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US 2022/0186650 A1Published application
Outboard motor catalytic converter
AssigneeHonda Motor Co., Ltd.
InventorTatsuya Kuroda
Life of this patent
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Abstract
An outboard motor catalytic converter that can downsize an outboard motor by making a space, where catalysts are installed, small and can ensure efficient reaction of the catalysts. The outboard motor catalytic converter includes exhaust pipes that are connected to exhaust manifolds of an engine of the outboard motor. Catalysts are installed inside the exhaust pipes, and at least a portion of each of the exhaust pipes, which corresponds to a place where the catalysts are installed, is formed to have a double structure constituted of an inner pipe and an outer pipe.
Claims10
An outboard motor catalytic converter comprising:
- an exhaust pipe that is connected to an exhaust manifold of an engine of an outboard motor, wherein
- inside the exhaust pipe, a catalyst is installed, and at least a portion of the exhaust pipe where the catalyst is installed is formed to have a double structure constituted of an inner pipe and an outer pipe,
- the outer pipe has a thickness, and the inner pipe is formed to have a thickness that is smaller than the outer pipe thickness, and
- the outboard motor catalytic converter comprises, at an exhaust port of the exhaust pipe, a watering inhibition mechanism formed of a plurality of plates extending along a peripheral surface downwardly and toward a center of the exhaust pipe.
1 more element
(canceled)
Dependencies are inferred from the claim text.