CN201241782Y - High energy electronic igniter of engine capable of adjusting self-advance angle for two times - Google Patents
High energy electronic igniter of engine capable of adjusting self-advance angle for two times Download PDFInfo
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- CN201241782Y CN201241782Y CNU200820187608XU CN200820187608U CN201241782Y CN 201241782 Y CN201241782 Y CN 201241782Y CN U200820187608X U CNU200820187608X U CN U200820187608XU CN 200820187608 U CN200820187608 U CN 200820187608U CN 201241782 Y CN201241782 Y CN 201241782Y
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Abstract
The utility model relates to an engine self-feed angle adjustable two-time high energy electronic igniter, which is mainly composed of a boost circuit (2) and an ignition circuit, wherein the boost circuit comprises a field transistor or a transistor (Q1) and a separate excitation chip (U1), the output end of the separate excitation chip (U1) is connected with the control end of the field transistor or the transistor (Q1), the field transistor or the transistor (Q1) is connected with the primary coil of a boost transformer (T), and the primary coil of the boost circuit is connected with the ignition circuit. The utility model adopts a separate excitation type square wave oscillation circuit, while the oscillation frequency is irrelative to the rotation speed and is only correlated to its parameters, therefore, the utility model can output high voltage and energy at any rotation speed, to confirm the high energy character of the electronic igniter under any rotation speed.
Description
Technical field the utility model relates to a kind of Motronic control maps ignition mechanism, particularly a kind of secondary high-energy electronic igniter with adjustable self-feeding angle of engine.
The circuit that the existing igniter of background technique is adopted generally comprises two-part: self-excitation booster circuit and high voltage discharge circuit, as shown in Figure 1.
The self-excitation booster circuit is characterized in that ignition energy is bigger when rotating speed is low, when high speed because the restriction of self oscillations frequency, its output high pressure also descends rapidly, thereby, auto-excitation type electric igniter ignition energy can constantly reduce along with the increase of rotating speed, to such an extent as to can't normally use after reaching certain speed.
The high voltage discharge circuit principle is: at first close unidirectional (two-way) controllable silicon S1, and utilize the self-excitation booster circuit that capacitor C 1 is charged to voltage to be U0.At this moment, if give S1 positive pulse drive signal, unidirectional (two-way) controllable silicon is opened, and then the primary air of capacitor C 1 unidirectional (two-way) controllable silicon S1 and high-tension transformer T1 just constitutes the loop, the T1 primary air produces electric current, by electromagnetic induction principle, just induce high pressure at the secondary winding of T1, the liquid mixed oil between the disruptive spark plug and discharging, though this kind discharge mode front end is a capacitor discharge, but the rear end still is an inductive discharge, because inductive discharge restriction itself, so energy is less.
Because the output pulse of S1 end is the pulse of fixed frequency, so other ignitions remain the fixed ignition degree of advance in the course of the work, its ignition advance angle can not be changed.
Model utility content technical problem to be solved in the utility model is, overcome the deficiency of above-mentioned existing procucts, and provide a kind of secondary high-energy electronic igniter with adjustable self-feeding angle of engine, with separated exciting electronic ignition circuit is powered, make it carry out twice discharge, improve the reliability of igniting and the combustion efficiency of motor fuel.
The technical solution of the utility model is as follows:
A kind of secondary high-energy electronic igniter with adjustable self-feeding angle of engine, mainly form by booster circuit and firing circuit, firing circuit connects the spark plug of motor, wherein, booster circuit comprises the boosting transformer that is connected with storage battery, it is characterized in that: described booster circuit also comprises field effect transistor or transistor and separate excitation chip, and the output terminal of separate excitation chip is connected with field effect transistor or transistorized control end, and field effect transistor or transistor also link to each other with the primary air of boosting transformer; The secondary winding of booster circuit is connected with firing circuit.
Described firing circuit comprises discharge circuit and the secondary discharge circuit that is formed in parallel, and wherein, No. one time discharge circuit is in series by controllable silicon, storage capacitor and transformer primary winding; The secondary discharge circuit links to each other with the secondary winding of high-tension transformer; Also comprise the bridge circuit that input end links to each other with the secondary winding of boosting transformer, the output terminal of bridge circuit links to each other with the input end of a discharge circuit by the D4 diode; The output terminal of bridge circuit links to each other with the input end of secondary discharge circuit by the D3 diode; Transformer primary winding links to each other with spark plug one end by the D1 diode, and the secondary discharge circuit also links to each other with this end of spark plug by the D2 diode.
