CN2315321Y - Automatic ignitor of gasoline engine - Google Patents

Abstract

The utility model relates to an automatic ignitor of a gasoline engine, comprising a power source adapter, a spark plug and a cylinder. The output end of the power source adapter is directly connected with the spark plug on the cylinder. The spark plug is composed of a centre, an insulating sleeve and a connecting bolt. Discharge gap is formed between the center pole of the spark plug and the piston end part of the cylinder. The length of the discharge end head of the center pole is 3 to 15 mm. The device totally disengages from the complex electromechanical system of the ignition pulse of a distributor distributing. The utility model has the advantages of simple structure, low cost and high reliability, in addition, enhances spark intensity and the power and the motivity of the engine.

Description

The petrol engine automatic ignition device

The utility model belongs to petrolic firing technique.

Existing petrolic ignition system, it all is rotor rotation by the distribution shaft strap cam and the distributing disk of motor, to reach correctly purpose to each cylinder distributing point thermoelectricity pulse, its critical piece comprises: spark coil, spark plug, circuit breaker-distributing disk, and the related device of adjusting the electronic spark advance amount.This traditional ignition mechanism, though also can satisfy the needs of gasoline engine ignition, but because the spark coil primary current is subjected to the restriction of platinum contact, thereby make the raising of spark energy be subjected to considerable restraint, should be noted that especially the platinum contact ablates easily, it is the common fault of this ignition system, development in recent years, ignition has appearred, though overcome the problem of easy ablation in platinum contact and ignition energy deficiency, but still need drive the complex electromechanical systems that distributor distributes firing pulse by the distribution shaft of bent axle coupling.

The purpose of this utility model provides a kind of petrol engine automatic ignition device.Make it break away from the complex electromechanical systems of distributor distribution firing pulse fully, not only guarantee and improved greatly the reliability of igniting, and simplify the structure, reduced cost greatly.

This purpose is to realize with following technical proposal: it comprises supply convertor, spark plug and cylinder, the output terminal of described supply convertor spark plug direct and on the cylinder is connected, described spark plug has center pole, insulating bush and connecting bolt and constitutes, and spark plug center pole and cylinder piston upper end portion constitute discharging gap.The discharge end head length 3～15mm of center pole wherein.

The utility model has broken away from distributor fully with regard to its gasoline engine ignition system, simplified its structure greatly, greatly reduces cost, and the reliability of equipment is greatly improved.From technology itself, this ignition mechanism not only guarantees ignition energy and improved spark intensity greatly, and makes the endurance of spark obtain prolonging, if the premature ignition angle is 10 degree, then the spark duration angle is about 20 degree.So the raising of electrical spark intensity and the prolongation of endurance must make gasoline combustion more abundant, have improved the power and the power of motor, also overcome the problem of sooting of the spark plug and exhaust emission pollution simultaneously.

Following accompanying drawing provides an embodiment:

Fig. 1 is the utility model theory diagram.

Fig. 2 is the concrete fundamental diagram of the utility model.

Fig. 3 is the spark plug cross section view.

As shown in Figure 1, this automatic ignition device mainly is made up of supply convertor 1, spark plug 2, cylinder 3, wherein the output terminal of supply convertor joins with the connecting end of three spark plugs 2 respectively, spark plug is fixed on the cylinder head of three cylinders 3, and the upper end of each piston 4 and the center pole of spark plug (conductive electrode) constitute a discharging gap.Cylinder shell is a grounding end.As shown in Figure 2, supply convertor can be reached by diode D1, D2, D3, D4 by switching circuit, the transformer B that triple-pole switch pipe T and resistance R constitute, and the voltage-multiplying circuit that charging capacitor C1, C2, C3, C4 constitute is formed; As shown in Figure 3: spark plug can adopt original spark plug, just its side pole is taken down, and keeps center pole 6, isolation layer 6 and connecting bolt 7.The discharge end head length 3～15mm of center pole wherein.

The working principle of this device: 12V power supply on the automobile is boosted about 10,000 volts and it directly is added to connecting end on each spark plug center pole through the transducer conversion, because spark plug is the special-purpose spark plug of no side pole, although high-voltage power is added on the center pole, but do not produce spark, have only when the compression piston of cylinder moves to a certain appropriate location of budc, high-voltage power is the air gap of disruptive spark plug center pole and piston upper end cap just, forms strong spark, lights the mixed gas work done.This ignition mechanism does not need parts such as distribution shaft, distributing disk, circuit breaker and high-tension coil, and ignition system is simplified greatly.

The adjustment of electronic spark advance amount, at first make between the end points of spark plug center pole and piston top dead center and have suitable distance, regulate supply convertor voltage again, make it reach a suitable striking distance, when engine speed improves, can utilize the generating voltage of motor to raise and control the output voltage amplitude of supply convertor, thereby change the spark-over distance, thereby also reach the purpose that changes advance angle with engine speed change automatically.

Claims (2)

1. petrol engine automatic ignition device, it comprises supply convertor (1), spark plug (2) and cylinder (3), the output terminal that it is characterized in that supply convertor directly is connected with the connecting end of spark plug on the cylinder, described spark plug has center pole (5), insulating bush (6) and connecting bolt (7) and constitutes, and spark plug center pole (5) constitutes discharging gap with cylinder piston (4) upper end portion.

2. petrol engine automatic ignition device according to claim 1 is characterized in that the discharge end head length 3～15mm of center pole (5).

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