GB1054403A - - Google Patents
Info
- Publication number
- GB1054403A GB1054403A GB1054403DA GB1054403A GB 1054403 A GB1054403 A GB 1054403A GB 1054403D A GB1054403D A GB 1054403DA GB 1054403 A GB1054403 A GB 1054403A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- rod
- unit
- reservoir
- cylinder
- 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
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
- B60G17/044—Self-pumping fluid springs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Actuator (AREA)
Abstract
1,054,403. Self-levelling hydro-pneumatic suspension units. GIRLING Ltd. Nov. 18, 1963 [Oct. 17, 1962], No. 39246/62. Heading F2S. A self-levelling hydro-pneumatic suspension unit for vehicles comprises a piston 12 which works in a cylinder 11 and which has a hollow rod 13 which extends through a seal 30 in a closure 31 for the lower end of the cylinder 11 the upper end of which is closed by a partition 18 with two-way valves 19, 20 and 19, 21 and carries a pneumatic pressure chamber 10, and a solid pumping rod 17 which is secured to the partition 18, is a sliding fit through an axial bore 22 in the piston 12, and extends within a pumping tube 23 which projects downwardly from the piston into the piston rod 13. The pumping tube 23 communicates, through a one-way valve 24 and an annular chamber 25 in the piston 12 with the hollow interior of the piston rod 13 which acts as a reservoir and accommodates a gas-filled bag 27 and, through a duct 33 and another one-way valve 32, with the high pressure chamber in the cylinder above the piston 12. A port 28 in the wall of the piston rod 13 places the annular space 29 between the piston 12 and the sealing unit 31 in communication with the low pressure space of the reservoir. The rod 17 moves upwardly, on expansion of the unit, to draw fluid from the reservoir through the one-way valve 24 and the annular chamber 25 into the pumping tube 23 and downwardly, on contraction of the unit, to pump liquid from the tube 23 and through the one-way valve 32 into the high pressure chamber above the piston 12 to extend the unit. When the unit reaches its maximum permitted extension the lower end of the rod 17 moves out of the bore 22 and into a counterbore 34 so that liquid can return from the high pressure end of the cylinder to the reservoir 26 by way of the counterbore 34 and a passage 36 in the piston connecting the bore 22 to the annular chamber 25 which is in communication with the reservoir 26. The lower end of the rod 17 is preferably tapered so that as the unit approaches its maximum extension the volume of liquid pumped by the piston is progressively reduced. The orifice 36 may be controlled by a plate or other valve.
Publications (1)
Publication Number | Publication Date |
---|---|
GB1054403A true GB1054403A (en) | 1900-01-01 |
Family
ID=1758117
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1054403D Expired GB1054403A (en) |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1054403A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1530973B1 (en) * | 1967-01-21 | 1970-04-16 | Bilstein August Fa | self-pumping hydropneumatic shock absorber with internal level control for motor vehicles |
DE1630033B1 (en) * | 1967-06-16 | 1971-01-07 | Hoesch Ag | Self-pumping hydropneumatic suspension strut with internal level control |
-
0
- GB GB1054403D patent/GB1054403A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1530973B1 (en) * | 1967-01-21 | 1970-04-16 | Bilstein August Fa | self-pumping hydropneumatic shock absorber with internal level control for motor vehicles |
DE1630033B1 (en) * | 1967-06-16 | 1971-01-07 | Hoesch Ag | Self-pumping hydropneumatic suspension strut with internal level control |
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