GB914580A - Improvements in or relating to drives - Google Patents
Improvements in or relating to drivesInfo
- Publication number
- GB914580A GB914580A GB1925160A GB1925160A GB914580A GB 914580 A GB914580 A GB 914580A GB 1925160 A GB1925160 A GB 1925160A GB 1925160 A GB1925160 A GB 1925160A GB 914580 A GB914580 A GB 914580A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fluid
- housing
- coupling
- bellows
- space
- 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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
- F01P7/042—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio using fluid couplings
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D35/00—Fluid clutches in which the clutching is predominantly obtained by fluid adhesion
- F16D35/02—Fluid clutches in which the clutching is predominantly obtained by fluid adhesion with rotary working chambers and rotary reservoirs, e.g. in one coupling part
- F16D35/029—Fluid clutches in which the clutching is predominantly obtained by fluid adhesion with rotary working chambers and rotary reservoirs, e.g. in one coupling part actuated by varying the volume of the reservoir chamber
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
914,580. Cooling cylinders. THOMPSON RAMO WOOLDRIDGE. May 31, 1960, No. 19251/60. Class 7(2) [Also in Groups XXVI and XXIX] An hydraulic coupling 1, Fig. 1, for the fan 3 of an internal combustion engine 2 comprises a driving element 18, Fig. 2, and a driven element 20 separated by a coupling space of constant volume, and a temperature-responsive expansible and contractible means for displacing fluid into and out of the coupling space. The drive may be transmitted hydrodynamically or, as described, by the viscosity of the fluid. The driving element 18 forms an end wall of a housing 28 which is mounted on a sleeve 10 driven by a belt 68 from the engine 2 and has a wall 32 secured by a bellows 30 to its other end wall 24 in contact with the air or water cooling system of the engine. The heat may be transmitted by conduction or radiation; in the latter case, the wall 24 is preferably painted flat black. The bellows contains a bi-metal element or a fluid, such as gas or alcohol in liquid 36 and vapour 38 form, responsive to temperature so that, when heated, it expands to displace a viscous liquid 26 formed into a ring by the centrifugal effect of rotation of the housing into the coupling space between the wall 18 and the driven element consisting of a disc 20 secured to a shaft 14 to transmit torque to the fan. Depending on the quantities of fluid in the housing and bellows, an increase in centrifugal force caused by increased rotation of the housing may compress or expand the bellows to vary the quantity of fluid in the coupling space. The movement of the bellows may be effected against spring, atmospheric or gaseous pressure. In another embodiment, the driving element consists of a disc 142, Fig. 6, keyed to a shaft 126 which is belt-driven from the engine and supports a housing 144 carrying the fan 103; the disc may have free or fixed axial connection to the shaft. The disc extends into a coupling space between surfaces 166, 167 on the housing which is formed with a recess 160 receiving an annular, radiallyextending chamber 162 of brass or plastic material containing a temperature responsive fluid such as acetate, alcohol or the fluid known under the Registered Trade Mark "Freon". Expansion or contraction of the chamber controls the amount of fluid, such as silicone or petroleum oil, between the surfaces 166, 167 and hence the torque transmitted by the coupling. The housing is shaped to form a space 168 and centrifugal force acting on the fluid in the space, between the surfaces 166, 167 and in the recess 160, acts on the chamber 162 to vary its volume and the amount of liquid between the surfaces. In a further embodiment, the annular chamber 162 extends axially of the coupling to reduce the effect of centrifugal force. Cooling fins 178, 180, 182 are provided on the housing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1925160A GB914580A (en) | 1960-05-31 | 1960-05-31 | Improvements in or relating to drives |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1925160A GB914580A (en) | 1960-05-31 | 1960-05-31 | Improvements in or relating to drives |
Publications (1)
Publication Number | Publication Date |
---|---|
GB914580A true GB914580A (en) | 1963-01-02 |
Family
ID=10126248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1925160A Expired GB914580A (en) | 1960-05-31 | 1960-05-31 | Improvements in or relating to drives |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB914580A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2422069A1 (en) * | 1978-04-05 | 1979-11-02 | Sueddeutsche Kuehler Behr | TEMPERATURE CONTROLLED COUPLING, FILLED WITH A VISCOUS LIQUID |
EP0005927A2 (en) * | 1978-05-30 | 1979-12-12 | Household Manufacturing, Inc. | Fluid shear coupling |
FR2742828A1 (en) * | 1995-12-21 | 1997-06-27 | Fichtel & Sachs Ag | VISCOUS FAN COUPLING, WITH FILLING RESERVE CHAMBER FUNCTION OF CENTRIFUGAL FORCE |
-
1960
- 1960-05-31 GB GB1925160A patent/GB914580A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2422069A1 (en) * | 1978-04-05 | 1979-11-02 | Sueddeutsche Kuehler Behr | TEMPERATURE CONTROLLED COUPLING, FILLED WITH A VISCOUS LIQUID |
EP0005927A2 (en) * | 1978-05-30 | 1979-12-12 | Household Manufacturing, Inc. | Fluid shear coupling |
EP0005927A3 (en) * | 1978-05-30 | 1980-01-09 | Wallace Murray Corporation | Fluid shear coupling |
FR2742828A1 (en) * | 1995-12-21 | 1997-06-27 | Fichtel & Sachs Ag | VISCOUS FAN COUPLING, WITH FILLING RESERVE CHAMBER FUNCTION OF CENTRIFUGAL FORCE |
ES2134704A1 (en) * | 1995-12-21 | 1999-10-01 | Fichtel & Sachs Ag | Viscous joint for fan |
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