WO2019219114A1 - Method for monitoring a quality of an engine torque of an internal combustion engine transmitted by a clutch during a biting point determination - Google Patents

Method for monitoring a quality of an engine torque of an internal combustion engine transmitted by a clutch during a biting point determination Download PDF

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Publication number
WO2019219114A1
WO2019219114A1 PCT/DE2019/100311 DE2019100311W WO2019219114A1 WO 2019219114 A1 WO2019219114 A1 WO 2019219114A1 DE 2019100311 W DE2019100311 W DE 2019100311W WO 2019219114 A1 WO2019219114 A1 WO 2019219114A1
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WO
WIPO (PCT)
Prior art keywords
clutch
engine torque
monitoring
predetermined period
torque
Prior art date
Application number
PCT/DE2019/100311
Other languages
German (de)
French (fr)
Inventor
Werner Schmitt
Original Assignee
Schaeffler Technologies AG & Co. KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Priority to DE112019002439.6T priority Critical patent/DE112019002439A5/en
Publication of WO2019219114A1 publication Critical patent/WO2019219114A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
    • F16D48/068—Control by electric or electronic means, e.g. of fluid pressure using signals from a manually actuated gearshift linkage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/10—System to be controlled
    • F16D2500/104—Clutch
    • F16D2500/10406—Clutch position
    • F16D2500/10412—Transmission line of a vehicle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/10—System to be controlled
    • F16D2500/104—Clutch
    • F16D2500/10443—Clutch type
    • F16D2500/1045—Friction clutch
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/10—System to be controlled
    • F16D2500/108—Gear
    • F16D2500/1081—Actuation type
    • F16D2500/1083—Automated manual transmission
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/10—System to be controlled
    • F16D2500/11—Application
    • F16D2500/1107—Vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/30—Signal inputs
    • F16D2500/306—Signal inputs from the engine
    • F16D2500/3065—Torque of the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/30—Signal inputs
    • F16D2500/308—Signal inputs from the transmission
    • F16D2500/30806—Engaged transmission ratio
    • F16D2500/30808—Detection of transmission in neutral
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/30—Signal inputs
    • F16D2500/314—Signal inputs from the user
    • F16D2500/31406—Signal inputs from the user input from pedals
    • F16D2500/31426—Brake pedal position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/30—Signal inputs
    • F16D2500/314—Signal inputs from the user
    • F16D2500/3146—Signal inputs from the user input from levers
    • F16D2500/31466—Gear lever
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/50—Problem to be solved by the control system
    • F16D2500/502—Relating the clutch
    • F16D2500/50245—Calibration or recalibration of the clutch touch-point
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/50—Problem to be solved by the control system
    • F16D2500/502—Relating the clutch
    • F16D2500/50245—Calibration or recalibration of the clutch touch-point
    • F16D2500/50251—During operation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/50—Problem to be solved by the control system
    • F16D2500/502—Relating the clutch
    • F16D2500/50245—Calibration or recalibration of the clutch touch-point
    • F16D2500/50251—During operation
    • F16D2500/50254—Brake actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/50—Problem to be solved by the control system
    • F16D2500/502—Relating the clutch
    • F16D2500/50245—Calibration or recalibration of the clutch touch-point
    • F16D2500/50251—During operation
    • F16D2500/5026—Gear engaged
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/50—Problem to be solved by the control system
    • F16D2500/502—Relating the clutch
    • F16D2500/50245—Calibration or recalibration of the clutch touch-point
    • F16D2500/50251—During operation
    • F16D2500/50263—During standing still
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/70—Details about the implementation of the control system
    • F16D2500/704—Output parameters from the control unit; Target parameters to be controlled
    • F16D2500/70402—Actuator parameters
    • F16D2500/7041—Position
    • F16D2500/70414—Quick displacement to clutch touch point
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/70—Details about the implementation of the control system
    • F16D2500/706—Strategy of control
    • F16D2500/70673—Statistical calculations
    • F16D2500/70689—Statistical calculations using maximum or minimum values

