CN201078304Y - Automatic angle advancing igniter - Google Patents

Abstract

An automatic inlet angle igniter comprises a voltage stabilizing circuit, a triggering signal regulator circuit, an automatic inlet angle control circuit and an ignition executive circuit. The triggering signal regulator circuit is connected with a common mode input terminal of an operational amplifier IC1, and an inverted input terminal of the IC1 is connected with the voltage stabilizing circuit by voltage divisions R3 and R4. An output terminal of the IC1 is connected into the automatic inlet angle control circuit, which is divided into two circuits; wherein, one circuit is connected with a common mode input terminal of an IC3, after being connected into a electrifying and discharging circuit, which is composed of a R10 and a C5, through a C4 and a D7. The other circuit is connected with a common mode input terminal of an IC2. An inverted input terminal of the IC2 is connected with a potentiometer R9, after being connected with an output terminal of the IC2, and the potentiometer R9 is connected into an inverted input terminal of the IC3. An output terminal of the IC3 is connected with the ignition executive circuit. The ignition aiming off can be automatically and relatively adjusted according to the variation of the engine rotate speed, namely the automatic inlet angle.

Description

Automatic coming angle igniter

Technical field

The utility model relates to a kind of Iganition control system that is mainly used in motorcycle engine, particularly a kind of automatic coming angle igniter.

Background technique

Igniter is the vitals that motor needs optimization of matching, by optimization of matching, finds out the ignition advance angle of the igniter when engine power performance, Economy and the discharging that influences environmental protection reach the optimum state.Present widely used CDI ignition, ignition advance angle is changeless, or 2 step-by-step movement coarse adjustment, be not easy to determine the optimum igniting advance angle of motor, can not reflect motor performance difference when the different ignition advance angle of same rotating speed in real time.

Summary of the invention

The technical problems to be solved in the utility model is at the deficiencies in the prior art, has proposed a kind of automatic coming angle igniter that can make corresponding adjustment according to the variation of engine speed automatically.

The technical problems to be solved in the utility model is achieved through the following technical solutions, a kind of automatic coming angle igniter, comprise mu balanced circuit, trigger signal adjustment circuit, advance angle control circuit and firing action circuit automatically, be characterized in: trigger signal is adjusted circuit and is inserted operational amplifier IC ₁In-phase input end, operational amplifier IC ₁Inverting input by R ₃, R ₄Dividing potential drop and mu balanced circuit join, operational amplifier IC ₁Output terminal insert and to advance angle control circuit automatically, advance angle control circuit automatically and be divided into two-way, wherein lead up to C ₄, D ₇With by R ₁₀And C ₅The charging and discharging circuit of forming is joined, and the discharge end of above-mentioned charging and discharging circuit inserts operational amplifier IC ₃In-phase input end; Operational amplifier IC is inserted by delay control circuit in another road ₂In-phase input end, operational amplifier IC ₂Inverting input be connected with its output terminal the back with potentiometer R ₉Join potentiometer R ₉Insert operational amplifier IC ₃Inverting input, operational amplifier IC ₃Output terminal and firing action circuit join.

The technical problems to be solved in the utility model can also come to realize that further described delay control circuit is provided with isolating diode D by the following technical programs ₄, D ₅, isolating diode D ₄, D ₅Connect two timing circuit C respectively ₂, R ₅With C ₃, R ₆, above-mentioned two timing circuits are by isolation resistance R ₇, R ₈Operational amplifier IC is inserted in back in parallel ₂In-phase input end.

The technical problems to be solved in the utility model can also come by the following technical programs to realize that further firing action circuit is provided with full-wave voltage doubler and overvoltage limiting circuit to the circuit between the generator high-voltage charging winding that full-wave voltage doubler is by C ₈, D ₁₁, D ₁₂Form, the overvoltage limiting circuit is by reference diode D ₁₀, R ₁₂, controllable silicon SCR ₂Form.

The utility model is mainly used in motorcycle, or changes single cylinder or the multi-cylinder petrol engine that also is suitable for other occasion a little.It is controlled firing action circuit by advancing angle control circuit automatically, advances angle control circuit automatically and comprises two operational amplifiers, operational amplifier IC ₂As voltage follower, operational amplifier IC ₃Device as a comparison.Compared with prior art, its ignition signal voltage can be very low, and peak value＞0.1V can trigger igniting.Electronic spark advance amount (advance angle) can be made corresponding adjustment automatically according to the variation of engine speed, promptly enters the angle automatically.The leading top dead center of fire signal occurs, and through accurate delay, implements igniting constantly at the optimum igniting of setting.When leading top dead center 60 degree of setting fire signal occur, the high-end advancement amount that 50 remaining crank angles are arranged.Characteristic curve is the linear stepless smooth adjustment, and electronic spark advance amount dynamic range is roomy, and accomplishes omnidistance accurately tracking.Can under the various rotating speeds of motor, determine optimum ignition angle, on time igniting reliably.The dynamic range of electronic spark advance amount can be chosen setting as required, therefore, can be well closely cooperates with the petrol engine of various rotating speeds, just has the racing of the engine limitation function after setting maximum speed.Guarantee that motor is in operation in the safe speed of rotation scope all the time, avoid damaging motor because of the accident hypervelocity.This igniter has no special requirements to wave amplitude, the waveform of ignition signal voltage, and under situation about effectively avoiding interference, the signal voltage of mV level can reliably trigger igniting.Its firing characteristic is excellent, and comprehensive technical performance is more excellent.Can be used as the desirable upgrading regeneration product of CDI.

Description of drawings

Fig. 1 is a circuit theory sketch of the present utility model.

Embodiment

A kind of automatic coming angle igniter comprises mu balanced circuit 1, trigger signal adjustment circuit 7, advances angle control circuit 2 and firing action circuit 3 automatically, and the 12V positive supply is powered to igniter by filter circuit of pressure-stabilizing.From the fire signal (positive polarity is effective) of motor trigger winding, pass through isolation resistance R by the A point ₂, pass through D again ₁, D ₂Enter operational amplifier IC behind the amplitude limit ₁In-phase input end, inverting input is by R ₃, R ₄The reference potential of the given 0.1V of dividing potential drop (be threshold voltage, can be provided with lower or higher as required).

When fire signal arrives, the IC that uses of device as a comparison ₁Export a rectangular pulse immediately, be subjected to D ₃Wherein lead up to C behind the clamp amplitude limit ₄, D ₇To C ₅Dash once electricity, R ₁₀Be C ₅Discharge resistance, C ₅With R ₁₀Has bigger time constant, because discharge is very slow, so the C point voltage is level and smooth ripple stably.When engine speed changes from low to high, increase because dash the number of times of electricity in the unit time, thus C point current potential also along with rising, otherwise also anti-.And strict variation synchronization lifting of following engine speed, so, deliver to IC with this variable parameter as engine speed ₃In-phase input end.D is then passed through on another road ₄, D ₅To C ₂, C ₃Dash electricity rapidly to peak value, B point and its interlock equally also skip to peak level.

Generally, this moment, C point current potential can be lower than the B point, made IC ₃Be output as 0, get ready for next implementing igniting.Just when the maximum limit rotating speed, the C point voltage just can rise near or equal the amplitude of B point peak voltage, at this moment because of IC ₃Can not normally overturn to be directed at lights a fire not normal and speed limit.

After the fire signal, IC ₁Output fall to low level by high level, at this moment, dashed the C of electricity ₂, C ₃Pass through discharge resistance discharge separately respectively, C ₂With R ₅, C ₃With R ₆It is the delay circuit of two different time constants.The sawtooth wave of consequent two Different Slope is by isolation resistance R ₇, R ₈Deliver to voltage follower IC ₂, at R ₉On be mixed into needed waveform, the level that C is ordered during according to the maximum limit rotating speed is chosen identical amplitude (peak value) and is delivered to IC ₃Inverting input.Along with C ₂, C ₃Continuous discharge, the B point voltage progressively descends, when being lower than C point current potential after one section time-delay, IC ₃The high level of upset output immediately passes through C ₆Export a sharp pulse and trigger controllable silicon SCR conducting igniting, so far, finish igniting process one time, and so forth.

As seen: the sharp pulse of triggering controllable silicon SCR is delayed firing signal a period of time always, long and short and rotating speed motor of time-delay is inversely proportional to, in other words: the rotating speed low delay is long, the high time-delay of rotating speed is short, the crank angle of leading 60 degree of fire signal is converted into the time, and deducting time-delay with this promptly is the time of ignition that hope obtains.No matter what the rotating speed of motor done and changed, and the electronic spark advance amount all can be made corresponding adjustment following closely rapidly, exactly automatically, and all-the-way tracking in whole working speed scope is made stepless linearly adjust continuously.So, being provided with like this, the high-end electronic spark advance amount that provides leading 50 remaining crank angles if need bigger advancement amount, can obtain by changing corresponding setting and circuit parameter easily.

Firing action circuit is provided with full-wave voltage doubler and overvoltage limiting circuit to the circuit between the generator high-voltage charging winding, and full-wave voltage doubler is by C ₈, D ₁₁, D ₁₂Form, the overvoltage limiting circuit is by reference diode D ₁₀, R ₁₂, controllable silicon SCR ₂Form.The electric energy of generator high-voltage charging winding output is by D point access point firearm, and required energy when lighting a fire to supply with is during negative half period, through D ₁₁After the rectification to C ₈When charging, positive half cycle, and C ₈On voltage stack, pass through D with higher voltage ₉With high-voltage ignition coil to energy-storage capacitor C ₇Charging, this charging modes are the voltage multiplying rectifier charging, C ₇On can obtain higher charging voltage.In order to control or stable C ₇Charging voltage, be provided with by reference diode D ₁₀, R ₁₂, controllable silicon SCR ₂The overvoltage limiting circuit of forming is worked as C ₇Charging voltage when reaching limited amplitude, too high voltage will make voltage-stabiliser tube D ₁₀Conducting triggers controllable silicon SCR ₂Conducting bleeds off charging voltage ground connection, makes no longer to C ₇Continue to overcharge, therefore, C ₇Charging voltage always remain on certain amplitude, make ignition energy each time all remain on a constant numerical value.

Claims (3)

1. an automatic coming angle igniter comprises mu balanced circuit (1), trigger signal adjustment circuit (7), advances angle control circuit (2) and firing action circuit (3) automatically, and it is characterized in that: trigger signal is adjusted circuit (7) and inserted operational amplifier IC ₁In-phase input end, operational amplifier IC ₁Inverting input by R ₃, R ₄Dividing potential drop and mu balanced circuit (1) join, operational amplifier IC ₁Output terminal insert and to advance angle control circuit (2) automatically, advance angle control circuit (2) automatically and be divided into two-way, wherein lead up to C ₄, D ₇With by R ₁₀And C ₅The charging and discharging circuit of forming is joined, and the discharge end of above-mentioned charging and discharging circuit inserts operational amplifier IC ₃In-phase input end; Operational amplifier IC is inserted by delay control circuit (6) in another road ₂In-phase input end, operational amplifier IC ₂Inverting input be connected with its output terminal the back with potentiometer R ₉Join potentiometer R ₉Insert operational amplifier IC ₃Inverting input, operational amplifier IC ₃Output terminal and firing action circuit (3) join.

2. automatic coming angle igniter according to claim 1 is characterized in that: described delay control circuit (6) is provided with isolating diode D ₄, D ₅, isolating diode D ₄, D ₅Connect two timing circuit C respectively ₂, R ₅With C ₃, R ₆, above-mentioned two timing circuits are by isolation resistance R ₇, R ₈Operational amplifier IC is inserted in back in parallel ₂In-phase input end.

3. automatic coming angle igniter according to claim 1, it is characterized in that: firing action circuit (3) is provided with full-wave voltage doubler (5) and overvoltage limiting circuit (4) to the circuit between the generator high-voltage charging winding, and full-wave voltage doubler (5) is by C ₈, D ₁₁, D ₁₂Form, overvoltage limiting circuit (4) is by reference diode D ₁₀, R ₁₂, controllable silicon SCR ₂Form.

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