SU1524121A1 - Surface-discharge ignition plug - Google Patents

Abstract

The invention relates to engine construction and can be used to ignite a combustible mixture in an engine combustion chamber. The purpose of the invention is to improve the reliability and efficiency of ignition of the fuel. The candle contains a housing 1, an insulated 3 and a mass 4 electrodes, and a semiconductor element 5 in the form of a permanent magnet of hard magnetic hexaferrite. The spark channel of the discharge over the surface of the permanent magnet branches into several channels and covers a large surface. 2 hp ff, 4 ill.

Description

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This invention relates to spark plugs for an internal combustion engine, in particular spark plugs with a discharge directed along a nogLgpxHOCTn spark plug.

The aim of the invention is to increase the reliability and efficiency of ignition of the fuel.

Fig. 1 shows a candle, longitudinal section; FIG. 2 is a cross section A-A in FIG. 1; Fig, 3 - candle on the electrodes, a longitudinal section; FIG. 4 is a cross-section BB in FIG. 3

The candle includes a housing 1 with fixed on it with screws 2 insulated 3 and mass 4 electrodes. A semiconductor ceramic element 5 made of magnetically hard magnetized hexaferrite is a permanent magnet. The ceramic insulator 6 forms a cylindrical channel 7 extending into the engine combustion chamber 8, the conductive rod 9 and the ceramic insulator 10 are fixed in the housing 1 by means of a nut 11, the fuel nozzle 12 ycj is inserted into the housing 1 and the gasket 13 The electrode part of the device is covered by a ceramic insulator 14 installed in the engine housing 15. The body 1 of the candle is pressed to the body 15 of the engine through the gasket 16 and the insulator 14 by means of studs 17, washers 18 and nuts 19, High-voltage insulated conductor 20 is connected to the current lead rod 9 by means of a nut 21, Semiconductor ceramic element 5 has a surface 22 discharge, placed between the electrodes 3 and 4, the Surface

22 The size is made concave cylindrical,

In an embodiment of the candle configuration according to FIG. 3 and 4 between the electrodes 3 and 4 and the surface 23 of the discharge there is a jumper 24 of semiconductor ceramics 0.5 to 3 mm thick, and the surface

23dit is made closed, the candle of burning works as follows

in the way

At the required time, the nozzle 12 injects fuel into the chamber 8 of the burner. The air mixture forming the fuel fills the cylindrical channel 7, after which a high voltage is applied to the insulated electrode 3. A spark discharge arises across the surface of discharge 22 and 23 between electrodes 3 and 4. The spark discharge spans an arc-air mixture on two opposite sides of channel 7 and ignites it at several points simultaneously. The resulting source of combustion exits the cylindrical channel into the combustion chamber 8. The spark channel of discharge along the surface of the 22 hexafer Rita branches into several channels and covers a large surface.

When electrodes 3 and 4 are recessed relative to the surface 23 (FIGS. 3 and 4), the discharge channel 24, having a thickness of 0.5–3 mm, is ejected at the discharge channel at any point opposite the electrode, which increases reliability, since electrodes 3 and 4 it does not fade. Making the layer thicker than 3 mm leads to a significant voltage drop on the ohmic resistance of the material; making the layer less than 0.5 mm causes technological difficulties.

The implementation of the spark plug according to the invention will improve the reliability and efficiency of ignition of the fuel mixture and increase the completeness of fuel combustion.

Claims (1)

Invention Formula 1, a spark plug of a surface array, comprising a housing, electrodes isolated from the housing, and a semiconductor element disposed between the electrodes, having a discharge surface, characterized in that that, in order to increase the reliability and efficiency of ignition of the fuel, the semiconductor ceramic element is made in the form of a permanent magnet of hard magnetic hexaferrite. 2, Candle according to claim 1, characterized in that the discharge surface of the semiconductor element is made concave cylindrical, 3, Candle according to claim 1, characterized in that the discharge surface is made closed, and the electrodes are separated from the discharge surface by bridges of semiconductor ceramics. Editor G. Gerber Compiled by V. Chekmazov Tehred M. Khodanych Order 7052/54 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 15 fieL Corrector S.Cherni Circulation 616 Subscription