Described separate excitation chip can be the PWM energy supply control module, and its input end is connected with the peripheral circuit of mainly being made up of resistance and electric capacity.
Described separate excitation chip can also be the square-wave generator of numeral or simulation integrated chip formation, and its input end is connected with the peripheral circuit of mainly being made up of resistance and electric capacity.
Described separate excitation chip can also be the single-chip microcomputer of realizing needed square signal or the programmable chip of realizing needed square signal.
Described separate excitation chip can also be the square wave generation circuit of being realized by PLD.
Described separate excitation chip can also be for realizing the circuit of being made up of discrete component of needed square signal, and described discrete component comprises electric capacity, resistance, triode and transformer.
Have interface on booster circuit and the firing circuit respectively with computer communication.
The utlity model has following characteristics:
(1), adopt the separated exciting square-wave oscillator circuit, its oscillation frequency and rotating speed are irrelevant, only with self relating to parameters, thereby can all maintain high voltage and energy output under the rotating speed arbitrarily, thereby can guarantee the high energy feature of ignition under any rotating speed.
(2), before S1 does not open, because the breakdown event of spark plug 5 intermediate liquid mixed oils spark plug 5 is not for opening circuit.By diode D1 buffer action, C2 can't constitute the loop as voltage source, thereby C2 keeps the energy storage state, this moment is if give controllable silicon S1 positive pulse drive signal, then unidirectional (two-way) controllable silicon S1 opens, by the gas mixture in the middle of the C1 discharge formation high-pressure ion arcing spark plug 5, under breakdown conditions, resistance between the spark plug 5 is very little, this moment, C2 just constituted the loop with spark plug 5, electric charge among the C2 just releases energy by the spark plug 5 after puncturing, energy among the C2 the capacitor discharge that all is used to light a fire into real, be its main discharging energy (inductive discharge is partly ignored), regulate the numerical values recited of C2 and U1, just can produce other high-energy electronic igniter of different-energy level.
(3), have communication interface to link to each other with computer, the user can measure in real time to rotating speed, and sets arbitrarily advancing the angle function curve certainly.
Description of drawings Fig. 1 is the circuit diagram of a kind of representative point firearm in the prior art.
Fig. 2 is a functional-block diagram of the present utility model.
Fig. 3 is circuit theory diagrams of the present utility model.
Fig. 4 is special chip UC3843 drive signal generation circuit figure.
Fig. 5 is that the NE555 chip signal produces circuit diagram.
Fig. 6 is single-chip microcomputer signal generating circuit figure.
Fig. 7 is CPLD signal generating circuit figure.
Fig. 8 is discrete component signal generating circuit figure.
Embodiment further specifies the utility model below in conjunction with the drawings and specific embodiments.
One, booster circuit.
Shown in Fig. 2,3, booster circuit 2 comprises the boosting transformer T that is connected with storage battery 1.Described booster circuit also comprises field effect transistor or transistor Q1 and separate excitation chip U1, and the output terminal of separate excitation chip U1 is connected with the control end of field effect transistor or transistor Q1, and field effect transistor or transistor Q1 also link to each other with the primary air of boosting transformer T; The secondary winding of booster circuit is connected with firing circuit.
What adopted is the separated exciting booster circuit, constitute the square wave that produces drive circuit by separated exciting chip and peripheral circuit, this square wave has higher oscillation frequency, in the design speed scope, its output energy and rotating speed are irrelevant, thereby all maintain constant high energy output in low speed and scope at a high speed.
Produce the drive signal of field effect transistor or transistor Q1 control end, promptly produce the square wave driving signal of certain frequency, following several way of realization is arranged:
(1), use dedicated PWM energy supply control module is realized for example UC3842, UC3843 etc., is the principle that example illustrates this generic module with UC3843, as shown in Figure 4.
The part that is connected with the PWM module is a peripheral circuit, comprising resistance R and capacitor C, the numerical value of wherein regulating RC can change the output frequency and the dutycycle of PWM module, signal is by the output of Tout1 end, the drive end of field effect transistor or transistor Q1 is opened or the closed pair direct current produces alternating signal.Be connected with pin VFB, ISEN for feedback loop can prevent overcurrent or overvoltage, play the purpose of protective circuit.
(2), utilize numeral commonly used or simulation integrated chip to constitute square-wave generator, as 555,74 family chips etc.555 to be the principle that example illustrates such chip, circuit as shown in Figure 5.
