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Variable compressing piston

A piston, variable technology, applied in the direction of piston, internal combustion piston engine, engine ignition, etc., to improve low-speed torque, increase medium and high-speed power, and reduce fuel consumption

Inactive Publication Date: 2017-08-04
林培青
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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

[0055] 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.

[0056] 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 relates to a variable compressing piston. An arc surface of the variable compressing piston and an arc surface of a combustion chamber of a cylinder head are arc-shaped; a second combustion chamber is formed by the arc surface of the variable compressing piston; the second combustion chamber and the combustion chamber of the cylinder head jointly apply work; a telescopic rod is protruded from the inner surface of the variable compressing piston; and external threads are designed on an outer circle of the telescopic rod, a through hole is formed in the inner circle of the telescopic rod, and an oil injection nozzle seat is designed. The position of an oil injection nozzle can move along with the position of the variable compressing piston, but the oil injection position of the oil injection nozzle is always maintained in the central position of the second combustion chamber of the variable compressing piston or is kept in the same original position as a variable telescopic piston; and therefore, the design has the beneficial effects that when the variable compressing piston is expanded and contracted, the oil injection position of the second combustion chamber is always kept in an origin, so that improvement of the detonating pushing efficiency of a combustible gas mixture of the second combustion chamber of the variable compressing piston is facilitated.

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): F02F3/00F02D43/00F02D15/04F02D41/40F02P5/152F02B23/10
CPCF02B23/10F02D15/04F02D37/02F02D41/401F02D2200/101F02D2200/602F02F3/00F02P5/152Y02T10/12
Inventor 林培青
Owner 林培青
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