Intake system of internal combustion engine
AssigneeNippon Soken, Inc.
InventorsShunzo Yamaguchi, Kenzi Iwamoto
Life of this patent
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Abstract
An intake system for intercommunicating a carburetor and a combustion chamber of internal combustion engines which has a cylinder head, an intake port provided in the cylinder head, an intake valve located in the intake port and an exhaust manifold communicated with the combustion chamber. At least two intake passages are provided to join together at that part in the intake port which is immediately before the intake valve. One of the intake passages passes through the exhaust manifold, whereby the atomized fuel particles in an air-fuel mixture to be sucked in the combustion chamber can be positively vaporized without accompanying high temperature rising of the mixture.
Claims7
An intake system for intercommunicating carburetor means and combustion chamber means of internal combustion engines comprising:
- a cylinder head, intake port means provided in said cylinder head, intake valve means provided in said intake port means, exhaust pipe means, at least two intake passage means joined in that part of said intake port means which is immediately before said intake valve means, one of said intake passage means passing through said exhaust pipe means, and an oxidation catalyst disposed in that part of one said intake passage means which is within said exhaust pipe means.
An intake system for intercommunicating carburetor means and combustion chamber means of internal combustion engines comprising:
- a cylinder head, intake port means provided in said cylinder head, intake valve means provided in said intake port means, exhaust pipe means, at least two intake passage means joined in that part of said intake port means which is immediately before said intake valve means, one of said intake passage means passing through said exhaust pipe means, an enlarged evaporation chamber means provided at that part of one said intake passage means which is within said exhaust pipe means, and an oxidizing catalyst disposed in said evaporation chamber means.
Dependencies are inferred from the claim text.