Definitions

  • the invention relates to a method for monitoring a quality of an engine torque transmitted from a clutch of an internal combustion engine at a Tastretekar, which takes place during commissioning of the clutch, in which fluctuations of the Mo tormomentes be monitored.
  • the invention has for its object to provide a method in which a ge exact determination of the touch point is ensured.
  • the object is achieved in that at an unstable engine torque, the Tast Vietnamese adjuvant is canceled.
  • the engine torque is monitored at the beginning of a touch-point determination routine over a predetermined period of time, wherein when a threshold value is exceeded, tes by the fluctuations of the engine torque, the Tast Vietnamese adjufactoring factor, the Tast Vietnamese adjuvant is canceled.
  • the clutch is held in a "open" position at the beginning of the Tast Vietnamese artificialsroutine during the pre-specified period. This eliminates any influence of the clutch on the engine torque in monitoring the fluctuations of the engine torque.
  • the predetermined period of time is determined by calibration.
  • the predetermined period of time can be adapted to the clutch / transmission unit to be tested.
  • the engine torque is monitored for maximum deviations, wherein a difference between a maximum and a minimum torque value is formed at the end of the predetermined period of time, which is compared with a difference threshold value and the touchpoint determination routine is aborted if the difference threshold value is exceeded.
  • a start of the monitoring of the engine torque is performed by a diagnosis sekommando, which is output from an external test device.
  • the timing of the monitoring can be set arbitrarily.
  • the Tast Vietnamese Annutica is executed in a gear in a laid gear and operated brake, wherein the touch point of the clutch by Ver push the clutch from a position "open” in the direction of a position "closed” with means of driving the clutch by a clutch actuator is detected by a higher STEU er réelle.
  • the exact clutch characteristic can be adjusted by the determination of the touch point.
  • the clutch is used in a clutch pedalless clutch system which operates a manual transmission.
  • the invention allows numerous embodiments. One of them will be explained in more detail with reference to the figures shown in the drawing.
  • 1 is a schematic diagram of an electronic clutch management system
  • Fig. 2 shows an embodiment for carrying out the method according to the invention.
  • Fig. 1 is a schematic diagram of an electronic clutch management system 1 is shown.
  • a clutch 4 is disposed between a United combustion engine 2 and a transmission 3.
  • the transmission 3 is connected to the clutch 4 via a transmission input shaft 5, while the transmission output via a transmission output shaft 6 leads to the vehicle wheels 7.
  • the clutch 4 is actuated by egg nem, an electric motor 8 comprehensive clutch actuator 9, wherein the electric motor 8 actuates a piston in a master cylinder 10, by means of which a hydraulic fluid is conveyed to a slave cylinder 11, whereby the piston 12 of the slave cylinder 11, the clutch 4 is actuated ,
  • the clutch actuator 9 is controlled by a clutch control unit 13 on.
  • the clutch control unit 13 is, as shown in Fig. 2, connected to a parent Ge operation control unit 14 via an internal data bus 15.
  • the transmission control unit 14 is coupled to a vehicle control unit 16 via a vehicle data bus 17, for example a CAN bus, to which various control devices, such as a motor control unit 18, are connected.
  • the engine control unit 18 controls the operation of the internal combustion engine 2.
  • a Tast Vietnamese or other suitable type of the clutch 4 is started during the Inbe driveability of the clutch / transmission unit at the end of the tape at an engaged gear of the transmission 3 and operated brake by an external tester.
  • This signal is passed from the transmission control unit 14 to the hitch be control unit 13, which controls the clutch actuator 9 such that the clutch 4 is moved from the position "open” in the direction of the position "closed”.
  • the engine torque output from the engine 2 is output from the engine control unit 18 the vehicle data bus 17 is sent and monitored there. During the monitoring, maximum deviations of the engine torque are detected. At the end of the predetermined period, a difference between a maximum value and a minimum value of the engine torque is averaged. This difference is compared with a calibratable threshold value, wherein when the threshold value is exceeded, the touch point determination routine is aborted with the error "Engine Torque Instable".

Abstract

The invention relates to a method for monitoring a quality of an engine torque of an internal combustion engine transmitted by a clutch during a biting point determination that is performed during a commencement of operation of the clutch, in which method fluctuations of the engine torque are monitored. In a method with which the biting point is determined reliably, the biting point determination is terminated in the presence of an unstable engine torque.

