Quote:
Originally Posted by drmiller100
so.........
if we could figure out how to run a gasoline engine without a throttle plate, our CITY mileage would improve 20 to 30 percent.
probably not as much gain on the highway.
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Well it'd save you at idle but when accelerating the throttle doesn't consume much power, so I dunno, depends a lot on driving style (engine off coast hypermilers would see little benefit) and what you call "city" conditions. In the future I think we'll start to see manufacturers have the throttle wide open when engine braking, as soon as regenerative brakes of some sort become standard.
On the highway it should be worth a few percent, since you're always holding part load.