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1. WO2020089153 - HYDRAULIC SYSTEM FOR A VEHICLE TRANSMISSION

Publication Number WO/2020/089153
Publication Date 07.05.2020
International Application No. PCT/EP2019/079363
International Filing Date 28.10.2019
IPC
F16H 63/48 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
40comprising signals other than signals for actuating the final output mechanisms
48Signals to a parking brake
CPC
F16H 2061/126
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
1256characterised by the parts or units where malfunctioning was assumed or detected
126the failing part is the controller
F16H 63/483
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
63Control outputs ; from the control unit; to change-speed- or reversing-gearings for conveying rotary motion ; or to other devices than the final output mechanism
40comprising signals other than signals for actuating the final output mechanisms
48Signals to a parking brake ; or parking lock; Control of parking locks or brakes being part of the transmission
483Circuits for controlling engagement of parking locks or brakes
Applicants
  • PUNCH POWERTRAIN N.V. [BE]/[BE]
Inventors
  • VAN DRUTEN, Roell Marie
  • SMID, Peter Mark
Agents
  • WITMANS, H.A.
Priority Data
BE2018/575029.10.2018BE
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) HYDRAULIC SYSTEM FOR A VEHICLE TRANSMISSION
(FR) SYSTÈME HYDRAULIQUE POUR TRANSMISSION DE VÉHICULE
Abstract
(EN)
The invention relates to a hydraulic system for a vehicle transmission, comprising: a hydraulic circuit arranged for generating a pressure, a hydraulic actuator arranged for engaging a park lock system, wherein the hydraulic actuator is hydraulically connected to the hydraulic circuit for actuation of the hydraulic actuator using the pressure, and a back-up system configured to keep the pressure above a predetermined pressure threshold for maintaining an actuation of the hydraulic actuator for a predetermined period of time in case of an operational interruption of a transmission control unit of the vehicle.
(FR)
L'invention concerne un système hydraulique pour une transmission de véhicule comprenant : un circuit hydraulique agencé pour générer une pression, un actionneur hydraulique agencé pour venir en prise avec un système de verrouillage de stationnement, l'actionneur hydraulique étant relié hydrauliquement au circuit hydraulique pour l'actionnement de l'actionneur hydraulique à l'aide de la pression, et un système de secours configuré pour maintenir la pression au-dessus d'un seuil de pression prédéterminé afin de maintenir un actionnement de l'actionneur hydraulique pendant une période de temps prédéterminée en cas d'interruption opérationnelle d'une unité de commande de transmission du véhicule.
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