Description

Verfahren zur Überwachung einer Qualität eines von einer Kupplung übertragenen Motormomentes eines Verbrennungsmotors bei einer Tastpunktermittlunq  A method of monitoring a quality of an engine torque transmitted by a clutch of an internal combustion engine at a Tastpunktermittlunq
Die Erfindung betrifft ein Verfahren zur Überwachung einer Qualität eines von einer Kupplung übertragenen Motormomentes eines Verbrennungsmotors bei einer Tastpunktermittlung, die während einer Inbetriebnahme der Kupplung erfolgt, bei welchem Schwankungen des Mo tormomentes überwacht werden. The invention relates to a method for monitoring a quality of an engine torque transmitted from a clutch of an internal combustion engine at a Tastpunktermittlung, which takes place during commissioning of the clutch, in which fluctuations of the Mo tormomentes be monitored.
Aus der DE 103 51 906 A1 ist ein Verfahren zum Überwachen eines Motormomentes und/oder einer Motordrehzahl bei einem Fahrzeug mit einem Antriebsmoment und einem au tomatisierten Getriebe im Antriebsstrang bei einer Tastpunktermittlung während einer Inbe triebnahme des Getriebes bekannt, bei welchem ein erweitertes Toleranzband bezogen auf die Motordrehzahl verwendet wird, welches derart ausgestaltet ist, dass das geringfügige Mo- tomomenten- oder Drehzahlstreuungen zugelassen werden, jedoch starke Schwankungen de- tektiert werden. From DE 103 51 906 A1 a method for monitoring an engine torque and / or an engine speed in a vehicle with a drive torque and an au tomatisierten gearbox in the drive train at a Tastpunktermittlung during a commissioning of the transmission transmission is known, in which an extended tolerance band based on the engine speed is used, which is designed such that the slight moment or torque variations are permitted, but strong fluctuations are detected.
Bei der Tastpunktermittlung wird das Motormoment des Verbrennungsmotors beobachtet, welches ansteigt, sobald die Kupplung ein Moment überträgt. Sobald ein gefiltertes Motormo ment eine Abweichung von 3 Nm zeigt, ist der Tastpunkt gefunden und wird abgespeichert. Im Falle eines instabilen Motormomentes ist zu erwarten, dass auf Grund der Instabilität des Mo tormomentes die detektierte Position des Tastpunktes nicht mit dem tatsächlichen Tastpunkt übereinstimmt. In the Tastpunktermittlung the engine torque of the engine is observed, which increases as soon as the clutch transmits a moment. As soon as a filtered engine torque shows a deviation of 3 Nm, the touch point is found and stored. In the case of an unstable engine torque is to be expected that due to the instability of Mo tormomentes the detected position of the touch point does not match the actual touch point.
Der Erfindung liegt die Aufgabe zugrunde ein Verfahren anzugeben, bei welchem eine ge naue Ermittlung des Tastpunktes sichergestellt wird. The invention has for its object to provide a method in which a ge exact determination of the touch point is ensured.
Erfindungsgemäß ist die Aufgabe dadurch gelöst, dass bei einem instabilen Motormoment die Tastpunktermittlung abgebrochen wird. Durch die Überwachung des Motormomentes auf Sta bilität bzw. Schwankungen im Rahmen der Tastpunktermittlung, wird gewährleistet, dass die Tastpunktermittlung nur durchgeführt wird, wenn das Motormoment als annähernd stabil an gesehen wird. According to the invention the object is achieved in that at an unstable engine torque, the Tastpunktermittlung is canceled. By monitoring the engine torque on Sta stability or fluctuations in the context of the Tastpunktermittlung, it is ensured that the Tastpunktermittlung is only performed when the engine torque is considered to be approximately stable at.
