GB816786A - Improvements in or relating to pneumatic-hydraulic spring means - Google Patents

Improvements in or relating to pneumatic-hydraulic spring means

Info

Publication number
GB816786A
GB816786A GB3068457A GB3068457A GB816786A GB 816786 A GB816786 A GB 816786A GB 3068457 A GB3068457 A GB 3068457A GB 3068457 A GB3068457 A GB 3068457A GB 816786 A GB816786 A GB 816786A
Authority
GB
United Kingdom
Prior art keywords
valve
chamber
piston
pipe
oil
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.)
Expired
Application number
GB3068457A
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.)
TRW Fahrwerksysteme GmbH and Co KG
Original Assignee
TRW Fahrwerksysteme GmbH and Co KG
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 TRW Fahrwerksysteme GmbH and Co KG filed Critical TRW Fahrwerksysteme GmbH and Co KG
Publication of GB816786A publication Critical patent/GB816786A/en
Expired 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
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
    • B60G11/30—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs having pressure fluid accumulator therefor, e.g. accumulator arranged in vehicle frame

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

816,786. Road vehicle spring suspensions; hydropneumatic springs. EHRENREICH & CIE, A. Oct. 1, 1957 [Oct. 12, 1956], No. 30684/57. Classes 108(2) and 108(3) In a hydro-pneumatic spring unit comprising a cylinder and a piston, one of which is connected with the underframe and the other with the wheel of a vehicle, one face of the piston acting through a column of liquid on a volume of gas which is compressed in a chamber of variable capacity and which acts on one end of the cylinder, the other face of the piston determines the volume of a chamber at the other end of the cylinder in such a way that the piston and this latter end of the cylinder co-operate to form a pump for the displacement of a hydraulic liquid in a pipe system which is in communication with the column of liquid, the unit being thus selflevelling. When the vehicle is stationary, pistons 9, 10 enclose a volume of oil which is determined by the setting of valve 24 which also determines the ground clearance b of the vehicle. Under load, gas cushion 11 is compressed and its volume reduced simultaneously, valve 24 opens to permit oil to flow from accumulator 19, which contains compressed gas in space 29, through channels 18, 25, 15 into chamber 12 until the original ground clearance is re-established, when valve 4 closes again. Wheel deflections of short duration do not cause changes in ground clearance to be made since valve 24 is not open long enough. If the rise and fall of the wheel is slow there will be transfer of oil from accumulator 19 to chamber 12 and back again. Reciprocations of piston 10 draw oil from sump 21 into chamber 13 through pipe 16 via non-return valve 20 and force it back through pipe 16, non-return valve 17 and pipe 18 to accumulator 19. Pipe 7 takes hydraulic fluid to other accessories requiring hydraulic power. Initial inflation takes place through valve 14. Adjustable non-return valve 22, preferably dashboard mounted, provides a means of adjusting the damping characteristics of the system by varying the oil pressure in the accumulator.
GB3068457A 1956-10-12 1957-10-01 Improvements in or relating to pneumatic-hydraulic spring means Expired GB816786A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE13077A DE1089282B (en) 1956-10-12 1956-10-12 Hydraulic-pneumatic spring device for vehicles

Publications (1)

Publication Number Publication Date
GB816786A true GB816786A (en) 1959-07-22

Family

ID=7068483

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3068457A Expired GB816786A (en) 1956-10-12 1957-10-01 Improvements in or relating to pneumatic-hydraulic spring means

Country Status (3)

Country Link
DE (1) DE1089282B (en)
FR (1) FR1184182A (en)
GB (1) GB816786A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1275366B (en) * 1962-12-08 1968-08-14 Boge Gmbh Self-pumping, hydropneumatic suspension strut with pressure medium connection for external consumers for the suspension of vehicles
DK116700A (en) * 1963-07-12
DE1276468B (en) * 1963-11-12 1968-08-29 Zd Y V I Pilsen Narodni Podnik Hydropneumatic telescopic springs for vehicles
DE1266651B (en) * 1966-02-17 1968-04-18 Fichtel & Sachs Ag Hydropneumatic suspension strut with level control
US3847410A (en) * 1972-06-12 1974-11-12 Monroe Belgium Nv Leveling system
FR2436030A1 (en) * 1978-09-12 1980-04-11 Leduc & Fils Rene Hydropneumatic suspension for vehicle - has multiple accumulators, all but one with pressure isolating valve acting at different pressures
DE3130830A1 (en) * 1981-08-04 1983-02-24 WOCO Franz-Josef Wolf & Co, 6483 Bad Soden-Salmünster SPRING ELEMENT AND ITS USE
DE3618654C2 (en) * 1986-06-03 1995-09-28 Fichtel & Sachs Ag Hydraulic vibration damper for vehicles
DE102015119732A1 (en) * 2015-11-16 2017-05-18 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Damper assembly and strut for a motor vehicle

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9216C (en) * C. G. NORRENBERG in Köln, Mechtildesstr. 20 Innovations in apparatus for moving ships, called "wrapping wheels"
DE525039C (en) * 1928-09-22 1931-05-20 George Louis Rene Jean Messier Damper strut for aircraft landing gear
DE570800C (en) * 1929-04-30 1933-02-20 George Louis Rene Jean Messier Hydro-pneumatic, double-acting shock absorber
DE837551C (en) * 1950-02-02 1952-04-28 Siegener Eisenbahnbedarf Ag Street scooter or similar heavy-duty vehicle with a large number of spring-loaded wheels
FR1090608A (en) * 1953-09-29 1955-04-01 Process for transforming by-products of agricultural industries into animal feed
FR1092457A (en) * 1953-10-24 1955-04-21 Improvements to vehicle suspension

Also Published As

Publication number Publication date
FR1184182A (en) 1959-07-17
DE1089282B (en) 1960-09-15

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