DE4322523A1 - Control device for a motor vehicle automatic transmission - Google Patents
Control device for a motor vehicle automatic transmissionInfo
- Publication number
- DE4322523A1 DE4322523A1 DE19934322523 DE4322523A DE4322523A1 DE 4322523 A1 DE4322523 A1 DE 4322523A1 DE 19934322523 DE19934322523 DE 19934322523 DE 4322523 A DE4322523 A DE 4322523A DE 4322523 A1 DE4322523 A1 DE 4322523A1
- Authority
- DE
- Germany
- Prior art keywords
- control device
- electro
- parking lock
- hydraulic control
- operating
- 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- Withdrawn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
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/3483—Parking lock mechanisms or brakes in the transmission with hydraulic actuating means
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- 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
- F16H59/02—Selector apparatus
- F16H59/08—Range selector apparatus
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- 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
- F16H63/48—Signals to a parking brake or parking lock; Control of parking locks or brakes being part of the transmission
- F16H63/483—Circuits for controlling engagement of parking locks or brakes
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- 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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0251—Elements specially adapted for electric control units, e.g. valves for converting electrical signals to fluid signals
- F16H2061/026—On-off solenoid valve
Abstract
Description
Die Erfindung betrifft eine elektro-hydraulische Steuer einrichtung für ein Kraftfahrzeug-Automatikgetriebe nach dem Oberbegriff des Hauptanspruchs.The invention relates to an electro-hydraulic control device for a motor vehicle automatic transmission after the preamble of the main claim.
Es ist bekannt, daß der Fahrer eines Kraftfahrzeugs mit Automatikgetriebe über einen Wählhebel verschiedene Be triebsstufen, z. B. Vorwärtsfahrt, Rückwärtsfahrt, Neutral- oder Parkstellung, vorwählen kann. Im Automatik getriebe werden, je nach eingelegter Betriebsstufe, aus Stellzylindern, Kupplungen und Bremsen bestehende Schalt glieder über eine hydraulische Steuerung betätigt. Dazu ist der Wählhebel entweder mechanisch oder elektrisch über Magnetventile so mit hydraulischen Schaltventilen zusammengeschaltet, daß die Schaltglieder einzelne Ge triebeelemente entsprechend blockieren oder freigeben.It is known that the driver of a motor vehicle with Automatic transmission via a selector lever various loading drive stages, e.g. B. forward drive, reverse drive, Neutral or park position. In automatic gearboxes are switched off, depending on the selected operating level Actuating cylinders, clutches and brakes existing switching operated by a hydraulic control. To the selector lever is either mechanical or electrical via solenoid valves so with hydraulic switching valves interconnected that the switching elements individual Ge Block or release the drive elements accordingly.
Die DE-OS 41 27 991 beschreibt eine Parksperre für ein Automatikgetriebe, die über eine solche hydraulische Steuereinrichtung betätigt wird. Da das Einlegen der Parksperre auch bei Defekten in der Steuerung gewährlei stet sein muß, wird diese durch Federkraft mechanisch eingelegt, wenn der Wählhebel vom Fahrer in die Stellung P gebracht wird. In den anderen Stellungen des Wählhebels wird die Parksperre durch hydraulischen Druck außer Ein griff gehalten.DE-OS 41 27 991 describes a parking lock for a Automatic transmission that has such a hydraulic Control device is operated. Since inserting the Ensure parking lock even in the event of defects in the control system must be constant, this becomes mechanical by spring force engaged when the driver selects the selector lever in position P brought. In the other positions of the selector lever the parking lock is deactivated by hydraulic pressure held.
Über die Steuerung des Automatikgetriebes in den anderen Stellungen des Wählhebels ist in dieser Veröffentlichung nichts offenbart.Via the control of the automatic transmission in the others Positions of the selector lever is in this publication nothing revealed.
