IMPROVED OPPOSED PISTON ENGINE
First Claim
1. An opposed piston engine comprising:
- at least one cylinder;
at least two pistons arranged to be reciprocated within the same cylinder in an opposed manner;
at least one intake port through the cylinder wall;
at least one exhaust port through the cylinder wall;
at least one shaft arranged to be rotated by reciprocal motion of the opposed pistons;
at least one linear reciprocatable sleeve valve positioned within the cylinder and surrounding at least one of the at least two pistons;
a sleeve valve driving mechanism for controlling linear reciprocal motion of the at least one sleeve valve so as to control porting of one or both of the at least one intake port and the at least one exhaust port; and
a dwell mechanism;
wherein the dwell mechanism is configured to induce at least one period of dwell of the at least two pistons during their respective cycles of piston motion.
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Accused Products
Abstract
The invention relates to an opposed piston engine comprising at least one cylinder, at least two pistons arranged to be reciprocated within the same cylinder in an opposed manner, at least one intake port through the cylinder wall, at least one exhaust port through the cylinder wall, at least one shaft arranged to be rotated by reciprocal motion of the opposed pistons, at least one reciprocatable sleeve valve within the cylinder for controlling porting of one or both of the at least one intake port and the at least one exhaust port, a sleeve valve driving mechanism for controlling reciprocal motion of the at least one sleeve valve, and a dwell mechanism. The dwell mechanism is configured to induce at least one period of dwell of the at least two pistons during their respective cycles of piston motion.
18 Citations
43 Claims
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1. An opposed piston engine comprising:
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at least one cylinder; at least two pistons arranged to be reciprocated within the same cylinder in an opposed manner; at least one intake port through the cylinder wall; at least one exhaust port through the cylinder wall; at least one shaft arranged to be rotated by reciprocal motion of the opposed pistons; at least one linear reciprocatable sleeve valve positioned within the cylinder and surrounding at least one of the at least two pistons; a sleeve valve driving mechanism for controlling linear reciprocal motion of the at least one sleeve valve so as to control porting of one or both of the at least one intake port and the at least one exhaust port; and a dwell mechanism; wherein the dwell mechanism is configured to induce at least one period of dwell of the at least two pistons during their respective cycles of piston motion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24, 25, 26, 28, 30, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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- 17. An opposed piston engine according to claim 17, wherein the piston cam mechanism includes one or more piston cams for each piston and one or more cam followers coupled to each of the pistons which remain in contact with the cam surface of the respective one or more piston cams for each piston during the cycle of piston movement.
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43. An opposed piston engine substantially as hereinbefore described with reference to the accompanying drawings.
Specification