Internal combustion engine
AssigneeJoost Engines Ltd
InventorOliver Jukes
Life of this patent
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Abstract
An internal combustion engine has at least one piston configured to reciprocate within a combustion chamber. The engine has a transfer port, and exhaust port and a secondary port which may be adapted as either a secondary air transfer port, a secondary exhaust port, or as a two-way port acting selectively as i) an air transfer port and ii) an exhaust port. The engine may operate on a two stroke cycle. The engine may be for use submerged in a body of water, e.g. in an outboard motor, and with a cowling defining a volume near an outer wall of the combustion chamber. The volume can be selectively filled with water or exhaust gas for engine temperature optimisation.
Claims37
1-52. (canceled)
An internal combustion engine comprising:
- a pair of pistons in an opposed piston arrangement and a combustion chamber shared by the pair of opposed pistons, the pistons are configured to reciprocate within the combustion chamber,
- wherein the combustion chamber has a two-way port configured to selectively convey exhaust gas away from the combustion chamber, or to convey intake air into the combustion chamber.
An internal combustion engine according to 68, wherein the throttle valves are configured to open and close simultaneously.
An internal combustion engine comprising:
- at least one piston configured to reciprocate within a combustion chamber, wherein the combustion chamber has:
- a primary exhaust port having a substantially open configuration for carrying exhaust gas away from the chamber and a substantially closed configuration wherein exhaust gas substantially cannot pass through the primary exhaust port;
- and a secondary exhaust port configured to convey exhaust gas away from the combustion chamber when the primary exhaust port is substantially closed.
An internal combustion engine comprising:
- at least two pistons configured in an opposed piston arrangement to reciprocate within a common combustion chamber,
- a transfer port generally adjacent a first end of the combustion chamber and configured to provide an air and fuel mixture to the chamber,
- an exhaust port generally adjacent a second end of the combustion chamber generally opposite the first end and configured to convey exhaust gas away from the chamber,
- and a secondary transfer port located generally adjacent the second end of the combustion chamber and generally opposing the exhaust port,
- wherein the secondary transfer port is configured to induct air into the combustion chamber.
Dependencies are inferred from the claim text.