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

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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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