RU2225062C2 - Spark plug body - Google Patents

Abstract

FIELD: spark plugs for internal combustion engines. SUBSTANCE: proposed spark plug has body with internal side electrodes and insulator with central electrode inserted therein. Body has bottom with seven or six holes, 1.5 mm in diameter. Formed between bottom and insulator within body is chamber, 0.9 cu. cm in volume. Spark plug body of proposed design provides for two-stage combustion of working mixture in engine combustion chamber. During first stage spark jumps the gap between electrodes and ignites mixture in mentioned chamber. During second stage pressure rises within this chamber and flame escapes through bottom holes to engine combustion chamber. Such process ensures complete combustion of fuel in engine cylinder. EFFECT: reduced fuel consumption and carbon dioxide content in exhaust gases at any engine speed; enhanced engine power. 3 cl, 5 dwg

Description

 The invention relates to spark plugs for internal combustion engines.

 Known spark plugs produced by industry. The housing of existing industrially produced spark plugs has a threaded portion 19 mm long, designed to screw the spark plug into the engine head. The upper part of the body ends with a collar necessary for rolling the insulator when assembling the spark plug. The housing has six faces for the wrench. A description of such a candle can be found in the book of V.E. Yutt. Electric equipment of cars. - M.: Transport, 1989, p. 182-187.

 The closest analogue of the claimed invention is a spark plug for an internal combustion engine according to German patent 3203874, IPC 3 H 01 T 13/54, publ. 08/18/1983, on the body of which is fixed the bottom. At the same time, an insulator with a central electrode is inserted into the candle body, and a chamber is formed between the bottom and the insulator.

The claimed invention is aimed at solving the problem of complete combustion of fuel in the cylinder of an internal combustion engine. The consequence of solving this problem is to achieve the following technical result: reducing fuel consumption, reducing the CO ₂ content in exhaust gases at any engine speed and increasing engine power.

The essential features necessary to achieve the technical result provided by the claimed invention are the presence of a chamber of 0.9 cm ³ located inside the spark plug housing, which has an internal electrode arrangement and to which the bottom of the housing is attached, having seven or six holes with a diameter of 1.5 mm. These signs are significant and are in a causal relationship with the achieved technical result.

The invention is illustrated by drawings, which depict:
figure 1 - body with side electrodes;
figure 2 - the bottom of the housing with seven holes;
figure 3 - the bottom of the housing with six holes;
figure 4 - shrink washer;
figure 5 - insulator with a central electrode.

 The spark plug body has an internal arrangement of side electrodes fixed by contact electric welding.

 The location and shape of the side electrodes are shown in the drawing of figure 1. The bottom (figure 2 or figure 3) is installed in the housing and attached by resistance welding. Housing with bottom and side electrodes is a single design.

Between the insulator with the central electrode inserted into the housing (Fig. 4) and the bottom, a chamber 1 (Fig. 1) of 0.9 cm ³ volume is formed. Heat shrink washer (figure 4) is worn on the insulator (figure 5) and ensures tightness during operation of the spark plug. The bottom with seven holes (figure 2) is installed in the housing for spark plugs used in internal combustion engines with the location of the spark plug parallel to the piston bottom. The bottom with six holes (figure 3) is installed in the housing for spark plugs used in internal combustion engines with the location of the candle perpendicular to the bottom of the piston.

When using the casing of the spark plug of this design, the ignition of the working mixture in the combustion chamber of the engine occurs in two stages. In the first stage of the electric spark arising between the electrodes, the mixture in the chamber 1 is ignited (Fig. 1). At the second stage in the chamber 1 (Fig. 1), the pressure rises, and through the hole in the bottom (Fig. 2 or Fig. 3), the flame enters the combustion chamber of the engine, which leads to complete combustion of the fuel and a reduction in the time of combustion of the fuel without detonation. This mode of operation of the spark plug leads to a decrease in CO ₂ in the exhaust gases, a reduction in fuel consumption and an increase in engine power.

Claims (3)

1. Spark plug, comprising a housing with an internal arrangement of side electrodes and with an insulator inserted into it with a central electrode and a bottom of the housing, mounted and fixed in the housing, while a chamber is formed between the bottom and the insulator, characterized in that the chamber is 0.9 cm in volume ³ is located inside the housing, and the bottom attached to it has seven or six holes with a diameter of 1.5 mm. 2. The spark plug according to claim 1, characterized in that when it is located in the internal combustion engine perpendicular to the piston bottom, a bottom with six holes is installed in its housing. 3. The spark plug according to claim 1, characterized in that when it is located in the internal combustion engine parallel to the piston bottom, a bottom with seven holes is installed in its housing.

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