racered57, yes, the locomotive engines, and any steam engine that displays the traditional 'puffing' out the stack is using the exhaust steam to induce scavenging through the fire box. Even when you se one stopped and an occasional burst of exhaust smoke, that's the steam powered air compressor cycling.
And they may very well have injected steam into the fire box. They never missed a trick to improve the efficiency of those old engines!
Makes sense that adding a little water to the combustion would give it a boost. Just like any hotrod will run noticeably better on a cold damp day.
There used to be an add-on contraption for gas engines, probably back in the 30's-60's that was a glass jar under the hood that metered in a small amount of water to the intake. Supposed to boost mileage and power. Must have been something to it, it was around for a long time! Never understood how it didn't freeze, maybe it used alcohol antifreeze.
And I've heard the early jet bombers used water injection on take off, when the black smoke was bellowing and the sound was deafening!
I don't know how it works, but would think it would have something to do with the water going crazy when the fire lights, multiplying the expansion!
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Today's Featured Article - Old Time Threshing - by Anthony West. A lovely harvest evening late September 1947, I was a school boy, like all school boys I loved harvest time. The golden corn ripens well and early, the stoking, stacking,.... the drawing in with the tractors and trailers and a few buck rakes thrown in, and possibly a heavy horse. It would be a great day for the collies and the terrier dogs, rats and mice would be at the bottom of the stacks so the dogs, would have a busy time hunting and killing, all the corn was gathered and ricked in what we c
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