Quote:
Originally posted by buzz70@Oct 15th 2004 @ 2:32 PM
On the coasting issue, if the gas engine is running, then you're still using gas in all 4 cylinders to keep the engine running while you're coasting, using more gas than just using 1, and letting the inertia of the car help turn the engine. That's what I was referring to, not shutting of the gas engine completely and coasting.
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I guess I must confess my ignorance to the "3 cylinders shutting down" aspect of the HCH technology.
Question: So does the RPM go down when the engine cuts to 1 cylinder? If the RPM does not go down, how could it possibly be using less fuel, because would not using fewer cylinders decrease the RPMs, barring that the one remaining cylinder take on the whole work of driving the RPMs? And why would it only do this when needing to push the car and not do this when the car is idling at rest?
Is there a thread on this site or a web page that explains under what conditions the HCH will execute this shutdown? I'd love to know more about it and how to force the car to do it.
Thanks...