This is in response to Mr Rahul Chaudhari’s query regarding air brakes and vacuum brakes: The maximum pressure that can be generated using vacuum is 1 atmosphere, while theoretically there is no limit to the pressure of compressed air. This higher pressure means that for a given force needed to apply the brakes, the brake cylinders can be much smaller than for a vacuum brake. (Recall physics formula : Pressure = Force/Area) Thus the cylinders and apparatus of AB are smaller than that of VB. The emergency braking distance for a train running at 65 km/hr, for Air Brake is 632 metres, while for Vacuum Brake it is 1097 metres. This becomes all the more important when the length of the train is longer. These are the primary advantages of air brake over vacuum brake. For a detailed understanding of the subject and in order to know some more advantages of air brakes , please go through the following: 123seminarsonly/Seminar-Reports/027/49381788-Brake-systems-used-by-IR.pdf
Posted on: Thu, 01 Aug 2013 11:18:14 +0000
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