| dc.description.abstract | The safe operation of vehicles on roads depends, among other things, on a properly functioning
brake system. An ‘Air Braking System’ has been designed to use in commercial heavy vehicles
with heavier braking capacity and greater efficiency than conventional braking system. Air brake
systems are widely used in commercial vehicles such as trucks, tractor-trailers and buses. In these
brake systems, compressed air is used as the energy transmitting medium to actuate the foundation
brakes mounted on the axles. Normally compressed air is produced by an Air Compressor which
is directly driven by the Engine of vehicle. No governing system given between Engine & Air
Compressor. Governing system provided after Air Compressor which act as Pressure Relief Valve
where the valve will be opened on a certain pressure and release the air to atmosphere. Compressed
air then dried through an Air Drier to ensure moisture free air to the system to protect all rubber
components. Then the air stored to a Reservoir Tank from where compressed air travel to actuators
as per driver pedal pressing. On foot pedal, Dual Brake Valve is given to regulate the air pressures
to actuator. Air Pressure Gauge tapped from the Reservoir Tank to show the actual pressure into
the system. Actuators convert the pneumatic pressures to linear motion. This linear motion makes
the useful torque through Slack Adjuster where worm gear arrangement given. Slack Adjuster
gives a rotary motion to S-Cam which directly press the brake liner to drum and applied the brake
on wheels.
In this project, we are implementing governing system between Engine & Air Compressor. When
maximum designed pressure will be developed to the system, Air Compressor will be disengaged
from Engine. Hence power loss of engine will be reduced. Also, Air Compressor life will be
extended. As per theoretical calculation, 0.35 % of engine power loss can be prevented by this
governing system. Also approximate 450-liter fuel cost can be minimized in a single year | en_US |
