PPT gives you a detailed idea about fluid flywheel (fluid coupling),
its principle,construction,working, characteristics and applications with animated videos included.
videos: https://www.youtube.com/watch?v=xfaMBGMpH1o
https://www.youtube.com/watch?v=11Q4g-oOLr8
The suspension System of an automobile is one which separates the wheel/axle assembly from the body. The primary function of the suspension system is to isolate the vehicle structure from shocks & vibration due to irregularities of the road surface.
Transmission is a part of the car which connects the engine to the wheels. When car speeds up, the engine can not speed up in the same proportion, so there are gears involved which match the engine speed to the wheel speed so that we can drive faster or slower than the engine speed.
Propeller shaft is a circular shaft which is used to transmit the power or rotational motion from the gear box to the final drive.
The propeller shaft as the name suggest “ propels the vehicle.
The suspension System of an automobile is one which separates the wheel/axle assembly from the body. The primary function of the suspension system is to isolate the vehicle structure from shocks & vibration due to irregularities of the road surface.
Transmission is a part of the car which connects the engine to the wheels. When car speeds up, the engine can not speed up in the same proportion, so there are gears involved which match the engine speed to the wheel speed so that we can drive faster or slower than the engine speed.
Propeller shaft is a circular shaft which is used to transmit the power or rotational motion from the gear box to the final drive.
The propeller shaft as the name suggest “ propels the vehicle.
International Journal of Engineering Research and DevelopmentIJERD Editor
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Hydraulic liquids, are the medium by which power is transferred in hydraulic machinery. Common hydraulic fluids are based on mineral oil or water.Examples of equipment that use hydraulic fluids include excavators and backhoes, hydraulic brakes, power steering systems, transmissions, garbage trucks, aircraft flight control systems, lifts, and industrial machinery.Work is taken from fluids due to mechanical advantage ,i.e, applying low input in form of force and getting a higher output in form of a large force .
Hydraulic Jack is a device that uses force to lift heavy loads. The primary
mechanism with which force is applied varies, depending on the specific type of
jack, but is typically a screw thread or a hydraulic cylinder. Jacks can be
categorized based on the type of force they employ: mechanical or hydraulic.
Mechanical jacks, such as car jacks and house jacks, lift heavy equipment and are
rated based on lifting capacity (for example, the number of tons they can lift).
Hydraulic jacks tend to be stronger and can lift heavier loads higher, and include
bottle jacks and floor jacks.
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𝘼𝙣𝙩𝙞𝙦𝙪𝙚 𝙋𝙡𝙖𝙨𝙩𝙞𝙘 𝙏𝙧𝙖𝙙𝙚𝙧𝙨 𝙞𝙨 𝙫𝙚𝙧𝙮 𝙛𝙖𝙢𝙤𝙪𝙨 𝙛𝙤𝙧 𝙢𝙖𝙣𝙪𝙛𝙖𝙘𝙩𝙪𝙧𝙞𝙣𝙜 𝙩𝙝𝙚𝙞𝙧 𝙥𝙧𝙤𝙙𝙪𝙘𝙩𝙨. 𝙒𝙚 𝙝𝙖𝙫𝙚 𝙖𝙡𝙡 𝙩𝙝𝙚 𝙥𝙡𝙖𝙨𝙩𝙞𝙘 𝙜𝙧𝙖𝙣𝙪𝙡𝙚𝙨 𝙪𝙨𝙚𝙙 𝙞𝙣 𝙖𝙪𝙩𝙤𝙢𝙤𝙩𝙞𝙫𝙚 𝙖𝙣𝙙 𝙖𝙪𝙩𝙤 𝙥𝙖𝙧𝙩𝙨 𝙖𝙣𝙙 𝙖𝙡𝙡 𝙩𝙝𝙚 𝙛𝙖𝙢𝙤𝙪𝙨 𝙘𝙤𝙢𝙥𝙖𝙣𝙞𝙚𝙨 𝙗𝙪𝙮 𝙩𝙝𝙚 𝙜𝙧𝙖𝙣𝙪𝙡𝙚𝙨 𝙛𝙧𝙤𝙢 𝙪𝙨.
Over the 10 years, we have gained a strong foothold in the market due to our range's high quality, competitive prices, and time-lined delivery schedules.
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2. ABOUT
The FLUID FLYWHEEL is mostly known as
the HYDRAULIC COUPLING.
It is a hydrodynamic device used to
transmit rotating mechanical power.
It has been used
in automobile transmissions as an
alternative to a mechanical clutch and in
cars having automatic transmission.
It also has 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.
3. CONSTRUCTION
A fluid coupling consists of three components:
The housing, also known as the shell, has an oil-tight
seal around the drive shafts.
Two turbines (fan like components):
One connected to the input shaft; known as
the pump or impellor
The other connected to the output shaft, known as
the turbine or runner
The driving turbine, known as the 'pump’, is rotated by
the prime mover.
The two turbines are mounted very close, with their
open ends facing each other, so that they can be turned
independently without touching.
Housing surrounds both units to make a closed
assembly.
About 80 percent of the interior of the assembly is filled
with oil.
4. WORKING
When the engine is started, the driving member
starts to move inside the housing containing oil.
As the impeller is completely filled with oil, due to
centrifugal force this oil is forced radially outwards.
The impeller is designed such that the splashed oil
will strike the vanes of the driven member.
Hence the runner is forced to move in the same
direction and tends to rotate at the same speed.
5.
6.
7. HYDRAULIC FLUID
As a fluid coupling operates kinetically. Thus, low viscosity fluids are
preferred.
Generally multi-grade motor oils or automatic transmission fluids are
used. Increasing density of the fluid increases the amount
of torque that can be transmitted at a given input speed.
However, hydraulic fluids, much like other fluids, are subject to
changes in viscosity with temperature change. This leads to a change
in transmission performance.
So for constant efficiency, a motor oil or automatic transmission fluid
with a high viscosity index should be used.
8. CHARACTERISTICS OF A FLUID
FLYWHEEL
Stall speed
The stall speed is defined as the highest speed at which the pump can turn
when the output turbine is locked and maximum input power is applied.
Under stall conditions all of the engine's power would be dissipated in the
fluid coupling as heat, possibly leading to damage.
Slip
The runner speed is almost equal to that of the impeller only when the
efficiency of liquid coupling is highest. But usually the runner speed is less
than that of the impeller. The (speed) lag of the runner behind the impeller is
known as slip. This (speed) slip varies with many factors such as engine
speed, vehicle speed and engine and vehicle load.
Slip is given as (N1-N2)/N1 where N1,N2 are speed of driving and driven
9. ADVANTAGES
An ordinary friction clutch would be damaged by prolonged
slipping. But by prolonged slipping, the fluid flywheel will not
suffer any mechanical damage.
When a liquid coupling is used with a conventional clutch and
transmission, it enables the driver to use the clutch and gears
with less skill and fatigue than with an all mechanical linkage.
Unskilful clutch engagement or selection of the improper gear
will not produce any chattering and bucking.
Any sudden load is cushioned and absorbed by the coupling
so that dynamic stresses on the gear teeth of the transmission
are greatly reduced.