Changeable output frequency of numerical value and dutycycle, from the square wave of Vo end output certain frequency, the control end of field effect transistor or transistor Q1 becomes alternating signal with direct current signal, thereby at the designed high pressure of transformer secondary output coil output.
(3), utilize programmable chip programmings such as single-chip microcomputer (MCU) or ARM to realize needed square signal.With ATMEGA8 is the working principle that example illustrates such chip, as shown in Figure 6.
Programming just can realize the certain frequency square wave, and by the output of MOUT end, the control end of field effect transistor or transistor Q1 becomes alternating signal with direct current signal, thereby at the designed high pressure of transformer secondary output coil output.
(4), the circuit that utilizes PLD (CPLD or FPGA) to realize forms as shown in Figure 7.
Wherein CRYSTAL is million grades of active crystal oscillators, because its frequency is considerably beyond the frequency of transformer defined, thereby with on the relevant pin of CPLD (or FPGA), utilize the form of programming that it is carried out the frequency division processing, frequency division is to the square wave output of frequency that system requires, the control end of field effect transistor or transistor Q1 becomes alternating signal with direct current signal, thereby at the designed high pressure of transformer secondary output coil output.
(5), utilize discrete component commonly used such as electric capacity, resistance, triode, transformer to realize that circuit as shown in Figure 8.
Utilize this circuit just can produce the drive signal of certain frequency, the control end of field effect transistor or transistor Q1 becomes alternating signal with direct current signal, thereby at the designed high pressure of transformer secondary output coil output.
More than several modes all can realize the separated exciting square-wave oscillator circuit, its oscillation frequency and rotating speed are irrelevant, only with self relating to parameters, thereby can all maintain high voltage and energy output under the rotating speed arbitrarily, thereby can guarantee the high energy feature of ignition under rotating speed arbitrarily.
Two, firing circuit.
Still shown in Fig. 2,3, firing circuit comprises discharge circuit 4 and the secondary discharge circuit 3 that is formed in parallel, and wherein, discharge circuit is in series by the primary air of controllable silicon S1, storage capacitor C1 and high-tension transformer T1; The secondary discharge circuit links to each other with the secondary winding of high-tension transformer T1; Also comprise the bridge circuit B that input end links to each other with the secondary winding of boosting transformer T, the output terminal of bridge circuit B links to each other with the input end of a discharge circuit 4 by the D4 diode; The output terminal of bridge circuit B links to each other with the input end of secondary discharge circuit 3 by the D3 diode; The primary air of high-tension transformer T1 links to each other with spark plug 5 one ends by the D1 diode, and secondary discharge circuit 3 also links to each other with this end of spark plug 5 by the D2 diode.
A part is the circuit part that once discharges, principle as shown in Figure 3, different is to have in the T1 secondary winding isolating diode D1, D2 two isolated parts circuit respectively, and just capacitor C 1, C2 charge to voltage U 0, U1 to two-part circuit by diode D3, D4 respectively.Before S1 did not open, spark plug 5 was not for opening circuit because spark plug 5 intermediate liquid mixed oils are breakdown.By diode D1 buffer action, C2 can't constitute the loop as voltage source, thereby C2 keeps the energy storage state, this moment is if give controllable silicon S1 positive pulse drive signal, then unidirectional (two-way) controllable silicon S1 opens, by the gas mixture in the middle of the C1 discharge formation high-pressure ion arcing spark plug 5, under breakdown conditions, resistance between the spark plug 5 is very little, this moment, C2 just constituted the loop with spark plug 5, electric charge among the C2 just releases energy by the spark plug 5 after puncturing, energy among the C2 the capacitor discharge that all is used to light a fire into real, be its main discharging energy (inductive discharge is partly ignored), regulate the numerical values recited of C2 and U1, just can produce other high-energy electronic igniter of different-energy level.
Before the acting as of diode D1 prevented that the ion arc from producing, the electric charge among the C2 was released energy by the T1 secondary winding.Acting as at T1 of D2 produces ion arc moment, voltage will be volts up to ten thousand, value much larger than U1, for preventing that electric flux from reaching C2, so be set to D2 in the circuit, the characteristics that D2 has are the backward voltage that volts up to ten thousand are arranged, very big forward current, diode D1, D2 can be according to electric capacity charging polarity differences, adopt as shown in the figure direction or opposite direction.
Diode D3, D4 isolate striking and secondary energy storage live part respectively, make two-part charging unaffected.
Three, degrees of ignition advance is freely set.
