Bertil wrote: |
Hi,
Okay, I'm familiar with this problem from studies involving racing engines.
In the slide throttle mechanism, the throttle valves are slightly opened because the power loss caused by a closed throttle, due to compression and intake losses, is greater than the power loss with an open throttle.
Why was that the case?
The only explanation is that the loss due to the closed DK is higher than the "compressor function" alone. |
...and the wider the valve is open, the smaller the pressure difference between the suction and "discharge" sides of the compressor (i.e., the exhaust).
And the less pressure a compressor builds up, the less power it consumes
.
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