GB964798A - Improvements in and relating to drive transmissions - Google Patents
Improvements in and relating to drive transmissionsInfo
- Publication number
- GB964798A GB964798A GB692961A GB692961A GB964798A GB 964798 A GB964798 A GB 964798A GB 692961 A GB692961 A GB 692961A GB 692961 A GB692961 A GB 692961A GB 964798 A GB964798 A GB 964798A
- Authority
- GB
- United Kingdom
- Prior art keywords
- clutch
- shaft
- valve
- converter
- 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
-
- 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
- F16H45/00—Combinations of fluid gearings for conveying rotary motion with couplings or clutches
- F16H45/02—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type
-
- 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
- F16H45/00—Combinations of fluid gearings for conveying rotary motion with couplings or clutches
-
- 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
- F16H45/00—Combinations of fluid gearings for conveying rotary motion with couplings or clutches
- F16H2045/005—Combinations of fluid gearings for conveying rotary motion with couplings or clutches comprising a clutch between fluid gearing and the mechanical gearing unit
-
- 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
- F16H45/00—Combinations of fluid gearings for conveying rotary motion with couplings or clutches
- F16H45/02—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type
- F16H2045/0273—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type characterised by the type of the friction surface of the lock-up clutch
- F16H2045/0284—Multiple disk type lock-up clutch
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
964,798. Friction clutches; hydrodynamic transmissions; clutch combinations; clutch control; hydro-mechanical change speed gear; change-speed control. FRANCAISE DU FERODO S.A. Feb. 24, 1961 [Feb. 25, 1960; June 15, 1960], No. 6929/61. Headings F2C, F2D and F2L. An hydraulically disengaged, spring engaged, multi-disc friction clutch E, series-arranged between a fluid coupling or, as shown, an hydrodynamic torque converter C and an input shaft 11 of a motor vehicle change speed gear, comprises an hydraulic servo cylinder 21 secured to the converter turbine T, and a presser piston 22 constrained to rotate with the cylinder 21 by a Belleville spring washer 23 which constantly urges the piston 22 rightwards to grip friction discs 24, 25 respectively splined to the piston 22 and a hub 26 splined on the shaft 11. The torque converter comprises an impeller P connected to a driving shaft 10 through a housing 13 and a flexible diaphragm 12, a reactor R reacting on a fixed sleeve 16 through a oneway detent 19, and the turbine T which also is one-way detained with respect to the sleeve 16 to prevent backward movement of the vehicle when parked on a slope. In Fig. 2, oil from the engine lubrication circuit is circulated from a sump 66 by a pump 65 through a spring-loaded electromagnetic distributer valve 49a, lines 40a, 40, the torque converter through an inlet 68 and an outlet 69, around the cylinder 21 leftwards of the presser piston 22 to augment clutch engaging pressure, through radial ports 54 in the hub 26, a bore 55 in the shaft 11 and a calibrated spring-loaded one-way valve 73 adjusted to prevent converter cavitation, and back to the sump 66. When the usual gear lever L is moved during shift a switch 75 is closed to rightwardly move the valve 49a to direct oil through lines 34, 50, 51 to the cylinder space 28 rightwards of the presser piston 22 to disengage the clutch E against the Belleville washer 23. When the gear lever is released the valve 49a is returned to recirculate oil to the converter and drain the cylinder space 28 through the line 50 and a line 77 in the valve 49a. The linings of the discs 25 have radial grooves 25a so that during upshift when the discs 25 rotate slower than the turbine T the oil mass in the cylinder space 28 is braked to relatively increase the centrifugal force of the oil leftwards of the presser piston 22 and thereby shorten the period of clutch reengagement. During downshift when the discs 25 rotate faster than the turbine T, the centrifugal force in the cylinder space 28 is increased and the clutch re-engagement period is prolonged. The continuous engaging force of the Belleville washer 23 enables engine-starting by movement of the vehicle. The bearings of the concentric shafts are provided with drain pipes 79, 79a, to the sump, upstream of the seals 78, 78a. In Fig. 3 (not shown) oil return from the converter is through a non-return valve into the cylinder space 28, the radial grooves 25a in the discs 25, and the lines 55, 77. This non- return valve is preferably calibrated to prevent converter cavitation. During gear change, the space 28 is pressurized through a further non- return valve, the electromagnetic valve, and the line 55, the cylinder non-return valve closing. In Fig. 4, a further single disc friction clutch 89, hydraulically engaged, spring disengaged, is provided between the driving housing and a hollow shaft 90 coaxial with the shaft 11. The shafts 11, 90 carry gears 93, 94 respectively constantly meshing gears 95, 96 on a shaft 97. By suitable overlapping control of the two clutches, break in transmission during shift can be avoided. Engine braking may be obtained through both shafts 11, 90. A freewheel clutch may be interposed in one of the two gear trains, e.g. between the gear 95 and the shaft 97, in which case only the shaft 90 is available for engine braking and clutch E need not be disengaged. Alternatively, the shafts 11, 90 may drive two input shafts of an epicyclic train which, with the two clutches engaged, could be locked-up for split-torque direct drive.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR819522A FR1263812A (en) | 1960-02-25 | 1960-02-25 | Improvements to transmissions incorporating a hydraulic power transmission unit with disengageable output shaft |
FR830032A FR77904E (en) | 1960-06-15 | 1960-06-15 | Improvements to transmissions incorporating a hydraulic power transmission unit with disengageable output shaft |
Publications (1)
Publication Number | Publication Date |
---|---|
GB964798A true GB964798A (en) | 1964-07-22 |
Family
ID=26185081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB692961A Expired GB964798A (en) | 1960-02-25 | 1961-02-24 | Improvements in and relating to drive transmissions |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB964798A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2122703A (en) * | 1982-06-18 | 1984-01-18 | Toyota Motor Co Ltd | Transmission mechanism with parallel transmission paths including torque converter in the first speed path only |
GB2338537A (en) * | 1998-03-23 | 1999-12-22 | Mannesmann Sachs Ag | Torque converter with friction coupling between turbine impeller shell and turbine impeller hub |
CN106468326A (en) * | 2015-08-20 | 2017-03-01 | 舍弗勒技术股份两合公司 | Centrifugal force pendulum and the fluid torque-converter with centrifugal force pendulum |
CN113565900A (en) * | 2021-07-26 | 2021-10-29 | 贵州凯星液力传动机械有限公司 | Combined hydraulic retarder |
-
1961
- 1961-02-24 GB GB692961A patent/GB964798A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2122703A (en) * | 1982-06-18 | 1984-01-18 | Toyota Motor Co Ltd | Transmission mechanism with parallel transmission paths including torque converter in the first speed path only |
GB2338537A (en) * | 1998-03-23 | 1999-12-22 | Mannesmann Sachs Ag | Torque converter with friction coupling between turbine impeller shell and turbine impeller hub |
US6079529A (en) * | 1998-03-23 | 2000-06-27 | Mannesmann Sachs Ag | Torque converter |
GB2338537B (en) * | 1998-03-23 | 2003-01-15 | Mannesmann Sachs Ag | Torque converter |
CN106468326A (en) * | 2015-08-20 | 2017-03-01 | 舍弗勒技术股份两合公司 | Centrifugal force pendulum and the fluid torque-converter with centrifugal force pendulum |
CN113565900A (en) * | 2021-07-26 | 2021-10-29 | 贵州凯星液力传动机械有限公司 | Combined hydraulic retarder |
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