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An exhaust tap with a one way reed valve exposes the separator to repeating periods of negative pressure, much like a diode being used to rectify alternating current. |
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OIL SEPARATORS?
.... Oil control and blow-by issues are not an aircraft only domain. The main
difference between antique aircraft engines, and everything else is the lack of desire to make any improvements or modernize, unless absolutely necessary. The aircraft manufacturers for many years didn't really care if the engines dumped oil out on the ground at every stop, or left a trail as they flew over. All other (than aircraft) engine manufacturers, in every industry wide application, addressed this issue some fifty years ago. All modern engines basically have an oil separator built internally into the engine, and none of them have a pipe or hose that spews oil out on the ground. Everything is contained inside the engine, and these engines run two hundred thousand, or more miles with virtually no major maintenance or repairs. I am certain everyone reading this is driving an automobile so equipped. All certified aircraft manufactured for decades are equipped with an oil separator from the factory, and those all return the oil to the crankcase where it belongs. I am confident that were this the wrong approach, the thousands of real engineers involved, with deep pockets, and unperilled facilities to address this would be doing it differently. My thoughts on oil separators. Thanks, Allan..:D |
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