GB1361131A - Pressure fluid control systems in motor vehicles - Google Patents
Pressure fluid control systems in motor vehiclesInfo
- Publication number
- GB1361131A GB1361131A GB3716972A GB3716972A GB1361131A GB 1361131 A GB1361131 A GB 1361131A GB 3716972 A GB3716972 A GB 3716972A GB 3716972 A GB3716972 A GB 3716972A GB 1361131 A GB1361131 A GB 1361131A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pump
- connection
- closed
- valve
- control systems
- 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
-
- 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
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/0021—Generation or control of line pressure
- F16H61/0025—Supply of control fluid; Pumps therefore
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/007—Installations or systems with two or more pumps or pump cylinders, wherein the flow-path through the stages can be changed, e.g. from series to parallel
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
1361131 Change-speed control AUTOMOBILWERK EISENACH VEB 9 Aug 1972 37169/72 Heading F2D A vehicle transmission system is pressurized by primary and secondary pumps 1, 2 driven respectively by the engine and road wheels, and valve means are provided in the connections between the primary pump 1 and the pressurized system and between the secondary pump 2 and the reservoir 11, the arrangement being such that the first connection is closed when the pump 2 is operative, e.g. during push-starting, and the second connection is closed when the pump 1 is operative. Inn the embodiment shown, the valve means comprises a valve piston 6 acted upon by a spring 7. During push-starting, the connection between the lines 3, 5 is closed until the engine is running when operation of the pump 1 will displace the piston to close the connection between the pump 2 and the reservoir 11. In a second embodiment, Fig. 2, oneway valves 8, 9 replace the valve 6, 7.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3716972A GB1361131A (en) | 1972-08-09 | 1972-08-09 | Pressure fluid control systems in motor vehicles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3716972A GB1361131A (en) | 1972-08-09 | 1972-08-09 | Pressure fluid control systems in motor vehicles |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1361131A true GB1361131A (en) | 1974-07-24 |
Family
ID=10394331
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3716972A Expired GB1361131A (en) | 1972-08-09 | 1972-08-09 | Pressure fluid control systems in motor vehicles |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1361131A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2307148A1 (en) * | 1975-04-07 | 1976-11-05 | Tyrone Hydraulics | EMERGENCY HYDRAULIC SUPPLY SYSTEM |
DE102018219170A1 (en) * | 2018-11-09 | 2020-05-14 | Volkswagen Aktiengesellschaft | Oil system, in particular oil system for a motor vehicle, with a low pressure branch and with a high pressure branch |
-
1972
- 1972-08-09 GB GB3716972A patent/GB1361131A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2307148A1 (en) * | 1975-04-07 | 1976-11-05 | Tyrone Hydraulics | EMERGENCY HYDRAULIC SUPPLY SYSTEM |
DE102018219170A1 (en) * | 2018-11-09 | 2020-05-14 | Volkswagen Aktiengesellschaft | Oil system, in particular oil system for a motor vehicle, with a low pressure branch and with a high pressure branch |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |