| David Breneman wrote:
>--- "Andrew B. Lundgren" <lundgren@byu.net> wrote:
>
>  
>
>>Some power is required to pump air into the exhaust system.  There
>>is 
>>nothing in the exhaust that would be able to create additional
>>power from the air, so there can be now power benefit from it.
>>    
>>
>
>It helps scavenge exhaust from the cylinders and purges the exhaust
>stream of unburnt hydrocarbons while cooling the exhaust flow
>at the same time, so they say.  :-)
>  
>
But that isn't going to provide any extra power benefit I don't think.  
And the pump is going to take from it.
 |