Crankcase of motorcycle engine
By integrating the waterway and setting up a maze structure in the crankcase of the motorcycle engine, the problem of the motorcycle engine not being compact and the oil and gas separation effect is solved, and the compact design of the engine and efficient oil and gas separation are achieved, reducing production costs and reducing mechanical failures.
CN120273826APending Publication Date: 2025-07-08ZHEJIANG QIANJIANG MOTORCYCLE
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Patent Information
- Application Number
- CN202510241727.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2025-07-08
AI Technical Summary
Technical Problem
The structure of the motorcycle engine is not compact, the external pipeline is complex, the production cost is high, the oil and gas separation effect is poor, and the engine oil is prone to spraying out, resulting in mechanical failure.
Method used
The water circuit is integrated into the crankcase, two sets of oil and gas separation structures are set to reduce external pipelines, and multiple oil and gas separations are used to use a maze structure to control the cooling water circulation with a thermostat.
Benefits of technology
It achieves a compact engine structure, reduces production costs, improves oil and gas separation efficiency, avoids oil injection, and reduces mechanical failures.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to a motorcycle engine crankcase which comprises a crankcase body, a front air cylinder, a rear air cylinder, a liquid inlet cavity, a liquid outlet cavity, an air cylinder water path, a first labyrinth, a second labyrinth and the like. The liquid inlet cavity and the liquid outlet cavity are integrally formed with the crankcase and integrated in the crankcase, so that the whole structure is compact, related pipeline installation is omitted, and the production cost is reduced. The front air cylinder and the rear air cylinder are arranged in a V shape to form an upward V-shaped opening, and the first labyrinth is arranged in the V-shaped opening to fill space, reduce rainwater accumulation and reduce corrosion to a crankcase. The thermostat cavity is arranged between the front cylinder and the rear cylinder, and a water outlet pipe is arranged at the top and communicated with the water tank to participate in engine major cycle. By arranging the first labyrinth and the second labyrinth, oil and gas are separated for the first time and the second time respectively, the oil-gas separation efficiency is improved, and the problems of insufficient mechanical lubrication and faults caused by reduction of engine oil are solved. The engine is compact in structure and reasonable in design, and the performance and reliability of the engine are effectively improved.
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