basics of transmission system
TRANSCRIPT
![Page 1: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/1.jpg)
BY :KARTIK PALIWAL
&
VINAY KANT SAHU
NIT,BHOPAL
![Page 2: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/2.jpg)
TRANSMISSION SYSTEM
The transmission is a device that is connected
to the back of the engine and sends the power
from the engine to the drive wheels.
![Page 3: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/3.jpg)
WHY TRANSMISSION NEEDED ?
1 TRANSMITTING POWER FROM
ENGINE TO THE WHEELS
2 TO MATCH THE LOAD REQUIREMENT
3 PROVIDING MECHANICAL
ADVANTAGE
4 A TRANSMISSION WORKS BY
ALLOWING THE ENGINE TO OPERATE
IN IT'S NARROW RANGE OF SPEEDS
WHILE OUTPUTTING A BROAD RANGE
OF SPEEDS.
![Page 4: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/4.jpg)
1 SPACE 8 feasibility
2 POWER REQUIRED
3 POWER SOURCE
4 RANGE OF SPEED
5 WEIGHT
6 ECONOMIC
7 LINKS
A GEAR
B CHAIN
C SHAFT
CONSTRAINTS WE KEEP IN MIND WHILE
DESIGNING TRANSMISSION
![Page 5: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/5.jpg)
VARIOUS EXAMPLE OF TRANSMISSION
SYSTEM
![Page 6: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/6.jpg)
![Page 7: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/7.jpg)
DESIGNING
TRANSMISSION FOR
cycle
DESIGNING
TRANSMISSION FOR
bike
DESIGNING
TRANSMISSION FOR car
1 POWER REQUIRED
less Moderate 6-60 BHP Car 80-1000BHP
2 power source
manual driven Ic engine 100-500CC Ic engine 800-6000CC
3 weight
very less less 100- 200KG High 1000-6000kg
4 range of speed
low High High
5 links
chain ,sprocket Chain sprocket Gear train , cardan shaft
6 economic
less costly Moderate High cost
7 SPACE
LESS Less high
8 feasibility
chain sprocket Chain sprocket Gear train + drive shaft
![Page 8: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/8.jpg)
2 WHEEL
DRIVE
Two types
1 REAR
WHEEL DRIVE
2 FRONT
WHEEL DRIVE
![Page 9: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/9.jpg)
2 WHEEL DRIVE 4 WHEEL DRIVE
Advantages
1 less of a power loss
2 The production costs are
lower.
3The engine sitting over
the driving wheels gives
better traction.
4 simple construction
Disadvantage
vehicle is accelerated the
weight of the car shifts to
the rear and the front
wheels tend to scrabble for
grip.
Eg swift,maruti 800,indica
1 Improved traction
and handling
2 Able to transmit
torque to all
four wheel
3 Higher initial cost
and weight
Requires special
service and
maintenance
Eg DUSTER, trucks
![Page 10: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/10.jpg)
COMPONENT OF TRANSMISSSION
SYSTEM
• CLUTCH
• GEAR BOX/TRANSMISSION
• CARDAN SHAFT
• DIFFERENTIAL
• WHEELS/TYRES
![Page 11: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/11.jpg)
![Page 12: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/12.jpg)
CLUTCH
![Page 13: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/13.jpg)
CLUTCH SYSTEM
CLUTCH IS THE CRUCIAL LINK BETWEEN THE
POWER PLANT (ENGINE) AND THE DRIVELINE
THE PURPOSE OF THE CLUTCH
• LINK OR DE-LINK(ENGAGE OR DIS-ENGAGE)
THE ENGINE FROM THE DRIVELINE, AS DESIRED
BY THE DRIVER
COMPONENTS OF CLUTCH
•CLUTCH ACTUATION MECHANISM
LINK TYPE
CABLE TYPE
HYDRAULIC TYPE
•CLUTCH PRESSURE PLATE
•CLUTCH DRIVEN PLATE
![Page 14: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/14.jpg)
![Page 15: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/15.jpg)
![Page 16: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/16.jpg)
How does a clutch work
https://www.youtube.com/watch?v=pqF-
aBtTBnY&index=13&list=UUjDn0r-Jxfmh-
HR4id885yw
![Page 17: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/17.jpg)
GEAR RATIO
•It is also known as its speed ratio, is the
ratio of the angular velocity of the input
gear to the angular velocity of the output
gear.
• The gear ratio can be calculated directly
from the numbers of teeth on the gears in
the gear train.
•This shows that a simple gear train with
two gears has the gear ratio R given by
![Page 18: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/18.jpg)
•A gearbox is a mechanical
device utilized to increase
the output torque or change
the speed (RPM) of a motor.