Vorteilhafterweise wird das Motormoment zu Beginn einer Tastpunktermittlungsroutine über einen vorgegebenen Zeitraum überwacht, wobei bei einer Überschreitung eines Schwellwer- tes durch die Schwankungen des Motormomentes die Tastpunktermittlung abgebrochen wird. Durch die Überwachung der Schwankungen des Motormomentes während des vorgegebenen Zeitraums wird eine zuverlässige Information darüber erhalten, in welchem Bereich die Schwankungen liegen. Advantageously, the engine torque is monitored at the beginning of a touch-point determination routine over a predetermined period of time, wherein when a threshold value is exceeded, tes by the fluctuations of the engine torque, the Tastpunktermittlung is canceled. By monitoring the fluctuations of the engine torque during the predetermined period of time, reliable information is obtained about the range in which the fluctuations lie.
In einer Ausgestaltung wird zu Beginn der Tastpunktermittlungsroutine während des vorgege benen Zeitraumes die Kupplung in einer Position„offen“ gehalten. Dadurch entfällt jeder Ein fluss der Kupplung auf das Motormoment bei der Überwachung der Schwankungen des Mo tormomentes. In one embodiment, the clutch is held in a "open" position at the beginning of the Tastpunktermittlungsroutine during the pre-specified period. This eliminates any influence of the clutch on the engine torque in monitoring the fluctuations of the engine torque.
In einer Ausführungsform wird der vorgegebene Zeitraum per Kalibration bestimmt. Somit kann der vorgegebene Zeitraum an die zu prüfende Kupplungs-/Getriebeeinheit angepasst werden. In one embodiment, the predetermined period of time is determined by calibration. Thus, the predetermined period of time can be adapted to the clutch / transmission unit to be tested.
In einer Variante wird das Motormoment auf Maximalabweichungen überwacht, wobei am En de des vorgegebenen Zeitraumes eine Differenz aus einem Maximal- und einem Minimalmo- mentenwert gebildet wird, welche mit einem Differenzschwellwert verglichen wird und bei Überschreitung des Differenzschwellwertes die Tastpunktermittlungsroutine abgebrochen wird. Dadurch wird eine zuverlässige Information über die tatsächliche Schwankungsbreite des Motormomentes einer Entscheidung über den Abbruch der Tastpunktermittlung zu Grun de gelegt. In one variant, the engine torque is monitored for maximum deviations, wherein a difference between a maximum and a minimum torque value is formed at the end of the predetermined period of time, which is compared with a difference threshold value and the touchpoint determination routine is aborted if the difference threshold value is exceeded. As a result, a reliable information about the actual fluctuation of the engine torque of a decision on the termination of the Tastpunktermittlung is set to green de.
Vorteilhafterweise erfolgt ein Start der Überwachung des Motormomentes durch ein Diagno sekommando, welches von einer externen Prüfeinrichtung ausgegeben wird. Somit kann der Zeitpunkt der Überwachung beliebig eingestellt werden. Advantageously, a start of the monitoring of the engine torque is performed by a diagnosis sekommando, which is output from an external test device. Thus, the timing of the monitoring can be set arbitrarily.
