the power to drive....
11-11-2009, 07:07 PM
#16
Rennlist Member
same compressor speed, more air flow, and same pressure? then it is a lot more efficient.
Yes, there are a bunch of factors, and it helps to know the application. sizing the compressor to the displacement, boost level and RPM is the trick
Yes, there are a bunch of factors, and it helps to know the application. sizing the compressor to the displacement, boost level and RPM is the trick
Hi MK,
The test was done at the same compressor speed..... 13K Rpm (shaft input power required to spin the compressor...) The Autorotor flows more air than the Eaton at the same shaft speed, and uses less input power to do it..
There is a bit more to it than just meets the eye, in that the internal pressure ratio of the compressor will also affect the power required to run the compressor... I believe the internal pressure ratio of the 2.2L Autorotor is 1.2
In any case, maybe Colin should elude to what he wants the information for.. It may already available...
The test was done at the same compressor speed..... 13K Rpm (shaft input power required to spin the compressor...) The Autorotor flows more air than the Eaton at the same shaft speed, and uses less input power to do it..
There is a bit more to it than just meets the eye, in that the internal pressure ratio of the compressor will also affect the power required to run the compressor... I believe the internal pressure ratio of the 2.2L Autorotor is 1.2
In any case, maybe Colin should elude to what he wants the information for.. It may already available...
11-11-2009, 07:13 PM
#17
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tricks and things...
11-12-2009, 02:52 AM
#18
Nordschleife Master
Thread Starter
I am mainly interested in seeing how much power that it requires to drive one of the AR on the 928S4
I personally would like to do one on an auto. But I really dont like the intake manifolds which are being used for them.
So I would be more insterested in mounting it away from the engine and driving it remotely. But I would need to know roughly how much power it would require to know as to if it is feasible or not.
I personally would like to do one on an auto. But I really dont like the intake manifolds which are being used for them.
So I would be more insterested in mounting it away from the engine and driving it remotely. But I would need to know roughly how much power it would require to know as to if it is feasible or not.
11-12-2009, 09:43 AM
#19
Nordschleife Master
The engineer in me wonders if some produce a cooler charge. Perhaps a roots blower absorbs more heat during compression.
