When input = hydrocarbon plus oxygen, output = carbon dioxide and water. However, reality isn't that pure - LOTS of other stuff in the air and fuel.
On 1/6/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > Actually there is quite a bit of water vapor that comes out of the tailpipe > in most any engine. The water that you see dripping out of your tailpipe each > morning is not from condensation, it is water vapor, a by product of the > combustion process. When the engine is warmed up, the water is still there, > you just can't see it as it comes out as "steam". I once saw a stat on how > much water comes out of an engine going down the road and it was pretty > impressive, like gallons per mile as I recall. Another good indication of > this phenomenem is the "contrails" or condensation trails left by jet > aircraft. In this case the water ejected with the engine exhaust quickly > cools at those high altitudes and looks like smoke, but it is really a trail > of ice crystals. > > Barry -- OK Don, KD5NRO Norman, OK '90 300D 243K, '87 300SDL 290K, '81 240D 173K, '78 450SLC 67K, '97 Ply Grand Voyager 78K