CN2130935Y

CN2130935Y - Non-contact high-energy electronic ignitor

Info

Publication number: CN2130935Y
Application number: CN 92232781
Authority: CN
Inventors: 雷仙林
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-09-06
Filing date: 1992-09-06
Publication date: 1993-04-28
Anticipated expiration: 2002-09-06

Abstract

The utility model relates to a non-contact high-energy electronic ignitor, which is composed of a direct current booster converter circuit, a discharging circuit, a hall triggering circuit, and an ignition coil. The non-contact high-energy electronic ignitor is characterized in that a discharge switch in the discharging circuit connected in series with a transistor and a one-direction thyristor is connected in parallel with a voltage stabilizing diode. The structure solves problems of poor reliability caused by only adopting the transistor or uneasy turn-off caused by only adopting the thyristor. The ignition coil can induct high voltage of more than 30000 volt to ignite; the utility model has the advantages of large ignition energy, easy starting, and stable high and low speed operation. The non-contact high-energy electronic ignitor is convenient to replace a contact type or other non-contact type ignitor used by the existing gasoline engine.

Description

Non-contact high-energy electronic ignitor

The utility model relates to the ignition mechanism in the gasoline engine ignition system, relates in particular to a kind of contactless high-energy electronic igniter.

In the prior art, domestic automobile almost all uses traditional platinum contact outage pilot firearm, limited by the contact, and igniting power is little, and when temperature was high or low, motor was difficult for starting, and the easy oxidation in contact, often needed to change from gold.And domestic how tame improved beakless ignition, ignitions such as the high contact of contactless energy fire are all lacked and are not widely adopted because of poor reliability, life-span, these igniters also all are made up of discharge circuit etc., its deficiency is: the discharge switch in the discharge circuit all adopts transistor or one-way SCR separately, the former because of the quality of transistors of prior art and Power Limitation ignition energy and poor reliability, the latter is difficult for turn-offing phenomenon because of the controllable silicon characteristic has.

According to having problems in the prior art, the purpose of this utility model is to design a kind of novel contactless high-energy electronic igniter, this igniter, big, the high low speed working stability of ignition energy, the supply voltage applied range can conveniently be replaced above-mentioned contact type or other non-contact type igniter.The purpose of this utility model is realized by following technical proposals: change circuit, discharge circuit, Hall trigger circuit and spark coil by DC boosting and form contactless high-energy electronic igniter, the utility model special way is: the discharge switch in the discharge circuit is a transistor (BG ₂) and an one-way SCR (SCR) series connection after be connected to high direct voltage output two ends, at these two ends again and meet a reference diode (D ₂), at the control utmost point and the transistor (BG of controllable silicon (SCR) ₂) indirect two the diode (D of base stage ₃, D ₄).

Compared with prior art, with being attempted by high direct voltage output two ends after the collector electrode of transistor and the series connection of one-way SCR negative electrode, serve as discharge switch, make DC boosting conversion circuit high pressure output current can do very greatly, short circuit current reaches more than the 100mA.This discharge switch is when starting; under the sharply decline situation of supply voltage; ignition energy is constant; still can light lean mixture vapour, and it is fully burnt, when high engine speeds turns round; DC boosting conversion circuit output current is kept electric current greater than unidirectional control silicon; because the effect of transistor causes controllable silicon to turn-off, export two ends and connect a reference diode in high direct voltage, play protection discharge capacity C ₃But the effect of silicon control and transistor.Use this igniter will improve engine power, reduce exhaust pollution, reduce oil consumption, and can strengthen reliability, increase the service life.In addition, this igniter easy for installation, can replace.A large amount of at present contact type or other non-contact type high-energy electronic igniters that use.

Fig. 1 is the utility model electrical schematic diagram.

Fig. 2 is the utility model schematic representation.

Below in conjunction with accompanying drawing the utility model is done progressive some description: DC booster converter 2 connects DC electrical source-automobile battery 1, the secondary discharge switching circuit 3 that connects of DC booster converter, the discharge capacity C in the discharge circuit ₃With 4 elementary linking to each other of spark coil, bonding permanent-magnet steel 7 on generator or distributor 8 rotatingshafts, on generator or the distributor 8 rotatingshaft shells with permanent-magnet steel 7 corresponding trigger positions on, Hall element 6 is housed, Hall element 6 and transistor BG ₃Link to each other, permanent-magnet steel 7 in rotating shaft, when forwarding to Hall element 6 corresponding positions, and BG ₃The output high petential triggers BG ₂With the controllable silicon conducting, with C ₃Go up stored electric energy and go out high-tension electricity more than 30,000 volts, the extremely strong electrical spark of generation on spark plug to the secondary induction of the elementary discharge of spark coil 4, spark coil 4.

B in the present embodiment ₁Adopt high frequency ferrite magnetic stamen and the coiling of rolled products of ordinary high-strength enameled cable to form BG ₁Power 〉=50W, BG ₂The withstand voltage 1000V of power 〉=50W/, SCR are 4A/600V, D ₂Adopt 3 130V/1W voltage-stabiliser tube series connection, D ₃, D ₄Be the 400V/1A diode.

By C ₃, D ₃, D ₄, BG ₂, SCR, B ₂Form discharge circuit, C ₃Discharge switch adopt controllable silicon SCR and triode BG ₂Form, when motor need be lighted a fire, Hall did not have part near permanent-magnet steel, makes BG ₃Trigger voltage of collector electrode output is added in the base stage that silicon controlled is controlled the utmost point and triode, simultaneously because BG ₂The base stage trigger voltage low than silicon controlled control utmost point trigger voltage, so BG ₂At first conducting, controllable silicon conducting then.Overcome owing to the unfavorable problem of crystal switch state, when permanent-magnet steel left Hall element, discharge circuit lost trigger voltage, BG ₂Because of there not being base voltage to end, controllable silicon ends then, begins C again ₃Dash electricity, wait for igniting next time, D ₃D ₄Be for preventing BG ₂Collector voltage is by being added in BG by controllable silicon ₂Base stage cause BG ₂Can not by and the design.More than all elements all can be contained in the little casing so that by dress.

Claims

1, a kind of contactless high-energy electronic igniter, by the DC boosting conversion circuit, discharge circuit, Hall trigger circuit and spark coil are formed, and it is characterized in that the discharge switch in the described discharge circuit is a transistor (BG ₂) and an one-way SCR (SCR) series connection after be connected to direct current transformation output two ends, at these two ends again and meet a reference diode (D ₂), at the control utmost point and the transistor (BG of unidirectional controllable silicon S CR ₂) meet two diode (D between the base stage ₃, D ₄).