CN2205450Y

CN2205450Y - Capacity energy storage electronic ignitor

Info

Publication number: CN2205450Y
Application number: CN 94219923
Authority: CN
Inventors: 潘钰铭
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-08-31
Filing date: 1994-08-31
Publication date: 1995-08-16
Anticipated expiration: 2004-08-31

Abstract

The utility model relates to a capacity energy storage electronic igniter for automobiles, which is composed of a circuit base seat which is provided with an energy storage and electronic switching circuit and a high voltage transformer and a cover casing. The energy storage and electronic switching circuit comprises a medium-voltage generating device, trigger equipment and the controlled silicon whose conduction is controlled by the trigger equipment; the two output terminals of the medium-voltage generating device are separately connected with a first and a second energy storage capacitors. Having the advantages of high ignition performance and high spark energy, the utility model can reduce fuel consumption of automobiles and reduce harmful gas discharge of automobiles.

Description

Capacity energy storage electronic ignitor

The utility model relates to a kind of igniter for automobile, and particularly a kind of capacitance energy storage ignition belongs to the F02P3/06 class.

Existing all kinds of energy storage type igniter, the spark coils that adopt as energy-storage travelling wave tube more, its working principle is: when a low-voltage DC is received spark coil elementary, there is an electric current that increases in time to flow through elementary winding, spark coil is magnetized, disconnect primary current then, magnetic flux in the spark coil is tending towards reducing, the magnetic flux induced electromotive force in secondary windings that changes, because the secondary windings number of turns is a lot, more than 100 times of the normally elementary winding number of turns, the voltage that generates can surpass 20KV when spark coil is unloaded.This height is crimped onto on the gasoline motor spark plug, and the inflammable gas in the disruptive spark plug gap forms a spy short little electric arc of continuous time, is called sparkover, and the heat ignited flammable gas of spark makes the motor work done.

The characteristic of gaseous discharge is: after gaseous discharge entered the stage of controlling oneself, its C-V characteristic presented negative impedance, and the electric current that promptly flows through discharge channel is big more, and the voltage at discharge channel two ends is just more little.The current density of discharge channel surpasses every square centimeter of hundreds of amperehour, forms Arc Discharge, and bigger electric current formed electric arc is more sturdy, and the electric arc that less current forms is just thinner and more delicate.

Existing all kinds of ignition all is to transmit energy with spark coil, though and spark coil can produce suitable high-voltage breakdown spark plug air gap at secondary windings, but the secondary current that forms in the Arc Discharge stage because of the energy loss in the internal resistance is that arc current is less, the electric arc that forms is very thin and delicate, thereby they can not solve and promptly will produce high voltage-small current and come disruptive spark plug air gap, produce the contradiction that low-voltage, high-current strengthens electric arc again, the characteristic with gaseous discharge is not complementary in other words.

The purpose of this utility model provides a kind of can better the coupling with gas discharge characteristic, the capacitance energy storage ignition that spark energy is big.

For achieving the above object, the utility model has adopted following technological scheme: be made up of pedestal that energy storage and electronic switching circuit, high-tension transformer are housed and housing case, comprise the generating apparatus of cutting down output in, flip flop equipment in energy storage and the electronic switching circuit and by the controllable silicon of flip flop equipment control, in cut down output two output terminals of generating apparatus be connected to respectively and press energy-storage capacitor in first and second.For improving discharging efficiency, be connected to diode at the secondary two ends of coils of high-voltage transformers.

In the cut down output input terminal of generating apparatus and flip flop equipment be arranged on the panel of housing case.

Further specify below in conjunction with accompanying drawing

Fig. 1 is the utility model structural representation

Fig. 2 is the utility model circuit theory schematic representation

Cut down output in the being circuit theory diagrams of generating apparatus of Fig. 3

Fig. 4 is the circuit theory diagrams of flip flop equipment

As shown in Figure 1, energy storage and electronic switching circuit element and high-tension transformer B5 are housed fixedly on the pedestal 8, and are plugged in the housing case 1, in the cut down output input terminal V of generating apparatus and flip flop equipment ₀, P ₀Be arranged on the panel of housing case.

Fig. 2 is a main circuit principle schematic of the present utility model, comprising in the generating apparatus 2 of cutting down output, flip flop equipment 9, capacitor C 3, C4, high-tension transformer B5, diode D6, spark plug 7, controllable silicon SCR 10.

In cut down output the circuit theory of generating apparatus 2 can be referring to Fig. 3, the vibrator circuit that it is made up of transistor BG13BG14 resistance R 1, R2, boosting transformer B15 and rectifier D16, D17 form, can be with the 12V low-voltage DC conversion of automobile into about piezoelectricity among the 300V in the utility model.

The circuit theory diagrams of flip flop equipment 9 are seen Fig. 4, and it is a kind of with terminals P ₀The ignition timing shaping pulse of sending here to be fit to trigger the circuit of controllable silicon SCR 10, is made of resistance R 18, resistance 19, R20, capacitor C 21, C22 and anti-phase output scmitt trigger circuit 23,24.

Working principle of the present utility model is: the 12V low tension power supply of automobile is received power supply terminal V ₀On, cut down output in giving generating apparatus 2 and flip flop equipment 9 power supplies.In the middle pressure that generating apparatus produces 300V of cutting down output to first and second, press energy-storage capacitor C3, C4 charging, flip flop equipment input end P respectively from output terminal ₀When having the ignition timing signal to arrive, flip flop equipment 9 triggers controllable silicon SCR 10 conductings, press elementary winding and controllable silicon SCR 10 discharges of energy-storage capacitor C3 in first by high-tension transformer, the secondary windings of B5 generates the air gap that high-tension electricity punctures spark plug 7, and the ionization channels of formation reduces the pressure drop at air gap two ends; Press the bubble-discharge of energy-storage capacitor C4 by diode D6 and spark plug 7 immediately in second, discharge current can form very strong electric arc.Its discharge current can be greater than the discharge current that has igniter now more than 100 times.

The utility model cooperates the characteristic of gaseous discharge, produce high voltage-small current by high-tension transformer B5 and come disruptive spark plug air gap, in second, press energy-storage capacitor generation low-voltage, high-current to strengthen electric arc, high-tension transformer needn't transmit whole spark energies, and there is not bigger resistance in the discharge loop, discharging efficiency height and its concentration of energy were emitted in the initial stage of spark, had improved ignition performance greatly.

Claims

1, a kind of capacitance energy storage ignition, form by circuit base that energy storage and electronic switching circuit and high-tension transformer (B5) is housed (8) and housing case (1), cut down output in comprising in described energy storage and the electronic switching circuit controllable silicon (SCR10) of generating apparatus (2) and flip flop equipment (9) and flip flop equipment control is characterized in that: in cut down output two output terminals of generating apparatus be connected to first and second energy-storage capacitor C3, C4 respectively.

2, a kind of capacitance energy storage ignition as claimed in claim 1 is characterized in that: be connected to diode at high-tension transformer B5 two ends.