SU1126709A1 - Device for checking operation of ignition spark plug - Google Patents

Abstract

A DEVICE FOR THE CONTROL OF A SPARED PLUG FOR IGNITION of an internal combustion engine that contains a high-voltage piezogenerator mounted in a casing with a lever mechanism for quasistationary loading, a discharge indicator equipped with a shunt resistance, and a detachable socket, and an electric cord with a creeper section of a cipher cup. This is due to the fact that, in order to increase the efficiency of the control, the device additionally contains a spark with adjustable spark The gap is electrically connected between the plug connection socket and the housing.

Description

The invention relates to devices for testing and testing ignition systems of internal combustion engines / in particular to devices for monitoring spark plugs.

A device for controlling a spark plug of an internal combustion engine is known, which comprises a high-voltage piezogenerator installed in a housing with a lever mechanism of a quasi-stationary tension of the piezogenerator. The device is equipped with a gas discharge indicator, in the circuit of which a shunt resistance is connected in parallel, and a detachable connection socket for connection to a controlled candle II.,. .. ..

A disadvantage of the known device is its low efficiency, due to the fact that it does not allow to estimate the value of the interelectrode gap in the spark plug.

The aim of the invention is to increase the efficiency of the control device. This goal is achieved by the fact that the device for controlling the spark plugs of the internal combustion engine, comprising a high-voltage piezogenerator installed in the housing with a quasistationary loading lever mechanism, a gas-discharge indicator equipped with a shunt resistance, is detachable, and the piezo generator is an electric arc. connected to the socket of the detachable joint and the case, further comprises a discharge with an adjustable spark gap, electrically connected between the socket plug connection and housing.

Fig 1 shows the proposed device, general view, section; in fig. 2 - basic electrical device diagram.

The proposed device is assembled in the housing 1 (Fig. 1), made of two parts and equipped with a magnet 2 for electrical connection to the engine mass. In the insulation block there are 3 assemblies & nest 4 detachable connections with a high-voltage wire connecting the plug to the engine distributor. The gas-discharge indicator 5 in the form of a neon lamp is closed by a transparent cap b. Electrode 7 times days-. ka 8 (fig. 2) and the second electrode 9, made in the form of an adjusting screw provided with a scale, are installed in the housing 1. To control the spark plugs directly, the device has an adapter sleeve 10 that is installed in the socket

4 plug connections. In parallel, the indicator 5 is connected to a shunt resistance 11. The arrester 8 is electrically connected between the socket 4 and the housing 1 in series to the Indicator 5, which is connected by a high-voltage wire 12 to the high voltage piezoelectric current collector 13 containing a pair of piezoelectric elements 14 placed in the holder 15 by polar poles opposite. to a friend. A current collector 13 is mounted between the piezo elements 14, the negative poles of which are connected directly to the housing 1. The piezo generator is placed between the supporting discs 16 and fixed by means of the clamping screw 17 on one side, and the axis 18 on the other side, which is connected with the button 20 by the lever mechanism 19. The preload of the piezogenerator is made with a screw 17, with the yoke 15 inclined at an angle to the longitudinal axis of the housing 1. A locking mechanism 19. provides quasistationary loading of piezoelectric elements 14.

The device works as follows.

The high-voltage wire connecting the spark plug to the distributor is coupled to the detachable socket 4 of the magnet 2 connected to the motor housing. In the case of an autonomous control of the spark plug, as a separate charge, and mounted on the engine cylinder, a transition sleeve 10 is installed in the socket 4 of the detachable connection for connection to the spark plug. By pressing the button 20 with the hand, the operator turns the axis 18 and the holder 15 with the lever of the mechanism 19, and the compression (quasistationary loading) of the piezoelectric elements 14 occurs. During the compression process, the piezoelectric generator produces a high electrical voltage causing a spark plug or. in discharge 8. Repeated sparking in each cycle of loading the piezo-generator improves the conditions of visual reading of information on the light board (indicator 5, transparent cap 6).

When monitoring candles with internal short circuit, for example, when there is a strong heating or insulation damage of any signal. High-voltage wire-tip-to-wire circuits, due to current leakage, the voltage on the piezogenerator may not reach the required value for the spark gap, but through indicator 5 will pass the leakage current at its operating current level, causing a glow. To suppress the luminescence of the indicator 5 while monitoring the faulty whiteness

or a circuit 11 is introduced into the device circuit, a shunt current flowing through the indicator 5. When monitoring a working candle, the voltage on the piezogenerator increases without loss of current leakage, and simultaneously with the breakdown of the spark gap, the indicator 5 flashes.

Before starting work with the device electrode 9, the spark gap in the discharge element 8 is set equal to -1 mm, i.e. 3 is higher than the nominal interelectrode gap in the spark plug - 0.8 - 0.9 mm.

If the candle is operational, then pressing the button 20 causes the flash of the indicator 5. This means that the gap in the candle is less than 1 mm. If the gap in the candle is greater than 1 mm, then a breakdown occurs between the electrode 7 of the bit 8 and the adjusting electrode 9.

Consistently reducing the spark gap by the electrode 9 in the digit 8 and the compression of the piezoelectric elements 14, the operator monitors the indicator5. The reading of the scale of the adjusting electrode 9, corresponding to the cessation of the glow of the indicator 5, is equal to the gap between the electrodes of the candle. If the gap turns out to be the appropriate norm, then the candle is in good condition ...

In order to reduce the monitoring time, it is possible to turn off the sequential reduction of the gap and make control beyond the limits of the permissible value of the gap of the candle — the first measurement with a larger one, the second with a smaller than normal clearance.

The use of the proposed technical solution will make it possible to control the technical condition: then spark plugs and high voltage circuits connect them to the engine dispenser of automobiles. This reduces

0 time control.

The presence of an additional spark gap with an adjustable spark gap will allow you to measure the actual clearance in the candle, without removing it from the engine.

AT

"

Phie. 2

Claims (1)

A DEVICE FOR CONTROL OF A SPARKLING CANDLE OF IGNITION OF an internal combustion engine, comprising a high-voltage piezogenerator with a lever mechanism for quasi-stationary loading, a gas discharge indicator equipped with shunt resistance, and a plug-in connector, the piezoelectric generator being electrically connected to the plug-in connector and and moreover, in order to increase the monitoring efficiency, the device additionally contains a spark gap with an adjustable spark eerie electrically connected between the socket and the plug connection housing. | c>