Exhaust port structure of engine
The exhaust port structure with a protruding rib effectively guides condensed water away from the exhaust valve, addressing corrosion and wear issues by utilizing the engine's exhaust flow, enhancing durability and reducing maintenance.
JP2025154004APending Publication Date: 2025-10-10SUZUKI MOTOR CORP
Patent Information
- Application Number
- JP2024056765
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2025-10-10
Smart Images
Figure 2025154004000001_ABST
Abstract
To provide an exhaust port structure of an engine capable of quickly guiding condensed water generated in an exhaust port to a position away from an exhaust valve, to prevent corrosion and wear of the exhaust valve.SOLUTION: Protruding ribs 10 that protrude inward of an exhaust port 5 are formed on inner walls 5A, 5B of the exhaust port 5. The protruding ribs 10 extend along the inner walls 5A, 5B of the exhaust port 5 from a lower end part 7A of a valve guide 7 downward and toward a downstream side of the exhaust port 5 in an exhaust flow direction. The exhaust port 5 is curved downstream of the valve guide 7 in the exhaust flow direction. The protruding ribs 10 are arranged along the inner wall 5B outside the curve of the exhaust port 5. The engine 1 uses natural gas as fuel.SELECTED DRAWING: Figure 1
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Citation Information
Patent Citations
Valve structure and internal combustion engine
JP2021017829A