摘要:
In a double-ended barrel engine, a compression cylinder (3) and a combustion cylinder (2) share a common axis, with a combustion piston (20) and a compression piston (21) being interconnected by a connecting rod (22). The compression end of the engine includes a valve plate assembly with a generally flat valve plate (6) with intake and exhaust passages defined therethrough. An intake flapper valve (8) is disposed on the inner surface of the valve plate and selectively covers the intake passage. An exhaust flapper valve (8) is disposed on the outer surface of the valve plate and selectively covers the exhaust passage. Additional cylinders and pistons may be provided. A compression plenum may be provided in fluid communication with the exhaust passages from one or more compression cylinders, and be in fluid communication with the intake system for the combustion end of the engine. A wastegate (14) may be provided for venting the compression plenum.
摘要:
An internal combustion barrel engine (70) includes an engine housing with a first and second end. An elongated power shaft (80) is longitudinally disposed in the engine housing and defines a longitudinal axis. A combustion cylinder (72) and a guide cylinder (74) are spaced apart and disposed on a common cylinder axis that is generally parallel to the central axis. The cylinders (72, 74) each have an inner end and an outer end, with the inner ends being closer to each other. The outer end of the combustion cylinder is closed. An intake system is operable to introduce a mixture of air and/or fuel into the combustion cylinder (72). A track (78) is supported between the inner ends of the cylinders and has an undulating cam surface. The track (78) is moveable such that the portion of the cam surface most directly between the cylinders undulates toward and away from the inner end of the combustion cylinder. A double-ended piston (50) includes a combustion end (52) disposed in the combustion cylinder (72) so as to define a combustion chamber between the combustion end and the closed end of the combustion cylinder. A guide end (54) is disposed in the guide cylinder (74). A midportion (56) extends between the combustion end (52) and the guide end (54) and is in mechanical communication with the guide surface of the track. A variable compression ratio device is operable to move the track axially towards and away from the inner end of the combustion cylinder (72) so as to adjust the combustion ratio. Combustion occurs only in the combustion cylinder (72) and does not occur in the guide cylinder (74).