Basic Constant Pressure System

Question 1

What does the pump do?

Answer 1

Constant positive pressure provides motive force for the system oil.

Question 2

What does the header tank do?

Answer 2

Header tank provides positive pressure to the suction of the positive displacement pump.

Acts a reserve for the oil system.
Assists in the de-aeration and the cooling of the oil.

Question 3

DCV what does it stand for and what does it do?

Answer 3

Directional control valve
Directs oil to either side if the actuator to control direction.

Question 4

ACTUATOR

Answer 4

used to convert hydraulic energy into mechanical work.

Example Capstan

Question 5

Advantages of a constant pressure system?

Answer 5

Good replenishment
Constant filtration
Good cooling

Question 6

Disadvantages of the constant pressure system?

Answer 6

Can’t set up the relief valve if the dcv is open centred

Poor speed control

No bypass on the filter

Question 7

Rotary actuator (bi directional motor) what does it do?

Answer 7

Concerts hydraulic energy into rotary motion.