how do you read a turbine map ?

[vortecfiero]

found these on Garretts web site and im trying to understand what im seeing
and how do i plot my engines turbine requirements ?

http://www.turbobygarrett.com/turbobygarrett/products/turbochargers.html

thanks in advance

 

[vortecfiero]

Re: how do you read a turbine map ?

found this one but its going to take some reading lol

http://www.dieseltruckresource.com/dev/do-turbine-maps-tell-us-turbo-t168543.html?t=168543

 

[Quickstop [UK]]

Re: how do you read a turbine map ?

The top one isn't a turbine map per se...

You need to see a map with the efficiency lines - it looks like an island in the middle.

There are a lot of variables but you need your engines volumetric efficiency, volume, max flow rate in cfm for starters...

BMW forum....not a bad description