Old Mech -
Quote:
Originally Posted by Old Mechanic
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Oh and by the way, if you are idling at all, or operating any engine with a throttle restriction of any kind, you are doing it wrong. Look at the Innas link that shows the area of BSFC operation of the engine using their system.
regards
Mech
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Sounds like the Fiat 500 agrees :
Fiat 500: Tiny Car Packed with Technical Wizardry - Technology & science - Tech and gadgets - TechNewsDaily - msnbc.com
Quote:
Technical wizardry
This stylish little Fiat will bring with it some innovations virtually unknown on American roads. One of them seems at first impossible: It has no throttle. It has a gas pedal, but no true throttle per se.
In a gasoline engine the " throttle " is well-named: It's a valve that progressively opens or closes the air intake to the engine, thereby "throttling" (choking down) the flow of air so the engine produces only the amount of power the driver requires. Whether the engine has an old-fashioned carburetor or modern fuel injection, opening or closing this valve (via the gas pedal) is how the driver "opens up" the engine for more power or "throttles down" for less power. But the Fiat 500 has no throttle valve at all. The air intake is always wide open and unobstructed.
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CarloSW2