CN203614297U - Boosted circuit for oil atomizer control of gasoline engine - Google Patents
Boosted circuit for oil atomizer control of gasoline engine Download PDFInfo
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- CN203614297U CN203614297U CN201320851742.6U CN201320851742U CN203614297U CN 203614297 U CN203614297 U CN 203614297U CN 201320851742 U CN201320851742 U CN 201320851742U CN 203614297 U CN203614297 U CN 203614297U
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Abstract
The utility model relates to a boosted circuit for oil atomizer control of a gasoline engine. The objective of the utility model is to design a boosted circuit which is used for providing starting voltage for different types of oil atomizers. The boosted circuit comprises a TL3843 chip, a first field effect tube, a resistor R6, a resistor R5, a capacitor C9, a capacitor C8, a resistor R4, a resistor R1, a resistor R2, a capacitor C6, a capacitor C7, a resistor R3, a inductor L, a diode D1, a capacitor C11 and a variable resistor R8. Compared with the prior art, the boosted circuit is characterized in that via the oil atomizer control system boosted circuit which is used for an atomizing test bed, stable direct-current voltage output from +12 V to +245 V can be achieved, and voltage requirements for driving the oil atomizer of the gasoline engine are satisfied.
Description
Technical field:
The utility model relates to gasoline engine fuel injection apparatus, further relates to petrol engine fuel injector control booster circuit.
Background technique:
Oil sprayer is the device that oil spout moment, fuel injection characteristic and fuel injection quantity in accordance with regulations sprays into fuel oil firing chamber under uniform temperature and pressure, the quality of its service behaviour directly has influence on the atomization combustion situation of fuel oil, and then affects the multiple performance index of motor including emission performance, power character, Economy.In the practical application of GDI motor, find, the service behaviour of oil sprayer can worsen along with time lengthening, need to carry out to single oil sprayer the research of service behaviour and atomization characteristics.Therefore, develop a set of oil sprayer control system simple efficient, that control accurate spraying experiment use essential.
The core component of electric-controlled fuel injector is solenoid valve, is exactly in fact to realize by the solenoid valve of control oil sprayer inside to the control of oil sprayer.Oil sprayer energising moment, its inner electromagnetic coil has electric current to pass through, and under the effect of electromagnetic induction, produces magnetic field, and the inner armature of oil sprayer is subject to the effect of magnetic force.When the magnetic force being subject to when armature is greater than the pretightening force of preloading spring, will drives on needle-valve and move, now oil nozzle is opened fuel oil is sprayed; When after oil sprayer power-off, needle-valve loses the effect of electromagnetic force, or the electric current that passes through of the oil sprayer internal electromagnetic coil magnetic force that is reduced to generation is while being not enough to overcome the pretightening force of preloading spring, and needle-valve moves down under the effect of pretightening force, oil nozzle is closed, and oil spout stops.
In oil sprayer working procedure, solenoid valve opens and closes at a high speed, and for meeting its dynamic response characteristic, desirable drive circuit of injector adopts Peak & Hold driving mode.Peak & Hold driving mode can realize by different drive circuits.The time dependent schematic diagram of driving current that Figure 1 shows that Peak & Hold driving mode, as seen from the figure, oil sprayer working procedure can be divided into three phases, is followed successively by: open stage, maintenance stage, dwell period.
Open stage: adopt higher driving voltage to make electromagnetic coil have larger electric current to pass through, open fast thereby produce larger electromagnetic force assurance solenoid valve.
In the maintenance stage: after fuel injector magnetic system is opened completely, magnetic air gap reduces, magnetic resistance reduces, and less electric current just can maintain open mode, and too high electric current can cause generating heat and burning oil sprayer.Therefore, driving voltage need to be reduced, to reduce driving current.Should guarantee that in the maintenance stage electric current is steady, the larger fluctuation of electric current may make closed electromagnetic valve as far as possible.
Dwell period: this stage should discharge rapidly the electrical potential energy in electromagnetic coil, thereby electric current in electromagnetic coil is reduced to 0, makes solenoid valve quick closedown, reaches the object of accurate control oil sprayer.
It should be noted that in open stage, to keeping in step transition, curent change should be tried one's best slowly, otherwise shut electromagnetic valve likely; At dwell period, electric current declines in electromagnetic coil, and The faster the better, to guarantee that solenoid valve cuts out rapidly, improves oil sprayer control accuracy.
Oil sprayer opening and closing time and oil sprayer design itself and driving principle are closely related, because oil sprayer type is different, roughly between 0.5～1.5ms.
At oil sprayer start-up time, higher driving voltage can make oil sprayer open fast, reduces injector opening time, and then guarantees good fuel spray characteristic.Because this injector control circuit is selected dual power supply mode, different from independent+12V power supply, need one+12V voltage is risen to a circuit arrangement of tens volts, therefore, need to design a booster circuit and provide cut-in voltage for oil sprayer.
Summary of the invention:
The utility model object is to design a booster circuit, for different model oil sprayer provides cut-in voltage.
Petrol engine fuel injector control booster circuit, comprising: TL3843 chip, and pin 5 ground connection of TL3843 chip, the pin 7 of TL3843 chip is connected with+12V power supply; The first field effect transistor; The resistance R 7, the capacitor C 10 that between TL3843 chip pin 1 and pin 2, are connected in parallel; Resistance R 6, one end is connected with TL3843 chip pin 2, the other end ground connection; Resistance R 5, one end is connected with the pin 3 of TL3843 chip, and the SQ1 end that the other end connects the first field effect transistor connects; Capacitor C 9, one end is connected with the pin 3 of TL3843 chip, the other end ground connection; Capacitor C 8, one end is connected with the pin 4 of TL3843 chip, the other end ground connection; Resistance R 4, one end is connected with the pin 4 of TL3843 chip, is connected with pin 8; Resistance R 1, one end ground connection, the other end is connected with the GQ1 end of the first field effect transistor; Resistance R 2, one end is connected with the pin 6 of TL3843 chip, and the other end is connected with the GQ1 end of the first field effect transistor; Capacitor C 6, two ends are connected with pin 5 and the pin 7 of TL3843 chip respectively; Capacitor C 7, one end is connected with the pin 8 of TL3843 chip, the other end ground connection; Resistance R 3, one end is connected with the SQ1 end of the first field effect transistor, the other end ground connection; Inductance L, two ends are connected with the DQ1 end of+12V power supply and the first field effect transistor respectively; Diode D1, two ends are connected with DQ1 end and the high-voltage output terminal of the first field effect transistor respectively; Capacitor C 11, one end ground connection, the other end is connected with high-voltage output terminal; Variable resistor R8, two ends are connected with the pin 2 of high-voltage output terminal and TL3843 chip respectively.
The parameter of described booster circuit is preferred: the numerical value of inductance L is more than or equal to 150uH, and be less than or equal to 300uH, the capacity of capacitor C 6 is 10uF, the capacity of capacitor C 7 is 0.01uF, the capacity of capacitor C 8 is 3300pF, the capacity of capacitor C 9 is 3300pF, the capacity of capacitor C 10 is 0.01uF, the capacity of capacitor C 11 is 470uF, the resistance of resistance R 1 is 10 kilo-ohms, the resistance of resistance R 2 is 100 Europe, the resistance of resistance R 3 is 0.25 Europe, the resistance of resistance R 4 is 10 kilo-ohms, the resistance of resistance R 5 is 100 Europe, the resistance of resistance R 6 is 10 kilo-ohms, the resistance of resistance R 7 is 150 kilo-ohms.
The utility model booster circuit with TL3843 chip produce the field effect transistor conducting of PWM ripple SC sigmal control or close.
