FR2422521A1 - Adjustable hydropneumatic vehicle suspension - has gas and liq. chambers separated by diaphragm and variable liquid pressure source giving constant ride height - Google Patents

Adjustable hydropneumatic vehicle suspension - has gas and liq. chambers separated by diaphragm and variable liquid pressure source giving constant ride height

Info

Publication number
FR2422521A1
FR2422521A1 FR7909316A FR7909316A FR2422521A1 FR 2422521 A1 FR2422521 A1 FR 2422521A1 FR 7909316 A FR7909316 A FR 7909316A FR 7909316 A FR7909316 A FR 7909316A FR 2422521 A1 FR2422521 A1 FR 2422521A1
Authority
FR
France
Prior art keywords
diaphragm
gas
ride height
vehicle suspension
liq
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.)
Pending
Application number
FR7909316A
Other languages
French (fr)
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.)
Girling Ltd
Original Assignee
Girling Ltd
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 Girling Ltd filed Critical Girling Ltd
Publication of FR2422521A1 publication Critical patent/FR2422521A1/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—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
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/08—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having fluid spring
    • B60G15/12—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having fluid spring and fluid damper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/15—Fluid spring
    • B60G2202/154—Fluid spring with an accumulator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/40—Constructional features of dampers and/or springs
    • B60G2206/42—Springs
    • B60G2206/422—Accumulators for hydropneumatic springs
    • B60G2206/4222—Accumulators for hydropneumatic springs with a flexible separating wall; Membrane construction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/20—Spring action or springs
    • B60G2500/206—Variable pressure accumulators for hydropneumatic suspensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/20—Spring action or springs
    • B60G2500/206—Variable pressure accumulators for hydropneumatic suspensions
    • B60G2500/2062—Variable pressure accumulators for hydropneumatic suspensions by varying the air-pressure of the accumulator

Landscapes

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

Abstract

The hydro-pneumatic vehicle suspension unit comprises a gas pressure chamber (7) and working liquid chamber (9) which are separated by a first diaphragm (10). Oppositely acting one-way valves or restrictors (4) damp the liquid flow. The liquid chamber (9) is bounded by a second diaphragm (11) exposed to liquid at a variable pressure to compensate for pressure changes in gas chamber (7) caused by vehicle loading. The vehicle ride height can thus be held constant automatically by suitable control of applied pressure. The second diaphragm (11) may be located between a rolling diaphragm (13) and the first diaphragm (10), liquid being supplied at variable pressure between the diaphragms (13, 11).
FR7909316A 1978-04-14 1979-04-12 Adjustable hydropneumatic vehicle suspension - has gas and liq. chambers separated by diaphragm and variable liquid pressure source giving constant ride height Pending FR2422521A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1469978 1978-04-14

Publications (1)

Publication Number Publication Date
FR2422521A1 true FR2422521A1 (en) 1979-11-09

Family

ID=10045983

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7909316A Pending FR2422521A1 (en) 1978-04-14 1979-04-12 Adjustable hydropneumatic vehicle suspension - has gas and liq. chambers separated by diaphragm and variable liquid pressure source giving constant ride height

Country Status (4)

Country Link
JP (1) JPS54138225A (en)
DE (1) DE2915133A1 (en)
FR (1) FR2422521A1 (en)
HU (1) HU177630B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001046602A1 (en) * 1999-12-21 2001-06-28 Daimlerchrysler Ag Spring-shock absorbing system with tubular rolled bellows
GB2554457A (en) * 2016-09-29 2018-04-04 Horstman Defence Systems Ltd A suspension unit

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3174727D1 (en) * 1980-11-25 1986-07-03 Bayerische Motoren Werke Ag Suspension system for vehicles
JPS5981605U (en) * 1982-11-26 1984-06-01 厚木自動車部品株式会社 vehicle height adjustment device
DE4300669C1 (en) * 1993-01-13 1994-08-18 Continental Ag Pneumatic spring with elastomeric pneumatic-spring bellows and an additional volume

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2620182A (en) * 1947-10-15 1952-12-02 Marston Fluid actuated suspension device for vehicles, aircraft, and the like
FR1225665A (en) * 1958-11-15 1960-07-04 Kleber Colombes Adjustable air suspension for motor vehicles
FR1232510A (en) * 1959-04-24 1960-10-10 Improvements to pneumatic suspensions
US3033552A (en) * 1958-12-24 1962-05-08 Ralph P Ogden Hydro-pneumatic spring unit
US3046003A (en) * 1959-07-16 1962-07-24 Midland Ross Corp Fluid spring
FR1483928A (en) * 1966-04-27 1967-06-09 Saviem Improvements to oleopneumatic suspensions
FR1539357A (en) * 1966-09-30 1968-09-13 Daimler Benz Ag Hydropneumatic spring for vehicles
FR2063733A5 (en) * 1969-10-29 1971-07-09 Bourcier De Carbon Chris
FR2077992A5 (en) * 1970-01-30 1971-11-05 Moulton Development Ltd
FR2187565A1 (en) * 1972-06-12 1974-01-18 Monroe Belgium Nv

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2620182A (en) * 1947-10-15 1952-12-02 Marston Fluid actuated suspension device for vehicles, aircraft, and the like
FR1225665A (en) * 1958-11-15 1960-07-04 Kleber Colombes Adjustable air suspension for motor vehicles
US3033552A (en) * 1958-12-24 1962-05-08 Ralph P Ogden Hydro-pneumatic spring unit
FR1232510A (en) * 1959-04-24 1960-10-10 Improvements to pneumatic suspensions
US3046003A (en) * 1959-07-16 1962-07-24 Midland Ross Corp Fluid spring
FR1483928A (en) * 1966-04-27 1967-06-09 Saviem Improvements to oleopneumatic suspensions
FR1539357A (en) * 1966-09-30 1968-09-13 Daimler Benz Ag Hydropneumatic spring for vehicles
FR2063733A5 (en) * 1969-10-29 1971-07-09 Bourcier De Carbon Chris
FR2077992A5 (en) * 1970-01-30 1971-11-05 Moulton Development Ltd
FR2187565A1 (en) * 1972-06-12 1974-01-18 Monroe Belgium Nv

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001046602A1 (en) * 1999-12-21 2001-06-28 Daimlerchrysler Ag Spring-shock absorbing system with tubular rolled bellows
US6974003B1 (en) 1999-12-21 2005-12-13 Daimlerchrysler Ag Spring-shock absorbing system with tubular rolled bellows
GB2554457A (en) * 2016-09-29 2018-04-04 Horstman Defence Systems Ltd A suspension unit
GB2554457B (en) * 2016-09-29 2021-12-15 Horstman Defence Systems Ltd A suspension unit

Also Published As

Publication number Publication date
JPS54138225A (en) 1979-10-26
HU177630B (en) 1981-11-28
DE2915133A1 (en) 1979-10-25

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