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1. WO1997037158 - HYDRAULIC CONTROL FOR OPERATING AN AUTOMATIC GEARBOX, ESPECIALLY A CONTINUOUSLY VARIABLE TRANSMISSION

Publication Number WO/1997/037158
Publication Date 09.10.1997
International Application No. PCT/EP1997/001430
International Filing Date 21.03.1997
Chapter 2 Demand Filed 18.08.1997
IPC
F16H 9/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
9Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
F16H 59/06 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
59Control inputs to change-speed- or reversing-gearings for conveying rotary motion
02Selector apparatus
04Ratio selector apparatus
06the ratio being infinitely variable
F16H 61/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
61Control functions within change-speed- or reversing-gearings for conveying rotary motion
F16H 61/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
61Control functions within change-speed- or reversing-gearings for conveying rotary motion
02characterised by the signals used
F16H 61/06 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
61Control functions within change-speed- or reversing-gearings for conveying rotary motion
04Smoothing ratio shift
06by controlling rate of change of fluid pressure
F16H 63/06 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
63Control outputs to change-speed- or reversing-gearings for conveying rotary motion
02Final output mechanisms therefor; Actuating means for the final output mechanisms
04a single final output mechanism being moved by a single final actuating mechanism
06the final output mechanism having an indefinite number of positions
CPC
F16H 61/0246
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
61Control 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
02characterised by the signals used
0202the signals being electric
0204for gearshift control, e.g. control functions for performing shifting or generation of shift signal
0246characterised by initiating reverse gearshift
F16H 61/0267
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
61Control 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
02characterised by the signals used
0262the signals being hydraulic
0265for gearshift control, e.g. control functions for performing shifting or generation of shift signals
0267Layout of hydraulic control circuits, e.g. arrangement of valves
F16H 61/065
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
61Control 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
04Smoothing ratio shift
06by controlling rate of change of fluid pressure
065using fluid control means
F16H 61/067
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
61Control 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
04Smoothing ratio shift
06by controlling rate of change of fluid pressure
065using fluid control means
067using an accumulator
F16H 61/12
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
61Control 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
12Detecting malfunction or potential malfunction, e.g. fail safe
F16H 61/66
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
61Control 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
66specially adapted for continuously variable gearings
Applicants
  • ZF FRIEDRICHSHAFEN AG [DE]/[DE] (AllExceptUS)
  • KÖNIG, Hubert [DE]/[DE] (UsOnly)
  • STOLL, Hans, Peter [DE]/[DE] (UsOnly)
Inventors
  • KÖNIG, Hubert
  • STOLL, Hans, Peter
Common Representative
  • ZF FRIEDRICHSHAFEN AG
Priority Data
196 12 864.130.03.1996DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) HYDRAULISCHE STEUERVORRICHTUNG ZUM SCHALTEN EINES AUTOMATIKGETRIEBES, INSBESONDERE EINES CVT-GETRIEBES
(EN) HYDRAULIC CONTROL FOR OPERATING AN AUTOMATIC GEARBOX, ESPECIALLY A CONTINUOUSLY VARIABLE TRANSMISSION
(FR) DISPOSITIF DE COMMANDE HYDRAULIQUE POUR LA MANOEUVRE D'UNE TRANSMISSION AUTOMATIQUE, EN PARTICULIER D'UNE TRANSMISSION VARIABLE EN CONTINU
Abstract
(DE)
Eine hydraulische Steuervorrichtung zum Schalten eines Automatikgetriebes, insbesondere eines CVT-Getriebes, weist wenigstens ein erstes und ein zweites Schaltelement (1, 2) zur Vorwärts- bzw. Rückwärtsfahrt von einer Neutralstellung (N) in eine Vorwärts- (D) oder Rückwärtsfahrtstellung (R) und umgekehrt sowie ein Hydrauliksystem mit Druckleitungen auf. Die Schaltelemente (1, 2) sind dabei mit Druck über Druckleitungen (24, 25) mit einem Wählschieber (15) und mit einer zwischen dem Wählschieber (15) und dem Schaltelement (1, 2) angeordneten Schalteinrichtung (26), welche jeweils ein Schaltventil (27, 28) und ein Dämpferschalt- und Entlüftungsventil (29, 30) für ein Schaltelement (1, 2) aufweist, betätigbar. Die Schalteinrichtung (26) weist eine Sicherheits- und Entlüftungseinrichtung auf, welche derart ausgebildet ist, daß bei Betätigung eines der Schaltelemente (1, 2) das (die) andere(n) Schaltelement(e) automatisch abgeschaltet ist (sind).
(EN)
A hydraulic control for operating an automatic gearbox, especially a continuously variable transmission, has at least one first and one second switching component (1, 2) for forward or reverse travel from a neutral position (N) to a drive (D) or reverse (R) position and vice versa and a hydraulic system with pressure lines. Here, the switching components (1, 2) can be actuated by pressure via pressure lines (24, 25) by means of a switching device (26) between the selector slide (15) and the switching component (1, 2) which has a switching valve (27, 28) and a damper, switching component (1, 2) which has a switching valve (27, 28) and a damper, switching and air discharge device (29, 30) for a switching component (1, 2). The switching device (26) has a safety and air discharge device constructed in such a way that, when one of the switching components (1, 2) is actuated, the other component(s) is/are automatically disengaged.
(FR)
Dispositif de commande hydraulique pour la manoeuvre d'une transmission automatique, en particulier d'une transmission variable en continu, présentant au moins un premier et un second éléments de changement de vitesse (1, 2) pour la marche avant, respectivement, arrière, à partir d'un point neutre (N) vers une position 'marche' avant (D) ou 'marche' arrière (R) et inversement, ainsi qu'un système hydraulique doté de conduites de fluides sous pression. Les éléments de changement de vitesse (1, 2) sont actionnables par pression, via des conduites de fluide sous pression (24, 25), au moyen d'un dispositif de commutation (26) monté entre un tiroir de sélection (15) et l'élément de changement de vitesse (1, 2), présentant respectivement une soupape de commande (27, 28) et une soupape d'amortissement de commutation et d'évacuation (29, 30) pour un élément de changement de vitesse (1, 2). Le dispositif de commutation (26) présente un dispositif de sécurité et d'évacuation et est réalisé de telle façon que lors de l'actionnement de l'un des éléments de changement de vitesse (1, 2), le/ou les autres éléments de changement de vitesse est/ou sont automatiquement désenclenchés.
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