizing knocking noise comprises a first sensor for receiving a first signal and transferring to an evaluation unit and a second sensor arranged spatially displaced to the first sensor for receiving a second signal Download PDFInfo
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- DE102004036502A1 DE102004036502A1 DE200410036502 DE102004036502A DE102004036502A1 DE 102004036502 A1 DE102004036502 A1 DE 102004036502A1 DE 200410036502 DE200410036502 DE 200410036502 DE 102004036502 A DE102004036502 A DE 102004036502A DE 102004036502 A1 DE102004036502 A1 DE 102004036502A1
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- 238000011156 evaluation Methods 0.000 title claims abstract description 40
- 238000002485 combustion reaction Methods 0.000 claims description 38
- 238000001514 detection method Methods 0.000 claims description 34
- 230000010354 integration Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000005284 excitation Effects 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 235000010730 Ulex europaeus Nutrition 0.000 description 1
- 240000003864 Ulex europaeus Species 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/22—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
- G01L23/221—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines
- G01L23/225—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines circuit arrangements therefor
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- 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
- F02D2041/1432—Controller structures or design the system including a filter, e.g. a low pass or high pass filter
-
- 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/28—Interface circuits
- F02D2041/281—Interface circuits between sensors and control unit
-
- 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/28—Interface circuits
- F02D2041/286—Interface circuits comprising means for signal processing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
- F02D35/027—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions using knock sensors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P5/00—Advancing or retarding ignition; Control therefor
- F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
- F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
- F02P5/15—Digital data processing
- F02P5/152—Digital data processing dependent on pinking
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zur Klopfgeräuscherkennung für einen Verbrennungsmotor nach dem Oberbegriff des Patentanspruchs 1 oder 4.The The invention relates to a device for knocking noise detection for a Internal combustion engine according to the preamble of patent claim 1 or 4th
Klopfen stellt eine Detonation von so genanntem Endgas in der Zylinderfüllung eines Verbrennungsmotors dar, welche gegen Ende eines normalen Verbrennungsvorganges stattfindet. Die dabei auftretenden Schockwellen breiten sich mit bis zu zweifacher Schallgeschwindigkeit im Brennraum aus und bewirken bei wiederholtem auftreten erosionsartige Schäden an Kolben und Brennraumdach. Die Schockwellen können als eine impulsförmige Anregung der Zylinderkopfstruktur aufgefasst werden, welche sich als Körperschall im Motor ausbreitet. Die Körperschall übertragende Struktur reagiert auf diese Anregung mit Schwingungen, die sich aus ihren Eigenformen zusammensetzen und so zu Resonanzüberhöhungen bei bestimmten Frequenzbereichen führt. In herkömmlichen Klopferkennungssystemen werden diese Schwingungen mit einem Sensor aufgenommen und bis zu drei dieser Frequenzbereiche ausgewertet. Hierbei wird die Amplitude des beobachteten Frequenzbandes in einem bestimmten Zeitintervall als Kriterium für Klopfen herangezogen. Das Sensorsignal wird hierzu mit einem Bandpass in einem vorgegebenen Frequenzband gefiltert, quadriert und anschließend über das zu beobachtende Zeitintervall integriert, insbesondere im Bereich 0°–40° Kurbelwinkel nach ZOT. Überschreitet das resultierende berechnete Integral eine vorgebbare Schwelle, wird dies als Indiz für Klopfen gewertet. Es kann durch dieses Verfahren weder der Ort der Körperschallanregung, noch die Art der Anregung (Rauschen, Impuls) festgestellt werden.Beat represents a detonation of so-called tail gas in the cylinder charge of a Internal combustion engine, which towards the end of a normal combustion process takes place. The occurring shock waves spread with up to twice the speed of sound in the combustion chamber and cause Repeated erosion-like damage to the piston and the combustion chamber roof occur. The shock waves can as a pulse-shaped Suggestion of the cylinder head structure to be construed, which itself as a structure-borne noise spread in the engine. The structure-borne sound transmission Structure reacts to this excitation with vibrations that are arising their own forms together and thus to resonance peaks certain frequency ranges. In conventional Knock detection systems will detect these vibrations with a sensor recorded and evaluated up to three of these frequency ranges. Here, the amplitude of the observed frequency band in a determined time interval as a criterion for knocking. The Sensor signal is this with a bandpass in a given Frequency band filtered, squared and then over the observed time interval integrated, especially in the range 0 ° -40 ° crank angle to ZOT. exceeds the resulting calculated integral has a predefinable threshold, This will be an indication of knocking scored. Neither the location of the structure-borne sound excitation, still the kind of the excitation (noise, impulse) can be determined.
