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Variable compression piston

A piston, variable technology, applied in the direction of spark plugs, electric spark ignition controllers, engine components, etc., to achieve the effect of extending the service life

Inactive Publication Date: 2017-08-04
石狮市恒鑫电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention proposes a variable compression ratio engine, which solves the problem of uniform compression ratio of different engine loads in the prior art

Method used

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Embodiment Construction

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

[0043] A variable compression ratio engine, which includes a variable compression ratio mechanism capable of changing the mechanical compression ratio, and makes the compression ratio when the engine operates at a low load completely different from the compression ratios when the engine operates at a medium load and at a high load, realizing To meet different compression ratios at different engine loads and different engine speeds. Thus, the service life of the roc...

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Abstract

A variable compression piston, which is characterized in that the front surface of the variable compression piston and the combustion chamber of the cylinder head are arc-shaped, and the front surface of the variable compression piston constitutes the second combustion chamber. The second combustion chamber and the combustion chamber of the cylinder head work together; the periphery of the variable compression piston has at least one annular groove and a telescopic rod protruding from the inner surface, and the outer circle of the telescopic rod is designed with an external thread and an inner circular through hole and designed A spark plug seat, at least two sides of the fox surface of the second combustion chamber are provided with scavenging holes leading to the side of the intake valve and the side of the exhaust valve. In the corresponding position, the spark plug seat moves synchronously with the variable compression piston to ensure that the flame of the spark plug is always kept at the center of the second combustion chamber, which is beneficial to the ignition and propagation of the combustible mixture.

Description

technical field [0001] The present invention relates to a gasoline engine, in particular to an engine whose compression ratio can be changed according to engine load and rotation speed. Background technique [0002] The compression ratio of the engine refers to the ratio of the stroke of the working piston in the cylinder to the combustion chamber. The higher the compression ratio, the better the combustion efficiency. However, the higher the compression ratio, the higher the knocking of the engine, and the easier it is for the cylinder and piston to knock and wear. Especially under high load conditions, the power of the engine will drop instead. [0003] As the grade of gasoline gets higher and higher, the increase of octane number is to reduce the knocking caused by the high compression ratio. However, its effect is limited. It can only be controlled at 13:1. Of course, due to the refining and manufacturing process of gasoline in the same region, the compression ratio of...

Claims

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Application Information

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IPC IPC(8): F02B75/04F02P13/00
CPCF02B75/042F02P13/00
Inventor 庄景阳
Owner 石狮市恒鑫电子科技有限公司
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