Outboard motor
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorsKatsumi Ochiai, Koichi Nakayama
Life of this patent
Estimating the term…
Abstract
An exhaust passage of an outboard motor includes a first exhaust passage and a second exhaust passage. The second exhaust passage is positioned on a downstream side of the first exhaust passage. A first honeycomb structure is disposed inside the first exhaust passage. A second honeycomb structure is disposed inside the second exhaust passage. The first exhaust passage and the second exhaust passage are separate and independent members that are connected to each other. A first opening into which the first honeycomb structure can be inserted is provided at an end portion of the first exhaust passage. A second opening into which the second honeycomb structure can be inserted is provided at an end portion of the second exhaust passage.
Claims25
An outboard motor comprising:
- an engine including a plurality of vertically aligned cylinders;
- a propeller shaft driven by a drive force from the engine;
- a plurality of exhaust ports connected to the plurality of cylinders;
- an exhaust passage connected to the plurality of exhaust ports, the exhaust passage being configured to discharge exhaust to an exterior of the engine, the exhaust passage including a first exhaust passage and a second exhaust passage positioned on a downstream side of the first exhaust passage;
- a first honeycomb structure disposed inside the first exhaust passage;
- and
- a second honeycomb structure disposed inside the second exhaust passage;
- wherein
- the first exhaust passage and the second exhaust passage are separate and independent members that are connected to each other;
- a first opening into which the first honeycomb structure can be inserted is provided at an end portion of the first exhaust passage;
- and
- a second opening into which the second honeycomb structure can be inserted is provided at an end portion of the second exhaust passage.
Dependencies are inferred from the claim text.