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Discussion Starter · #1 ·
Does anyone know if VCM kicks in while Ody 12 is idling at say traffic light? Looks like it does 'cause the MPG doesn't drop as much, but the ECO sign never comes on.
 

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Discussion Starter · #3 ·

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hmm, wondering any reason why not shut off couple to boost city MPG.
At that low of an RPM, it is easier to keep the engine spinning by using all six. The amount of fuel is minimal, but consistent. I would guess that firing just 3 or 4 cylinders increases fuel consumption because of the extra "push" each cylinder would need to generate to compensate for the ones that are at rest.
 

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Also my guess is that it is much of a hassle to enable VCM on idle (vibration, launching effort and its emissions, etc.) for such fuel small savings.

But the overall idea is being taken by other vendors (albeit smaller engines), let's see how it develops, it reminds me of gas golf carts :)

MAZDA:Idling stop technology | Environmental Technology
 

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Also my guess is that it is much of a hassle to enable VCM on idle (vibration, launching effort and its emissions, etc.) for such fuel small savings.

But the overall idea is being taken by other vendors (albeit smaller engines), let's see how it develops, it reminds me of gas golf carts :)

MAZDA:Idling stop technology | Environmental Technology
Pretty cool! Anything to squeak out a few more mpg's.
 
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