Voltage in the resistance R 6 connecing on TL3843 chip pin 2 is feedback voltage, and size perseverance is 2.5V.The large I of output voltage changes by the resistance that regulates variable resistor R8, and the value that can be obtained output voltage V 0 by the dividing potential drop relation of R8, R6 is:
V0=2.5*（R8/R6+1）
In formula, V
0for booster circuit output voltage, R8, R6 are resistance.
The working procedure of circuit: after TL3843 powers on, high-voltage output terminal can be exported PWM ripple, PWM wave frequency is determined by its outer meeting resistance R4 and capacitor C 8.
In the time of R4>50k Ω, break-make frequency is:
f=1.72/（R4*C8）
In formula, f is TL3843 chip output PWM wave frequency.
PWM ripple is by field effect transistor IRF640 high speed conducting and close.In the time of the first field effect transistor conducting, the electric current of+12V power supply flows back to power supply ground through inductance L, sampling resistor R3; In the time that the first field effect transistor is closed ,+12V source current is cut off, and the instantaneous pressure electromotive force producing in inductance coil charges to capacitor C 11, and PWM ripple control the first field effect transistor repeatedly opens and closes charging process is carried out repeatedly.In the time that booster circuit output end voltage reaches predefined value, feed back to control chip by VFB pin, PWM ripple suspends, charging process is suspended, in the time that Voltage-output arrives lower than predefined value, PWM ripple works on and charges, and so repeatedly makes output voltage keep constant.
The utility model is with respect to the advantage of prior art:
Can the realize+12V of oil sprayer control system booster circuit that the spray testing platform of the utility model design is used is to the stable DC Voltage-output between+245V, and arrive+90V of be generally+50V of the needed driving voltage of petrol engine fuel injector, so control system is enough to meet the voltage requirements that petrol engine fuel injector drives.
Take embodiment's measured data as example, the utility model booster circuit output end voltage rises to the 65V time used from 0V and is about 46ms; In single spray process, when the spraying endurance is while being 10ms, supply power to booster circuit output end voltage from booster circuit to drive circuit of injector and return to the 65V time used and be about 44ms, can meet the requirement of spraying experiment Continuous Drive oil sprayer.
Oil sprayer driving current can reach 16A in open stage, keep stage control at 2.75A between 3.5A; Driving voltage can reach 65V in open stage, be 12V in the maintenance stage, above-mentioned value is all coincide well with driving current and the voltage waveform of target oil sprayer regulation, and the high speed that can realize reliably fuel injector magnetic system opens and closes, and reaches the object of accurate control oil sprayer.
Accompanying drawing explanation:
Fig. 1 represents oil sprayer driving mode schematic diagram; In figure, abscissa represents the time, is open stage, maintenance stage, dwell period from left to right successively; Y coordinate represents oil sprayer driving current.
Fig. 2 represents embodiment's overall structure schematic diagram; In figure, 1001 represent communicating circuit, and 101 represent PC, and 102 represent electrical level conversion circuit, and 103 represent ECU, and 104 represent booster circuit, and 105 represent drive circuit of injector, and 106 represent oil sprayer, and 107 represent high-speed camera.
Fig. 3 represents communicating circuit structural drawing in embodiment; In figure, 101 represent PC, and 102 represent electrical level conversion circuit, and 103 represent ECU; The corresponding C1+ pin of pin 1 of electrical level conversion circuit, the corresponding V+ pin of pin 2, the corresponding C1-pin of pin 3, the corresponding C2+ pin of pin 4, the corresponding C2-pin of pin 5, the corresponding V-pin of pin 6, the corresponding T2OUT pin of pin 7, the corresponding R2IN pin of pin 8, the corresponding R2OUT pin of pin 9, the corresponding T2IN pin of pin 10, the corresponding GND pin of pin 15, the corresponding Vcc pin of pin 16; The corresponding RXD pin of pin 2 of ECU, the corresponding TXD pin of pin 3 of ECU, the corresponding Vcc pin of pin 7 of ECU, the corresponding GND pin of pin 8 of ECU, pin 5 respective signal 1 pins of ECU, pin 12 respective signal 2 pins of ECU, pin 13 respective signal 3 pins of ECU.
