CN101033715A - Fuel ejection device and abnormity judgement method for the same - Google Patents
Fuel ejection device and abnormity judgement method for the same Download PDFInfo
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- CN101033715A CN101033715A CNA2006101398628A CN200610139862A CN101033715A CN 101033715 A CN101033715 A CN 101033715A CN A2006101398628 A CNA2006101398628 A CN A2006101398628A CN 200610139862 A CN200610139862 A CN 200610139862A CN 101033715 A CN101033715 A CN 101033715A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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Abstract
A fuel jetting device can correctly detects the status of an accumulator, supervise the user to maintain the accumulator and prevent the circumstance that engine is abnormal and stop. The fuel jetting device includes a fuel jetting module (1) which has the function of making a plunger to do reciprocating movement by electrifying a solenoid 1a, sucking the fuel and pressing the fuel to jet; a control unit (2) for supplying drive signal to the fuel jetting module 1; a generator (3); and an accumulator (5). In the fuel jetting device, when the solenoid (1a) is conductive and it is at the conductive status for prescribed time, the accumulator voltage can be detected by an accumulator voltage detecting voltage circuit (16), the accumulator voltage is compared with a prescribed value by an accumulator status judge unit (8a) to judge the status of the accumulator, then the judge result is displayed on an accumulator status display lamp (18).
Description
Technical field
The invention relates to the fuel injection system of the motor that uses the fuel jet module and its abnormality judgment method, it for example is used in the fuel injection control of two-wheel vehicle used motor, by energising moves reciprocatingly plunger to solenoid, has the function that sucks fuel, pressurized jet.
Background technique
According to the rotating speed and the load calculation fuel feed of motor and Fuelinjection nozzle is provided in the electronic control fuel injection device of drive signal, known have a kind of electromagnetic force of utilizing to make plunger move reciprocatingly, suck the fuel fuel jet module of pressurized jet again at control unit.This fuel jet module is such work, promptly according to the drive signal that is given by control unit solenoid is switched on, and plunger pressurizes fuel, ejects with the fuel pressure of stipulating.If stop the energising to solenoid, then plunger is rolled back by spring, sucks fuel used when next time spraying simultaneously.
Use the fuel injection system of fuel jet module, with the pressurization of carrying out fuel with petrolift and pressure regulator and pressure regulation, compare with the fuel injection system of the mode of nozzle ejection pressurized fuel, it is few and owing to the fuel jet module is just just switched on when spraying and reduced the advantage of mean consumption power to have structure component again.Therefore, be specially adapted to the lower small-sized two-wheel car of ability of generator and storage battery.
As the fuel injection method that uses this fuel jet module, disclosed a kind of technology, promptly for example, after the beginning driving fuel is sprayed the solenoid of usefulness, detect current value in the moment through scheduled time, based on this checkout value, or based on this checkout value and the driving pulse width that requires according to required fuel quantity, find the solution the correction value of pulse width, use this correction value to increase and decrease actual driving pulse width and revise, thus reduce since coil temperature etc. to the influence (with reference to patent documentation 1) of fuel injection amount.
In addition, solenoid drive unit as this fuel jet module, disclosed a kind of technology with following apparatus, this device is for example when the electric current that cuts off solenoid makes it stop to drive, temporarily be stored into the power that stores in the solenoid in the capacitor, when driving solenoid once again, emit the power of these storages, offer solenoid (with reference to patent documentation 2).
[patent documentation 1] spy opens 2003-113732 communique (the 2nd page, Fig. 3)
[patent documentation 2] spy opens 2003-49687 communique (the 2nd page, Fig. 1)
In the fuel injection system of using the fuel jet module, though because just energising when fuel sprays so reduced mean consumption power, but has very big electric current to flow through when spraying.For example, when the resistance value of the solenoid that designs the fuel jet module was 1.5 Ω, if drive with battery tension 14V, then according to the driving pulse width, respective streams was crossed the electric current of 4～9A.
If storage battery is under discharge condition and deterioration state, then can not get the necessary power of driving fuel jet module, the fuel feed of supply engine will reduce, and cause the operational situation of motor will become undesired.In addition, under battery discharging state and deterioration state, also sometimes because the driving of fuel jet module, and the voltage of storage battery is reduced, provide the control unit of drive signal normally not work to the fuel jet module, motor can not remain in operation.
