FR2278021A1 - Hydraulic control for automatic gear box - with electro-magnetic valve to regulate hydraulic servo pressure - Google Patents
Hydraulic control for automatic gear box - with electro-magnetic valve to regulate hydraulic servo pressureInfo
- Publication number
- FR2278021A1 FR2278021A1 FR7521603A FR7521603A FR2278021A1 FR 2278021 A1 FR2278021 A1 FR 2278021A1 FR 7521603 A FR7521603 A FR 7521603A FR 7521603 A FR7521603 A FR 7521603A FR 2278021 A1 FR2278021 A1 FR 2278021A1
- Authority
- FR
- France
- Prior art keywords
- electro
- gear box
- magnetic valve
- automatic gear
- servo pressure
- 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.)
- Withdrawn
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
- F16H61/02—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 characterised by the signals used
- F16H61/0202—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 characterised by the signals used the signals being electric
- F16H61/0251—Elements specially adapted for electric control units, e.g. valves for converting electrical signals to fluid signals
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
The gear change of the automatic transmission is controlled by a number of selective brakes operating on the epicyclic gear trains. The brakes are operated w.r.t. hydraulic pressure from a pump. To modulate the gear change positions, and in order to smooth out the gear change action to protect the transmission components and provide a more comfortable ride, the output from the pump is modulated by an electromagnetic flap valve. The flap is pulled shut against hydraulic pressure, by the action of the solenoid. The amount of solenoid pressure is easily regulated by the control circuit.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3031074 | 1974-07-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2278021A1 true FR2278021A1 (en) | 1976-02-06 |
Family
ID=10305627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7521603A Withdrawn FR2278021A1 (en) | 1974-07-09 | 1975-07-09 | Hydraulic control for automatic gear box - with electro-magnetic valve to regulate hydraulic servo pressure |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS5131367A (en) |
DE (1) | DE2530484A1 (en) |
FR (1) | FR2278021A1 (en) |
IT (1) | IT1040870B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0114816A1 (en) * | 1982-08-04 | 1984-08-08 | Ford Motor Co | Solenoid operated pressure regulation. |
FR2570521A1 (en) * | 1984-09-18 | 1986-03-21 | Renault | REGULATION DEVICE WITH TWO PRESSURE DOMAINS |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59110923A (en) * | 1982-12-15 | 1984-06-27 | Kawasaki Heavy Ind Ltd | Hydraulic clutch connection controller for power shift type transmission |
-
1975
- 1975-07-08 IT IT5043175A patent/IT1040870B/en active
- 1975-07-09 JP JP50083648A patent/JPS5131367A/en active Pending
- 1975-07-09 DE DE19752530484 patent/DE2530484A1/en active Pending
- 1975-07-09 FR FR7521603A patent/FR2278021A1/en not_active Withdrawn
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0114816A1 (en) * | 1982-08-04 | 1984-08-08 | Ford Motor Co | Solenoid operated pressure regulation. |
EP0114816A4 (en) * | 1982-08-04 | 1985-09-18 | Ford Motor Co | Solenoid operated pressure regulation. |
FR2570521A1 (en) * | 1984-09-18 | 1986-03-21 | Renault | REGULATION DEVICE WITH TWO PRESSURE DOMAINS |
EP0187051A1 (en) * | 1984-09-18 | 1986-07-09 | Regie Nationale Des Usines Renault | Double range pressure regulation device |
US4679988A (en) * | 1984-09-18 | 1987-07-14 | Regie Nationale Des Usines Renault | Two-range pressure control system |
Also Published As
Publication number | Publication date |
---|---|
DE2530484A1 (en) | 1976-02-12 |
IT1040870B (en) | 1979-12-20 |
JPS5131367A (en) | 1976-03-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |