CN2260898Y

CN2260898Y - Electronic ignitor for automobile

Info

Publication number: CN2260898Y
Application number: CN 96235936
Authority: CN
Inventors: 王根生
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-06-05
Filing date: 1996-06-05
Publication date: 1997-08-27
Anticipated expiration: 2006-06-05

Abstract

The utility model relates to an electronic ignitor for an automobile. A trigger of a switch control circuit of the utility model sends a trigger signal into an output circuit after the trigger signal is amplified by an amplifier. An ignition circuit comprises a high frequency oscillator of which the output end is connected to the output circuit of which the output end is connected with an ignition coil. The trigger is arranged on the distributor block of an automobile. The utility model overcomes the defects caused by the way that the existing ignitor for the automobile only can send spark to ignite. The utility model adopts high-frequency spark bundles to ignite, and has the advantages of high ignition efficiency, sufficient oil combustion, small turn number of the ignition coil, thin linear diameter, small size, low cost, stable performance and low possibility of damage.

Description

Automotive electronic igniter

The utility model relates to a kind of automobile high-frequency electronic igniter.

At present, no matter the spark coil in the fuel engine automotive ignition system is the mechanical contact-type circuit breaker, and still contactless ignition all is that the running along with motor turns on and off the spark coil primary source, makes secondary generation high tension spark.Because during each the igniting spark point can only be arranged, so ignition effectiveness is low, fuel utilization ratio is low, the waste fuel oil, pollutant NOx and HC content height in the exhaust, environmental pollution is serious, and motor also is difficult for starting.The time that spark coil turns on and off is long, and the electric current elementary by spark coil is big, and power consumption is big, and coil easily generates heat, and working life is short.Especially ignition switch is at ignition location and during engine misses, primary current is more than 7A, and coil seriously generates heat, and very easily burns out.Because spark rate is low, electric current is big, and the line footpath of coil is thick, and the number of turn is many, and the spark coil primary turns is 200～500 circles, thereby volume is big, the cost height.The igniter of existing different vehicle, its model specification is all inequality, can not be general, damage the back and change very inconvenient.

The purpose of this utility model is to avoid deficiency of the prior art, and a kind of ignition effectiveness height is provided, and oil inflame is abundant, and primary current is little, power consumption is little, and coil turn is few, and the line footpath is thin, and volume is little, cost is low, and is not fragile, automotive electronic igniter that can be general.

The purpose of this utility model can reach by following measure:

A kind of automotive electronic igniter is made of thread switching control road and ignition circuit two-part, and described ignition circuit comprises spark coil 5, its special way is, described ignition circuit also comprises high frequency oscillator 3, and its output inserts outlet line 4, the output contact fire coil 5 of described outlet line 4; Described thread switching control road comprises trigger 1, and it inserts outlet line 4 through amplifier 2; Described trigger 1 is arranged on automobile distributor controlled 8.

High frequency oscillator 3 of the present utility model can be made of time base integrated package IC1.

Outlet line 4 of the present utility model can be made of Darlington transistor Q1.

Trigger 1 of the present utility model can be made of reflector 10 on the cam 9 of being located at described distributor 8 and the infrared emission receiver 13 on the distributor 8, and the reflecting surface 7 of reflector 10 can be located on the convex surface or concave surface of cam 9, and remaining part is made as black flour 6; Infrared emission receiver 13 can be made of transmitter 11 and receiver 12, and described transmitter 11 can be made of infrared light emission pipe D2; Described receiver 12 can be made of phototransistor Q2.

Amplifier 2 of the present utility model can be made of triode Q3, Q4, and the emitter of described Q2 is connected to the base stage of Q3, and the collector electrode of described Q3 is connected to the base stage of Q4.

Trigger 1 of the present utility model comprises that the convex surface of the cam 9 that can be located at distributor 8 or the magnet on the concave surface 15 and receiving coil L be located on the distributor 8 and cam 9 corresponding positions.

The accompanying drawing drawing is described as follows:

Fig. 1 is a theory diagram of the present utility model.

Fig. 2 is the utility model one embodiment's circuit theory diagrams.

Fig. 3,4 is respectively two embodiments' of the utility model outlet line circuit theory diagrams.

Fig. 5 is the utility model trigger embodiment 1 a structural representation.

Fig. 6 is the utility model trigger embodiment 2 a structural representation.

The utility model is described in further detail below in conjunction with drawings and Examples:

Referring to Fig. 1, the utility model is to control the work of high-frequency and high-voltage ignition circuit by the thread switching control road, realizes igniting.The high-frequency and high-voltage ignition circuit comprises high frequency oscillator 3, outlet line 4 and spark coil 5, and the high-frequency impulse that oscillator 3 sends drives outlet line 4 work, makes spark coil 5 produce high voltage pulse.The thread switching control road comprises that the output signal of trigger 1, trigger 1 sends into outlet line 4 through amplifier 2.When motor car engine turned round to fired state, trigger 1 sent trigger signal, and this signal is control outlet line 4 output high frequency currents after amplifier 2 amplifies, and the mixed gas in a branch of high tension spark ignition combustion chamber is just arranged on the spark plug, make the motor work done.

Referring to Fig. 2 and Fig. 5, the trigger 1 on the utility model thread switching control road can adopt the infrared light sensing to trigger, and it is made of transmitter 11, reflector 10 and receiver 12, and transmitter 11 adopts infrarede emitting diode D2; Reflector F is arranged on the distributor cam 9; Receiver 12 is made up of photosensitive control triode Q2.When engine operation or when starting, the car accumulator electric current power to whole ignition circuit through isolating diode D1, adopts isolating diode, connects inverse time in that supply lines is positive and negative, and non-transformer is to whole line powering, thereby can not damage element because of the power supply reversal connection.Time base integrated package and peripheral Resistor-Capacitor Unit R1～R3, C1～C2 form high frequency oscillator 3 by NE555, and its output 15KHz pulse promotes outlet line 4 work that high-power darlington pipe Q1 constitutes, the spark coil 5 generation 25KVp-p high voltage pulses that coil T is constituted.At engine running during to fired state, the reflecting surface 7 that is contained in reflector F on the automobile distributor controlled cam 9 and is reflector 10 rotates to emission receiving plane with RF transmitter 11 and receiver 12 when relative, the infrared light that the light emitting diode D2 of formation transmitter 11 sends reflexes to the photosensitive reception triode Q2 that isolates with it through reflector F, be called for short photosensitive tube Q2, triode Q3 base stage in the amplifier 2 must be conducted, control triode Q4 base stage dead electricity is ended, then the Darlington transistor Q1 base stage of outlet line 4 obtains high-frequency impulse and works in the thread switching control road, the elementary of spark coil T has impulsive current to flow through, secondary induction goes out high pressure, produces a branch of spark and light a fire on spark plug S.When motor runs to the black flour 6 of the reflector 10 on the distributor cam, reflector F does not reflect the infrared light that light emitting diode D2 sends, photosensitive tube Q2 does not receive the infrared light that D2 sends, and then ends, and triode Q3 base stage dead electricity is ended, its current collection is high petential very, control valve Q4 base stage must conduct, and the pulse of oscillator 3 output is by short circuit, the Darlington transistor Q1 base stage no pulse in the outlet line 4 and ending, the elementary no current of spark coil T, secondary no-spark produces.The oscillation frequency of the utility model oscillator 3 can be adjusted by the Resistor-Capacitor Unit that changes the IC1 outside, the vibrator circuit that oscillator 3 also can adopt integrated packages such as NE556, TA7609 to form, or the multi-vibrator of transistor composition.Outlet line 4 also can increase one-level and promote when considering to reduce cost, and promptly constitutes outlet line shown in Figure 3 with high power valve Q5, Q6 and transformer B.The Bootstrap circuit shown in Figure 4 that outlet line 4 also can adopt triode Q7 and diode D3 and capacitor C 3, C4 to be connected into.

Referring to Fig. 5, when the thread switching control road adopts infrared light to trigger control, the illuminator 10 of trigger 1 can be arranged on automobile distributor controlled 8, with reflector 10 is that the reflecting surface 7 of reflector F is located on the skin ring 14, skin ring 14 is placed on the cam 9 of distributor 8, reflecting surface 7 is positioned on the convex surface of cam 9, and the remaining part of skin ring 14 then is a black flour 6.Be located at and reflector 10 corresponding positions by the infrared emission receiver 13 that reflector 11 and receiver 12 constitute, reflecting surface 7 on distributor cam 9 rotates to the emission of infraluminescence receiver 13, when receiving plane is relative, receiver 12 triggers outlet line 4 work, drive ignition coil T igniting, black flour 12 on distributor 8 rotates to the emission of infraluminescence receiver 13, when receiving plane is relative, and spark coil T no-spark produces.Reflecting surface 7 also can be located at the concave surface of distributor 8, and at this moment, the triode Q4 in the amplifier 2 must change the positive-negative-positive pipe into.Reflecting surface 7 also can Direct Electroplating be on the convex surface or concave surface of cam 9 when producing cam, and remaining part is then painted black flour.The utility model thread switching control road also can adopt electromagnetic sensing to trigger, and the magnet 15 that is about to trigger 1 is located on the convex surface or concave surface of distributor cam 9, receives trigger winding L and is located at and distributor cam 9 corresponding positions, referring to Fig. 6.Traditional mechanical contact-type circuit breaker also can be adopted in the thread switching control road, and the impulsive current of its control is atomic little, generally below several milliamperes, thereby the worry of contactless ablation.

The utility model compared with prior art has following advantage:

1, adopts the igniting of high-frequency spark bundle, overcome the conventional point firearm with a some spark The existing disadvantage of lighting a fire increases substantially lighting rate.

2, oil inflame is abundant, and oil-saving effect is remarkable, has greatly reduced each in the exhaust Plant harmful substance, reduced environmental pollution.

3, under powerful high-frequency spark bundle was lighted, the power of engine also was much improved, Thereby also improved the efficient of engine.

What 4, flow through in the ignition coil is high frequency electric, and the electric current of its primary coil is little, Maximum current only is that in 400mA, power consumption is littler during normal operation about 2A, Still can obtain reliably the high-energy spark bundle under the low pressure, engine start is easier.

5, coil turn is few, elementary need 20～50 circles of ignition coil, and wire diameter is thin, Thereby volume is little, and cost is low.

6, long-term work stable performance, long service life, not fragile.

7, versatility is good, applicable to the high-tension ignition of various vehicles.

8, structure is light and handy, is not subject to disturb, and does not have mechanical contact wearing and tearing, and production, adjustment and installation are all very easy.

Claims

1, a kind of automotive electronic igniter, constitute by thread switching control road and ignition circuit two-part, described ignition circuit comprises spark coil (5), it is characterized in that: described ignition circuit also comprises high frequency oscillator (3), its output inserts outlet line (4), the output contact fire coil (5) of described outlet line (4); Described thread switching control road comprises trigger (1), and it inserts outlet line (4) through amplifier (2); Described trigger (1) is arranged on automobile distributor controlled (8).

2, automotive electronic igniter as claimed in claim 1 is characterized in that: described high frequency oscillator (3) is made of time base integrated package IC1.

3, automotive electronic igniter as claimed in claim 1 or 2 is characterized in that: described outlet line (4) is made of Darlington transistor Q1.

4, automotive electronic igniter as claimed in claim 3, it is characterized in that: described trigger (1) is made of reflector (10) on the cam of being located at described distributor (8) (9) and the infrared emission receiver (13) on the distributor (8), the reflecting surface (7) of reflector (10) is located on the convex surface or concave surface of cam (9), and remaining part is made as black flour (6); Infrared emission receiver (13) is made of transmitter (11) and receiver (12), and described transmitter (11) is made of infrared light emission pipe D2; Described receiver (12) is made of phototransistor Q2.

5, automotive electronic igniter as claimed in claim 4 is characterized in that: described amplifier (2) is made of triode Q3, Q4, and the emitter of described Q2 is connected to the base stage of Q3, and the collector electrode of described Q3 is connected to the base stage of Q4.

6, automotive electronic igniter as claimed in claim 3 is characterized in that: described trigger (1) comprises the convex surface or the magnet on the concave surface (15) of the cam (9) of being located at distributor (8) and receiving coil L is located on the distributor (8) and the corresponding position of cam (9).