Fig. 4 represents boost circuit structure figure in embodiment; In figure, 108 represent TL3843 chip; The corresponding COMP pin of pin 1 of TL3843 chip, the corresponding VFB pin of pin 2, the corresponding ISENSE pin of pin 3, the corresponding RT/CT pin of pin 4, the corresponding GND pin of pin 5, the corresponding OUTPUT pin of pin 6, the corresponding Vcc pin of pin 7, the corresponding REF pin of pin 8.
Fig. 5 represents petrol engine fuel injector drive circuit in embodiment; In figure, 106 represent oil sprayer, and 107 represent high-speed camera, and 601 represent the first photo coupler, and 602 represent the second photo coupler, and 701 represent that IR2101 type drives chip; IR2101 type drives the corresponding Vcc pin of pin 1 of chip, the corresponding HIN pin of pin 2, the corresponding COM pin of pin 4, the corresponding VS pin of pin 6, the corresponding HO pin of pin 7, the corresponding VB pin of pin 8.
Fig. 6 represents oil sprayer driving voltage change with time in embodiment; Abscissa represents the time, and unit is millisecond; Y coordinate represents oil sprayer driving voltage, and unit is volt.
Fig. 7 represents oil sprayer driving current change with time in embodiment; Abscissa represents the time, and unit is millisecond; Y coordinate represents oil sprayer drive current voltage, and unit is ampere.
Fig. 8 represents booster circuit output end voltage rule over time in embodiment; Abscissa represents the time, and unit is millisecond; Y coordinate represents booster circuit output end voltage, and unit is volt.
Fig. 9 represents booster circuit output end voltage rule over time in single oil spout in embodiment; Abscissa represents the time, and unit is millisecond; Y coordinate represents booster circuit output end voltage, and unit is volt.
Figure 10 represents in embodiment that booster circuit output end voltage is with the Changing Pattern of resistance value; Abscissa represents the time, and unit is millisecond; Y coordinate represents booster circuit output end voltage, and unit is volt.
Embodiment:
Embodiment:
As shown in Figure 2, engine fuel injector analog control system, comprising: PC 101, and the electrical level conversion circuit 102 being connected in series with PC, is converted into the level signal of PC RS232 serial communication the Transistor-Transistor Logic level signal of single-chip microcomputer; The ECU electronic control unit 103 being connected in series with electrical level transferring chip; The drive circuit of injector 105 being connected in series with ECU electronic control unit, the booster circuit 104 being connected with drive circuit respectively, oil sprayer 106; The high-speed camera 107 being connected in series with ECU electronic control unit.
As shown in Figure 5, described petrol engine fuel injector drive circuit 105 comprises: IR2101 type drives chip, described IR2101 type drive chip pin 1 with+12V power supply is connected, pin 2 is connected with the device pin 4 of the first photoelectric coupling, pin 4 ground connection;
The first photo coupler, its pin 2 ground connection;
The second photo coupler, its pin 2 ground connection;
The second field effect transistor, adopts IFR640, and the DQ2 end of the second field effect transistor is connected with high voltage input end, SQ2 end drives the pin 6 of chip to be connected with IR2101 type;
The 3rd field effect transistor, adopts IFR640, the SQ3 end ground connection of the 3rd field effect transistor;
Diode D2, its two ends respectively with IR2101 type drive chip pin 8 and+12V power supply is connected;
Diode D3;
The first Schottky diode M1, its pin 1 ground connection, pin 2 and diode D3 are anodal to be connected, and pin 3 is connected with+12V power supply;
The second Schottky diode M2, its pin 1 is connected with the SQ2 end of the second field effect transistor, pin 2 is connected with diode D3 positive pole, pin 3 is connected with the SQ2 end of the second field effect transistor;
Resistance R 11, two ends respectively with the pin 5 of the first photo coupler and+12V power supply is connected;
Resistance R 12, one end is connected with the pin 4 of the first photo coupler, the other end ground connection;
Resistance R 13, two ends respectively with the pin 5 of the second photo coupler and+12V power supply is connected;
Resistance R 15, one end is connected with the pin 4 of the second photo coupler, the other end ground connection;
Resistance R 17, two ends are connected with the DQ3 end of the 3rd field effect transistor and the negative pole of diode D3 respectively;
The terminal of described oil sprayer are connected with the pin 2 of the first Schottky diode M1 and the DQ3 of the 3rd field effect transistor end respectively.
