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1. WO2020001962 - VEHICLE WHEEL SUSPENSION HAVING AN ADJUSTMENT SYSTEM FOR THE BASE OF A STRUCTURE SUPPORT SPRING

Publication Number WO/2020/001962
Publication Date 02.01.2020
International Application No. PCT/EP2019/065036
International Filing Date 07.06.2019
IPC
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
G
VEHICLE SUSPENSION ARRANGEMENTS
11
Resilient suspensions characterised by arrangement, location, or kind of springs
14
having helical, spiral, or coil springs only
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
G
VEHICLE SUSPENSION ARRANGEMENTS
15
Resilient suspensions characterised by arrangement, location, or type of combined spring and vibration- damper, e.g. telescopic type
02
having mechanical spring
06
and fluid damper
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
G
VEHICLE SUSPENSION ARRANGEMENTS
17
Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
02
Spring characteristics
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
G
VEHICLE SUSPENSION ARRANGEMENTS
17
Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
02
Spring characteristics
04
Fluid-spring characteristics
044
Self-pumping fluid springs
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F
SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
9
Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
06
using both gas and liquid
B60G 11/14 (2006.01)
B60G 15/06 (2006.01)
B60G 17/02 (2006.01)
B60G 17/044 (2006.01)
F16F 9/06 (2006.01)
CPC
B60G 11/14
B60G 15/06
B60G 15/062
B60G 17/021
B60G 17/044
B60G 2202/12
Applicants
  • BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT [DE/DE]; Petuelring 130 80809 München, DE
Inventors
  • SCHMIDT, Roland; DE
  • VOS, Serge; DE
Priority Data
10 2018 210 403.426.06.2018DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) FAHRZEUG-RADAUFHÄNGUNG MIT EINEM VERSTELLSYSTEM FÜR DEN FUßPUNKT EINER AUFBAU-TRAGFEDER
(EN) VEHICLE WHEEL SUSPENSION HAVING AN ADJUSTMENT SYSTEM FOR THE BASE OF A STRUCTURE SUPPORT SPRING
(FR) SUSPENSION DE ROUE DE VÉHICULE AVEC UN SYSTÈME DE POSITIONNEMENT POUR LE PIED D'UN RESSORT PORTEUR DE CARROSSERIE
Abstract
(DE)
Die Erfindung betrifft ein Fahrzeug-Radaufhängung mit einem hydraulischen Verstellsystem für den Fußpunkt einer zwischen einem Radführungs-Bauteil und dem Fahrzeug-Aufbau vorgesehenen Tragfeder, mit einer über eine Relativbewegung des Fahrzeug-Aufbaus gegenüber einem radführenden Bauelement angetriebenen Kolbenpumpe zur Förderung von Hydraulikmedium durch ein Rückschlagventil in eine am Federfußpunkt vorgesehene Hydraulikkammer, sowie mit einem druckbeaufschlagten Ausgleichsvolumen zur Bereitstellung von Hydraulikmedium. Vorzugsweise weist die Kolbenpumpe einen Pumpenzylinder und einen diesem gegenüber verlagerbar geführten Pumpkolben auf und es mündet ein mit der Hydraulikkammer verbundener Rücklaufkanal solchermaßen im Pumpenzylinder, dass dessen Mündungsöffnung vom Pumpkolben positionsabhängig abgesperrt oder freigegeben ist, wobei durch die freigegebene Mündungsöffnung Hydraulikmedium aus der Hydraulikkammer durch den Pumpenzylinder in das Ausgleichsvolumen strömen kann.
(EN)
The invention relates to a vehicle wheel suspension comprising a hydraulic adjustment system for the base of a support spring provided between a wheel-guide component and the vehicle structure, comprising a piston pump which is driven via a relative movement of the vehicle structure in relation to a wheel-guiding component and intended for conveying hydraulic medium through a return valve into a hydraulic chamber provided at the spring base, as well as comprising a pressurised compensation volume for providing hydraulic medium. Preferably, the piston pump has a pump cylinder and a pump piston guided such that it can move relative to the former and a return channel connected to the hydraulic chamber feeds into the pump cylinder in such a way that the feed opening is blocked or released by the pump piston in a position-dependent manner, wherein hydraulic medium can flow via the released feed opening, out of the hydraulic chamber, through the pump cylinder and into the compensation volume.
(FR)
L'invention concerne une suspension de roue de véhicule comprenant un système de positionnement hydraulique pour le pied d'un ressort porteur disposé entre un élément structural de guidage de roue et la carrosserie du véhicule, comprenant une pompe à piston entraînée par le biais d'un mouvement relatif de la carrosserie du véhicule par rapport à un élément structural de guidage de roue destinée à refouler un fluide hydraulique à travers un clapet anti-retour dans une chambre hydraulique se trouvant au niveau du pied de ressort, et comprenant aussi un volume de compensation sous pression destiné à fournir du fluide hydraulique. La pompe à piston possède de préférence un cylindre de pompe et un piston de pompe guidé de manière positionnable par rapport à celui-ci, et un canal de retour relié à la chambre hydraulique débouche dans le cylindre de pompe de telle sorte que son ouverture de débouché est fermée ou libérée par le piston de pompe en fonction de la position. Du fluide hydraulique peut s'écouler à travers l'ouverture de débouché libérée hors de la chambre hydraulique dans le volume de compensation en passant par le cylindre de pompe.
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