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Piston with variable compression ratio

A compression ratio and piston technology, which is applied to pistons, internal combustion piston engines, engine sealing devices, etc., to achieve the effects of reducing fuel consumption, increasing medium and high speed power, and prolonging service life

Inactive Publication Date: 2018-07-31
庄铭钦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

Method used

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  • Piston with variable compression ratio
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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] 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

The invention provides a piston with the variable compression ratio. According to the piston, the problem of the unified compression ratio of different engine loads in the prior art is solved. According to the technical scheme, an engine with the variable compression ratio comprises a variable compression ratio mechanism capable of changing the mechanical compression ratio, the compression ratio during low-load operation of the engine is completely different from the compression ratio during medium-load and high-load operations of the engine so that requirements for the different compression ratios and ignition time of different engine loads and different engine rotating speeds can be met, and therefore the rate of work and power of the engine are improved.

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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Patent Type & Authority Applications(China)
IPC IPC(8): F02D15/04F02F11/00F02B23/08F02B25/00
CPCF02B23/08F02B25/00F02B75/041F02B75/044F02D15/00F02D15/04F02D43/00F02D2200/101F02D2200/602F02D2700/03F02F1/24F02F3/00F02F3/0015F02F11/00F02P5/045F02P5/06F02P5/14Y02T10/12
Inventor 庄铭钦
Owner 庄铭钦
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