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Join Date: Jul 2000
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My former company has 2 compressor designs which has horizontal opposed cylinders, to reduce the force couple. It used a 3 rod design, of which 2 were split. They were considering going to a 4 rod, double split design, so that more of the parts would be common.

The real savings is in the foundation for a compressor, since you don't have to deal with that force couple from the offset crank. It would also help in a car engine, with the reduction in weight of the block and in the less vibration transmitted to the frame. I'm not sure why they think the design would be 40% thermally efficient.
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The pessimist complains about the wind; the optimist expects it to change; the engineer adjusts the sails.- William Arthur Ward (1921-1994)
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Old 03-13-2009, 06:05 PM
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