Interface with computer communication is arranged on the igniter, computer terminal has control software, can carry out data communication with computer, and its function has three: one: the rotating speed that can measure motor, igniter can be uploaded to computer terminal with rotating speed, and computer terminal can show rotating speed; Two: computer terminal can be revised arbitrarily and the ignition advance angle of set point firearm and igniting trigger impulse polarity, and with advance angle, trigger impulse polarity information by reaching on the igniter under the interface; Three: igniter can the work of measuring point firearm constantly advance angle, and be uploaded to computer terminal by communication interface, computer can be shown advance angle, and compares by shown advance angle and shown advance angle, plays the purpose of correction.
Claims (8)
1, a kind of secondary high-energy electronic igniter with adjustable self-feeding angle of engine, mainly form by booster circuit (2) and firing circuit, firing circuit connects the spark plug (5) of motor, wherein, booster circuit (2) comprises the boosting transformer (T) that is connected with storage battery (1), it is characterized in that: described booster circuit (2) also comprises field effect transistor or transistor (Q1) and separate excitation chip (U1), the output terminal of separate excitation chip (U1) is connected with the control end of field effect transistor or transistor (Q1), and field effect transistor or transistor (Q1) also link to each other with the primary air of boosting transformer (T); The secondary winding of booster circuit is connected with firing circuit.
2, secondary high-energy electronic igniter with adjustable self-feeding angle of engine as claimed in claim 1, it is characterized in that: described firing circuit comprises a discharge circuit (4) and the secondary discharge circuit (3) that is formed in parallel, wherein, a discharge circuit (4) is in series by the primary air of controllable silicon (S1), storage capacitor (C1) and high-tension transformer (T1); The secondary discharge circuit links to each other with the secondary winding of high-tension transformer (T1); Also comprise the bridge circuit (B) that input end links to each other with the secondary winding of boosting transformer (T), the output terminal of bridge circuit (B) links to each other with the input end of a discharge circuit (4) by the D4 diode; The output terminal of bridge circuit (B) links to each other with the input end of secondary discharge circuit (3) by the D3 diode; The primary air of high-tension transformer (T1) links to each other with spark plug (5) one ends by the D1 diode, and secondary discharge circuit (3) also links to each other with this end of spark plug (5) by the D2 diode.
3, secondary high-energy electronic igniter with adjustable self-feeding angle of engine as claimed in claim 1 or 2 is characterized in that: described separate excitation chip (U1) is the PWM energy supply control module, and its input end is connected with the peripheral circuit of mainly being made up of resistance and electric capacity.
4, secondary high-energy electronic igniter with adjustable self-feeding angle of engine as claimed in claim 1 or 2, it is characterized in that: described separate excitation chip (U1) is the square-wave generator of numeral or simulation integrated chip formation, and its input end is connected with the peripheral circuit of mainly being made up of resistance and electric capacity.
5, secondary high-energy electronic igniter with adjustable self-feeding angle of engine as claimed in claim 1 or 2 is characterized in that: described separate excitation chip (U1) is the single-chip microcomputer of realizing needed square signal or the programmable chip of realizing needed square signal.
6, secondary high-energy electronic igniter with adjustable self-feeding angle of engine as claimed in claim 1 or 2 is characterized in that: the square wave generation circuit of described separate excitation chip (U1) for being realized by PLD.
7, secondary high-energy electronic igniter with adjustable self-feeding angle of engine as claimed in claim 1 or 2, it is characterized in that: described separate excitation chip (U1) is for realizing the circuit of being made up of discrete component of needed square signal, and described discrete component comprises electric capacity, resistance, triode and transformer.
8, secondary high-energy electronic igniter with adjustable self-feeding angle of engine as claimed in claim 1 or 2 is characterized in that: have the interface with computer communication on booster circuit (2) and the firing circuit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820187608XU CN201241782Y (en) | 2008-08-08 | 2008-08-08 | High energy electronic igniter of engine capable of adjusting self-advance angle for two times |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820187608XU CN201241782Y (en) | 2008-08-08 | 2008-08-08 | High energy electronic igniter of engine capable of adjusting self-advance angle for two times |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201241782Y true CN201241782Y (en) | 2009-05-20 |
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ID=40715079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820187608XU Expired - Fee Related CN201241782Y (en) | 2008-08-08 | 2008-08-08 | High energy electronic igniter of engine capable of adjusting self-advance angle for two times |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201241782Y (en) |
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2008
- 2008-08-08 CN CNU200820187608XU patent/CN201241782Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090520 Termination date: 20130808 |