FR2238871A1 - Hydropneumatic self-levelling vehicle suspension - has variable connection between pressure chambers to give smooth operation - Google Patents

Hydropneumatic self-levelling vehicle suspension - has variable connection between pressure chambers to give smooth operation

Info

Publication number
FR2238871A1
FR2238871A1 FR7327410A FR7327410A FR2238871A1 FR 2238871 A1 FR2238871 A1 FR 2238871A1 FR 7327410 A FR7327410 A FR 7327410A FR 7327410 A FR7327410 A FR 7327410A FR 2238871 A1 FR2238871 A1 FR 2238871A1
Authority
FR
France
Prior art keywords
self
smooth operation
hydropneumatic
pressure chambers
vehicle suspension
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.)
Granted
Application number
FR7327410A
Other languages
French (fr)
Other versions
FR2238871B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ALLINQUANT FERNAND FR
Original Assignee
ALLINQUANT FERNAND FR
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ALLINQUANT FERNAND FR filed Critical ALLINQUANT FERNAND FR
Priority to FR7327410A priority Critical patent/FR2238871A1/en
Priority to FR7400688A priority patent/FR2323928A2/en
Priority to US439753A priority patent/US3904183A/en
Priority to DE2435590A priority patent/DE2435590C3/en
Priority to IT52246/74A priority patent/IT1016971B/en
Priority to GB3284474A priority patent/GB1469474A/en
Priority to ES428676A priority patent/ES428676A1/en
Publication of FR2238871A1 publication Critical patent/FR2238871A1/en
Application granted granted Critical
Publication of FR2238871B1 publication Critical patent/FR2238871B1/fr
Granted legal-status Critical Current

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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
    • F16F9/08—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid where gas is in a chamber with a flexible wall
    • F16F9/092—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid where gas is in a chamber with a flexible wall comprising a gas spring with a flexible wall provided between the tubes of a bitubular damper

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

The self-pumping, hydropneumatic strut has two chambers containing hydraulic fluid and gas. A pumping facility is formed between the sprung and unsprung parts of the damper to connect a first chamber to a suction valve and the second chamber to an outlet valve. A control piston monitors the relative displacement of both parts and controls the pump and/or venting action, with both chambers connected when the set level has been reached on the suspension. The connection is progressively established so that a smooth operation is obtained, especially when the suspension oscillates about its set point.
FR7327410A 1973-07-26 1973-07-26 Hydropneumatic self-levelling vehicle suspension - has variable connection between pressure chambers to give smooth operation Granted FR2238871A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FR7327410A FR2238871A1 (en) 1973-07-26 1973-07-26 Hydropneumatic self-levelling vehicle suspension - has variable connection between pressure chambers to give smooth operation
FR7400688A FR2323928A2 (en) 1973-07-26 1974-01-09 OLEOPNEUMATIC SHOCK ABSORBER
US439753A US3904183A (en) 1973-07-26 1974-02-05 Suspension strut
DE2435590A DE2435590C3 (en) 1973-07-26 1974-07-24 Self-pumping hydropneumatic suspension strut with internal level control for vehicles
IT52246/74A IT1016971B (en) 1973-07-26 1974-07-24 HYDROPNEUMATIC SUSPENSION DEVICE
GB3284474A GB1469474A (en) 1973-07-26 1974-07-25 Suspension struts
ES428676A ES428676A1 (en) 1973-07-26 1974-07-26 Suspension strut

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7327410A FR2238871A1 (en) 1973-07-26 1973-07-26 Hydropneumatic self-levelling vehicle suspension - has variable connection between pressure chambers to give smooth operation

Publications (2)

Publication Number Publication Date
FR2238871A1 true FR2238871A1 (en) 1975-02-21
FR2238871B1 FR2238871B1 (en) 1976-04-30

Family

ID=9123162

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7327410A Granted FR2238871A1 (en) 1973-07-26 1973-07-26 Hydropneumatic self-levelling vehicle suspension - has variable connection between pressure chambers to give smooth operation

Country Status (1)

Country Link
FR (1) FR2238871A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0436461A2 (en) * 1990-01-05 1991-07-10 AFAG A.G. für automatische Fertigungstechnik Hydraulic chock absorber for the industry

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0436461A2 (en) * 1990-01-05 1991-07-10 AFAG A.G. für automatische Fertigungstechnik Hydraulic chock absorber for the industry
EP0436461A3 (en) * 1990-01-05 1991-07-24 AFAG A.G. für automatische Fertigungstechnik Hydraulic chock absorber for the industry

Also Published As

Publication number Publication date
FR2238871B1 (en) 1976-04-30

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Legal Events

Date Code Title Description
TP Transmission of property
CD Change of name or company name
CN Change in juridical nature
ST Notification of lapse