Im Artikel "Klopfregelung für Ottomotoren", MTZ 1/2004 Jahrgang 65, S.26 ff, wird ein Klopferkennungssystem mit einem Sensor beschrieben, dessen Signal nach Bandpassfilterung, Quadrierung und Integration an bis zu drei Filterbänken als Spannungssignal zur Verfügung steht. Die Auswertung wird für jeden Zylinder individuell, in einem Zeitfenster von ca. 0–40 Grad Kurbelwinkel nach ZOT durchgeführt. Eine klopfende Verbrennung wird durch Spannungswerte erkannt, welche einen vorgegebenen Schwellenwert überschreiten.in the Article "knock control for gasoline engines ", MTZ 1/2004 vintage 65, p.26 ff, a knock detection system with a sensor is described, its signal after bandpass filtering, squaring and integration on up to three filter banks available as a voltage signal stands. The evaluation is for each cylinder individually, in a time window of about 0-40 degrees Crank angle performed after ZOT. A knocking combustion is detected by voltage values, which exceed a predetermined threshold.
Bei dem beschriebenen Verfahren können beim Betrieb des Verbrennungsmotor durch bewegte Bauteile, wie z. B. Komponenten der Gaswechselsteuerung, Grundtriebwerk, Ausgleichswellen, Kolbenspritzen, innerhalb und außerhalb des Motors angebrachte Anbauteile, entstehende Störgeräusche fälschlicher Weise als klopfende Verbrennung erkannt werden und zu Eingriffen am Zündzeitpunkt führen, welche den Kraftstoffverbrauch erhöhen. Insbesondere bei modernen Leichtmetallmotoren, bei denen das Kurbelgehäuse bzw. der Zylinderkopf aus Aluminium oder Aluminiumlegierungen hergestellt sind, wird die Klopfgeräuschübertragung infolge hochfrequenter nutzsignalidentischer Störgeräusche erheblich beeinträchtigt.at the described method can during operation of the internal combustion engine by moving components, such. B. components of the gas exchange control, basic engine, balance shafts, Piston spraying, mounted inside and outside the engine Add-on parts, resulting interference sounds wrong Be recognized as knocking combustion and intervention at the ignition point to lead, which increase the fuel consumption. Especially with modern ones Alloy engines in which the crankcase or the cylinder head Aluminum or aluminum alloys are made, the knocking noise transmission is due high frequency signal-identical noise significantly affected.
Eine sichere Erkennung einer klopfenden Verbrennung an Verbrennungsmotoren erlaubt eine aggressivere Applikation des Zündzeitpunktes und führt zu einem reduzierten Kraftstoffverbrauch.A reliable detection of knocking combustion on combustion engines allows a more aggressive application of the ignition and leads to a reduced fuel consumption.
Aufgabe der Erfindung ist es, eine verbesserte Vorrichtung zur Klopfgeräuscherkennung für einen Verbrennungsmotor, zur Verfügung zu stellen, die mechanisch verursachte Störgeräuschkomponenten nahezu unberücksichtigt lässt.task The invention is an improved device for knocking noise detection for one Internal combustion engine, available to put the mechanically induced noise components almost unconsidered leaves.
Die Erfindung löst diese Aufgabe durch Bereitstellung einer Vorrichtung zur Klopfgeräuscherkennung mit den Merkmalen des Patentanspruchs 1 oder 4.The Invention solves this object by providing a device for knocking noise detection with the features of claim 1 or 4.
Vorteilhafte Ausführungsformen und Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen angegeben.advantageous embodiments and further developments of the invention are specified in the dependent claims.
Eine erste erfindungsgemäße Vorrichtung zur Klopfgeräuscherkennung für einen Verbrennungsmotor umfasst einen ersten und einen zweiten Sensor, die räumlich von einander getrennt angeordnet sind, eine Auswerteeinheit mit einer Korrelationseinheit, welche aus den beiden Sensorsignalen eine Kreuzkorrelation berechnet, um einen Klopfgeräuschentstehungsort räumlich zu orten. Durch diese Analyse des zeitlichen Versatzes zwischen den zwei Sensorsignalen ist ein "Richtungshören" möglich, d.h. der Entstehungsort des Geräusches kann geortet werden und eine Fehlerkennung durch Störgeräuschquellen wie z.B. Steuerkette, Ventil-Aufsetzen kann in vorteilhafter Weise vermieden werden.A first device according to the invention for knocking sound detection for one Internal combustion engine comprises a first and a second sensor, the spatially are separated from each other, an evaluation with a correlation unit, which consists of the two sensor signals calculates a cross correlation to a knocking sound origination location spatial to locate. Through this analysis of the time lag between the two sensor signals are capable of "directional hearing", i. the place of origin of the noise can be located and an error detection by noise sources such as. Timing chain, valve seat can be in an advantageous manner be avoided.
Eine zweite erfindungsgemäße Vorrichtung zur Klopfgeräuscherkennung für einen Verbrennungsmotor umfasst einen Sensor, der ein erstes Signal aufnimmt und zur Auswertung an eine Auswerteeinheit überträgt, die einen ersten Bandfilter umfasst, der das erste Signal in einem ersten Bandbereich zur Erzeugung eines ersten Filtersignals filtert und einen zweiten Bandfilter umfasst, der das erste Signal in einem zweiten vom ersten Bandbereich verschiedene Bandbereich zur Erzeugung eines zweiten Filtersignals filtert, wobei die Auswerteeinheit eine Korrelatoreinheit umfasst, welche eine Kreuzkorrelation der beiden Filtersignale berechnet, um ein impulshaltiges Signal zur erkennen. Durch die Analyse des gleichzeitigen Auftretens eines Geräuschsignals in einem Sensorsignal in zwei unterschiedlichen gefilterten Frequenzbereichen, kann ein impulshaltiges Klopfsignal von gleichförmigen Störsignalen wie Kettenheulen, Reibungsgeräusche usw. unterschieden werden.A second device according to the invention for knocking sound detection for one Internal combustion engine includes a sensor which receives a first signal and for evaluation to an evaluation unit which transmits a first bandpass filter comprising the first signal in a first band region for generating a filter first filter signal and comprises a second bandpass filter, the first signal in a second different from the first band range Band area for generating a second filter signal filters, wherein the evaluation unit comprises a correlator unit which has a Cross-correlation of the two filter signals calculated to a pulse-containing Signal to recognize. By analyzing the simultaneous occurrence a noise signal in a sensor signal in two different filtered frequency ranges, can be a pulsed knocking signal of uniform noise such as chain whines, friction noise etc. are distinguished.
Die beiden erfindungsgemäßen Vorrichtungen ermöglichen eine verbesserte Erkennung einer klopfenden Verbrennung in einem Verbrennungsmotor und vermeiden durch Störquellen verursachte Fehlerkennungen von Klopfvorgängen, welche zu Leistungseinbußen am Motor führen können. Die wirksamere Klopferkennung ignoriert mechanisch verursachte Geräuschkomponenten an den Klopfsensoren und vermeidet altersbedingte Verschlechterung der Motorleistung durch Zündeingriffe bei der Klopfregelung. Die erfindungsgemäßen Vorrichtungen können auch bei Leichtmetallmotoren zur besseren Erkennung von Störgeräuschquellen eingesetzt werden, wodurch verhindert wird, dass bei einem Erkennungsvorgang für eine klopfende Verbrennung Störgeräusche berücksichtigt werden.The two devices according to the invention enable an improved detection of knocking combustion in one Combustion engine and avoid errors caused by sources of interference knocking, which to performance losses on the engine lead can. The more effective knock detection ignores mechanically induced noise components at the knock sensors and avoids age-related deterioration the engine power by ignition interventions in the knock control. The devices according to the invention can also in light metal engines for better detection of noise sources be used, thereby preventing that in a recognition process for one knocking combustion noise is considered become.