Deshalb ist es Aufgabe der Erfindung, eine elektro hydraulische Steuereinrichtung für ein Kraftfahrzeug-Au tomatikgetriebe so auszubilden, daß sie in allen Be triebsstufen zuverlässig arbeitet.Therefore, it is an object of the invention, an electro hydraulic control device for a motor vehicle Au to train the tomato transmission so that it can be used in all drive stages works reliably.
Die Aufgabe wird erfindungsgemäß mit den kennzeichnenden Merkmalen des Anspruchs 1 gelöst. Weitere Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.The object is achieved with the characteristic Features of claim 1 solved. Other configurations the invention emerge from the subclaims.
Nach der Erfindung ist die elektro-hydraulische Steuer einrichtung für ein Automatikgetriebe so gestaltet, daß die Betriebsstufen D, R und N durch Druckbeaufschlagung einzelner Schaltglieder eingelegt werden, während die Be triebsstufe P durch Drucklosschaltung aller Schaltglieder eingelegt wird. Das hat den Vorteil, daß durch die hydraulische Steuereinrichtung nicht nur in der Betriebs stufe P, sondern in allen Betriebsstufen des Wählhebels bei Druckausfall die Parksperre eingelegt wird.According to the invention, the electro-hydraulic control device for an automatic transmission designed so that operating levels D, R and N by pressurization individual switching elements are inserted while the loading gear stage P by depressurizing all switching elements is inserted. This has the advantage that the hydraulic control device not only in operation level P, but in all operating levels of the selector lever the parking lock is inserted in the event of pressure loss.
In einer vorteilhaften Ausführung der Erfindung werden durch die Wähleinrichtung drei 2/2-Wege-Ventile angesteu ert. Zusätzlich ist die Steuerung so ausgebildet, daß bei der Umschaltung zwischen den Betriebsstufen D, R und N jeweils zwei Magnetventile geschaltet werden.In an advantageous embodiment of the invention controlled by the selection device three 2/2-way valves ert. In addition, the control is designed so that at switching between operating levels D, R and N two solenoid valves can be switched.
Bei einer bevorzugten Ausführung der Erfindung sind Wähl einrichtung und Parksperre durch eine zweite Steuerein richtung so gekoppelt, daß das Einrücken der Parksperre verhindert wird, wenn an der Wähleinrichtung nicht die Betriebsstufe P eingelegt ist.In a preferred embodiment of the invention, dialing is facility and parking lock by a second control unit direction coupled so that the engagement of the parking lock is prevented if the dialing device does not have the Operating level P is inserted.
So kann vorteilhafterweise während der Vorwärtsfahrt keine Kraftschlußunterbrechung und grundsätzlich kein un gewolltes Einlegen der Parksperre stattfinden.So can advantageously during the forward drive no interruption of adhesion and basically no un deliberate insertion of the parking lock take place.
Die zweite Steuereinrichtung zwischen Parksperre und Wähleinrichtung wird konstruktiv einfach und preiswert dadurch verwirklicht, daß sie in einer weiteren vorteil haften Ausführung der Erfindung aus einer Wirkverbindung, z. B. einem Bowdenzug, besteht.The second control device between the parking lock and The selection device is structurally simple and inexpensive realized by having another advantage liable implementation of the invention from an active connection, e.g. B. a Bowden cable.
Um das Fahrzeug bei Funktionsausfall der Steuereinrich tung und eingelegter Parksperre abschleppen zu können, ist in einer weiteren bevorzugten Ausführung der Er findung vorgesehen, daß die Parksperre durch eine vom Fahrer bedienbare Notentriegelung außer Eingriff gebracht werden kann.To control the vehicle in the event of a malfunction towing and inserted parking lock, is the Er in a further preferred embodiment invention provided that the parking lock by one of Driver-operated emergency release disengaged can be.
Eine wiederum konstruktiv einfache und preiswerte Ausfüh rung der Notentriegelung ist eine Wirkverbindung, z. B. ein Bowdenzug, zwischen einem vom Fahrer bedienbaren Handhebel und der Parksperre.This, in turn, is structurally simple and inexpensive tion of the emergency release is an active connection, z. B. a Bowden cable between one that can be operated by the driver Hand lever and the parking lock.
Ein bevorzugtes Ausführungsbeispiel der Erfindung be schreibt die nachfolgende Beschreibung mit der zugehöri gen Zeichnung. Es zeigt:A preferred embodiment of the invention be write the following description with the corresponding drawing. It shows:
Fig. 1 den Schaltplan der elektro-hydraulischen Steuereinrichtung gemäß der Erfindung, Fig. 1 shows the circuit diagram of the electro-hydraulic control device according to the invention,
Fig. 2 eine Schaltmatrix für den Schaltplan aus Fig. 1 und Fig. 2 is a switching matrix for the circuit diagram of Fig. 1 and
Fig. 3 eine Prinzipdarstellung des automatischen Ge triebes mit den Verbindungen zu Wähleinrichtung und Notentriegelung. Fig. 3 is a schematic diagram of the automatic gearbox with the connections to the selector and emergency release.
Nach Fig. 1 werden über eine elektro-hydraulische Steuer einrichtung eine Parksperre 1 und Schaltglieder für Rück wärtsfahrt 2 und Vorwärtsfahrt 3, die in der Zeichnung nur symbolisch dargestellt sind, mit hydraulischem Druck beaufschlagt. Der Schaltkreis enthält ein Schaltventil 4 für die Parksperre 1, ein Schaltventil 5 für das Schalt glied für Rückwärtsfahrt 2 und ein Schaltventil 6 für das Schaltglied für Vorwärtsfahrt 3. Gesteuert wird der Schaltkreis durch drei Magnetventile: Ein Magnetventil 7 für die Parksperre 1, ein Magnetventil 8 für das Schalt glied für Rückwärtsfahrt 2 und ein Magnetventil 9 für das Schaltglied für Vorwärtsfahrt 3. Bei den Magnetventilen 7, 8, 9 handelt es sich um 2/2-Wege-Ventile, die ein gangsseitig mit Drucköl von einer nicht gezeichneten Pumpe versorgt werden. Diese nicht gezeichnete Pumpe ver sorgt auch einen Hauptdruckölanschluß 10 des Schalt kreises.According to FIG. 1, a parking lock 1 and switching elements for reverse travel 2 and forward travel 3 , which are shown only symbolically in the drawing, are acted upon by hydraulic pressure via an electro-hydraulic control device. The circuit contains a switching valve 4 for the parking lock 1 , a switching valve 5 for the switching element for reverse travel 2 and a switching valve 6 for the switching element for forward driving 3rd The circuit is controlled by three solenoid valves: a solenoid valve 7 for the parking lock 1 , a solenoid valve 8 for the switching element for reverse travel 2 and a solenoid valve 9 for the switching element for forward movement 3 . The solenoid valves 7 , 8 , 9 are 2/2-way valves that are supplied with pressure oil from a pump (not shown) on the inlet side. This pump, not shown, also provides a main pressure oil connection 10 of the switching circuit.
Neben den bereits erwähnten Elementen des Schaltkreises enthält dieser noch ein Doppelrückschlagventil 11, das zwischen die Ausgangsleitungen der Magnetventile 7, 8 für die Parksperre und für Rückwärtsfahrt geschaltet ist. Der Ausgang des Doppelrückschlagventils 11 mit zwei Ein gängen, das selbsttätig den jeweils entlüfteten Eingang sperrt, wirkt einseitig auf den Kolben des Schaltventils 6 für das Schaltglied 3 für Vorwärtsfahrt.In addition to the elements of the circuit already mentioned, it also contains a double check valve 11 , which is connected between the output lines of the solenoid valves 7 , 8 for the parking lock and for reverse travel. The output of the double check valve 11 with two inputs, which automatically blocks the vented input, acts on one side on the piston of the switching valve 6 for the switching element 3 for forward travel.
Fig. 2 zeigt die Schaltmatrix des Schaltplans von Fig. 1. Bei eingelegter Parksperre, dem Schaltzustand, der auch in Fig. 1 dargestellt ist, sperren alle drei Magnetven tile 7, 8, 9. Der Pumpendruck liegt nur an dem Haupt druckölanschluß 10 an. Durch die Stellung der Schaltven tile 4, 5, 6 sind alle Ausgänge des Schaltkreises ent lüftet und die Zuleitungen zu den Schaltgliedern drucklos geschaltet. Dies betrifft die Schaltglieder für Rück wärtsfahrt 2 bzw. Vorwärtsfahrt 3 und die Zuleitung 13 zum Stellzylinder 12 der Parksperre 1. Diese Schalt stellung ist in der ersten Zeile der Schaltmatrix der Fig. 2 dargestellt. Wird von der Betriebsstufe P auf die Betriebsstufe N umgeschaltet, schaltet das Magnetventil 7 für die Parksperre 1, wie in der zweiten Zeile der Schaltmatrix dargestellt, auf Durchlaß. Dadurch bewegt sich der Kolben des Schaltventils 4 für die Parksperre 1 in seine andere Endlage und die Zuleitung 13 für den Stellzylinder 12 der Parksperre 1 wird vom Pumpendruck des Hauptdruckölanschlusses 10 beaufschlagt. Der Kolben des Stellzylinders 12 verschiebt sich gegen den Druck der Feder 14 und entriegelt die Parksperre 1. Die Schalt glieder für Rückwärtsfahrt 2 und Vorwärtsfahrt 3 sind drucklos. Fig. 2 shows the switching matrix of the circuit diagram of Fig. 1. With the parking lock engaged, the switching state, which is also shown in Fig. 1, all three magnetic valves 7 , 8 , 9 lock. The pump pressure is only at the main pressure oil connection 10 . Due to the position of the Schaltven tile 4 , 5 , 6 , all outputs of the circuit are vented and the supply lines to the switching elements are depressurized. This applies to the switching elements for reverse travel 2 or forward travel 3 and the supply line 13 to the actuating cylinder 12 of the parking lock 1 . This switching position is shown in the first line of the switching matrix of FIG. 2. If the operating mode P is switched to operating mode N, the solenoid valve 7 for the parking lock 1 switches to passage, as shown in the second line of the switching matrix. As a result, the piston of the switching valve 4 for the parking lock 1 moves into its other end position and the supply line 13 for the actuating cylinder 12 of the parking lock 1 is acted upon by the pump pressure of the main pressure oil connection 10 . The piston of the actuating cylinder 12 moves against the pressure of the spring 14 and unlocks the parking lock 1 . The switching elements for reverse travel 2 and forward travel 3 are depressurized.
Wie die Zeilen 3 und 4 der Fig. 2 zeigen, wird beim Um schalten auf die Betriebsstufen für Rückwärts- bzw. Vor wärtsfahrt (R, D) das jeweilige Magnetventil 8, 9 auf Durchlaß geschaltet. Dadurch wird wiederum das betref fende Schaltglied 2, 3 über die entsprechenden Schaltven tile 5, 6 betätigt.As lines 3 and 4 of FIG. 2 show, the respective solenoid valve 8 , 9 is switched to passage when switching to the operating stages for reverse or forward travel (R, D). As a result, the switching element 2 , 3 in question is actuated via the corresponding switching valves 5 , 6 .
Fig. 3 zeigt eine zweite Steuereinrichtung zwischen Wähl einrichtung 15, die hier als Wählhebel ausgebildet ist, und der Parksperre. Von der Parksperre ist nur der außen am Getriebegehäuse 16 angebrachte Hebel 17 zur Not entriegelung sichtbar, dessen mechanische Koppelung mit der Parksperre 1 in Fig. 1 dargestellt ist. Eine Blockiereinrichtung 18 für den Hebel 17 verhindert in allen Stellungen der Wähleinrichtung 15, außer der für die Betriebsstufe P, eine Schwenkbewegung des Hebels 17 zum Einlegen der Parksperre. Wird die Wähleinrichtung 15 auf die Betriebsstufe P verdreht, schwenkt die Blockier einrichtung 18 aufgrund einer Bowdenzug-Verbindung 20 zur Wähleinrichtung 15 aus dem Bewegungsbereich des Hebels 17 heraus. Die Parksperre 1 wird durch die Kraft der Feder 14 (siehe Fig. 1) eingelegt. Fig. 3 shows a second control device between the selection device 15 , which is designed here as a selector lever, and the parking lock. From the parking lock, only the lever 17 attached to the outside of the transmission housing 16 for emergency unlocking is visible, the mechanical coupling of which to the parking lock 1 is shown in FIG. 1. A blocking device 18 for the lever 17 prevents a pivoting movement of the lever 17 for engaging the parking lock in all positions of the selector device 15 , except for that for the operating stage P. If the selector 15 is rotated to the operating level P, the blocking device 18 pivots due to a Bowden cable connection 20 to the selector 15 out of the range of movement of the lever 17 . The parking lock 1 is inserted by the force of the spring 14 (see Fig. 1).
Zur Notentriegelung der Parksperre ist ein zweiter Bowdenzug 21 vorgesehen, der den Hebel 17 mit einem vom Fahrer bedienbaren Handgriff 22 verbindet. Wird dieser betätigt, schwenkt der Hebel 17 und entriegelt dabei die Parksperre. Jetzt wird durch die Kraft der Feder 19 die Blockiereinrichtung 18 wieder in Eingriffsstellung mit dem Hebel 17 gebracht, und die Wähleinrichtung 15 aus der Betriebsstufe P zurückgestellt.For emergency unlocking of the parking lock, a second Bowden cable 21 is provided, which connects the lever 17 to a handle 22 that can be operated by the driver. If this is actuated, the lever 17 pivots and unlocks the parking lock. Now, the blocking device 18 is brought back into engagement position with the lever 17 by the force of the spring 19 , and the selector device 15 is reset from the operating stage P.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE19934322523 DE4322523A1 (en) | 1993-07-06 | 1993-07-06 | Control device for a motor vehicle automatic transmission |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE19934322523 DE4322523A1 (en) | 1993-07-06 | 1993-07-06 | Control device for a motor vehicle automatic transmission |
Publications (1)
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DE4322523A1 true DE4322523A1 (en) | 1995-01-12 |
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Family Applications (1)
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DE19934322523 Withdrawn DE4322523A1 (en) | 1993-07-06 | 1993-07-06 | Control device for a motor vehicle automatic transmission |
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Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0814287A2 (en) * | 1996-06-22 | 1997-12-29 | Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 | Part-lock mechanism for motor vehicle with an automatic transmission |
DE19643812A1 (en) * | 1996-10-30 | 1998-05-07 | Zahnradfabrik Friedrichshafen | Parking lock for automatic gear |
DE19800880A1 (en) * | 1998-01-13 | 1999-04-29 | Bosch Gmbh Robert | Gearshift with park setting |
DE19850374A1 (en) * | 1998-11-02 | 2000-05-04 | Bayerische Motoren Werke Ag | Motor vehicle with selector for automatic selection gearbox has blocking element that prevents deployment of parking lock if neutral operating setting selected using selection lever |
DE19858543A1 (en) * | 1998-12-18 | 2000-06-21 | Zahnradfabrik Friedrichshafen | Electro-hydraulic control device of car's auto gearbox has by manual unlocking of park lock device, control valve hydraulically controlled and thereby forwards gear applied. |
DE19858540A1 (en) * | 1998-12-18 | 2000-06-29 | Zahnradfabrik Friedrichshafen | Electronic-hydraulic control device for motor vehicle automatic gearbox acts via electrical interaction to drive control unit that drives couplings and brakes via electrically actuated valves |
DE19950696A1 (en) * | 1999-10-21 | 2001-04-26 | Volkswagen Ag | Double clutch gearbox esp. for motor vehicle with 1st gearbox input shaft having low gear and connecting with 1st clutch with 2nd gearbox input shaft connected with 2nd clutch having travel gear also common gearbox driven shaft |
WO2001075336A1 (en) | 2000-03-30 | 2001-10-11 | Zf Friedrichshafen Ag | Parking brake system for a gearbox of a motor vehicle |
WO2002010619A1 (en) * | 2000-08-02 | 2002-02-07 | Zf Friedrichshafen Ag | Parking brake, especially for an automotive gearbox |
EP1199233A2 (en) * | 2000-10-19 | 2002-04-24 | Deere & Company | Control device for a park-lock mechanism for motor vehicle |
WO2004031623A1 (en) * | 2002-09-28 | 2004-04-15 | Daimlerchrysler Ag | Parking brake actuator and driving position selector for an automatic transmission of a motor vehicle |
DE10128430B4 (en) * | 2001-06-12 | 2006-09-28 | Zf Friedrichshafen Ag | Parking brake system |
DE102006012343A1 (en) * | 2006-03-17 | 2007-09-20 | Zf Friedrichshafen Ag | Parking brake for a motor vehicle with an automatic transmission comprises a damping device formed as a brake acting on a parking brake wheel and actuated using a hydraulic brake cylinder arrangement |
DE102007006354B4 (en) * | 2006-02-13 | 2009-09-10 | GM Global Technology Operations, Inc., Detroit | Parking lock assembly for an electric transmission range selection system |
DE102004025596B4 (en) * | 2003-06-03 | 2011-01-05 | General Motors Corp., Detroit | Hydraulic servo arrangement for an internal electronic system for selection of transmission ranges (ETRS) |
DE102009035348A1 (en) | 2009-07-30 | 2011-02-03 | Volkswagen Ag | Parking lock device for automatic or automated motor vehicle transmission, has slide valve provided between relief valve and hydraulic cylinder in pressure pipe and servo-controlled by shift valve |
DE102009028340A1 (en) | 2009-08-07 | 2011-02-10 | Zf Friedrichshafen Ag | Device for emergency release of a parking brake of an automatic transmission of a motor vehicle |
DE102004025595B4 (en) * | 2003-06-03 | 2011-06-09 | General Motors Corp. (N.D.Ges.D. Staates Delaware), Detroit | Park Solenoid Assembly for an Internal Electronic System for Selection of Transmission Areas (ETRS) |
DE10212038B4 (en) * | 2002-03-19 | 2011-06-16 | Zf Friedrichshafen Ag | parking lock |
US8157076B2 (en) | 2008-04-04 | 2012-04-17 | GM Global Technology Operations LLC | Hydraulic control for a park by wire system used in a multimode hybrid transmission |
DE102010043257A1 (en) * | 2010-11-03 | 2012-05-03 | Zf Friedrichshafen Ag | Device for operating parking brake device, has piston-cylinder-device formed as double acting piston-cylinder-device, where piston of piston-cylinder-device is impinged with operating pressure |
WO2013017202A1 (en) * | 2011-08-04 | 2013-02-07 | Daimler Ag | Hydraulic controller for an automatic transmission of a motor vehicle |
US8636130B2 (en) | 2006-08-25 | 2014-01-28 | Zf Friedrichshafen Ag | Parking brake device for motor vehicle transmissions |
DE102014214870A1 (en) | 2014-07-29 | 2016-02-04 | Zf Friedrichshafen Ag | Emergency unlocking of a parking lock |
US20190003589A1 (en) * | 2017-06-29 | 2019-01-03 | Zf Friedrichshafen Ag | Actuation Arrangement |
DE102020214576A1 (en) | 2020-11-19 | 2022-05-19 | Zf Friedrichshafen Ag | Device and method for operating a parking lock of a motor vehicle transmission |
DE102020214577A1 (en) | 2020-11-19 | 2022-05-19 | Zf Friedrichshafen Ag | Device and method for operating a parking lock of a motor vehicle transmission |
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DE19625019A1 (en) * | 1996-06-22 | 1998-01-02 | Bayerische Motoren Werke Ag | Motor vehicle with an automatic transmission |
EP0814287A3 (en) * | 1996-06-22 | 1998-07-01 | Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 | Part-lock mechanism for motor vehicle with an automatic transmission |
US5919112A (en) * | 1996-06-22 | 1999-07-06 | Bayerische Motoren Werke Aktiengesellschaft | Motor vehicle having an automatically shifted transmission |
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US6675668B2 (en) | 1999-10-21 | 2004-01-13 | Volkswagen Ag | Double clutch transmission and method for controlling an automated double clutch transmission |
US6872165B2 (en) | 2000-03-30 | 2005-03-29 | Zf Freidrichshafen Ag | Parking brake system for a gearbox of a motor vehicle |
WO2001075336A1 (en) | 2000-03-30 | 2001-10-11 | Zf Friedrichshafen Ag | Parking brake system for a gearbox of a motor vehicle |
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US6823976B2 (en) | 2000-08-02 | 2004-11-30 | Zf Friedrichshafen Ag | Parking brake, especially for an automotive gearbox |
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DE10128430B4 (en) * | 2001-06-12 | 2006-09-28 | Zf Friedrichshafen Ag | Parking brake system |
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DE102004025596B4 (en) * | 2003-06-03 | 2011-01-05 | General Motors Corp., Detroit | Hydraulic servo arrangement for an internal electronic system for selection of transmission ranges (ETRS) |
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DE102007006354B4 (en) * | 2006-02-13 | 2009-09-10 | GM Global Technology Operations, Inc., Detroit | Parking lock assembly for an electric transmission range selection system |
DE102006012343A1 (en) * | 2006-03-17 | 2007-09-20 | Zf Friedrichshafen Ag | Parking brake for a motor vehicle with an automatic transmission comprises a damping device formed as a brake acting on a parking brake wheel and actuated using a hydraulic brake cylinder arrangement |
US8636130B2 (en) | 2006-08-25 | 2014-01-28 | Zf Friedrichshafen Ag | Parking brake device for motor vehicle transmissions |
US8157076B2 (en) | 2008-04-04 | 2012-04-17 | GM Global Technology Operations LLC | Hydraulic control for a park by wire system used in a multimode hybrid transmission |
DE102009035348A1 (en) | 2009-07-30 | 2011-02-03 | Volkswagen Ag | Parking lock device for automatic or automated motor vehicle transmission, has slide valve provided between relief valve and hydraulic cylinder in pressure pipe and servo-controlled by shift valve |
DE102009028340A1 (en) | 2009-08-07 | 2011-02-10 | Zf Friedrichshafen Ag | Device for emergency release of a parking brake of an automatic transmission of a motor vehicle |
US8770057B2 (en) | 2009-08-07 | 2014-07-08 | Zf Friedrichshafen Ag | Device for emergency release of an automotive parking interlock |
DE102010043257A1 (en) * | 2010-11-03 | 2012-05-03 | Zf Friedrichshafen Ag | Device for operating parking brake device, has piston-cylinder-device formed as double acting piston-cylinder-device, where piston of piston-cylinder-device is impinged with operating pressure |
WO2013017202A1 (en) * | 2011-08-04 | 2013-02-07 | Daimler Ag | Hydraulic controller for an automatic transmission of a motor vehicle |
DE102014214870A1 (en) | 2014-07-29 | 2016-02-04 | Zf Friedrichshafen Ag | Emergency unlocking of a parking lock |
US20190003589A1 (en) * | 2017-06-29 | 2019-01-03 | Zf Friedrichshafen Ag | Actuation Arrangement |
US10788126B2 (en) * | 2017-06-29 | 2020-09-29 | Zf Friedrichshafen Ag | Actuation arrangement |
DE102020214576A1 (en) | 2020-11-19 | 2022-05-19 | Zf Friedrichshafen Ag | Device and method for operating a parking lock of a motor vehicle transmission |
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