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Air cylinder head variable in compression ratio

A cylinder head and compression ratio technology, which is applied in the field of gasoline engines to achieve the effects of increasing medium and high-speed power, increasing low-speed torque and prolonging service life

Inactive Publication Date: 2017-08-11
林培青
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Air cylinder head variable in compression ratio
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  • Air cylinder head variable in compression ratio

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Embodiment Construction

[0043] 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.

[0044] An engine with electronically controlled variable compression ratio and fuel injection position, which includes a variable compression ratio mechanism capable of changing the mechanical compression ratio, and a fuel injection nozzle 810 that works synchronously with the telescoping mechanism, and makes the engine run at low load The compression ratio of the engine is completely different from the compression ratio and fuel injection position when the engine i...

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Abstract

The invention provides an air cylinder head variable in compression ratio. The air cylinder head comprises a hydraulic cavity. The hydraulic cavity is connected with an oil inlet nozzle. The air cylinder head is provided with a sliding hole which is used for allowing a telescopic rod to be inserted, and a motion track of a variable compression piston is balanced with that of the air cylinder head. The position, close to a combustion chamber, of the hydraulic cavity is used for installing a motor and the variable compression piston. An oil injection nozzle moving synchronously with the variable compression piston is installed on the variable compression piston. The oil injection position is changed along with the change of the compression ratio, the effect that combustible mixed gas in a second combustion chamber of the variable compression piston is consistent during different positions is achieved through the effect produced by the change of the oil injection position, the work at the ignition time is assisted so that different compression ratios and different oil injection positions during different engine loads and different engine rotation speeds can be met, and thus the power and the impetus of an engine are improved by improving the combustion efficiency of fuel oil.

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): F02D15/00F02F1/24F02F3/00
CPCF02D15/00F02F1/24F02F3/00
Inventor 林培青
Owner 林培青
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