Quote:
Originally Posted by stovie
I was just wondering if you could create a pumping system that utilizes springs and a small part of the combustion chamber pressure to move the oil through the motor??
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Take the part I have marked in red, out, and is that not exactly what a standard oil pump does? Only it utilises the pressure in the cylinder instead of wastefully leaking it out. You cannot get something for nothing. If any part of the engine pumps the oil then you must use energy (fuel) to drive it. The only way to lubricate the engine for free is to use solar power(!) or the waste heat from the engine.