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Flame-ejecting sparking plug and internal combustion engine and automobile therewith

A technology for spark plugs and internal combustion engines, which is applied to spark plugs, electrical components, circuits, etc., can solve the problems of complex fuel supply systems and increased costs, and achieve the effects of improving thermal power conversion efficiency, thermal efficiency, and ignition intensity.

Inactive Publication Date: 2017-11-07
周向进
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this engine is the complexity of the fuel supply system and the increased cost

Method used

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  • Flame-ejecting sparking plug and internal combustion engine and automobile therewith
  • Flame-ejecting sparking plug and internal combustion engine and automobile therewith
  • Flame-ejecting sparking plug and internal combustion engine and automobile therewith

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] Embodiment 1: The parameters of a typical flame-injecting spark plug are Figure 3A and Figure 3B For example, Figure 3AThe effective volume in the semi-closed cavity 21 shown is 0.6 cubic centimeters. The number of spray holes on the end surface is 7 (including 1 central spray hole 24), and the hole shape is circular. The injection angle of the central injection hole 24 is zero. The radial injection angles of the other six end face spray holes 18 are 30 degrees, and the oblique angles in the circumferential direction are 20 degrees. The total area of ​​the end surface nozzle hole 18 and the center nozzle hole 24 is 25% of the circular cross-sectional area of ​​the inner volume of the cavity (corresponding to the end surface). The number of side spray holes 17 is 2, symmetrically distributed, the hole shape is circular, and the aperture is 2 / 3 of the end face spray holes. The radial injection angle of the side spray holes 17 is 45 degrees, and the circumferential ...

Embodiment 2

[0088] Example 2, Figure 2A The central electrode 23 is hidden inside the housing 22 of the semi-closed cavity 21, which is the same as the semi-exposed and semi-exposed central electrode 23 of Fig. 3A Figure 4A Compared with the bare center electrode 23, the direct ignition of the combustible gas in the combustion chamber by the electrode spark is avoided. The ignition action is divided into two parts, one is that the electrode spark ignites the combustible gas in the semi-closed cavity 21, and the other is that the combustible gas in the semi-closed cavity 21 burns and ejects out of the semi-closed cavity 21, which has an impact on the combustion chamber and the cylinder. Combustible gases in the fire are ignited. Like this, the time interval that combustible gas is ignited at the top and the bottom of the combustion chamber and even the depth of the cylinder is shortened. The disadvantage is that the combustible gas concentration near the electrode is greatly affected b...

Embodiment 3

[0089] Example 3, Figure 4A In the shown spark plug, the position of the positive and negative electrodes (23 and 22) is at the edge of the junction between the semi-closed cavity 21 and the combustion chamber (this edge just happens to be the gap position between the positive and negative electrodes, and it is also the position of the annular injection hole 26. Position), exposed outside the semi-closed cavity 21, the combustible gas concentration and air-fuel ratio around the electrode are the same as most areas of the combustion chamber, the reliability of electrode ignition is hardly affected by the diffusion of combustible gas into the semi-closed cavity 21 Impact. In addition to being suitable for general internal combustion engine ignition requirements, this spark plug is more suitable as an ignition device for a lean-burn engine, such as an ignition device for a homogeneous compression ignition gasoline engine (HCCI).

[0090] When the homogeneous compression ignitio...

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Abstract

The invention discloses a flame-ejecting sparking plug and an internal combustion engine and automobile therewith. On the basis of a conventional sparking plug, a space nearby an electrode is closed to form a cavity. An end face is provided with a plurality of small holes, and a side surface is provided with two or more small holes. The mixture of air and fuel enters the cavity through the small holes, and the discharge happens between the electrodes to generate sparks to ignite the combustible gas in the cavity. The flame in the cavity extends, and the temperature and pressure are increased. The flame is ejected from the small holes to form a plurality of flame cylinders, and passes through a combustor and the combustible gas in a cylinder, thereby achieving the multi-point ignition, large-area ignition and high-energy ignition of the combustible gas. The internal combustion engine employing the sparking plug is high in combustion speed, can employ the layering combustion technology and the lean-burn technology, and is not liable to generate knock while increasing the compression ratio of the cylinder. The conversion efficiency of heat into power of an engine can be expected to increase by 20%-30%, and the requirements for the octane number of gasoline are reduced. Compared with a conventional internal combustion engine automobile, the automobile employing the internal combustion engine can save gasoline by 20%-30%.

Description

technical field [0001] The invention belongs to the technical field of automobiles and internal combustion engines in the machinery and electronics industry. Background technique [0002] Internal combustion engines are generally composed of cylinders, pistons, connecting rods, crankshafts, valves, oil pumps, oil nozzles and other major components and other accessories. Some internal combustion engines can omit the valve, and utilize the different positions of the piston in the cylinder to switch the intake passage and the exhaust passage. [0003] The existing internal combustion engine ignition device is mainly a spark plug, which ignites the oil-air mixture through an electric spark, and the ignition source is a point. The size of the ignition intensity affects the speed of combustible gas combustion. [0004] The spark plug structure of the plasma ignition device is an electrode in the middle, and there are 4 electrodes around the middle electrode. It is said that the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01T13/20H01T13/02H01T13/54
CPCH01T13/02H01T13/20H01T13/54H01T13/32H01T13/467
Inventor 周向进
Owner 周向进
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