The document discusses the transmission system of an automobile. It describes the purpose of a transmission as sending power from the engine to the drive wheels. It then discusses the main types of transmissions, focusing on continuously variable transmissions (CVTs). CVTs allow for infinite gear ratios between the engine and wheels for better acceleration and fuel efficiency. The document outlines the key components of a transmission system, including the flywheel, clutch, gearbox, propeller shaft, differential, axles and gears. It provides details on specific parts like the purpose of a differential and how gear ratios are calculated.

1. TRANSMISSION SYSTEMBy:- PRITAM WANI

2. WHAT IS TRANSMISSION ?
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.
Purpose of the transmission is to provide high torque at the time of starting the
engine, hill climbing , acceleration and pulling a road.

3. TRANSMİSSİON SYSTEM IN AN AUTOMOBİLE

4. TRANSMİSSİON SYSTEM IN AN AUTOMOBİLE

5. TYPES OF TRANSMISSION
 Manual Transmission
 Fully Automatic Transmission
 Semi-automatic Transmission
 Continuously Variable Transmission

6. The continuously variable transmission (CVT) is a transmission in which the ratio
of the rotational speeds of two shafts, as the input shaft and output shaft of a vehicle
or other machine, can be varied continuously within a given range, providing an
infinite number of possible ratios. The CVT allows the driver or a computer to
select the relationship between the speed of the engine and the speed of the wheels
within a continuous range.
CONTINUOUSLY VARIABLE TRANSMISSION

7. BENEFITS OF CVT
 Transmission ratio can be adjusted continuously
 Better acceleration
 Improve fuel efficiency
 Provides a smoother ride than automatic transmission
 No gear shift

8. TYPES OF CVT
 Polaris P90 CVT
 CVTech CVT
 Gaged CVT
 Comet CVT

9. GAGED CVT
Gaged CVT consist of two pulley system . One is primary
(works on centrifugal force) and second one is
secondary (works on spring tension mechanism) .
Lower ratio = Outer pitch circle diameter driven pulley
Inner pitch circle diameter of driving pulley
Higher ratio =Inner pitch circle diameter of driven pulley
Outer pitch circle diameter of driving pulley
Gaged CVT

10. PARTS OF A TRANSMISSION SYSTEM
ENGINE SPECIFICATION
The vehicle may only use Briggs & Stratton Engine
Model Number :- 19L232-0054-G1

11. FLY WHEEL
A flywheel is a mechanical device
specifically designed to efficiently
store rotational energy. Flywheels resist
changes in rotational speed by their moment
of inertia.
flywheel stored energy is used
increasing or decreasing its rotational speed
applying a torque aligned with its axis of
symmetry.

12. CLUTCH
A clutch is a mechanical device
that provides for the transmission of
power from one component to another
when engaged and disengaged with the
help of paddle.

13. GEAR BOX
The gearbox is the central
component of the vehicle's transmission
system. In this manner, a gearbox
converts an engine's speed into torque, or
thrust, which propels the vehicle forward
or revers direction

14. PROPPLER SHAFT
An automobile may use a
longitudinal shaft to deliver power from
an transmission (Gear box) to the final
drive

15. To transmit the power to the
wheels while allowing them to
rotate at different speeds. Also as
the final gear reduction in the
vehicle, slowing the rotational
speed of the transmission.
FINAL DRIVE

16. A pair of short drive
shafts is commonly used to send
power from a final drive
(Differential unit) to the wheels
AXLES

17. DIFFERENTIAL
Differential is a mechanism
which provide different speed to
tyres at cornering.
It provides equal torque on
both tyre not power.

18. GEAR RATIO
It is the ratio of the no. of teeth on the driven wheel to no. of teeth on the driver wheel or the
speed of rotation of the driver to the driven .
For example:
Gear ratio,
G=(20/10)=2:1
(smaller gear is the driver)
20 Teeth
10 Teeth