The capacity of above-mentioned petrol engine fuel injector drive circuit capacitor C 12 is 10uF, and the capacity of capacitor C 13 is 10uF, and the capacity of capacitor C 14 is 470uF, the resistance of resistance R 9 is 150 Europe, the resistance of resistance R 10 is 150 Europe, and the resistance of resistance R 10 is 150 Europe, and the resistance of resistance R 11 is 5 kilo-ohms, the resistance of resistance R 12 is 10 kilo-ohms, the resistance of resistance R 13 is 5 kilo-ohms, and the resistance of resistance R 13 is 10 kilo-ohms, and the resistance of resistance R 15 is 150 Europe, the resistance of resistance R 16 is 150 Europe, and the resistance of resistance R 17 is 1 kilo-ohm.
As shown in Figure 4, described booster circuit comprises:
TL3843 chip, pin 5 ground connection of TL3843 chip, the pin 7 of TL3843 chip is connected with+12V power supply;
The first field effect transistor, adopts IFR640;
The resistance R 7, the capacitor C 10 that between TL3843 chip pin 1 and pin 2, are connected in parallel;
Inductance L, two ends are connected with the DQ1 end of+12V power supply and the first field effect transistor respectively;
Diode D1, two ends are connected with DQ1 end and the high-voltage output terminal of the first field effect transistor respectively;
Capacitor C 11, one end ground connection, the other end is connected with high-voltage output terminal;
Variable resistor R8, two ends are connected with the pin 2 of high-voltage output terminal and TL3843 chip respectively.
The numerical value of above-mentioned booster circuit inductance L is 300uH, the capacity of capacitor C 6 is 10uF, the capacity of capacitor C 7 is 0.01uF, the capacity of capacitor C 8 is 3300pF, the capacity of capacitor C 9 is 3300pF, the capacity of capacitor C 10 is 0.01uF, the capacity of capacitor C 11 is 470uF, the resistance of resistance R 1 is 10 kilo-ohms, and the resistance of resistance R 2 is 100 Europe, and the resistance of resistance R 3 is 0.25 Europe, the resistance of resistance R 4 is 10 kilo-ohms, the resistance of resistance R 5 is 100 Europe, and the resistance of resistance R 6 is 10 kilo-ohms, and the resistance of resistance R 7 is 150 kilo-ohms.
As shown in Figure 3, described electrical level transferring chip adopts MAX232 chip, and ECU adopts ATMEGA8 chip, pin 7, the pin 8 of electrical level conversion circuit are connected with computer by 9 needle serial ports, pin 15 ground connection, pin 9 is connected with the RXD port of ECU, and pin 10 is connected with the TXD port of ECU;
+ 5V power supply, is connected with the pin 16 of electrical level transferring chip.
The above-mentioned capacity of stating capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4, capacitor C 5 is 10uF.
Working procedure is as follows:
With 9 needle serial port line connecting circuit board and computers, connect the line trigger signal between circuit board and high-speed camera, open the control interface of writing with VB on computer and regulate as requested automatically controlled parameter for different oil sprayers, on circuit board+12V and+connect respectively+12V of 5V power supply terminal and+5V power supply.
After circuit board connection+12V power supply, booster circuit is started working, and the DC electrical source voltage of+12V is elevated to the needed magnitude of voltage of oil sprayer open stage.TL3843 chip output PWM ripple carrys out rapidly opened and closed the first field effect transistor, and its frequency is determined by resistance R 4 and C8.In the time of the first field effect transistor conducting ,+12V source current is got back to ground through inductance L, the first field effect transistor and resistance R 3; In the time of the first not conducting of field effect transistor, this road disconnects; In the moment disconnecting, inductance L produces high-tension induction electromotive force, charges to capacitor C 11 through diode D1; Capacitor C 11 voltages determine by variable resistor R8 resistance, and by regulating variable resistor R8 can obtain required high voltage, in the time that in capacitor C 11, voltage reaches required value, by feedback, TL3843 chip stops the output of PWM ripple, and charging finishes; In the time that in capacitor C 11, voltage is lower than required value, TL3843 chip output PWM ripple continues to charge to capacitor C 11, so repeatedly, reaches the object of boosting.
Take single injection event as example, introduce the working procedure of drive circuit of injector.After setting the automatically controlled parameter at the control interface that VB writes, click START button, VB is computerized to be sent control parameter signal by 9 needle serial ports, be the Transistor-Transistor Logic level of ECU on circuit board by voltage transitions chip by RS232 level conversion on computer afterwards, control signal is sent to ECU; After ECU receives signal, through the C programmer processing of internal composition, output signal 1, signal 2, signal 3;
As Fig. 5, before oil sprayer is opened, before the t1 moment, signal 1, signal 2, signal 3 are low level, and now drive circuit of injector and high-speed camera are not worked; In oil sprayer open stage, in the t2 moment, ECU sends high level signal, and signal 1, signal 2, signal 3 are high level; Signal 1 high level drives chip to carry out conducting the second field effect transistor through the first photo coupler control IR2101 type; Synchronous signal 2 high level carry out conducting the 3rd field effect transistor through the second photo coupler; Now, the electric current of high voltage input end is got back to ground through the second field effect transistor, the second Schottky diode M2, oil sprayer internal electromagnetic coil, the 3rd field effect transistor; The instantaneous large-current that high voltage provides can accelerate unlatching the oil spout of oil sprayer, and the electrical level rising of synchronous signal 3 starts to take pictures along triggering high-speed camera, after oil sprayer is opened, enters the maintenance stage.
Keep the stage at oil sprayer, from the t2 moment, signal 1 is low level, the second not conducting of field effect transistor, and high voltage does not participate in the control that oil sprayer keeps the stage, from the t2 moment, signal 2 is PWM ripple signal, one section of low level that signal 2 starts makes the 3rd not conducting of field effect transistor, impel large electric current in oil sprayer electromagnetic coil to decline, high level conducting the 3rd field effect transistor of signal 2 in the time dropping to certain value, the electric current of now+12V power supply is through the first Schottky diode M1, oil sprayer internal electromagnetic coil, the 3rd field effect transistor is got back to ground, in oil sprayer electromagnetic coil, electric current moment increases during this period, in the time increasing to certain value, one section of low level of signal 2 makes the 3rd not conducting of field effect transistor, so repeatedly, the unlatching that utilizes PWM ripple control+12V power supply to power to keep oil sprayer to oil sprayer electromagnetic coil, the dutycycle of PWM ripple (is a2, the length of a3) the automatically controlled parameter of controlling interface by adjusting controls.
At oil sprayer dwell period, in the t3 moment, signal 1, signal 2, signal 3 are low level, the second field effect transistor, the 3rd all not conductings of field effect transistor, high voltage and+all not conductings of 12V voltage; At the 3rd field effect transistor turn-off transient, oil sprayer internal electromagnetic coil produces induction electromotive force and stops oil sprayer to be closed, now, induction electromotive force electric current is through the closed-loop path moment consumed energy of oil sprayer internal electromagnetic coil, resistance R 17, diode D2 composition, guarantees that oil sprayer moment closes.