In Ausgestaltung der ersten Vorrichtung zur Klopfgeräuscherkennung kann die Auswerteeinheit zusätzlich einen Bandfilter umfassen, welcher das erste und/oder zweite Sensorsignal in einem ersten Bandbereich zur Erzeugung eines ersten Filtersignals filtert.In Embodiment of the first device for knocking noise detection In addition, the evaluation unit a bandpass filter comprising the first and / or second sensor signal in a first band region for generating a first filter signal filters.
In weiterer Ausgestaltung der ersten Vorrichtung kann diese mit den Komponenten der zweiten Vorrichtung kombiniert werden und neben der Ortung des Klopfgeräuschentstehungsorts auch impulshaltige Klopfsignale von gleichförmigen Störsignalen unterschieden werden, wodurch die Klopfgeräuscherkennung weiter verbessert wird.In Another embodiment of the first device, this with the Components of the second device are combined and alongside the location of the knocking noise location also impulsive knocking signals are distinguished from uniform interfering signals, whereby the knocking sound detection continues is improved.
Zur Aufbereitung der Sensorsignale kann die Auswerteeinheit beispielsweise mindestens eine Quadriereinheit und/oder mindestens eine Integriereinheit umfassen, welche mindestens eines der quadrierten Filtersignale über ein zu beobachtendes Zeitintervall zur Klopfgeräuscherkennung integriert.to Preparation of the sensor signals, the evaluation unit, for example at least one squaring unit and / or at least one integrating unit comprising at least one of the squared filter signals via a integrated time interval for knocking noise detection integrated.
In weiterer Ausgestaltung sind die Komponenten der Auswerteeinheit in einem gemeinsamen Klopfgeräuscherkennungschip integriert. Dadurch kann die Signalabtastung und die Kreuzkorrelation zur Klopferkennung in vorteilhafter Weise ohne zusätzliche Änderungen in existierende Motorsteuergeräte integrierte werden.In Further refinement, the components of the evaluation unit in a common knocking sound detection chip integrated. This allows signal sampling and cross-correlation for knock detection advantageously without additional changes in existing engine control units be integrated.
Eine vorteilhafte Ausführungsform der Erfindung ist in den Zeichnungen dargestellt und wird nachfolgend beschrieben.A advantageous embodiment The invention is illustrated in the drawings and will become apparent below described.
Dabei zeigen:there demonstrate:
Wie
aus
Die
Lage des Maximums der Kreuzkorrelation kann als Versatz zwischen
den beiden Signalen interpretiert werden. Dies kann zur Ortung der
Ausbreitungsrichtung einer Körperschallwelle
genutzt werden, wodurch eine Ortung des Geräuschentstehungsortes möglich ist.
Die Ausgabe der Korrelatoreinheit
Wie
aus
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200410036502 DE102004036502A1 (en) | 2004-07-28 | 2004-07-28 | Device for recognizing knocking noise comprises a first sensor for receiving a first signal and transferring to an evaluation unit and a second sensor arranged spatially displaced to the first sensor for receiving a second signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200410036502 DE102004036502A1 (en) | 2004-07-28 | 2004-07-28 | Device for recognizing knocking noise comprises a first sensor for receiving a first signal and transferring to an evaluation unit and a second sensor arranged spatially displaced to the first sensor for receiving a second signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE102004036502A1 true DE102004036502A1 (en) | 2006-04-06 |
Family
ID=36061766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE200410036502 Withdrawn DE102004036502A1 (en) | 2004-07-28 | 2004-07-28 | Device for recognizing knocking noise comprises a first sensor for receiving a first signal and transferring to an evaluation unit and a second sensor arranged spatially displaced to the first sensor for receiving a second signal |
Country Status (1)
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|---|---|
| DE (1) | DE102004036502A1 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012021053A1 (en) * | 2012-10-25 | 2014-04-30 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Knocking location determination device for determining position of knocking incineration sources in combustion engine, has evaluation unit selecting time values from storage to determine position of sources |