In the fuel injection system in the past shown in the above-mentioned patent documentation, can not judge the discharge condition of storage battery and the device of deterioration state rightly because do not possess to have, so the problem that can not correctly monitor battery condition is arranged.Particularly when being used for the small-sized two-wheel car, because the generating capacity of generator is little, and the capacity of storage battery is also little, thus for fear of above-mentioned problem, must strengthen management for storage battery, but the general user is difficult to carry out the management of daily storage battery.
The present invention proposes in order to solve the above problems just, its purpose is to provide a kind of fuel injection system, the control unit of this fuel injection system is correctly monitored the state of storage battery, in addition, supervise the user to carry out the maintenance of storage battery, prevent the situation that motor is undesired and motor stops in advance.
Summary of the invention
Fuel injection system related to the present invention comprises to have and utilizes the through and off of the electric current that flows into solenoid to make plunger move reciprocatingly, suck the fuel jet module of the function of fuel pressurized jet; Come the fuel jet module is provided the control unit of drive signal according to the operational situation of motor; The generator that utilizes the rotation of motor to generate electricity; And the storage battery of storage power, in this fuel injection system, means) and battery condition judging unit (Japanese: means) in control unit, has battery tension detection part (Japanese:, when the drive signal of solenoid be conducting and under the on state through behind the scheduled time, utilize the battery tension detection part to detect the voltage of storage battery, utilize the battery condition judging unit to come comparison battery tension and specified value, thereby judge the state of storage battery, at display unit (Japanese: means) go up the result who shows judgement.
In addition, in control unit, has solenoid coil current detection part (Japanese: means) with the battery condition judging unit, when the drive signal of solenoid be conducting, under the on state through behind the scheduled time, utilize the solenoid coil current detection part to detect the electric current of solenoid, utilize the battery condition judging unit to come comparison solenoid coil current and specified value, thereby judge the state of storage battery, on display unit, show the result who judges.
In addition, in control unit, have battery tension detection part and solenoid coil current detection part, and battery condition judging unit, when the drive signal of solenoid is conducting, after under on state, passing through scheduled time, utilize the battery tension detection part to detect the voltage of storage battery, utilize the solenoid coil current detection part to detect the electric current of solenoid simultaneously, utilize the battery condition judging unit to compare according to calculated value and the specified value that battery tension and solenoid coil current calculate, thereby judge the state of storage battery, on display unit, show the result who judges.
In addition, the abnormality judgment method of fuel injection system related to the present invention is to utilize the fuel injection system of above-mentioned such structure to judge the unusual of storage battery.
Again in addition, in control unit, have battery tension detection part and battery condition judging unit, utilize the battery tension detection part detect when the drive signal of solenoid when disconnecting battery tension and the drive signal of solenoid be conducting and under the on state through the battery tension behind the scheduled time, utilize the battery condition judging unit that the difference and the specified value of detected two battery tensions are compared again, judge the state of storage battery, on display unit, show the result who judges.
According to fuel injection system of the present invention, because when the drive signal of solenoid be conducting, under the on state through behind the scheduled time, utilize the battery tension detection part to detect the voltage of storage battery, utilize the battery condition judging unit that detected battery tension and specified value are compared, judge the state of storage battery, on display unit, show the result who judges, therefore judge the abnormal state of storage battery with the battery tension in the solenoid energising, so can detect the very high storage battery abnormal state of precision.In addition, because the abnormal state of storage battery is visual, so can before causing the undesirable condition that motor is undesired and motor stops, passing on this abnormal state to the user.
In addition, because be drive signal when solenoid be conducting and under the on state through behind the scheduled time, utilize the solenoid coil current detection part to detect the electric current of solenoid, and utilize the battery condition judging unit that detected solenoid coil current and specified value are compared, judge the state of storage battery, on display unit, show the result who judges, therefore can judge the unusual of storage battery with the solenoid coil current in the solenoid energising, so can obtain the unusual detection of the higher storage battery of precision.
In addition, because be that drive signal when solenoid is conducting, and after under on state, passing through scheduled time, utilize the battery condition judging unit, according to utilizing the detected battery tension of battery tension detection part, and utilize the detected solenoid coil current of solenoid coil current detection part to calculate, and the calculated value that will calculate and specified value compare, judge battery condition, and show, so can judge the state of storage battery according to the internal resistance of storage battery, provide a kind of deterioration for storage battery to carry out the fuel injection system that battery condition is judged with highi degree of accuracy more, or the abnormality judgment method of fuel injection system.
