11-03-2012, 01:13 PM
Plz snd me the report 123thejas[at]gmail.com
11-03-2012, 01:13 PM
Plz snd me the report 123thejas[at]gmail.com
12-03-2012, 11:29 AM
To get more information about the topic "vacuum braking system " please refer the link below
https://seminarproject.net/Thread-vacuum-braking-system https://seminarproject.net/Thread-vacuum...3#pid12313
04-09-2012, 04:19 PM
VACUUM BRAKING SYSTEM
vacuum brake.pptx (Size: 272.03 KB / Downloads: 125) INTRODUCTION What is a brake? A Brake is mechanical device which inhibits the motion. The Basic Concepts What is vacuum ? A condition in which pressure is less than atmospheric pressure. How to attain vacuum ? Vacuum can be attain by using these devices- Ejector or exhauster Mechanical pump Electric pump Vacuum Braking system Vacuum brake is a mechanical device which inhibits the motion using vacuum. Vacuum forces a piston in a cylinder to hold a brake shoe off a drum. When the vacuum is destroyed, the shoe is released and presses on the drum. Components function Brake valve It is used by the driver to control the brake It work on four positions- Release- Connects the exhauster to the brake pipe. Running- Exhauster keeps running at slow speed. Lap- Shut off the connection. Brake On- Closes off connection to the exhauster & opens the brake pipe to atmosphere Exhauster It creates the vacuum pressure inside the brake pipe It is a two speed rotary machine- High speed- To evacuate the brake pipe as quickly as possible. Low speed- To maintain the vacuum against any small leaks or losses in the brake pipe. |
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