Flash944's attack on a 50 MPG beater

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01-14-2009, 12:25 AM

#61

onlyflash944

1.5 BAR

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Join Date: Oct 2006

Posts: 964

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?

01-14-2009, 12:29 AM

#62

b18.

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Join Date: Nov 2006

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Re: Flash944's attack on a 50 MPG beater

Quote:

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?

01-14-2009, 01:04 AM

#63

Hitchhikkr

3.0 BAR

Join Date: Oct 2006

Posts: 2,330

Re: Flash944's attack on a 50 MPG beater

Quote:

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.