In einer Weiterbildung wird die Tastpunktermittlungsroutine bei einem in ein Getriebe einge legten Gang und betätigter Bremse ausgeführt, wobei der Tastpunkt der Kupplung durch Ver schieben der Kupplung von einer Position„offen“ in Richtung einer Position„geschlossen“ mit tels Ansteuerung der Kupplung durch einen Kupplungsaktor durch ein übergeordnetes Steu ergerät detektiert wird. Somit lässt sich die genaue Kupplungskennlinie durch die Ermittlung des Tastpunktes einstellen. In a further development, the Tastpunktermittlungsroutine is executed in a gear in a laid gear and operated brake, wherein the touch point of the clutch by Ver push the clutch from a position "open" in the direction of a position "closed" with means of driving the clutch by a clutch actuator is detected by a higher STEU ergerät. Thus, the exact clutch characteristic can be adjusted by the determination of the touch point.
In einer Ausgestaltung wird die Kupplung in einem kupplungspedalfreien Kupplungssystem verwendet, welches ein Handschaltgetriebe betätigt. Die Erfindung lässt zahlreiche Ausführungsformen zu. Eine davon soll anhand der in der Zeichnung dargestellten Figuren näher erläutert werden. In one embodiment, the clutch is used in a clutch pedalless clutch system which operates a manual transmission. The invention allows numerous embodiments. One of them will be explained in more detail with reference to the figures shown in the drawing.
Es zeigt: It shows:
Fig. 1 : eine Prinzipdarstellung eines elektronischen Kupplungsmanagementsystems, 1 is a schematic diagram of an electronic clutch management system,
Fig. 2 ein Ausführungsbeispiel zur Durchführung des erfindungsgemäßen Verfahrens. Fig. 2 shows an embodiment for carrying out the method according to the invention.
In Fig. 1 ist eine Prinzipdarstellung eines elektronischen Kupplungsmanagementsystems 1 dargestellt. Bei dem elektronischen Kupplungsmanagementsystem 1 ist zwischen einem Ver brennungsmotor 2 und einem Getriebe 3 eine Kupplung 4 angeordnet. Das Getriebe 3 ist mit der Kupplung 4 über eine Getriebeeingangswelle 5 verbunden, während der Getriebeausgang über eine Getriebeausgangswelle 6 an die Fahrzeugräder 7 führt. Die Kupplung 4 wird von ei nem, einen Elektromotor 8 umfassenden Kupplungsaktor 9 betätigt, wobei der Elektromotor 8 einen Kolben in einem Geberzylinder 10 betätigt, mittels welchem eine Hydraulikflüssigkeit zu einem Nehmerzylinder 11 gefördert wird, wodurch der Kolben 12 des Nehmerzylinders 11 die Kupplung 4 betätigt. Der Kupplungsaktor 9 wird dabei durch eine Kupplungsteuergerät 13 an gesteuert. In Fig. 1 is a schematic diagram of an electronic clutch management system 1 is shown. In the electronic clutch management system 1, a clutch 4 is disposed between a United combustion engine 2 and a transmission 3. The transmission 3 is connected to the clutch 4 via a transmission input shaft 5, while the transmission output via a transmission output shaft 6 leads to the vehicle wheels 7. The clutch 4 is actuated by egg nem, an electric motor 8 comprehensive clutch actuator 9, wherein the electric motor 8 actuates a piston in a master cylinder 10, by means of which a hydraulic fluid is conveyed to a slave cylinder 11, whereby the piston 12 of the slave cylinder 11, the clutch 4 is actuated , The clutch actuator 9 is controlled by a clutch control unit 13 on.
Die Kupplungssteuergerät 13 ist, wie in Fig. 2 dargestellt ist, mit einem übergeordneten Ge triebesteuergerät 14 über einen internen Datenbus 15 verbunden. Das Getriebesteuergerät 14 ist mit einen Fahrzeugsteuergerät 16 über einen Fahrzeugdatenbus 17, beispielsweise einem CAN-Bus gekoppelt, an welchem verschiedene Steuergeräte, wie beispielsweise ein Motor steuergerät 18, angeschlossen sind. Das Motorsteuergerät 18 steuert dabei den Betrieb des Verbrennungsmotors 2. The clutch control unit 13 is, as shown in Fig. 2, connected to a parent Ge operation control unit 14 via an internal data bus 15. The transmission control unit 14 is coupled to a vehicle control unit 16 via a vehicle data bus 17, for example a CAN bus, to which various control devices, such as a motor control unit 18, are connected. The engine control unit 18 controls the operation of the internal combustion engine 2.
