DE102008038716A1 - Automotive gear selection detector assembly has inclination sensor and drive train moment sensor - Google Patents
Automotive gear selection detector assembly has inclination sensor and drive train moment sensor Download PDFInfo
- Publication number
- DE102008038716A1 DE102008038716A1 DE102008038716A DE102008038716A DE102008038716A1 DE 102008038716 A1 DE102008038716 A1 DE 102008038716A1 DE 102008038716 A DE102008038716 A DE 102008038716A DE 102008038716 A DE102008038716 A DE 102008038716A DE 102008038716 A1 DE102008038716 A1 DE 102008038716A1
- Authority
- DE
- Germany
- Prior art keywords
- gear
- sensor
- engaged
- acceleration
- vehicle
- 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.)
- Withdrawn
Links
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
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
- F16H63/42—Ratio indicator devices
-
- 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
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/68—Inputs being a function of gearing status
- F16H59/70—Inputs being a function of gearing status dependent on the ratio established
-
- 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
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/68—Inputs being a function of gearing status
- F16H59/70—Inputs being a function of gearing status dependent on the ratio established
- F16H2059/706—Monitoring gear ratio in stepped transmissions, e.g. by calculating the ratio from input and output speed
-
- 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
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/14—Inputs being a function of torque or torque demand
- F16H59/16—Dynamometric measurement of torque
-
- 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
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/48—Inputs being a function of acceleration
-
- 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
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/60—Inputs being a function of ambient conditions
- F16H59/66—Road conditions, e.g. slope, slippery
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft eine Gangerkennungseinrichtung zum Erkennen eines eingelegten Gangs in einem Getriebe eines Kraftfahrzeugs. Die Erfindung betrifft außerdem ein Verfahren zum Erkennen eines eingelegten Gangs in einem Getriebe eines Kraftfahrzeugs.The The present invention relates to a gear detection device for Recognizing an engaged gear in a transmission of a motor vehicle. The invention also relates to a method for detecting an engaged gear in a transmission of a motor vehicle.
Um eine Kupplung eines Getriebes in einem Kraftfahrzeug vor einer Überlastung und damit einem vorzeitigen Verschleiß möglichst zuverlässig schützen zu können, weisen viele Kraftfahrzeuge heutzutage eine so genannte Gangerkennungssensorik auf, welche in der Lage ist, die eingelegten Gänge zu erkennen und bei entsprechend falsch eingelegtem Gang ein Signal abzusetzen. Fehlt diese Gangerkennungssensorik jedoch, kann es insbesondere beim Anfahren des Kraftfahrzeugs dazu kommen, dass ein falscher Gang eingelegt ist und dadurch einerseits der Anfahrvorgang holprig ist und andererseits die Kupplung langfristig Schaden nimmt.Around a clutch of a transmission in a motor vehicle from an overload and thus a premature wear as possible to be able to protect reliably Many motor vehicles today, a so-called gear detection sensors which is able to recognize the inlaid passages and set a signal if the gear is incorrectly engaged. However, if this gear recognition sensor is missing, it can be When starting the motor vehicle come to a wrong Gang is engaged and thus on the one hand, the starting bumpy and on the other hand, the coupling takes long term damage.
Aus
der
Die vorliegende Erfindung beschäftigt sich mit dem Problem, eine Gangerkennungseinrichtung zum Erkennen eines eingelegten Gangs in einem Getriebe eines Kraftfahrzeugs zu schaffen, welche ohne spezielle Gangerkennungssensorik auskommt.The The present invention addresses the problem of a gear detection device for detecting an engaged gear to create in a transmission of a motor vehicle, which without special Gangerkennungssensorik manages.
Dieses Problem wird erfindungsgemäß durch die Gegenstände der unabhängigen Ansprüche gelöst. Eine vorteilhafte Ausführungsform ist Gegenstand des abhängigen Anspruchs.This Problem is inventively by the objects of the independent claims. A advantageous embodiment is the subject of the dependent Claim.
Die Erfindung beruht auf dem allgemeinen Gedanken, eine Gangerkennungseinrichtung zum Erkennen eines eingelegten Gangs in einem Getriebe eines Kraftfahrzeugs mit einer Auswerteeinrichtung zu versehen, welche aus mehreren unabhängig voneinander detektierbaren Messwerten erkennt bzw. ermittelt, welcher Gang gerade eingelegt ist. Hierzu weist die Gangerkennungseinrichtung einen Neigungssensor auf, der einen Längsneigungswinkel des Kraftfahrzeugs erfasst, einen Beschleunigungssensor, der eine Anfahrbeschleunigung des Kraftfahrzeugs detektiert, zumindest einen Momentensensor, der ein Antriebsmoment an einer Antriebseinrichtung detektiert, sowie einen Nulllagensensor, der ausschließlich zur Unterscheidung eines eingelegten geraden von einem eingelegten ungeraden Gang ausgebildet ist. Ein derartiger Nulllagensensor wird üblicherweise in Kraftfahrzeugen mit so genannter Start-Stopp-Funktion eingebaut und besitzt dort die Aufgabe zu erkennen, ob im Getriebe ein Gang eingelegt ist. Diese Information ist insbesondere in den beschriebenen Kraftfahrzeugen mit Start-Stopp-Funktion wichtig, um die Entscheidung für einen Start des Motors treffen zu können. Dabei ist der Sensor vorzugsweise als ein Wegsensor ausgeführt, der die Verschiebung einer Schaltstange in Schaltrichtung misst und anhand der gemessenen Verschiebung erkennt, ob ein gerader oder ein ungerader Gang eingelegt ist. Mit der Information des Nulllagensensors sowie einer Koeffizientenbildung aus einem Kupplungsmoment und einer Längsbeschleunigung, lässt sich eine zuverlässige und äußerst genaue Gangaussage tätigen, wodurch eine thermische Berechnung für eine Kupplungsschutzfunktion auch ohne physikalische Gangerkennung zuverlässig möglich ist. Insbesondere können dabei Fehler in der thermischen Berechnung nahezu vollständig ausgeschlossen werden, da dass thermische Modell der Schutzfunktion bei der erfindungsgemäßen Gangerkennungseinrichtung ähnlich einer vollwertigen Gangerkennung arbeiten kann. Durch die Eliminierung möglicher Fehlerquellen in der thermischen Berechnung, kann deren Aussagekraft deutlich erhöht und damit die Schutzfunktion für die Kupplung auf eine besonders solide und zuverlässige Basis gestellt werden. Die Auswerteeinrichtung verwendet dabei ein berechnetes bzw. gemessenes Kupplungsmoment, die gemäß einer Längsbeschleunigung und die vom Nulllagensensor übermittelte Ganginformation bezüglich eines eingelegten geraden oder ungeraden Gangs zur Ermittlung einer möglichen Getriebeübersetzung, welche dann eindeutig einem bestimmten Gang zugeordnet werden kann.The The invention is based on the general idea of a gear recognition device for detecting an engaged gear in a transmission of a motor vehicle to be provided with an evaluation, which consists of several independently detectable measured values detects or determines which gear currently is inserted. For this purpose, the gear recognition device has a tilt sensor on, which detects a pitch angle of the motor vehicle, an acceleration sensor, which is a starting acceleration of the motor vehicle detects, at least one moment sensor having a drive torque detected at a drive device, and a zero position sensor, exclusively for the distinction of an inserted straight line is formed by an inserted odd gear. Such a Zero position sensor is commonly used in motor vehicles built-in so-called start-stop function and has there the task to recognize whether a gear is engaged in the transmission. This information is particularly in the described motor vehicles with start-stop function important to the decision for a start of the engine to meet. In this case, the sensor is preferably as a displacement sensor that performs the displacement of a shift rod measures in the switching direction and recognizes it from the measured displacement, whether a straight or an odd gear is engaged. With the information of the zero position sensor and a coefficient formation from a Clutch torque and a longitudinal acceleration leaves yourself a reliable and extremely accurate Make a gear statement, which makes a thermal calculation for a coupling protection function even without physical Gear recognition is reliably possible. Especially In doing so, errors in the thermal calculation can almost be be completely excluded because that thermal model of Protective function in the gear recognition device according to the invention similar a full-fledged gear recognition can work. By the elimination possible sources of error in the thermal calculation, their meaningfulness can be significantly increased and thus the protective function for the clutch on a particularly solid and reliable Be made basic. The evaluation uses a calculated or measured clutch torque, according to a Longitudinal acceleration and the transmitted from the zero position sensor Gear information with respect to an inserted straight or odd gear to determine a possible gear ratio, which can then be clearly assigned to a specific gear.
