Revision Q Braking Systems Flashcards
What types of brakes are on a Comeng?
Rheostatic
E.P Brake
Auto Air Brake
What are the three functions of the Brake Controller ?
-Charge, Apply & release air brake
-Apply and release E.P Brake
-Control operation of Rheo Brake
What is the normal Brake Pipe operating pressure ?
550KPa
What pressure from Brake pipe is the minimal reduction ?
50KPa
What pressure would the Brake Pipe reduce to after a full service application ?
380-410kPa (Plus it Minus 20 kPa)
What pressure in Brake cylinders after an emergency brake application ?
275kPa
What pressure in the brake cylinders after putting EP into Step 7 ?
250kPa
What are the three positions of the brake controller (Air Brake)?
-Running and Release
-Service Zone
-Emergency
After making an air brake application, how are the auxiliary Res charged?
-The Aux res is charged from the brake pipe
-Only done after the handle is placed back into Run and Release.
On Westcode, what would be the outcome of several applications of the air brake?
Multiple applications of air brake will result in depleted Aux res and severely reduced brake efficiency
On a Knorr, what reservoir aids the Aux res for the air brake ?
Pre control reservoir
What type of comeng has wheel slide protection during automatic air brake?
-Knorr comeng trains
-Only Westcode trains fitted with a relayed brake system
How many steps of EP and how many effective?
- 7 steps
- 6 effective (1&2 share kPa)
Can the EP brake be isolated?
Tripping the EP brake circuit breaker
Will you still have Rheo after tripping EP circuit breaker ?
No
