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[quote]QUOTE: Originally posted by egmurphy As Daniel mentioned, they inject the oil using steam to force it through the spray heads. So it's under pressure only at the final point. It flows from the tender by gravity. [quote]QUOTE: Daniel: 1.) The floor of the firebox on an oil burner is solid, there is no gap between the sides and bottom (in practice, small gaps of sunlight can be seen, but it's not a big deal.[/quote]Could be, but not necessarily all of them. The one oil burner (actually converted to diesel) I am aquainted with does have a large opening in the bottom of the fire box, or maybe they're just huge dampers. [/quote] I would guess that it's the damper, but you've seen it, I haven't. On vertically drafted locomotives, like the one I work on, there is a square hole in the floor, which opens into a "box" of which one side is the damper door. [quote]QUOTE: Originally posted by egmurphy [quote]QUOTE: 4.) It is made more fluid by heating it with steam put into the tender (it condenses, and at the end of the day the tank is drained of water).[/quote]Some had steam heating coils passing through the oil bunker in the tender. I suspect there were several variations. [/quote] You're absolutely right, I was keeping things simple. This teaches me to be mindful though that for every "fact" about steam locomotives, there are 17 railroads with different practices.
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