Dual crankshaft, opposed-piston engine constructions
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United States of America Patent
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Aug 28, 2018
Grant Date -
Nov 15, 2012
app pub date -
Feb 23, 2012
filing date -
Feb 23, 2011
priority date (Note) -
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Abstract
A dual-crankshaft, opposed-piston, internal combustion engine includes one or more ported cylinders. Each cylinder has exhaust and intake ports, and the cylinders are juxtaposed and oriented with exhaust and intake ports mutually aligned. The crankshafts are rotatably mounted at respective exhaust and intake ends of the cylinders and are coupled by a multi-gear train. A pair of pistons is disposed for opposed sliding movement in the bore of each cylinder. All of the pistons controlling the exhaust ports are coupled by connecting rods to the crankshaft mounted near at the exhaust ends of the cylinders, and all of the pistons controlling the intake ports are coupled by connecting rods to the crankshaft mounted near at the intake ends of the cylinders. The crankshafts are connected by a timing belt operative to change the rotational timing between the crankshafts. The gear train support structure is stiffened to suppress gear train vibration.
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