A4vso 250 EO2 controller pump

[Pravin086]

Can anyone help to understand the attach image.
How this three different flow and pressure condition are considered A4VSO 250 EO2 pump
360 lpm 100 bar
300 lpm 285 bar
275 lpm 310 bar

And what will be same for A4vso180 pump
@ 100 bar
@285 bar
@ 310 bar

 

[hydtools]

Compare displacements to estimate flow.

Ted

 

[Pravin086]

is there any relation of pressure here?

 

[hydtools]

That pumps are different displacements. These are their respective flow rates at the noted pressures.

See the linked data.

Ted

 

[Pravin086]

Can you explain with some example.or in graph

 

[hydtools]

Ted

 

[Pravin086]

How
300 lpm @ 285 bar
360lpm @ 100 bar

 

[hydtools]

Leakage.
These, like all pumps, are not perfect and fluid will leak through the clearances. The higher the pressure, the more fluid leakage, thus reduced output flow.

Ted

 

[Bruksarn]

In the first post it looks like 160 kW motor.
Power control, (power limiter)?

275x310/600= 142 kW

Control system EO1/2 (see RE 92076)
The stepless adjustment of the displacement is
accomplished by means of a proportional valve
with electrical feedback of the swivel angle.
This control can be utilized as an electric control of
displacement.

 

[LittleInch]

The figures listed and the graph are quite different.

We only have a small snapshot of those figures.

Can you post the whole thing.

Something doesn't add up.

On the graph 100 bar is 365 and 280 bar is 360.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[hydtools]

Here is the pdf file.

Ted

 

[LittleInch]

I actually meant the snapshot by Pravin 086 in his OP as this is where the issue comes from. Those numbers don't match the document hydtools has posted, but we don't know why.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[hydtools]

Also need to know the operating rpm. Note that the charts are for the 250 pump at 1500rpm and 1000rpm and the 180 pump at 1800rpm and 1500rpm.

Ted