WO2024251645A1 - Procédé de maintenance prédictive du capteur de vilebrequin d'un moteur à piston et module associé - Google Patents
Procédé de maintenance prédictive du capteur de vilebrequin d'un moteur à piston et module associé Download PDFInfo
- Publication number
- WO2024251645A1 WO2024251645A1 PCT/EP2024/065162 EP2024065162W WO2024251645A1 WO 2024251645 A1 WO2024251645 A1 WO 2024251645A1 EP 2024065162 W EP2024065162 W EP 2024065162W WO 2024251645 A1 WO2024251645 A1 WO 2024251645A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- current
- crankshaft
- rotation speed
- sensor
- heat engine
- 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.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0097—Electrical control of supply of combustible mixture or its constituents using means for generating speed signals
-
- 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
-
- 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
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
- F02D41/2474—Characteristics of 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2477—Methods of calibrating or learning characterised by the method used for learning
- F02D41/248—Methods of calibrating or learning characterised by the method used for learning using a plurality of learned values
-
- 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
-
- 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
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/101—Engine speed
Definitions
- the camshaft is rotated by the crankshaft.
- the crankshaft is a mechanical device that allows, by means of a connecting rod, the transformation of the rectilinear movement of a piston into a continuous rotational movement, and vice versa, thus ensuring the transmission of the combustion energy of the fuel in the cylinders into mechanical energy.
- knowing the angular position of the crankshaft makes it possible to know a reliable angular reference on the basis of which each phase of each cylinder is determined.
- Such a reference is available via a toothed wheel, also called a target, integral in rotation with the crankshaft.
- the wheel is associated with a dedicated sensor, called a crankshaft sensor, whose role is ultimately to allow the determination of the angular position and the rotation speed of the toothed wheel.
- the sensor is equipped with a sensitive element.
- the wheel is metallic and the sensitive element is capable of detecting metal, such as a Hall effect sensor.
- the profile of the wheel typically includes a target which is provided with markers distributed on its periphery.
- the function of the crankshaft sensor is to transform the measured magnetic field into an electrical signal and thus to provide a potential signal on two wires connected to it.
- the rotation of the rotating target causes periodic changes in the magnetic flux due to the passage of the markers, which are transformed by the sensor into voltage variations that can subsequently be sent to the engine management computer.
- the voltage variations include rising edges and falling edges forming a periodic signal synchronized with the passage of the markers in front of the sensor.
- crankshaft sensor From the voltage data produced by the crankshaft sensor, the person skilled in the art knows how to calculate the rotational speed and the angular position of the crankshaft to obtain the basic data necessary for determining the injection point and adjusting the ignition advance point.
- the aging of the sensor leads to a decrease in its magnetic effect.
- the determination of the position by means of the magnet is less precise, and teeth may appear missing after processing the electrical signal, in particular by clipping.
- the method is implemented by a calculation unit having undergone a modeling step comprising a determination of a nominal operating range in voltage of the crankshaft sensor as a function of a set of parameters, the set of parameters comprising at least one rotation speed of the heat engine.
- the method comprises a step of detecting the wear of the magnetic sensor from a set of current parameters, the set of current parameters comprising at least one current rotation speed of the heat engine, the detection step comprising:
- the current amplitude value of the voltage signal can be determined from an acquisition of the voltage generated by the crankshaft sensor over a predetermined time window.
- the current rotational speed of the heat engine can be determined from an acquisition of the voltage generated by the crankshaft sensor over a predetermined time window.
- the step of generating an alarm is followed by a step of replacing, or repairing, the crankshaft sensor performed by a human operator.
- the module is further configured to detect wear of the magnetic sensor from a set of current parameters, the set of current parameters comprising at least one current rotation speed of the heat engine, the detection comprising:
- the computing unit undergoes a calibration step Em, the calibration step Em comprising a determination of a nominal voltage operating range of the crankshaft sensor as a function of a set of parameters.
- the calibration step can also be called a “modeling step”.
- the calibration step Em is carried out prior to the implementation of the method according to the invention, for example on a test vehicle representative of another vehicle equipped with the module M according to the invention.
- the calibration step Em can be implemented on a vehicle whose crankshaft magnetic sensor S is new, for example after the replacement of the magnetic sensor.
- Figure 3 illustrates an example of a G1 evolution graph of the rotation speed of a heat engine as a function of time and a G2 graph of a voltage signal generated at the same times. by a magnetic sensor, said voltage signal being an alternating signal whose amplitude is delimited by an envelope E.