In Fig. 5, a1 and a4 are respectively high voltage operation time span and oil sprayer fuel injection pulsewidth, control the automatically controlled parameter in interface control by adjusting.
Claims (2)
1. petrol engine fuel injector control booster circuit, is characterized in that, comprising:
TL3843 chip, pin 5 ground connection of TL3843 chip, the pin 7 of TL3843 chip is connected with+12V power supply;
The first field effect transistor;
The resistance R 7, the capacitor C 10 that between TL3843 chip pin 1 and pin 2, are connected in parallel;
Resistance R 6, one end is connected with TL3843 chip pin 2, the other end ground connection;
Resistance R 5, one end is connected with the pin 3 of TL3843 chip, and the SQ1 end that the other end connects the first field effect transistor connects;
Capacitor C 9, one end is connected with the pin 3 of TL3843 chip, the other end ground connection;
Capacitor C 8, one end is connected with the pin 4 of TL3843 chip, the other end ground connection;
Resistance R 4, one end is connected with the pin 4 of TL3843 chip, is connected with pin 8;
Resistance R 1, one end ground connection, the other end is connected with the GQ1 end of the first field effect transistor;
Resistance R 2, one end is connected with the pin 6 of TL3843 chip, and the other end is connected with the GQ1 end of the first field effect transistor;
Capacitor C 6, two ends are connected with pin 5 and the pin 7 of TL3843 chip respectively;
Capacitor C 7, one end is connected with the pin 8 of TL3843 chip, the other end ground connection;
Resistance R 3, one end is connected with the SQ1 end of the first field effect transistor, the other end ground connection;
Inductance L, two ends are connected with the DQ1 end of+12V power supply and the first field effect transistor respectively;
Diode D1, two ends are connected with DQ1 end and the high-voltage output terminal of the first field effect transistor respectively;
Capacitor C 11, one end ground connection, the other end is connected with high-voltage output terminal;
Variable resistor R8, two ends are connected with the pin 2 of high-voltage output terminal and TL3843 chip respectively.
2. petrol engine fuel injector control booster circuit according to claim 1, it is characterized in that, the numerical value of described inductance L is more than or equal to 150uH, and be less than or equal to 300uH, the capacity of capacitor C 6 is 10uF, the capacity of capacitor C 7 is 0.01uF, the capacity of capacitor C 8 is 3300pF, the capacity of capacitor C 9 is 3300pF, the capacity of capacitor C 10 is 0.01uF, the capacity of capacitor C 11 is 470uF, the resistance of resistance R 1 is 10 kilo-ohms, the resistance of resistance R 2 is 100 Europe, the resistance of resistance R 3 is 0.25 Europe, the resistance of resistance R 4 is 10 kilo-ohms, the resistance of resistance R 5 is 100 Europe, the resistance of resistance R 6 is 10 kilo-ohms, the resistance of resistance R 7 is 150 kilo-ohms.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320851742.6U CN203614297U (en) | 2013-12-16 | 2013-12-16 | Boosted circuit for oil atomizer control of gasoline engine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320851742.6U CN203614297U (en) | 2013-12-16 | 2013-12-16 | Boosted circuit for oil atomizer control of gasoline engine |
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| CN203614297U true CN203614297U (en) | 2014-05-28 |
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| CN201320851742.6U Withdrawn - After Issue CN203614297U (en) | 2013-12-16 | 2013-12-16 | Boosted circuit for oil atomizer control of gasoline engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711626A (en) * | 2013-12-16 | 2014-04-09 | 天津大学 | Control voltage-boosting circuit of gasoline engine fuel injector |
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2013
- 2013-12-16 CN CN201320851742.6U patent/CN203614297U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711626A (en) * | 2013-12-16 | 2014-04-09 | 天津大学 | Control voltage-boosting circuit of gasoline engine fuel injector |
| CN103711626B (en) * | 2013-12-16 | 2015-12-09 | 天津大学 | Petrol engine fuel injector controls booster circuit |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140528 Effective date of abandoning: 20151209 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |