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Technology Stocks : Advanced Engine Technologies (AENG)

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Nov 14 9:30 AM EST

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To: Greg Cummings who wrote ()	5/20/1998 3:05:00 PM
From: shashyazhi	Read Replies (1) of 3383

Now that a diagram of the intestines of the OX-2 engine is available, I can see how each piston can complete two cycles per revolution. The piston plates were the missing link. They must be splined, or keyed, to the rotating output shaft. The cylinder block rotates, too. Those cruciform piston plates are each carrying four pistons. The cruciform plates are travelling in opposite directions, pushing the pistons into their respective bores and guiding them back at a furious rate equivalent to an ordinary engine turning 10,000 RPM. The stationary cam plate has ramps which accelerate the pistons rapidly into their bores and hold them near top dead center for a longer period than a conventional crankshaft. The cam plate causes the pistons to descend at a slower rate, extracting more horsepower out of the expanding gasses. This is important as the piston nears mid-stroke. But it is the sheer number of power strokes per minute that determine the horsepower output of the OX-2. The cam plate also causes the pistons to spend less time dwelling at the bottom of the stroke than a conventional crankshaft. So my previous calculations stand: The engine has about 190 PSI Brake Mean Effective Pressure. The piston speed is around 4950 feet per minute, which is highly stressful on this version of the engine. 2500 RPM is all the faster this version of the engine can turn. The piston acceleration may be MORE than 135,000 feet per second per second on the upstroke, less on the downstroke. None of this is meant to say that an OX-2 engine cannot be designed to operate at a less highly stressed level, while putting out less power. But this appears to be a hot rod version to impress potential companies who might license the OX-2. Any engine company would do that to sell their licenses. And nobody can deny that some companies are impressed. I am looking forward to learning more about the induction and exhaust systems of the OX-2. I am glad that you brought it to my attention. Thanks.

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