CN2375782Y - Contactless electronic igniter - Google Patents

Abstract

The utility model relates to an igniter for the ignition of an automotive engine, which is composed of a signal timing device, an amplifying circuit, and an original distributor cam. The utility model is characterized in that the iron core of the utility model is perpendicular to a cam, and the interval is 0.1-0.3 mm; the input terminal of an amplification control circuit is provided with a dielectric capacitor C1 and a voltage stabilizing circuit which is composed of R2, R3, D2, and D1. A disclosed contactless electronic ignitor has the advantages of convenient installation and large high-speed igniting energy. The utility model is suitable for single-cylinders and multi-cylinders. The utility model overcomes the bad result of engine fire and difficult starting.

Description

The non-contact electronic ignition device

The utility model relates to the ignition mechanism of motor car engine, is a kind of zero defect ignition that is applicable to various single cylinders or multicylinder engine.

Various ignition mechanisms on the existing automobile, as traditional platinum point gold, it is fast mainly to exist the platinum contact oxidation, and motor easily produces and catches fire, unstable properties, starting difficulty when low temperature, working life is short; Another kind of no platinum contact ignition mechanism requires harshness to the amplifying tube in the amplification circuit, punctures easily, and working life is short; Amplification circuit is subjected to electromagnetic interference easily, influences the motor normal ignition, and the maintenance dress changes difficulty, and the driver is reluctant to accept use.

The purpose of this utility model is in order to overcome the shortcoming of existing non-contact electronic ignition device, to design and provide a kind of easy for installation, strong anti-electromagnetic interference being arranged, stable non-contact electronic ignition device.

The utility model adopts following technical conceive scheme to finish above-mentioned purpose: it is by the timing of signals device, and former parallel circuit cam and amplification control circuit constitute.The timing of signals device is made up of base plate, coil, iron core, magnet and single line lead-in wire, and coil is by 0.75mm enameled cable coiling 4500 circles, garden shape magnet internal diameter 0.5mm, external diameter 25mm, thickness 5mm.Be connected on the distributor by base plate, the single line lead-in wire connects the input end of amplification control circuit, and the output terminal of amplification control circuit connects the primary air of high-voltage ignition coil, and iron core one end face is protruding defeated vertical with original distributor, alternate 0.1-0.3mm; Amplification control circuit comprises signal input control circuit, the prime signal amplification circuit, and the compensation correction feeder loop, excitation promotes to amplify device for switching.At input end attaching input dielectric capacitance with by resistance R ₁-R ₃, diode D ₂, D ₁The mu balanced circuit of forming, its quenching resistor two ends are connected with the dielectric capacitance positive terminal with power supply, two diode ground connection in parallel.The operating voltage of dielectric capacitance and mu balanced circuit stabilizing circuit makes signal input control circuit work keep normal state at 0.62-0.7V, and spark coil output point ignition voltage is at 2500V.

The technical solution of the utility model and other ignitions compare, and have the following advantages: the timing of signals device directly is connected on the distributor, economize and remove the cam cover, and be easy for installation.Utilize former distributor cam, applicability is good, be suitable for the igniting of single cylinder and multicylinder engine, input amplifier attaching input dielectric capacitance C makes stable operating voltage at 0.62-0.7V, exclude the VDC of input, the input of signal single line, ignition control signal voltage is exported up to 2500V, and burning is thoroughly, save energy consumption, pollution abatement.

Below, narration in conjunction with the embodiments is described as follows technology contents of the present utility model:

Fig. 1 is the view of timing of signals device structure of the present utility model and attaching on distributor.

Fig. 2 is the utility model amplification circuit schematic diagram.

The base plate 7 of timing of signals device is installed on the distributor 5, be fixed on coil 4 iron cores 2 and magnet 1 are arranged on the base plate 7, one end face of iron core 2 and the cam 6 of former distributor are perpendicular, and the gap that keeps spaced apart 0.1-0.3mm, as shown in Figure 1, cam 6 rotates with iron core 2 alternate variation certain distances and produce a magnetic alternating induction current signal is passed to amplification circuit by single line lead-in wire 3 input end A on coil 4.Signal input control circuit is by capacitor C ₁-C ₅, resistance R ₁-R ₆, diode D ₁-D ₃, triode BG ₁Form.Dielectric capacitance C ₁Connect signal input part A and R ₂And R ₄Common joint D ₄Between, C ₁With resistance R ₁-R ₃, D ₁, D ₂The mu balanced circuit of composition stablize amplification control circuit operating voltage at 0.62-0.7V, its quenching resistor R ₁And R ₂Connect power supply 12V and C ₁Positive pole, diode D ₁And D ₂And connecting back ground connection, the timing of signals device is imported positive and negative pulse enable signal BG ₁Be in conducting or cut-off state.Capacitor C ₃, eliminate noise signal, its output BG ₁Collector electrode connects the BG of prime signal amplification circuit ₂Base stage, the prime signal amplification circuit is by triode BG ₂, resistance R ₆-R ₉, circuit C ₅-C ₇Form BG ₁Conducting, R ₇Both end voltage is very low, BG ₂End; BG ₁End R ₇Voltage rises, BG ₂Conducting, operating current obtain to amplify, by its output terminal BG ₂Collector electrode encourages the BG that promotes amplification switch circuit in succession ₃Base stage.The compensation correction feeder loop is served as by amplifier integrated block ON16CL, and feedback input end pin 1 meets BG ₃The emitter output terminal, feedback output end pin 3 meets BG ₂Base stage; Pin 4 connects capacitor C ₅Connect BG ₁Base stage, strengthen the engine ignition energy, the auto-adjusting circuit working state adapts to the requirement of motor different rotating speeds and frequency, excitation promotes amplification switch circuit by triode BG ₃, BG ₄, BG ₅And peripheral circuit R ₉-R ₁₃, D ₄Form its composite pipe BG ₅Collector output is an elementary end of the output termination high-voltage ignition coil of amplification control circuit.Timing device input negative signal makes BG ₁End, positive signal makes BG ₁Conducting, BG ₁End BG ₂Operating current amplifies by becoming conducting by former, the positive and negative signal pulse of timing of signals device input, BG ₂Be in repetition alternate conduction and cut-off state, BG ₂, BG ₄Also be in conducting and cut heart state, BG ₅Then be on the contrary and end and conducting BG ₅End, base voltage is 0V, because the elementary 12V of high-voltage ignition coil is direct and BG ₅Utmost point electrode links to each other, BG ₅Conducting with end, make the secondary generation igniting high pressure of high-voltage ignition coil reach 25000V.

BG in the circuit ₁, BG ₂: C1518, BG ₃, BG ₄: c2060, BG ₅: 4859.

Claims (3)

1, a kind of non-contact electronic ignition device, it is by the timing of signals device, and atom electrical equipment cam and amplification control circuit constitute, and it is characterized in that the iron core same distributor cams of (2) one end faces (6) are vertical, alternate 0.1-0.3mm, amplification control circuit input end have input dielectric capacitance C ₁With by resistance R ₁-R ₃, diode D ₁, D ₂The mu balanced circuit of forming, quenching resistor R ₁, R ₂Two ends are connected with the dielectric capacitance positive terminal with power supply, diode D ₁, D ₂Ground connection in parallel.

2,, it is characterized in that timing of signals device single line lead-in wire (3) connects the input end A of amplification control circuit by the positive igniter of the described a kind of contactless electricity of claim 1.

3, by right 1 described a kind of non-contact electronic ignition device, the coil (4) that it is characterized in that the timing of signals device is by 0.75mm enameled cable coiling 4500 circles.