engine
JP1816368SActive Publication Date: 2026-01-13樱井正夫
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Patent Information
- Application Number
- JP2025014306D
- Authority / Receiving Office
- JP · JP
- Patent Type
- Designs
- Current Assignee / Owner
- Filing Date
- 2025-06-19
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2050-06-19
Smart Images

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Abstract
With the rotary valve intake system of a two-stroke engine, the intake timing is determined by the size and position of the fan-shaped notch and intake port of the rotary valve, which is attached to the crankshaft or to a shaft that rotates in perfect sync with the crankshaft via gears, a timing belt, etc. Therefore, it cannot be said that the engine is operating in an optimal intake state across the entire rotation range. This device is a device that can vary the intake timing to solve this problem. For reference, we have provided an image of the device installed in an engine.
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