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HomemadeTurbo - DIY Turbo Forum (https://www.homemadeturbo.com/)
-   General Discussion (https://www.homemadeturbo.com/general-discussion-6/)
-   -   Flash944's attack on a 50 MPG beater (https://www.homemadeturbo.com/general-discussion-6/flash944s-attack-50-mpg-beater-95302/)

onlyflash944 01-14-2009 12:25 AM
Re: Flash944's attack on a 50 MPG beater
 
Ever thought about using a positive displacement blower with an underdrive pulley that would allow a gas engine to be throttled without a butterfly valve?

b18. 01-14-2009 12:29 AM
Re: Flash944's attack on a 50 MPG beater
 
Originally Posted by onlyflash944
Ever thought about using a positive displacement blower with an underdrive pulley that would allow a gas engine to be throttled without a butterfly valve?
Some diesels are like that.

Why not have that and the throttle mechanism be a CVT?

Hitchhikkr 01-14-2009 01:04 AM
Re: Flash944's attack on a 50 MPG beater
 
Originally Posted by onlyflash944
Ever thought about using a positive displacement blower with an underdrive pulley that would allow a gas engine to be throttled without a butterfly valve?
How would you modulate it in a detonation condition quickly? Direct fuel injection is fast, but you still have residual fuel in the cylinder, enough to cause a lean burn and possible detonation. That leaves you with ignition control only. Big brother doesnt like excess fuel dumped into the exhaust. Wouldnt work nicely for a gas application.

Propane would be an excellent candidate for that concept.


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