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Optimized internal combustion engine piston top structure

An optimized structure and piston top technology, applied in the direction of pistons, mechanical equipment, engine components, etc., can solve problems such as poor squeeze flow strength and weak direction of flow field in the engine cylinder, and achieve increased mixing speed, shortened combustion time, The effect of improving efficiency

Inactive Publication Date: 2015-04-08
CHONGQING PUSH MECHANISM
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] At present, the piston tops of general internal combustion engines are designed with a flat top surface. The flat top surface design has a weak guide for the flow field in the engine cylinder. Under the same compression ratio, the squeeze flow strength at the top dead center is not good.

Method used

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  • Optimized internal combustion engine piston top structure
  • Optimized internal combustion engine piston top structure
  • Optimized internal combustion engine piston top structure

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the embodiments and accompanying drawings.

[0014] like figure 1 and figure 2 The shown optimization structure of a piston top surface of an internal combustion engine comprises a piston body 1, a combustion chamber 2 recessed into the piston body 1 is provided at the top of the piston body 1, and a ring guide is provided near the edge of the piston body 1 top surface. Flow surface 3, the flow guide surface 3 is arranged obliquely, and the outside is low and the inside is high, the inside of the flow guide surface 3 extends to the inner wall of the combustion chamber 2, and the outside of the flow guide surface 3 extends to the outside of the piston body 1 wall.

[0015] See figure 2 : The included angle between the diversion surface 3 and the horizontal plane is 3-5°.

[0016] See image 3 and Figure 4 : Use the three-dimensional flow field combustion simulation software converge to sim...

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Abstract

The invention discloses an optimized internal combustion engine piston top structure comprising a piston. A concave combustion chamber is arranged on the piston top, and a circle of a flow guide surface is obliquely arranged on the piston top adjacent to the edge and is provided with the lower exterior and the high interior. Thus, the piston top is capable of guiding the flow and oblique as designed, the machining and manufacturing process is simple, the cylinder internal flow field strength can be increased by 8% around under the same compression ratio, the flame transmission or fuel and gas mixing speed of the internal combustion engine is increased significantly, the combustion time is shortened, the isopycnal level is raised, and the efficiency of the engine is improved.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engines, and in particular relates to an optimized structure for the piston top surface of an internal combustion engine. Background technique [0002] At present, the piston crowns of general internal combustion engines are designed with a flat top surface. The flat top surface design has weak guidance for the flow field in the engine cylinder. Under the same compression ratio, the squeeze flow strength at the top dead center is not good. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides an optimized structure of the piston top surface of an internal combustion engine that can strengthen the strength of the flow field in the cylinder of the internal combustion engine to achieve better combustion and more uniform mixing. [0004] Its technical scheme is as follows: [0005] An optimized structure for the piston top surf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F3/00
CPCF02F3/28F02F3/26F02F2003/0007
Inventor 唐中
Owner CHONGQING PUSH MECHANISM
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