| CN104564391A (en) * | 2013-10-25 | 2015-04-29 | 雅马哈发动机株式会社 | Power unit of saddle-riding type vehicle and saddle-riding type vehicle |
| EP2873841A3 (en) * | 2013-10-25 | 2015-11-25 | Yamaha Hatsudoki Kabushiki Kaisha | Power unit, vehicle and method for controlling power unit |
| EP3040544A1 (en) * | 2014-12-31 | 2016-07-06 | General Electric Company | System and method for locating engine noise |
| DE102015203496A1 (en) * | 2015-02-26 | 2016-09-01 | Mtu Friedrichshafen Gmbh | Method for operating or designing an internal combustion engine and internal combustion engine |
| WO2017011206A1 (en) * | 2015-07-10 | 2017-01-19 | General Electric Company | Panoramic knock sensor systems and methods for engine component health detection |
| WO2019101650A1 (en) * | 2017-11-21 | 2019-05-31 | Mtu Friedrichshafen Gmbh | Method for operating an internal combustion engine having at least one combustion chamber and internal combustion engine for carrying out such a method |
| US11255288B2 (en) * | 2018-05-23 | 2022-02-22 | Ford Global Technologies, Llc | Method and system for determining engine knock background noise levels |
| CN121208599A (en) * | 2025-11-27 | 2025-12-26 | 北京超摩科技有限公司 | Phase noise analysis method, apparatus, device and storage medium |
-
2004
- 2004-07-28 DE DE200410036502 patent/DE102004036502A1/en not_active Withdrawn
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012021053B4 (en) * | 2012-10-25 | 2014-12-04 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Knock location determination method and knock location determination device for internal combustion engines |
| DE102012021053A1 (en) * | 2012-10-25 | 2014-04-30 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Knocking location determination device for determining position of knocking incineration sources in combustion engine, has evaluation unit selecting time values from storage to determine position of sources |
| CN104564391B (en) * | 2013-10-25 | 2017-04-12 | 雅马哈发动机株式会社 | Power unit of saddle-riding type vehicle and saddle-riding type vehicle |
| CN104564391A (en) * | 2013-10-25 | 2015-04-29 | 雅马哈发动机株式会社 | Power unit of saddle-riding type vehicle and saddle-riding type vehicle |
| EP2873841A3 (en) * | 2013-10-25 | 2015-11-25 | Yamaha Hatsudoki Kabushiki Kaisha | Power unit, vehicle and method for controlling power unit |
| EP3040544A1 (en) * | 2014-12-31 | 2016-07-06 | General Electric Company | System and method for locating engine noise |
| CN105928610A (en) * | 2014-12-31 | 2016-09-07 | 通用电气公司 | System and method for locating engine noise |
| US9752949B2 (en) | 2014-12-31 | 2017-09-05 | General Electric Company | System and method for locating engine noise |
| DE102015203496A1 (en) * | 2015-02-26 | 2016-09-01 | Mtu Friedrichshafen Gmbh | Method for operating or designing an internal combustion engine and internal combustion engine |
| DE102015203496B4 (en) * | 2015-02-26 | 2017-07-20 | Mtu Friedrichshafen Gmbh | Method for operating or designing an internal combustion engine and internal combustion engine |
| WO2017011206A1 (en) * | 2015-07-10 | 2017-01-19 | General Electric Company | Panoramic knock sensor systems and methods for engine component health detection |
| WO2019101650A1 (en) * | 2017-11-21 | 2019-05-31 | Mtu Friedrichshafen Gmbh | Method for operating an internal combustion engine having at least one combustion chamber and internal combustion engine for carrying out such a method |
| CN111630259A (en) * | 2017-11-21 | 2020-09-04 | Mtu 腓特烈港有限责任公司 | Method for operating an internal combustion engine having at least one combustion space and internal combustion engine for carrying out such a method |
| US11306694B2 (en) | 2017-11-21 | 2022-04-19 | Rolls-Royce Solutions GmbH | Method for operating an internal combustion engine having at least one combustion chamber and internal combustion engine for carrying out such a method |
| US11255288B2 (en) * | 2018-05-23 | 2022-02-22 | Ford Global Technologies, Llc | Method and system for determining engine knock background noise levels |
| CN121208599A (en) * | 2025-11-27 | 2025-12-26 | 北京超摩科技有限公司 | Phase noise analysis method, apparatus, device and storage medium |
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Owner name: DAIMLERCHRYSLER AG, 70327 STUTTGART, DE |
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| 8127 | New person/name/address of the applicant |
Owner name: DAIMLER AG, 70327 STUTTGART, DE |
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