What is the working principle of fluid coupling?
A fluid coupling or hydraulic coupling is a device used for transmitting power from one shaft to another shaft by means of acceleration and deceleration of a hydraulic fluid. Fluid coupling is based on hydro-kinetic principles and requires that the output speed be less than the input.
What is fluid coupling briefly explain the construction and operation of it?
Also known as hydraulic coupling. Structurally, a fluid coupling consists of an impeller on the input or driving shaft and a runner on the output or driven shaft. The fluid mass emerges at high velocity from the impeller, impinges on the runner blades, gives up its energy, and leaves the runner at low velocity.
What does a fluid coupler do?
Fluid coupling also known as hydraulic coupling is a hydrodynamic device which is used to transfer rotational power from one shaft to another by the use of transmission fluid. It is used in automotive transmission system, marine propulsion system and in industries for power transmission.
What are the main components of fluid coupling?
The fluid coupling consists of a pump impeller (on the input shaft) and a runner (on the output shaft). Both impellers are housed in the same casing. The pump impeller pushes the fluid inside the casing (usually low-viscosity oil) towards the runner, which causes the output shaft to rotate.
Which oil is used in fluid coupling?
hydraulic oil
The Oil to be used in the coupling shall be hydraulic oil, mineral type, conforming to Grade-3 of IPSS: 1-09-002, “Specification for hydraulic Oil, Mineral Oil type”. The supplier shall emboss on the body of the fluid coupling the recommended filling angel and quantity of Oil required for a particular rating.
What is the difference between torque converter and fluid coupling?
Fluid coupling is used for transfer torque at high speed to wheel while torque converter converts torque at low speed. They both consist two rotors while torque converter also consist stator with two rators.
What is fluid coupling in mechanical engineering?
A fluid coupling or hydraulic coupling is a hydrodynamic or ‘hydrokinetic’ device used to transmit rotating mechanical power. It has been used in automobile transmissions as an alternative to a mechanical clutch.
How do you fill oil in fluid coupling?
Checking Of Oil Fill
- Place filling plug in vertical position and remove it.
- Rotate the coupling slowly until the oil just comes up to the filling hole. This position must match the angle.
- If necessary, remove or add some oil.
- Replace filling plug or tighten.
What is the Fottinger principle?
The hydrodynamic principle was devised in 1905 by the German engineer Hermann Föttinger. Hydrodynamic transmission converts the torque and speed within the power flow of a driving machine to a working machine based on their own, indirect principle.
What are the limitations of fluid coupling?
Disadvantages
- There is always slip.
- The fluid filled in casing must be compatible with coupling component, it directly affects the transmission behavior of the fluid coupling.
- Fluid coupling cannot develop torque when the driving shaft and driven shaft are rotating in same angular velocity.
What is the operating principle of a fluid coupling?
4 Föttinger principle – the Föttinger coupling Originally the operating principle of the fluid coupling is based on the hydrodynamic torque converter patented by Hermann Föttinger (1877 – 1945): The mass forces are transmitted via a flowing fluid (e. g. oil) while driving and driven side are mechanically separated from each other.
Why are hydrodynamic couplings important for industrial drive systems?
6Voith Turbo I Hydrodynamic Couplings The value of industrial drive systems in creases with the value of the functions made available by the respective drive for the driven machine or process. It is therefore essential for the drive en- gineer to understand the driven processes and their requirements. 2 Drive systems
What kind of coupling does a KCP / ckcp have?
Model KCP/CKCP: This coupling contains two sections consisting of a fluid coupling circuit (the CKCP contains a delay-fill chamber) and a PARA-FLEX® coupling consisting of a PARA-FLEX PH high speed element and PS assembly with TAPER-LOCK® bushing.
What is the standard torque of a KTR coupling?
The standard coupling (type K) limits the torque to 1.8 to 2.0 times the rated torque of the motor. Fitting so-called delay chambers allows reduction of the start-up torque. The result is a smoother start-up with a longer start-up phase. The oil in the chamber reaches the working chamber only slowly.