Bei einer vorteilhaften Weiterbildung der erfindungsgemäßen Lösung, ist die Gangerkennungseinrichtung derart ausgebildet, dass sie noch in der Schlupfphase, also bei noch nicht vollständig geschlossener Kupplung erkennen kann, welcher Gang eingelegt ist. Da insbesondere bei vollständig geschlossener Kupplung und gleichzeitig falsch eingelegtem Gang eine Beschädigung der Kupplung nicht ausgeschlossen werden kann, ist es wichtig, dass die Gangerkennungseinrichtung bereits in der Schlupfphase ermitteln kann, welcher Gang eingelegt ist. Hierdurch kann bereits vor einer eintretenden Beschädigung der Kupplung ein Schließen derselben verhindert oder bspw. ein entsprechendes Warnsignal abgegeben werden.at an advantageous embodiment of the invention Solution, the gear recognition device is designed such that they are still in the hatching phase, so at not yet complete closed clutch can detect which gear is engaged. Especially when the clutch is fully closed and at the same time incorrectly engaged gear damage The coupling can not be excluded, it is important that determine the gear detection device already in the slip phase can, which gear is engaged. This can already be done before closing damage to the clutch closing prevents the same or, for example, issued a corresponding warning signal become.
Weitere wichtige Merkmale und Vorteile der Erfindung ergeben sich aus den Unteransprüchen, aus den Zeichnungen und aus der zugehörigen Figurenbeschreibung anhand der Zeichnungen.Further important features and advantages of the invention will become apparent from the Subclaims, from the drawings and from the associated Description of the figures with reference to the drawings.
Es versteht sich, dass die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.It is understood that the features mentioned above and those yet to be explained not only in the particular Kom but also in other combinations or alone, without departing from the scope of the present invention.
Bevorzugte Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden in der nachfolgenden Beschreibung näher erläutert, wobei sich gleiche Bezugszeichen auf gleiche oder ähnliche oder funktional gleiche Bauteile beziehen.preferred Embodiments of the invention are in the drawings and will become more apparent in the following description explained, wherein the same reference numerals to the same or similar or functionally identical components relate.
