Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Xtrapolis Traction > Train Pneumatics > Flashcards

Train Pneumatics Flashcards

1
Q

What components make up the air systems? (9)

A

Two air compressors
Compressor Governor
Compressor Governor I.C.
Air dryers
Main Reservoir
Auxiliary Reservoir
Main Reservoir Pipe
Auxiliary Pneumatic Panel
Brake Pipe

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is Main Reservoir pressure?

A

750 - 900 kPa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What pressure does the Main Reservoir safety valve operate at?

A

980 kPa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is BP pressure on normal operation?

A

0 kPa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

At what Main res pressure will emergency brakes apply?

A

580 kPa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is BP pressure on rescue operation?

A

550 kPa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is Holding BC Pressure?

A

120 kPa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is full service BC Pressure?

A

190 kPa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is Emergency BC pressure?

A

210 kPa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

When do both air compressors operate?

A

When pressure is below 650 kPa both operate

When pressure builds to 750-900kPa one will switch off

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What pressure does the compressor Governor maintain Main Reservoir pressure at?

A

750-900 kPa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What happens to air compressors if compressor Governor is isolated?

A

If on they will stay on

If off they won’t come on

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What does the Main Reservoir system supply compressed air to? (4)

A

Friction Braking system (aux. res)
Trip
Whistle/horn
Pneumatic auxiliary panel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What does the auxiliary reservoir do?

A

Supplies air to EP (friction) brakes

Air supplied via valves to BCs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What does the Main Reservoir pipe connect from/to?

A

Main Res air to

Auxiliary Res. (Mc Tp)
Auxiliary Pneumatic Panels (Mc)
Scharfenberg Coupler (Mc)
SPBs (Mc)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Where is the primary suspension
Vs
Secondary suspension?

A

Primary - between axle and bogie
Secondary - between bogie and carriage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What does the secondary suspension consist of?

A

Rubber mounted spring
Bump stoppers - lateral m’vmnt
Vertical dampers
Lateral dampers

17
Q

What are the four braking systems in an XTrap?

A

Service brake
Holding brake
Emergency brake
Spring park brake

18
Q

What is the service brake made up of?

A

ED & EP

19
Q

When does EP brake operate?

A

At low speed when ED is ineffective

During wheel slide events

20
Q

What EP equipment do Mc’s have
Vs
Equipment that Tp’s have?

A

Mc - 1 tread brake per wheel
1 disc per axle

Tp - 1 tread brake per wheel

21
Q

What do Friction Brake Indicator lights show?

A

Red if friction / EP applied.

Green if friction / EP released

22
Q

Which cars to ED brakes operate on?

A

Mc

23
Q

When do ED brakes operate?

A

Above 10 kmh

24
Q

When does brake blending occur?

A

5-10kmh

25
Q

When does ED brake become ineffective?

A

5kmh

26
Q

When does Holding Brake apply?

A

When train speed falls below 0.5kmh

EP releases - holding brake automatically applies

27
Q

What is BC Holding brake pressure?

A

120 kPa

28
Q

When does Holding Brake release?

A

When traction power is obtained

29
Q

What is emergency brake pressure?

A

210 kPa

30
Q

When does emergency brake apply?

A

When MCH is placed to emergency

Emergency stop button activated in any cab

Safety loop being de-energised (open)

31
Q

Where are SPBs located?

A

Wheels 1, 3, 7 on Mc cars inly

32
Q

How are SPBs applied?

A

Automatically as main res air depletes to 350 kPa

33
Q

How do SPBs release?

A

Automatically as main res air increases

34
Q

Can SPBs be applied manually?

A

No

35
Q

Can SPBs be released manually?

A

Yes

Unlock and pull handle

36
Q

What are the Emergency Mode Switch (EMS) Switch positions?

A

1 online holding brake inhibit
2 normal
3 rescued
4 rescuing
5 rescuing in propulsion

37
Q

How do you charge the BP?

A

With EMS in 3, 4, or 5 both trains place MCH to full service brake position

38
Q

When will BP pressure cause safety loop to open?

A

Below 300 kPa

39
Q

At what BP pressure will safety loop close allowing emergency brake to release?

A

430 kPa

Xtrapolis Traction (12 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions