[jeff88]

So I was wondering if this was possible and what it would take to do it...

I was thinking about having a kill switch (either a button or put it into neutral, more on that in the next paragraph), which will kill all, but one of the cylinders. When at a light I can hit the switch, which will kill 3 cylinders, but leave one on. When the light turns green, the other 3 cylinders will come on when I step on the gas, either all at once, or individually as needed (like a certain RPM count turns another one on, then the next, then the last). If I can make it to my destination without turning the other cylinders on then great, if not then I have the power of the cylinders to get me up to speed, but they won't be used if I don't need them.

For the neutral kill switch, I am thinking it would need at least two inputs. The first is obviously the transmission in neutral, but the second is RPM speed. If I am at speed and RPMs are say 1500, then it will not kill the engine, but at lets say 900 or less RPMs then it will work.

My question is: is this possible?, how do I do it?, and would it save me fuel in the long run (i.e. does the load of one cylinder powering the whole car without the "help" of the other 3 cylinders negate the savings of the other 3 cylinders being off?

Thanks for your help and insight!
Jeff