DE10038738B4 - Device for controlling the switching element of an integrated in an axle of a motor vehicle differential lock - Google Patents
Device for controlling the switching element of an integrated in an axle of a motor vehicle differential lock Download PDFInfo
- Publication number
- DE10038738B4 DE10038738B4 DE2000138738 DE10038738A DE10038738B4 DE 10038738 B4 DE10038738 B4 DE 10038738B4 DE 2000138738 DE2000138738 DE 2000138738 DE 10038738 A DE10038738 A DE 10038738A DE 10038738 B4 DE10038738 B4 DE 10038738B4
- Authority
- DE
- Germany
- Prior art keywords
- switching element
- actuator
- axle
- differential lock
- motor 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.)
- Expired - Fee Related
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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
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H48/22—Arrangements for suppressing or influencing the differential action, e.g. locking devices using friction clutches or brakes
-
- 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
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H48/30—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means
-
- 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
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H48/30—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means
- F16H48/34—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means using electromagnetic or electric actuators
-
- 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
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H2048/204—Control of arrangements for suppressing differential actions
-
- 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
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H48/30—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means
- F16H48/34—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means using electromagnetic or electric actuators
- F16H2048/343—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means using electromagnetic or electric actuators using a rotary motor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Retarders (AREA)
Abstract
Vorrichtung zur Ansteuerung des Schaltelements einer in einer Achse eines Kraftfahrzeuges integrierten Differentialsperre, mit einem Aktuator, dem Steuersignale von einer Steuereinheit als Funktion der von Drehzahlsensoren ermittelten Rotationsgeschwindigkeiten der Räder des Kraftfahrzeuges zugeführt werden, dadurch gekennzeichnet, dass der Aktuator ein elektrohydrostatischer Aktuator ist, der einen Elektromotor (1), ein Getriebe, einen Hydraulikzylinder (3) und eine Hydraulikleitung (4) aufweist, die mit dem Schaltelement (5) in der Differentialsperre lösbar verbunden ist.Device for controlling the switching element of a differential lock integrated in an axle of a motor vehicle, with an actuator, to which control signals are fed from a control unit as a function of the rotational speeds of the motor vehicle wheels determined by speed sensors, characterized in that the actuator is an electrohydrostatic actuator, the one Has an electric motor (1), a transmission, a hydraulic cylinder (3) and a hydraulic line (4) which is releasably connected to the switching element (5) in the differential lock.
Description
Die vorliegende Erfindung betrifft eine Vorrichtung zur Ansteuerung des Schaltelementes einer in einer Achse eines Kraftfahrzeuges integrierten Differentialsperre mit einem Aktuator, dem Steuersignale von einer Steuereinheit als Funktion der von Drehzahlsensoren ermittelten Rotationsgeschwindigkeiten der Räder des Kraftfahrzeuges zugeführt werden.The present invention relates to a device for controlling the switching element of an integrated in an axle of a motor vehicle differential lock with an actuator, the control signals from a control unit as a function of the rotation speed of the wheels of the motor vehicle determined by speed sensors are supplied.
Differentialsperren mit einer externen Steuerung weisen üblicherweise Lamellenkupplungen auf, mit denen das offene Differential gesperrt werden kann. Durch geeignete Stellglieder kann das mit der Lamellenkupplung übertragene Sperrmoment auf beispielsweise hydraulischem Weg stufenlos verändert werden. Dies ist wichtig, um mit Hilfe einer üblicherweise elektronischen Regelung das Sperrmoment im Hinblick auf Traktion und Fahrstabilität möglichst gut an die unterschiedlichen Schlupf- bzw. Reibverhältnisse zwischen den Rädern und der Fahrbahn anzupassen. Mit Hilfe von Drehzahlsensoren an der angetriebenen und an der nicht angetriebenen Achse können die Schlupfverhältnisse der antreibenden Räder erkannt werden und durch Ansteuerung des Sperrdifferentials das Durchdrehen eines Rades verhindert werden.Differential locks with an external control usually have multi-plate clutches, with which the open differential can be locked. By suitable actuators transmitted with the multi-plate clutch locking torque can be changed continuously, for example, hydraulic way. This is important in order to adapt the blocking torque in terms of traction and driving stability as well as possible to the different slip or friction conditions between the wheels and the roadway with the aid of a conventionally electronic control system. With the help of speed sensors on the driven and on the non-driven axle, the slip conditions of the driving wheels can be detected and by controlling the locking differential, the wheel spin can be prevented.
So beschreibt beispielsweise die
Ein Beispiel eines Differentialgetriebes mit einer steuerbaren Sperrvorrichtung in Form von Lamellenkupplungen ist in der
Ein weiteres Beispiel eines Differentialgetriebes mit einer Sperrvorrichtung in Form einer Lamellenkupplung ist in der
Die
Dem ähnlich schlägt die
Die
Die
Aufgabe der vorliegenden Erfindung ist es, eine Vorrichtung zur Ansteuerung des Schaltelements einer in einer Achse eines Kraftfahrzeuges integrierten Differentialsperre zu schaffen, die es ermöglicht, den Bauraum im Differentialgetriebe zu verkleinern, die einen modularen Aufbau der Achse mit wenigen und einfachen Anschlußstellen zum Fahrzeug ermöglicht und die den Montageaufwand beim Fahrzeughersteller verringert.Object of the present invention is to provide a device for driving the switching element of an integrated differential lock in an axle of a motor vehicle, which makes it possible to reduce the space in the differential gear, which allows a modular construction of the axle with few and simple connection points to the vehicle and which reduces the assembly work for the vehicle manufacturer.
Ausgehend von einer Vorrichtung der eingangs näher genannten Art erfolgt die Lösung dieser Aufgabe mit den im Anspruch 1 angegebenen Merkmalen; vorteilhafte Ausgestaltungen sind in den Unteransprüchen beschrieben.Starting from a device of the type mentioned in more detail, the solution of this problem with the features specified in claim 1; advantageous embodiments are described in the subclaims.
Erfindungsgemäß wird also vorgeschlagen, dass der Aktuator, der außerhalb des Gehäuses der Differentialsperre angeordnet ist, ein elktrohydrostatischer Aktuator ist, der einen Elektromotor, ein Getriebe, einen Hydraulikzylinder und eine Hydraulikleitung aufweist, die mit dem Schaltelement in der Differentialsperre in lösbarer Weise verbunden ist.According to the invention, it is therefore proposed that the actuator, which is arranged outside the housing of the differential lock, is an electro-static actuator which has an electric motor, a transmission, a hydraulic cylinder and a hydraulic line, which is connected to the switching element in the differential lock in a detachable manner.
Das Getriebe ist vorteilhafterweise in den Elektromotor integriert und über ein mechanisches Stellelement, beispielsweise eine Zahnstange mit dem Hyraulikzylinder verbunden.The transmission is advantageously integrated in the electric motor and connected via a mechanical actuator, such as a rack with the hydraulic cylinder.
Durch die externe Anordnung des Aktuators zur Ansteuerung des vorzugsweise als Lamellenkupplung ausgebildeten Schaltelements wird eine nicht unwesentliche Verringerung des Bauraumbedarfs für das Differentialgetriebe ermöglicht. Zugleich wird der Vorteil eines modularen Aufbaus der Achse erzielt, die nur noch wenige und einfache Anschlußstellen zum Fahrzeug aufweist. Auch die Anforderungen der Fahrzeughersteller nach Drive-by-wire, d. h. dass die Module oder Fahrzeugkomponenten nur noch über wenige elektrische bzw. hydraulische Leitungen mit dem Fahrzeug verbunden werden, wird durch die erfindungsgemäße Vorrichtung erfüllt. Dadurch wird auch der Montageaufwand beim Fahrzeughersteller verringert.Due to the external arrangement of the actuator for controlling the preferably designed as a multi-plate clutch switching element a not insignificant reduction in the space requirement for the differential gear is possible. At the same time the advantage of a modular construction of the axle is achieved, which has only a few and simple connection points to the vehicle. Also the requirements of the vehicle manufacturers for drive-by-wire, d. H. The fact that the modules or vehicle components are only connected to the vehicle via a few electrical or hydraulic lines is fulfilled by the device according to the invention. As a result, the assembly effort is reduced at the vehicle manufacturer.
Im folgenden wird die Erfindung anhand der Zeichnung näher erläutert, wobei in der einzigen Figur eine schematische Darstellung der erfindungsgemäßen Vorrichtung gezeigt ist.In the following the invention will be explained in more detail with reference to the drawing, wherein in the single figure, a schematic representation of the device according to the invention is shown.
Die erfindungsgemäße Vorrichtung weist als Kraftquelle einen Elektromotor
Diese elektro-hydrostatische Ansteuerung des Schaltelements
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Elektromotorelectric motor
- 22
- Stellelementactuator
- 33
- Hydraulikzylinderhydraulic cylinders
- 44
- Hydraulikleitunghydraulic line
- 55
- Schaltelementswitching element
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000138738 DE10038738B4 (en) | 2000-08-09 | 2000-08-09 | Device for controlling the switching element of an integrated in an axle of a motor vehicle differential lock |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000138738 DE10038738B4 (en) | 2000-08-09 | 2000-08-09 | Device for controlling the switching element of an integrated in an axle of a motor vehicle differential lock |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10038738A1 DE10038738A1 (en) | 2002-02-21 |
DE10038738B4 true DE10038738B4 (en) | 2012-03-29 |
Family
ID=7651763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2000138738 Expired - Fee Related DE10038738B4 (en) | 2000-08-09 | 2000-08-09 | Device for controlling the switching element of an integrated in an axle of a motor vehicle differential lock |
Country Status (1)
Country | Link |
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DE (1) | DE10038738B4 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005015483A1 (en) * | 2005-04-05 | 2006-10-12 | Daimlerchrysler Ag | Interconnecting feeder line for power unit of motor vehicle, comprises of fluid lines and conductors wrapped in plastic coating and embedded in a section of feeder line |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3524615A1 (en) * | 1985-07-10 | 1987-01-15 | Bosch Gmbh Robert | Hydraulic unit for the operation of a differential lock for a motor vehicle |
DE3625141A1 (en) * | 1986-07-25 | 1988-02-04 | Man Nutzfahrzeuge Gmbh | DRIVING DEVICE FOR A VEHICLE WITH EMERGENCY DEVICE UNIT |
DE3640082A1 (en) * | 1986-11-24 | 1988-06-01 | Liebherr Aera Technik Gmbh | ELECTROHYDROSTATIC ACTUATOR |
DE3813305A1 (en) * | 1987-04-20 | 1988-11-10 | Tochigi Fuji Sangyo Kk | POWER TRANSMISSION DEVICE |
DE3837862A1 (en) * | 1988-11-08 | 1990-05-10 | Uni Cardan Ag | METHOD AND DEVICE FOR CONTROLLING LOCKING DIFFERENTIALS |
DE69012403T2 (en) * | 1989-04-28 | 1995-02-16 | Parker Hannifin Corp | Electro-hydraulic actuator. |
DE19709523C1 (en) * | 1997-03-10 | 1998-04-09 | Gkn Viscodrive Gmbh | Lockable differential gear-train |
-
2000
- 2000-08-09 DE DE2000138738 patent/DE10038738B4/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3524615A1 (en) * | 1985-07-10 | 1987-01-15 | Bosch Gmbh Robert | Hydraulic unit for the operation of a differential lock for a motor vehicle |
DE3625141A1 (en) * | 1986-07-25 | 1988-02-04 | Man Nutzfahrzeuge Gmbh | DRIVING DEVICE FOR A VEHICLE WITH EMERGENCY DEVICE UNIT |
DE3640082A1 (en) * | 1986-11-24 | 1988-06-01 | Liebherr Aera Technik Gmbh | ELECTROHYDROSTATIC ACTUATOR |
DE3813305A1 (en) * | 1987-04-20 | 1988-11-10 | Tochigi Fuji Sangyo Kk | POWER TRANSMISSION DEVICE |
DE3837862A1 (en) * | 1988-11-08 | 1990-05-10 | Uni Cardan Ag | METHOD AND DEVICE FOR CONTROLLING LOCKING DIFFERENTIALS |
DE69012403T2 (en) * | 1989-04-28 | 1995-02-16 | Parker Hannifin Corp | Electro-hydraulic actuator. |
DE19709523C1 (en) * | 1997-03-10 | 1998-04-09 | Gkn Viscodrive Gmbh | Lockable differential gear-train |
Also Published As
Publication number | Publication date |
---|---|
DE10038738A1 (en) | 2002-02-21 |
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8110 | Request for examination paragraph 44 | ||
R016 | Response to examination communication | ||
R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final |
Effective date: 20120630 |
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |