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Piston with variable compression ratio and variable oil injection position

A compression ratio and piston technology, applied in fuel injection devices, internal combustion piston engines, engine components, etc., to achieve the effects of increasing medium and high-speed power, prolonging service life, and improving low-speed torque

Inactive Publication Date: 2018-07-31
NANAN GAOJIE ELECTRONICS TECH
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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 and fuel injection position for different engine loads in the prior art

Method used

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  • Piston with variable compression ratio and variable oil injection position
  • Piston with variable compression ratio and variable oil injection position
  • Piston with variable compression ratio and variable oil injection position

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Embodiment Construction

[0053] 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.

[0054] An engine with variable compression ratio and fuel injection position, which includes a variable compression ratio mechanism that can change the mechanical compression ratio, and an oil injection nozzle 810 that works synchronously with the telescopic mechanism, and enables all The above compression ratio is completely different from the compression ratio and fuel injection position when the engine is running under medium load and high load, so as to realize ...

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Abstract

The invention provides a piston with the variable compression ratio and the variable oil injection position. The piston is characterized in that an arc surface of the variable compression piston formsa second combustion chamber, the second combustion chamber and a combustion chamber of a cylinder head jointly act, a supporting column protrudes from the inner side of the variable compression piston, and at least one oil nozzle hole is formed in the supporting column. According to the piston, the oil spraying position is changed along the state of different compression ratios so that the different compression ratios and the different oil injection positions of different engine loads and different engine rotating speeds can be met, and therefore the combustion efficiency of fuel is improved,and the work rate and the power of an engine are improved.

Description

technical field [0001] The invention relates to a gasoline engine, in particular to an engine which can change the compression ratio and fuel injection position according to the 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 regional gasoline for the sam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D15/04F02M61/14F02B23/10F02B25/00
CPCF02B23/101F02B25/00F02D15/04F02D37/02F02D43/00F02D2200/101F02D2700/03F02M61/14Y02T10/12
Inventor 庄景阳
Owner NANAN GAOJIE ELECTRONICS TECH
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