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A piston and engine

A technology of piston and piston body, applied in the field of engine, can solve the problems of unsatisfactory fuel economy of engine thermal efficiency and engine.

Active Publication Date: 2022-06-07
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a piston and an engine, which can improve the thermal efficiency of the engine and the unsatisfactory fuel economy of the engine due to the structure of the combustion chamber

Method used

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  • A piston and engine
  • A piston and engine
  • A piston and engine

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Embodiment Construction

[0042]The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] The existing combustion chamber can effectively organize the mixture of oil and gas inside the combustion chamber, but the utilization rate of the air in the peripheral area of ​​the combustion chamber is very low. If the outer edge of the combustion chamber is made as close to the outer edge of the piston as possible by increasing the diameter of the existing combustion chamber at the top surface of the piston, it will inevitabl...

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Abstract

The invention relates to the technical field of engines, and discloses a piston and an engine. The piston includes a piston body with a combustion chamber on the top. The first ring groove, the second ring groove and the third ring groove, the bottom is provided with a raised part, the first ring groove, the second ring groove and the third ring groove are coaxial and communicate with each other, and they are all arranged around the raised part ; The second annular groove includes an annular outer wall and a bottom wall located on the inner side of the outer wall and connected to the outer wall, and a boss is formed between the bottom wall and the first annular groove; the third annular groove includes an arc-shaped concave surface, and the arc The inner end of the concave surface is connected to the end of the outer wall away from the bottom wall, and the outer end of the concave surface is connected to the top surface of the piston body; during the operation of the engine, an air interlayer can be formed between the concave surface and the mixture. The piston and the engine improve the problem of unsatisfactory fuel economy of the engine.

Description

technical field [0001] The present invention relates to the technical field of engines, in particular to a piston and an engine. Background technique [0002] The engine is an important part of the power plant such as the vehicle, and the combustion chamber is one of the core components of the engine. The structure of the combustion chamber plays an important role in the thermal efficiency of the engine and the fuel economy of the engine. [0003] In recent years, with the enhancement of people's awareness of environmental protection, various car companies have paid more and more attention to the thermal efficiency of the engine and the fuel economy of the engine. However, in the prior art, it is limited by the structure of the combustion chamber, the thermal efficiency of the engine and the Fuel economy isn't ideal yet. [0004] Therefore, it is urgent to design a new combustion chamber structure to improve the above problems. SUMMARY OF THE INVENTION [0005] The inve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02F3/26
CPCY02T10/12F02F3/26F02B23/06
Inventor 窦站成崔京朋梁伟刘近报李志杰王德成
Owner WEICHAI POWER CO LTD
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