Combustion chamber for two-stroke engines

A combustion chamber and engine technology, applied to engine components, combustion engines, machines/engines, etc., can solve problems such as poor combustion of combustible gas, achieve the effects of reducing escape, clean emissions, and improving combustion efficiency

CN102392729AActive Publication Date: 2012-03-28苏州圣雷动力机械有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2012-03-28

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Abstract

The invention discloses a combustion chamber for two-stroke engines, which is characterized in that in a cylinder body, the combustion chamber is composed of a sparking plug, a piston and the top part of the cylinder body; the top part of the cylinder body comprises a cylinder top (in the shape of a convex curved surface) away from the gas-outlet side and a cylinder top (in the shape of a concavecurved surface) close to the gas-outlet side; through selecting any point A on the convex curved surface and taking the axis of the piston as a symmetry axis, a point on the concave curved surface and symmetrical with the point A is a point B, and the distance between the point A and the top surface of the piston is less than the distance between the point B and the top surface of the piston; andbecause the point A is selected arbitrarily, any two points which are on the curved surfaces of the cylinder tops and symmetrical about the axis of the piston have the features. By using the structure, the combustion efficiency of combustible gas can be effectively improved, the escape of the combustible gas can be reduced, and emission gas is cleaner.
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Description

technical field

[0001] The invention relates to a combustion chamber of a two-stroke engine. Background technique

[0002] In order to make two-stroke engines more fuel-efficient and exhaust emissions cleaner, one of the technical routes adopted in this field at home and abroad is to design and improve the combustion chamber and sweeping exhaust methods of two-stroke engines in order to improve the combustion efficiency of combustible gas and reduce the amount of gas that can be burned. escape of gas.

[0003] When the two-stroke engine is working, its intake, scavenging, compression, combustible gas explosion, exhaust and other processes form a streamline field of airflow (flow trajectory of gas molecules) in the cylinder. as attached figure 1 Shown is the ideal streamline (flow field) shape. If the sweeping and exhaust flow in the cylinder can fully conform to this form, the engine will have good combustion efficiency, and the escape loss of combustible gas will be very...

Examples

Embodiment Construction

[0015] Attached below Figure 1-4 The preferred embodiments of the present invention are described in detail, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0016] A combustion chamber of a two-stroke engine comprises a cylinder block 1 in which a combustion chamber 2 is formed by a spark plug 10, a piston 3 and the top 6 of the cylinder block. The curved surface feature of the cylinder block top 6 is: the shape of the top 6 of the cylinder block away from the exhaust port 11 is a convex curved surface 4, and the shape of the cylinder block top 6 near the exhaust port 11 side is a concave curved surface 5. There is respectively a main scavenging air passage 8 and an auxiliary scavenging air passage 9 on both sides of the cylinder block, and the partition plate 7 completely separates the main scavenging air passage 8 and the ...