Es zeigen, jeweils schematisch,It show, in each case schematically,
Entsprechend
der
Die
Gangerkennungseinrichtung
Generell
ist dabei die Gangerkennungseinrichtung
Gemäß den
Gemäß der
nachfolgenden Formel kann so ein Übersetzungsverhältnis
iGetriebe berechnet werden, anhand welchem
mittels der in den
- MKupplung,
- = Moment an der Kupplung (Nm)
- MMotor
- = Motormoment (Nm)
- Jm
- = Motor Massenträgheitsmoment (kgm2)
- αm
- = Motorwinkelbeschleunigung (rad/s2)
- al
- = Längsbeschleunigung (m/s2)
- MFhg
- = Fahrzeugmasse (ca. 1.700–2.500 kg)
- i
- = Übersetzung
- RRad
- = Radradius (ca. 0,25–0,3 m)
- η
- = Wirkungsgrad am Antriebsstrangs (ca. 85–100%)
- M clutch,
- = Torque on the clutch (Nm)
- M engine
- = Engine torque (Nm)
- J m
- = Motor mass moment of inertia (kgm 2 )
- α m
- = Motor angular acceleration (rad / s 2 )
- a l
- = Longitudinal acceleration (m / s 2 )
- M Fhg
- = Vehicle mass (about 1,700-2,500 kg)
- i
- = Translation
- R wheel
- = Wheel radius (about 0.25-0.3 m)
- η
- = Powertrain efficiency (about 85-100%)
Betrachtet
man nun die
Mittels
der erfindungsgemäßen Gangerkennungseinrichtung
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 102005042971 A1 [0003] DE 102005042971 A1 [0003]
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008038716A DE102008038716A1 (en) | 2008-08-12 | 2008-08-12 | Automotive gear selection detector assembly has inclination sensor and drive train moment sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008038716A DE102008038716A1 (en) | 2008-08-12 | 2008-08-12 | Automotive gear selection detector assembly has inclination sensor and drive train moment sensor |
Publications (1)
Publication Number | Publication Date |
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DE102008038716A1 true DE102008038716A1 (en) | 2009-05-07 |
Family
ID=40514543
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102008038716A Withdrawn DE102008038716A1 (en) | 2008-08-12 | 2008-08-12 | Automotive gear selection detector assembly has inclination sensor and drive train moment sensor |
Country Status (1)
Country | Link |
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DE (1) | DE102008038716A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012209806A1 (en) * | 2012-06-12 | 2013-12-12 | Zf Friedrichshafen Ag | Device for e.g. controlling transmission of motor car, has data interface interchanging data between transmission and device, where position of shift elements of transmission is determined from measurement signal of acceleration sensor |
DE102016209196A1 (en) * | 2016-05-27 | 2017-11-30 | Schaeffler Technologies AG & Co. KG | Method for detecting a gear in a manual transmission in vehicles with a friction clutch |
DE102021103043A1 (en) | 2021-02-10 | 2022-08-11 | Bayerische Motoren Werke Aktiengesellschaft | Gear shifting device, manual transmission with a gear shifting device and motor vehicle |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005042971A1 (en) | 2004-10-02 | 2006-04-06 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Time interval determining method for activated creep function of automatic transmission, involves determining time interval based on moment and given maximum clutch temperature, and visually displaying determined time interval to driver |
-
2008
- 2008-08-12 DE DE102008038716A patent/DE102008038716A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005042971A1 (en) | 2004-10-02 | 2006-04-06 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Time interval determining method for activated creep function of automatic transmission, involves determining time interval based on moment and given maximum clutch temperature, and visually displaying determined time interval to driver |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012209806A1 (en) * | 2012-06-12 | 2013-12-12 | Zf Friedrichshafen Ag | Device for e.g. controlling transmission of motor car, has data interface interchanging data between transmission and device, where position of shift elements of transmission is determined from measurement signal of acceleration sensor |
DE102016209196A1 (en) * | 2016-05-27 | 2017-11-30 | Schaeffler Technologies AG & Co. KG | Method for detecting a gear in a manual transmission in vehicles with a friction clutch |
WO2017202417A1 (en) * | 2016-05-27 | 2017-11-30 | Schaeffler Technologies AG & Co. KG | Method for detecting the gear in a manual shift transmission in motor vehicles having a friction clutch |
DE102016209196B4 (en) * | 2016-05-27 | 2018-02-08 | Schaeffler Technologies AG & Co. KG | Method for detecting a gear in a manual transmission in vehicles with a friction clutch |
DE102021103043A1 (en) | 2021-02-10 | 2022-08-11 | Bayerische Motoren Werke Aktiengesellschaft | Gear shifting device, manual transmission with a gear shifting device and motor vehicle |
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OAV | Applicant agreed to the publication of the unexamined application as to paragraph 31 lit. 2 z1 | ||
R005 | Application deemed withdrawn due to failure to request examination |