Zur korrekten Bestimmung einer Kupplungskennlinie der Kupplung 4 wird während des Inbe triebnahmeprozesses der Kupplungs-/Getriebeeinheit am Bandende eine Tastpunktermitt lungsroutine bei einem eingelegten Gang des Getriebes 3 und betätigter Bremse durch einen externen Tester gestartet. Dieses Signal wird von dem Getriebesteuergerät 14 an das Kupp lungssteuergerät 13 weitergegeben, welches den Kupplungsaktor 9 derart ansteuert, dass die Kupplung 4 von der Position„offen“ in Richtung der Position„geschlossen“ verfahren wird. Zwischen dem Start der Tastpunktermittlungsroutine und der Weitergabe des Signals von dem Getriebesteuergerät 14 an das Kupplungssteuergerät 13 liegt ein vorgegebener Zeitraum von bis zu 5 s, in welchem die Kupplung 4 offen gehalten wird. In diesem Zeitraum wird das von dem Verbrennungsmotor 2 ausgegebene Motormoment von dem Motorsteuergerät 18 auf den Fahrzeugdatenbus 17 gesendet und dort überwacht. Bei der Überwachung werden Ma ximalabweichungen des Motormomentes detektiert. Am Ende des vorgegebenen Zeitraumes wird eine Differenz aus einem Maximalwert und einem Minimalwert des Motormomentes er mittelt. Diese Differenz wird mit einem kalibrierbaren Schwellwert verglichen, wobei bei einer Überschreitung des Schwellwertes die Tastpunktermittlungsroutine mit dem Fehler„Engine Torque Instable“ abgebrochen wird. For the correct determination of a clutch characteristic of the clutch 4, a Tastpunktermitt ment routine is started during the Inbe driveability of the clutch / transmission unit at the end of the tape at an engaged gear of the transmission 3 and operated brake by an external tester. This signal is passed from the transmission control unit 14 to the hitch be control unit 13, which controls the clutch actuator 9 such that the clutch 4 is moved from the position "open" in the direction of the position "closed". Between the start of the Tastpunktermittlungsroutine and the transmission of the signal from the transmission control unit 14 to the clutch control unit 13 is a predetermined period of up to 5 s, in which the clutch 4 is kept open. In this period, the engine torque output from the engine 2 is output from the engine control unit 18 the vehicle data bus 17 is sent and monitored there. During the monitoring, maximum deviations of the engine torque are detected. At the end of the predetermined period, a difference between a maximum value and a minimum value of the engine torque is averaged. This difference is compared with a calibratable threshold value, wherein when the threshold value is exceeded, the touch point determination routine is aborted with the error "Engine Torque Instable".
Bezugszeichenliste elektronisches KupplungsmanagementsystemReference numeral list electronic clutch management system
Verbrennungsmotor internal combustion engine
Getriebe  transmission
Kupplung  clutch
Getriebeeingangswelle  Transmission input shaft
Getriebeausgangswelle  Transmission output shaft
Fahrzeugräder  vehicle wheels
Elektromotor  electric motor
Kupplungsaktor  clutch actuator
Geberzylinder  Master cylinder
Nehmerzylinder  slave cylinder
Kolben  piston
Kupplungssteuergerät  Clutch control unit
Getriebesteuergerät  Transmission Control Module
interner Datenbus internal data bus
Fahrzeugsteuergerät  Vehicle control unit
Fahrzeugdatenbus  vehicle data
Motorsteuergerät  Engine control unit

