This article is about hydrodynamic fluid couplings. For hydroviscous fluid couplings, see Viscous coupling unit.
Daimler car fluid flywheel of the 1930s
A fluid coupling or hydraulic coupling is a hydrodynamic or 'hydrokinetic' device used to transmit rotating mechanical power.[1] It has been used in automobile transmissions as an alternative to a mechanical clutch. It also has widespread application in marine and industrial machine drives, where variable speed operation and controlled start-up without shock loading of the power transmission system is essential.
Hydrokinetic drives, such as this, should be distinguished from hydrostatic drives, such as hydraulic pump and motor combinations.
A fluidcoupling or hydraulic coupling is a hydrodynamic or 'hydrokinetic' device used to transmit rotating mechanical power. It has been used in automobile...
A torque converter is a device, usually implemented as a type of fluidcoupling, that transfers rotating power from a prime mover, like an internal combustion...
a planetary gearbox (allowing much shifting to be automated) with a fluidcoupling instead of a friction clutch, eliminating the need for de-clutching...
transmission is connected to the engine via a torque converter (or a fluidcoupling prior to the 1960s), instead of the friction clutch used by most manual...
described the fluid used in the 1939 Chrysler Fluid Drive and its subsequent revisions and enhancements through 1954. The fluid drive fluidcoupling is partially...
A viscous coupling is a mechanical device which transfers torque and rotation by the medium of a viscous fluid. Rotary viscous couplings with interleaved...
Following the development of the fluidcoupling, Sinclair in turn licensed the fluidcoupling, now also known as "Fluidrive Coupling" to many companies including...
providing only three forward speeds plus a small 8" fluidcoupling with a stator inside of the fluidcoupling (a type of torque converter, only integral with...
kinetic energy of a fluid, via a torque-converter and fluidcoupling, before producing the final rotary output. Here, the fluid is driven through rotor...
A coupling is a device used to connect two shafts together at their ends for the purpose of transmitting power. The primary purpose of couplings is to...
overrunning clutch on the transmission countershaft. The flywheel's fluidcoupling used S.A.E 10 motor oil for lubrication. The transmission gearbox used...
control with automatic 2-speed shift vacuum operated) with clutch and fluidcoupling (Fluid Drive); also known as Simplimatic, Powermatic 1946–1953 M5/M6 Presto-Matic...
instability. Wikimedia Commons has media related to Clutch (coupling). Clutch control Coupling Freewheel Gear shift Saxomat Torque converter Torque limiter...
and idling. It has been superseded for automobile applications by the fluidcoupling, torque converter and automated manual transmissions. The input of the...
a single-speed (without a low-range option). It featured a viscous fluidcoupling for the quiet and smooth power transfer to the axle with the most traction...
during acoustic stimulation stimulates the inner hair cells through fluidcoupling, and the outer hair cells via direct connection to their tallest stereocilia...
and much more robust than standard-road versions. There is usually a fluidcoupling interposed between the engine and gearbox, and the gearbox is often...
transmission had no front fluidcoupling at all, and utilized a single "fill-and-dump" coupling to perform double duty as both a fluidcoupling in third speed while...
26 litre water-cooled Rolls-Royce B.60 petrol engine. Connected by a fluidcoupling to a pre-selector five speed epicyclic gearbox, all gears available...
also known as a vaporiser or pressure reducer Torque converter, a fluidcoupling to transfer torque Fountain pen converter, a removable filling mechanism...
known as the "Slip-N-Slide Powerglide", due to the fluidcoupling, as opposed to the mechanical coupling of a clutch-driven gearbox, and the "Positive-Pop...
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