RU30400U1 - Spark ignition device - Google Patents

Description

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Spark ignition device

The utility model is an electric spark ignition device with a high-frequency ignition coil and can be used in prestarting engine heaters and car interior heaters.

A device for electric spark ignition, comprising a fuel nozzle, a switch with a low voltage supply, an ignition coil with high voltage leads connected to the terminals of the spark plugs, a bracket with a nut for attaching the latter to a screw mounted on the fuel nozzle (1).

In such a device, a switch with a low-voltage supply and an ignition coil with high-voltage leads are located at some distance from the terminals of the spark plugs, have high-voltage wires of long length located outside the heater, which complicates the design of the device and the safety of maintenance, leading to a significant drop

MKI F02P 3/08

voltage in high-voltage wires and, as a result, leads to a decrease in reliability.

The closest in technical essence and the achieved effect is an electric spark ignition device containing a fuel nozzle, a switch with a low voltage supply, an ignition coil with high voltage leads connected to the terminals of the spark plugs, a bracket with a nut for fastening the latter to a screw mounted on the fuel nozzle, ( 2).

In this device, a switch with a low-voltage supply and an ignition coil with high-voltage leads are located at some distance from the terminals of the spark plugs, have high-voltage wires of great length, located outside the heater, which complicates the design of the device and the safety of maintenance, leads to a significant voltage drop in the high-voltage wires and, as a result, leads to a decrease in reliability. The above disadvantages make it difficult to use the known device for prestarting engine heaters and car interior heaters.

The inventive utility model is aimed at increasing the reliability of the device by reducing the voltage drop in

HIGH VOLTAGE WIRES AND SIMPLIFIED DESIGN.

The above technical result is achieved in that in an electric spark ignition device containing a fuel nozzle, a switch with a low voltage supply, an ignition coil with high voltage leads connected to the terminals of the spark plugs, a bracket with a nut for fastening the latter to the screw,

mounted on the fuel nozzle, the switch with the ignition coil are combined in one housing having conductive expandable elements of high voltage leads and an eye with a hole, the housing being installed with its expandable elements directly on the terminals of the spark plugs, and the screw is extended, it enters the hole of the eye with an additional nut fixes the housing relative to the fuel injector.

The utility model is illustrated by the drawings in FIG. 1-4. In FIG. 1 general view of the device. FIG. 2 is a view A of FIG. 1. In FIG. 3 is a general view of the housing of the device of FIG. 1. In FIG. 4 is a view B of the housing of the device of FIG. 3.

The spark ignition device comprises a housing 1 in which are located a switch with a low voltage supply 2 for communication with a car electric circuit and an ignition coil with conductive expandable elements of high voltage leads 3 directly wrapping terminals 4 of the spark plugs 5. A bracket 6 with a nut 7 secures the spark plugs 5 to the screw 8 mounted on the fuel nozzle 9. The screw 8 is extended, it enters the hole 10 of the eye 11 of the housing 1 and, using an additional nut 12, fixes the housing 1 relative to the fuel nozzle 9. 5 chi ignition end electrodes 13.

Device spark ignition works as follows. When the output transistor of the pulse shaper is locked through a switch with a low-voltage supply 2 from the vehicle circuitry, a voltage level is formed in the primary winding of the ignition coil, an electromotive self-induction force appears, then at the terminals of the secondary

The winding of the ignition coil develops a high voltage, which, through the conductive expanding elements of the high voltage terminals 3 and the terminal 4 of the spark plugs 5, provides an electric discharge in the gap between the electrodes 13.

The absence in the proposed device of high-voltage wires for connecting the high-voltage leads of the ignition coil to the terminals of the spark plugs does not lead to a voltage drop in them, to

possible violation of insulation and injuries, simplifies the design.

Laboratory and operational tests of the device, carried out by NPF Mega-K, showed the competitiveness of the prototypes, their increased reliability in the systems of engine preheaters and car interior heaters.

Sources of information

1. Independent engine pre-heaters and heaters for car interiors of the Eberspacher company (Germany). Liquid heater D 10 W.

2. Pre-start liquid heaters (heaters) for vehicles (15.8106-01) and torch heaters for road-building equipment (144.8106). Group of enterprises “Eltra, Rzhev.

Claims (1)

An electric spark ignition device comprising a fuel nozzle, a switch with a low voltage supply, an ignition coil with high voltage leads connected to the terminals of the spark plugs, a bracket with a nut for fastening the latter to a screw mounted on the fuel nozzle, characterized in that the switch with the ignition coil are combined into one housing having conductive expandable elements of high voltage leads and an eye with an opening, the housing being mounted with its expandable elements directly on the terminals spark plugs, and the screw is elongated, enters the eyelet hole and, with the help of an additional nut, fixes the housing relative to the fuel nozzle.