- Figure 4 illustrates an example of a nominal operating domain obtained during the calibration step.
- the maximum voltage is plotted on the abscissa axis while the engine rotation speed is plotted on the ordinate axis.
- the curve results from segments that connect a set of calibration points. It is observed that the maximum voltage delivered by the magnetic sensor S increases with the increase in the rotation speed of the thermal engine.
- the detection step involves an acquisition of a current rotation speed of the thermal engine, linked to a current rotation speed of the crankshaft (A).
- the current engine rotation speed can be determined from the voltage generated by the crankshaft sensor S over a predetermined time window. This method is also known to those skilled in the art.
- the voltage on a wire can be measured over a period of a predetermined tooth of the target C.
- the period can be identified by analysis of the succession of rising and falling edges, according to procedures known to those skilled in the art.
- the current amplitude value of the voltage signal may be received from an Engine Control Unit (ECU) configured to determine the current voltage.
- ECU Engine Control Unit
- the deviation between the current voltage value and the nominal operating range is, for example, the Euclidean distance, i.e. the length separating the current amplitude value of the voltage signal and the nominal operating range.
- the current parameter set can include a current temperature.
- the current temperature can be measured, for example by means of temperature sensors.
- the module can alternatively receive the current temperature information from the engine control unit ECU. This is usually the oil or cooling water temperature, which are closest to the sensor value and the crankshaft target.
- the deviation is additionally determined from the current temperature.
- the deviation can be directly determined.
- the P method also includes a step of generating an alarm when the deviation is greater than a predetermined threshold.
- the Et alarm generation step can be followed by a repair or replacement step Er of the crankshaft sensor S performed by a human operator.
- the module M can be implemented in the form of an electronic module comprising a memory in which is stored a computer program product comprising instructions intended to be executed by the calculation unit UC or by the engine control unit ECU which then replaces the calculation unit UC.
- the method according to the invention and the corresponding module can be implemented with sensors other than magnetic, provided that the sensor is sensitive to the passage of target reference elements.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020257040914A KR20260003352A (ko) | 2023-06-09 | 2024-06-03 | 피스톤 엔진의 크랭크샤프트 센서의 예측 정비를 달성하는 방법 및 관련 모듈 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FRFR2305856 | 2023-06-09 | ||
| FR2305856A FR3149646A1 (fr) | 2023-06-09 | 2023-06-09 | Procédé de maintenance prédictive du capteur de vilebrequin d’un moteur à piston et module associé |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024251645A1 true WO2024251645A1 (fr) | 2024-12-12 |
Family
ID=87974636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2024/065162 Ceased WO2024251645A1 (fr) | 2023-06-09 | 2024-06-03 | Procédé de maintenance prédictive du capteur de vilebrequin d'un moteur à piston et module associé |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR20260003352A (fr) |
| FR (1) | FR3149646A1 (fr) |
| WO (1) | WO2024251645A1 (fr) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1400785A2 (fr) * | 2002-09-17 | 2004-03-24 | Robert Bosch Gmbh | Procédé de correction de l'erreur de mesure d'un capteur |
| GB2491110A (en) * | 2011-05-19 | 2012-11-28 | Gm Global Tech Operations Inc | Method of operating an internal combustion engine having crankshaft position sensor correction means |
| FR3027388A1 (fr) * | 2014-10-16 | 2016-04-22 | Continental Automotive France | Procede de communication d'un dysfonctionnement d'un systeme de mesure de vitesse et de sens de rotation d'un arbre rotatif |
-
2023
- 2023-06-09 FR FR2305856A patent/FR3149646A1/fr active Pending
-
2024
- 2024-06-03 KR KR1020257040914A patent/KR20260003352A/ko active Pending
- 2024-06-03 WO PCT/EP2024/065162 patent/WO2024251645A1/fr not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1400785A2 (fr) * | 2002-09-17 | 2004-03-24 | Robert Bosch Gmbh | Procédé de correction de l'erreur de mesure d'un capteur |
| GB2491110A (en) * | 2011-05-19 | 2012-11-28 | Gm Global Tech Operations Inc | Method of operating an internal combustion engine having crankshaft position sensor correction means |
| FR3027388A1 (fr) * | 2014-10-16 | 2016-04-22 | Continental Automotive France | Procede de communication d'un dysfonctionnement d'un systeme de mesure de vitesse et de sens de rotation d'un arbre rotatif |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20260003352A (ko) | 2026-01-06 |
| FR3149646A1 (fr) | 2024-12-13 |
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