CN2428593Y - Passive electronic ignitor for automobile - Google Patents

Abstract

The utility model discloses a passive electronic igniter for automobiles, which is composed of a composite switching circuit 1. The composite switching circuit 1 comprises a resistor R, a capacitor C, a PNP type triode BG1, and a damping triode BG2. The utility model has the advantages of small size, light weight, and low cost. The utility model is characterized in that on the existing automobile which uses a breaker for ignition, the terminal A1 of an igniter circuit is connected with the breaker, the terminal A2 is connected with the negative electrode of the lower-voltage terminal of an ignition coil, the terminal A3 which is connected with the automobile body is a grounding line. The utility model also has the advantages of convenient mounting, convenient maintenance, and convenient operation. The utility model is an ideal novel electronic igniter.

Description

Automobile passive electronic igniter

The utility model relates to a kind of electronic ignition device for automobile.

The ignition that uses on the present automobile, complex circuit, with high content of technology, cost is also high, price generally about 400 yuan, in case break down, is hesitated to discard, and repair very difficultly, and and have only the practicing engineer to keep in repair, everyday driver is all beyond power.Particularly automobile casts anchor in stroke, whole automobile can only be dragged to Auto repair shop and keep in repair, and causes very burden, also delay trip to the driver.

For overcoming above-mentioned shortcoming, the purpose of this utility model is to provide that a kind of circuit is simple, cost is low, the automotive electronic igniter of easy-maintaining.

Solution of the present utility model is, this automobile passive electronic igniter is made up of composite switch circuit, composite switch circuit comprises a resistance, an electric capacity, a PNP triode and a damping triode, capacitor C and damping transistor collector, emitter junction are in parallel, the damping transistor base is connected with transistor collector, the damping transistor collector is connected with PNP triode emitter junction, the PNP transistor base is connected with resistance, resistance one end and automobile power-down device join, and the other end and automobile ignition coil low voltage terminal negative pole join; An end and car body join again, are ground wire.

Owing to adopted said structure, electronic component of the present utility model is few, and circuit is simple, cost low (about 10 yuan), and easy-maintaining (everyday driver is easy to learn), ignition performance is good.

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is the utility model assembly circuit figure.

As shown in Figure 1, the utility model automobile passive electronic igniter is made up of composite switch circuit 1, and composite switch circuit 1 comprises resistance R, capacitor C, PNP triode BG ₁With damping triode BG ₂, capacitor C and damping triode BG ₂Collector electrode, emitter junction parallel connection, damping triode BG ₂Base stage and triode BG ₁Collector electrode connects, damping triode BG ₂Collector electrode and triode BG ₁Emitter junction connects, triode BG ₁Base stage is connected with resistance R, and resistance R one end is composite switch circuit A ₁End joins with automobile power-down device K; Circuit A ₂End joins A with automobile ignition coil low voltage terminal negative pole ₃End joins with car body, is ground wire.

Can select in following scope when automobile passive electronic igniter is selected electronic component: the performance number of resistance R is $\frac{1}{2}W$ , resistance is 300-1000 Ω, the withstand voltage 1600V of capacitor C, capacity are 0.22-0.3 μ F, triode BG ₁Breakdown reverse voltage 150V-300V, electric current are the 1.5-2.5 ampere, damping triode BG ₂Breakdown reverse voltage 900V-1500V, electric current 10-15 ampere.

Usually the working principle of ignition is by Hall transducer transmission igniting level signal, carries out ignition operation by amplifier again, and it is pure electronic component.And automobile passive electronic igniter is to change former circuit breaker igniting the igniting of into electronics circuit breaker, and its principle is according to the distinctive switching characteristic of transistor, allows transistor carry out work in turn in saturation region and cut-off region, plays the effect of switch.

Owing to adopt the compound circuit of different pole triode, compound circuit triode BG ₂Polarity and triode BG ₁Identical, because of triode BG ₁Be positive-negative-positive, promptly the just very zero potential of power supply so their working inverse voltage parameter is negative value, is given triode BG as long as pass through circuit breaker K ₁Base stage injects electric current, transistor is supersaturation rapidly just, make the outer spark coil low voltage terminal electric current of circuit also saturated, the electric current that disconnect to inject base stage as circuit breaker K is forced to cut off (because of this circuit is a passive electrical circuit) forces circuit to quit work, make collector electrode and emitter junction be in cut-off state, electric current in the spark coil also rapidly disappears, thereby makes time extra-high voltage coil produce high pressure and discharge, and has promptly finished the process of a switch ignition.

The utility model volume is little, and is in light weight, on the automobile of existing use circuit breaker igniting, only needs the end (A with automobile passive electronic ignitor circuit ₁End) joins the other end (A with the automobile power-down device ₂End) joins with automobile ignition coil low voltage terminal negative pole, again an end (A ₃Hold) joining with car body gets final product.Simple installation, maintenance is used also very easy, is a kind of desirable novel electron ignition mechanism.

Claims (2)

1, a kind of automobile passive electronic igniter, it is characterized in that: it is made up of composite switch circuit (1), and composite switch circuit (1) comprises resistance R, capacitor C, PNP triode BG ₁With damping triode BG ₂, capacitor C and damping triode BG ₂Collector electrode, emitter junction parallel connection, damping triode BG ₂Base stage and triode BG ₁Collector electrode connects, damping triode BG ₂Collector electrode and triode BG ₁Emitter junction connects, triode BG ₁Base stage is connected with resistance R, and resistance R one end is composite switch circuit A ₁End joins circuit A with automobile power-down device K ₂End joins A with automobile ignition coil low voltage terminal negative pole ₃End joins with car body, is ground wire.

2, a kind of automobile passive electronic igniter according to claim 1, it is characterized in that: the performance number of resistance R is  W, and resistance is 300-1000 Ω, and the withstand voltage 1600V of capacitor C, capacity are 0.22-0.3 μ F, triode BG ₁Breakdown reverse voltage 150V-300V, electric current are the 1.5-2.5 ampere, damping triode BG ₂Breakdown reverse voltage 900V-1500V, electric current 10-15 ampere.

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