Claims

Patentansprüche claims
1. Verfahren zur Überwachung einer Qualität eines von einer Kupplung übertragenen Mo tormomentes eines Verbrennungsmotors bei einer Tastpunktermittlung, die während einer Inbetriebnahme der Kupplung erfolgt, bei welchem Schwankungen des Mo tormomentes überwacht werden, dadurch gekennzeichnet, dass bei einem instabilen Motormoment die Tastpunktermittlung abgebrochen wird. 1. A method for monitoring a quality of a transmitted from a clutch Mo tor torque of an internal combustion engine at a Tastpunktermittlung, which takes place during commissioning of the clutch, in which fluctuations of Mo tormomentes be monitored, characterized in that at an unstable engine torque, the Tastpunktermittlung is canceled.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass das Motormoment zu Be ginn einer Tastpunktermittlungsroutine über einen vorgegebenen Zeitraum überwacht wird, wobei bei einer Überschreitung eines Schwellwertes durch die Schwankungen des Motormomentes die Tastpunktermittlung abgebrochen wird. 2. The method according to claim 1, characterized in that the engine torque is monitored to Be start a Tastpunktermittlungsroutine over a predetermined period, wherein when a threshold is exceeded by the fluctuations of the engine torque, the Tastpunktermittlung is canceled.
3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass zu Beginn der Tastpunk termittlungsroutine während des vorgegebenen Zeitraumes die Kupplung in einer Posi tion„offen“ gehalten wird. 3. The method according to claim 2, characterized in that at the beginning of the Tastpunk appointment routine during the predetermined period, the clutch is held in a posi tion "open".
4. Verfahren nach Anspruch 1 , 2 oder 3, dadurch gekennzeichnet, dass der vorgegebene Zeitraum per Kalibration bestimmt wird. 4. The method according to claim 1, 2 or 3, characterized in that the predetermined period is determined by calibration.
5. Verfahren nach mindestens einem der vorhergehenden Ansprüche, dadurch gekenn zeichnet, dass Motormoment auf Maximalabweichungen überwacht wird, wobei am Ende des vorgegebenen Zeitraumes eine Differenz aus einem Maximal- und einem Minimalmomentenwert gebildet wird, welche mit einem Differenzschwellwert verglichen wird und bei Überschreitung des Differenzschwellwertes die Tastpunktermittlungsrouti ne abgebrochen wird. 5. The method according to at least one of the preceding claims, characterized in that engine torque is monitored for maximum deviations, wherein at the end of the predetermined period, a difference of a maximum and a minimum torque value is formed, which is compared with a difference threshold and when exceeding the difference threshold the Tastpunktermittlungsrouti ne is aborted.
6. Verfahren nach mindestens einem der vorhergehenden Ansprüche, dadurch gekenn zeichnet, dass die Überwachung des Motormomentes durch ein Diagnosekommando erfolgt, welches von einer externen Prüfeinrichtung ausgegeben wird. 6. The method according to at least one of the preceding claims, characterized in that the monitoring of the engine torque is performed by a diagnostic command, which is output from an external test device.
7. Verfahren nach mindestens einem der vorhergehenden Ansprüche, dadurch gekenn zeichnet, dass Tastpunktermittlungsroutine bei einem in ein Getriebe eingelegten Gang und betätigter Bremse erfolgt, wobei ein Tastpunkt der Kupplung durch Ver schieben der Kupplung von einer Position„offen“ in Richtung einer Position„geschlos sen“ mittels Ansteuerung der Kupplung durch einen Kupplungsaktor durch ein überge ordnetes Steuergerät detektiert wird. 7. The method according to at least one of the preceding claims, characterized in that Tastpunktermittlungsroutine takes place in a gear engaged in a gear and operated brake, wherein a touch point of the clutch by Ver push the clutch from a position "open" in the direction of a position "closed sen "means of controlling the clutch by a clutch actuator is detected by a superordinate control unit.
8. Verfahren nach mindestens einem der vorhergehenden Ansprüche, dadurch gekenn zeichnet, dass die Kupplung in einem kupplungspedalfreien Kupplungssystem ver wendet wird, welches ein Handschaltgetriebe betätigt. 8. The method according to at least one of the preceding claims, characterized in that the clutch is ver used in a clutch pedal-free clutch system, which actuates a manual transmission.
PCT/DE2019/100311 2018-05-14 2019-04-05 Method for monitoring a quality of an engine torque of an internal combustion engine transmitted by a clutch during a biting point determination WO2019219114A1 (en)

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DE102018111412.5A DE102018111412A1 (en) 2018-05-14 2018-05-14 A method for monitoring a quality of an engine torque transmitted by a clutch of an internal combustion engine in a Tastpunktermittlung
DE102018111412.5 2018-05-14

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10351906A1 (en) 2002-11-11 2004-05-27 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Clutch engaging point method for adapting a clutch's point of engagement in an automatic gearbox presets measuring torque on the clutch as a clutch torque
DE102007031383A1 (en) * 2006-08-09 2008-02-14 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Method e.g. for determination of tactile point of automated actuated clutch, involves providing quality criteria of control unit with actuators of clutch automatically operated of vehicle during commissioning or re-commissioning
DE102011084833A1 (en) * 2010-11-18 2012-05-24 Schaeffler Technologies Gmbh & Co. Kg Determination of the cross-talk behavior of a dual-clutch system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10351906A1 (en) 2002-11-11 2004-05-27 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Clutch engaging point method for adapting a clutch's point of engagement in an automatic gearbox presets measuring torque on the clutch as a clutch torque
DE102007031383A1 (en) * 2006-08-09 2008-02-14 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Method e.g. for determination of tactile point of automated actuated clutch, involves providing quality criteria of control unit with actuators of clutch automatically operated of vehicle during commissioning or re-commissioning
DE102011084833A1 (en) * 2010-11-18 2012-05-24 Schaeffler Technologies Gmbh & Co. Kg Determination of the cross-talk behavior of a dual-clutch system

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