A low-emission methanol engine combustion chamber structure

By introducing a centrifugal impeller and a multi-stage airflow disturbance structure into the combustion chamber of the methanol engine, the problems of uneven mixing of methanol and air and incomplete combustion have been solved, resulting in more efficient combustion and reduced emissions.

CN122304858APending Publication Date: 2026-06-30XIANGYANG PUCHUANG ELECTRICAL & MECHANICAL EQUIPMENT ENGINEERING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIANGYANG PUCHUANG ELECTRICAL & MECHANICAL EQUIPMENT ENGINEERING CO LTD
Filing Date
2026-05-15
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing methanol engine combustion chamber structures suffer from uneven mixing of methanol and air, and incomplete combustion. This is especially true under high load and high speed conditions, where the mixing time is shortened and the tumble intensity is reduced, leading to uneven mixing.

Method used

It employs components such as a centrifugal impeller and annular flywheel inside the cylinder. The piston and centrifugal impeller are driven to rotate by the explosive airflow, realizing the active mixing of methanol and air. Combined with multiple guide channels and flow-breaking cones, multiple airflow disturbances and mixing are formed to ensure that methanol and air are fully mixed.

Benefits of technology

It achieves uniform mixing and complete combustion of methanol and air, improves combustion efficiency, reduces emissions of unburned methanol, and enhances engine power performance.

✦ Generated by Eureka AI based on patent content.

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Abstract

This application relates to the field of new energy internal combustion engines, specifically disclosing a combustion chamber structure for a low-emission methanol engine. The structure includes a cylinder, with a cylinder head for intake, exhaust, and ignition. Inside the cylinder are: a piston, movably disposed within the cylinder; an annular receiving groove, coaxially disposed on the inner wall of the cylinder near the cylinder head; and a gas mixing mechanism disposed within the annular receiving groove. The gas mixing mechanism includes: a centrifugal impeller, coaxially and spaced apart within the annular receiving groove, and coaxially disposed outside the piston. Inside the cylinder, the explosive gas flow generated by the ignition and explosion of methanol can drive the piston to move and drive the centrifugal impeller to rotate, enabling the centrifugal impeller to actively mix the methanol and air injected into the cylinder next time during its inertial rotation. This application has the effect of making the methanol and air mix more evenly and achieving more complete combustion.
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