•The motor's shaft is
attached to one end of the
gearbox and through the
internal configuration of
gears of a gearbox, provides
a given output torque and
speed determined by the
gear ratio.
GEAR BOX
![Page 19: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/19.jpg)
HOW DOES A MANUAL
TRANSMISSION WORKS ??
https://www.youtube.com/watch?v=K53c
PGRE1Kk
![Page 20: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/20.jpg)
H pattern
![Page 21: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/21.jpg)
TYPE OF GEAR SHIFTING
1 H PATTERN
EG CARS
2 SEQUENTIAL GEAR SHIFTING
EG BIKE
3 AMT GEAR SHIFTING
EG CELEREO
4 CVT
![Page 22: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/22.jpg)
![Page 23: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/23.jpg)
![Page 24: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/24.jpg)
![Page 25: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/25.jpg)
SEQUENTIAL GEAR SHIFTING
![Page 26: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/26.jpg)
CALCULATION
![Page 27: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/27.jpg)
Calculating final drive ratio ( If)
Let vmax. = maximum vehicle speed ( km/hr) at highest gear
ratio
Let highest gear ratio be 1:1 for the sake of convenience
( Nw)max . = max. rpm of wheel
(Ne )pmax. = rpm of engine at max. power
Vmax. = 2π * Rw * (Nw)max.*60 /1000
= 0.377 Rw * (Nw)max.
(Nw )max. = Vmax. / 0.377 Rw
As (Nw)max. will occur at (Ne)pmax ,
(Nw)max. = (Ne)pmax / ig*if
If = 7.4646 : 1 (Final drive ratio )
![Page 28: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/28.jpg)
EQUATION OF MOTION FOR VEHICLE
1 ROLLING RESISTANCE
rolling resistance, sometimes called rolling friction or rolling
drag, is the force resisting the motion when a body (such as
a ball, tire, or wheel ) rolls on a surface
2 AERODYNAMIC DRAG
3 GRADING RESISTANCE
The force, due to gravity, that resists the movement of a vehicle
up a slope.
4 ACCELERATION RESISTANCE
Force experienced during acceleration due to inertial forces
![Page 29: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/29.jpg)
1. Rolling resistance R.R. (min.) = CR*mg
= 0.037*2943 = 108.9 N
R.R. ( max.) = 0.06*2943 = 176.58 N
2. Force on slope Fs = mg * sinɵ
= 2943 * sin (22.50)
= 1126.23 N
3. Force for acceleration
Force = mass * velocity max. / time
Fa = 300 * 16 / 8
= 600 N
Total tractive effort = R.R. + Fs + Fa
= 176.58 + 1126.23 + 600
= 1902.8 N
Total wheel torque = total tractive effort *wheel radius
=627.92 Nm
![Page 30: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/30.jpg)
BAJA VEHICLE SPECIFICATION
DETERMINING THE BOTTOM GEAR RATIO
Bottom gear ratio
Ig = Tw/Tmax*if*nt
where
Tw = wheel torque
Tmax = maximum torque from
engine
Nt = transmission efficiency
Ig= 4.922:1
![Page 31: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/31.jpg)
PROPELLER
SHAFT
• propeller shaft is a mechanical component for
transmitting torque and rotation, usually used to
connect other components of a drive train that
cannot be connected directly because of distance or
the need to allow for relative movement between
them
![Page 32: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/32.jpg)
DIFFERENTIAL
• The differential is designed
to drive a pair of wheels
while allowing them to rotate
at different speeds.
•When cornering, the inner
wheel needs to travel a
shorter distance than the
outer wheel, so with no
differential, the result is the
inner wheel spinning and/or
the outer wheel dragging,
and this results in difficult
and unpredictable handling,
damage to tires and roads,
and strain on (or possible
failure of) the
entire drivetrain.
![Page 33: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/33.jpg)
HOW DIFFERENTIAL WORKS
https://www.youtube.com/watch?v=yYAw
79386WI
![Page 34: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/34.jpg)
NEW TECHNOLOGIES
1 c v t
2 TORQUE CONVERTER
![Page 35: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/35.jpg)
CVT
https://www.youtube.com/watch?v=DldU
aOWnKQM
![Page 36: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/36.jpg)
TORQUE CONVERTER
https://www.youtube.com/watch?v=z5G2
zQ_3xTc&list=UUjDn0r-Jxfmh-HR4id885yw
![Page 37: BASICS OF TRANSMISSION SYSTEM](https://reader033.vdocument.in/reader033/viewer/2022052223/55a6973f1a28ab6b2d8b4701/html5/thumbnails/37.jpg)
THANK YOU