In addition, because be if when the drive signal of solenoid is disconnection, then the drive signal of solenoid be conducting and under the on state through behind the scheduled time, carry out the detection of battery tension, judge the state of storage battery by the difference of detected two battery tensions, and show, therefore can remove the influence that the battery tension of solenoid when no electric circuit changes, and the reduction of judgement battery tension, so can obtain the judgement of more accurate battery condition.
Description of drawings
Fig. 1 is the structural drawing of the fuel injection system in example 1～example 4 of the present invention.
Fig. 2 is the solenoid drive signal in example 1～example 4 of the present invention and the oscillogram of solenoid coil current and battery tension.
Label declaration
1. fuel jet module
1a. solenoid
2. control unit
3. generator
4. regulator
5. storage battery
6,11. diodes
7. detect the resistance that electric current is used
8. microcomputer
8a. battery condition judging unit
9. solenoid Drive and Control Circuit
10. drive the FET that solenoid is used
12. capacitor
13. charge/discharge control circuit
14. the FET of control discharge usefulness
15. solenoid coil current testing circuit
16. power sense circuit
17. display lamp drive circuit
18. battery condition display lamp
Embodiment
Example 1
What Fig. 1 represented is the structural drawing of fuel injection system of the present invention.Fuel injection system comprises to have with electromagnetic force to be carried from the fuel jet module 1 of the plunger type pump with cyclic electromagnetic drive of the fuel of fuel tank (not have expression the figure) introducing as driving source, pressure; Fuel injection system is given the control unit 2 of drive signal based on the operating condition of motor (not having expression among the figure); Be installed in the generator 3 that rotation on the bent axle of motor, that utilize it is generated electricity; The regulator 4 of optiumum control generating voltage; And the storage battery 5 that stores the power of sending out.
Above-mentioned fuel jet module 1 has the solenoid 1a that plunger (do not have among the figure expression) is carried out Electromagnetic Drive, and the end of solenoid 1a is connected with storage battery 5 by the diode 6 that prevents adverse current and use; The switching element of the other end by this circuit, be the FET10 that uses of following driving solenoid and detect the resistance 7 that electric current uses and be connected with the ground connection side.
In addition, be provided with the solenoid drive circuit that possesses control discharge circuit 13 that diode 11 that the adverse current of preventing uses and capacitor 12 and control capacitor 12 discharges are arranged and the FET14 of control discharge usefulness, the FET10 that makes it possible to use when the driving solenoid is when converting shutoff to from conducting, the electric current that flows among the solenoid 1a temporarily is stored, and the initial stage that the solenoid next time drives is utilized this power circuit circuit.The instruction that control discharge circuit 13 is accepted from microcomputer 8.
Again in addition, possess have be the solenoid coil current detection part solenoid coil current testing circuit 15, be the power sense circuit 16 of battery tension detection part and be the display lamp drive circuit 17 and battery condition display lamp 18 of display unit.In addition, in microcomputer 8, possess battery condition judging unit 8a described later is arranged.
Below, utilize conducting, the action of disconnection and the relation of solenoid coil current and battery tension of solenoid 1a of the fuel injection system of the above-mentioned such structure of description of drawings.What Fig. 2 (a) represented is the oscillogram of solenoid drive signal waveform, and (b) expression is the oscillogram of solenoid coil current waveform, and (c) expression is the oscillogram of battery tension waveform.What the solid line among the figure was represented is accumulator positive situation often, and dotted line is represented is the situation of storage battery described later when unusual.In addition, though be superimposed with the generating fluctuation voltage of multipolar generator, in Fig. 2, omitted fluctuation voltage with the battery tension of reality.In addition, establishing capacitor 12 has utilized last turn-on action to store electric energy.
At first, illustrate according to common controlling method.The instruction that obtains from microcomputer 8 is sent to solenoid controlling and driving circuit 9, and according to instruction, the FET10 that solenoid drives usefulness switches to shutoff from conducting.Microcomputer 8 is sending the drive controlling instruction of this solenoid Drive and Control Circuit 9 to, transmits signal also for simultaneously the circuit 13 of control discharge, makes the FET14 conducting of control discharge usefulness.
In Fig. 2 (a), if the solenoid drive signal is conducting, then at first discharge to solenoid 1a by capacitor 12 beginnings, if after discharge time Td, the voltage of capacitor 12 drops to battery tension Vb, then solenoid 1a is driven by battery tension Vb after this, burner oil in turn-on action.
Shown in Fig. 2 (b), after driving solenoid 1a, through the moment of stipulated time Tr, utilize solenoid coil current testing circuit 15 to detect the electric current I s of solenoid, the signal suitable with current value sent in the microcomputer 8.Microcomputer 8 calculates and the corresponding correction value of electrical current, revises the solenoid driving time.
Through behind the scheduled time, stop in order to make the fuel injection, the FET10 that 8 pairs of drivings of microcomputer solenoid is used sends and turn-offs indication, cuts off the electric current of solenoid, and the FET14 that controls the usefulness of discharging simultaneously also turn-offs.So the electrical power storage that stores among the solenoid 1a during cut-out is used at the initial stage that drives solenoid next time in capacitor 12.
In above-mentioned process, battery tension is shown in Fig. 2 (c).Between the solenoid coil current flow periods, only descend a little along with the time.
The action of when unusual (hereinafter referred to as storage battery) when then, about the charged state of storage battery 5 insufficient or storage battery deterioration being described.
In Fig. 2 (c),, compare when storage battery is unusual with just often with shown in the dotted line, the ability drop of storage battery supplying electric current, the voltage of storage battery reduces significantly.Therefore, be conducting in the solenoid drive signal, when being on state (, in solenoid 1a energising), detect through the battery tension Vb1 behind the scheduled time Tr with power sense circuit 16, and in the input microcomputer 8.
As shown in Figure 1, have and will flow under the situation of the temporary transient capacitor 12 that stores of electric current among the solenoid 1a, this scheduled time Tr sets the time longer than Td discharge time of capacitor 12 for.This be because, in the discharge of capacitor 12, because with high voltage solenoid 1a is powered from capacitor 12, therefore can not detect the voltage of storage battery 5 with highi degree of accuracy, but, then can not be subjected to the influence of condenser voltage, and can detect correct battery tension if after discharge.
In addition, in the oscillogram of Fig. 2, the ON time of the solenoid drive signal when why storage battery is unusual prolongs, and is because the supply voltage when unusual is low, makes the solenoid driving time prolong so will control.
Detected battery tension is through Shelving, among the battery condition judging unit 8a in microcomputer 8 (in fact in microcomputer 8, handling) by software, for example, in scheduled time, perhaps in the injecting times of regulation, from the value of several times mensuration, extract minimum magnitude of voltage out, when this voltage is lower than the judgement voltage of regulation, then be judged as unusually, 8 pairs of display lamp drive circuits of microcomputer 17 send the drive signal of prescribed models, make battery condition display lamp 18 light or glimmer.
In addition, battery condition display lamp 18 also can be shared with other warning or display lamp, differentiates just passable on display unit.In addition, display unit is not limited to lamp, for example also can show with display device.
In addition, above-mentioned " the judgement voltage of regulation ", selection be storage battery unusual for the no problem state that travels under and also the abnormal voltage of battery condition.
The following describes and under state, carry out the reason that battery tension detects among the present invention the solenoid energising.
Consider also that in driving fuel jet module 1 not promptly the battery tension when not having load or load very little detects the state of storage battery.For example be a kind of like this method, promptly when utilizing ignition switch to begin, detect battery tension the control unit energising.Yet, though storage battery is added the discharge condition of load and near between the cell voltage (off load voltage) of non-loaded state dependency relation is arranged, but under situation near the 12V series battery of no-load condition, charged state is in 0～100% scope, and the voltage of storage battery only changes about 1V.In addition, sulfation takes place on the pole plate of storage battery and when making storage battery be in deterioration state, because battery tension and charged state have produced other dependency relation, and be very poor according to the precision of the detected charged state of the battery tension near no-load condition time the (off load voltage).
Yet, invention as this example, if under state, carry out the detection of battery tension to the solenoid energising, then particularly under the very low situation of the rotating speed of motor, because the generating capacity of generator reduces, therefore just often the reduction of the voltage when unusual has very big difference, so can detect the state of storage battery with highi degree of accuracy more.Therefore can detect battery condition with highi degree of accuracy, can correctly carry out the unusual judgement of storage battery.
As mentioned above, invention according to this example, because when the drive signal of solenoid is conducting and after passing through scheduled time under the on state, utilize the battery tension detection part to detect battery tension, utilize the battery condition judging unit that this magnitude of voltage is compared with specified value, judge the state of storage battery, and on display unit, show judged result, therefore judge the unusual of storage battery with the battery tension in the solenoid energising, so can detect battery condition with highi degree of accuracy.Therefore can provide a kind of fuel injection system, this fuel injection system can correctly show the unusual etc. of storage battery, before the undesired unfavorable condition that stops with motor of motor takes place, can pass on this abnormal conditions to the user.
Example 2
Fuel injection system according to example 2 is described below.Because whole structure is identical with Fig. 1 of example 1, so omit explanation.In addition, oscillogram is with reference to Fig. 2.
Shown in Fig. 2 (b), when storage battery was unusual, solenoid coil current Is also became than just often low.Therefore, in the fuel injection system of this example, be to detect this solenoid coil current Is, be used for judging the state of storage battery again.
That is to say, when the drive signal of solenoid be conducting, and through scheduled time Tr after, the solenoid coil current testing circuit 15 that is utilized as the solenoid coil current detection part detects the electric current I s of solenoid, utilize battery condition judging unit 8a that this solenoid coil current is compared with specified value, judge the state of storage battery.Microcomputer 8 sends this result to display lamp drive circuit 17, sends instruction, makes it drive battery condition display lamp 18.By like this, battery condition display lamp 18 is lighted or is glimmered, and then can know the state that storage battery is present.
Other fuel injection system according to this example is described then.
Generally, in the storage battery deterioration, inner resistance increases, because the internal resistance increase is bigger than the dependency relation of off load voltage and deterioration with the dependency relation of storage battery deterioration, so, can detect the state of the higher storage battery of precision according to the internal resistance of detected storage battery.
Therefore, when the drive signal of solenoid is conducting, and after under on state, passing through scheduled time Tr, utilize power sense circuit 16 to detect battery tension Vb, utilize solenoid coil current testing circuit 15 to detect the electric current I s of solenoid in the identical moment, again with in these two signal input microcomputers 8, utilize battery condition judging unit 8a, calculate the value that is equivalent to resistive component according to this battery tension Vb and solenoid coil current Is, the value that calculates is compared with the specified standard value, if surpassed reference value, judge that then storage battery is unusual.
In addition, be not necessarily to be limited to make comparisons according to resistive component yet, for example, also can make comparisons, as long as calculate according to battery tension Vb and solenoid coil current Is with the product and the specified value of voltage and electric current.
In the solenoid coil current according to this example detects, as the driving pulse width correction usefulness that originally improves, as long as use the solenoid coil current testing circuit 15 that in control unit 2, possesses for the precision of the fuel injection amount that makes fuel jet module 1.In addition, if the solenoid drive signal be conducting, and through the moment (being the length of scheduled time Tr) of detecting solenoid coil current behind the stipulated time Tr be moment that match, identical in the moment with the current detecting of the pulse width that is used to revise driving, just can alleviate the computation burden of microcomputer 8.
As mentioned above, invention according to this example, because when the drive signal of solenoid is conducting, and after under on state, passing through scheduled time, utilize the solenoid coil current detection part to detect solenoid coil current, utilize the battery condition judging unit, detected solenoid coil current is compared with specified value, judge the state of storage battery, and on display unit, show judged result, therefore judge the unusual of storage battery with the solenoid coil current in the solenoid energising, so can detect the state of storage battery for the storage battery deterioration with higher precision.
In addition, because when the drive signal of solenoid is conducting, and after under on state, passing through scheduled time, utilize the battery tension detection part to detect the voltage of storage battery, utilize the solenoid coil current detection part to detect the electric current of solenoid simultaneously, utilize the battery condition judging unit, to compare according to calculated value and the specified value that battery tension and solenoid coil current are calculated, judge the state of storage battery, and on display unit, show judged result, therefore the state of storage battery can be judged based on the internal resistance of storage battery, the state of storage battery can be detected with higher precision for the storage battery deterioration.Therefore the abnormality judgment method of a kind of fuel injection system and fuel injection system can be provided, and it can correctly show the unusual etc. of storage battery, can pass on this unusual in that motor undesirable condition forward direction user undesired and that motor stops being taken place.
In addition, improve and detect under the situation about constantly matching making as revising the solenoid coil current that the pulse width that drives usefulness detects through the moment of detecting solenoid coil current behind the scheduled time and precision for the fuel injection amount that makes the fuel jet module, can reduce the computation burden of microcomputer, accelerate computational speed, be applicable to more high-revolving motor.
Example 3
Fuel injection system according to example 3 is described below.Because whole structure and oscillogram are identical with Fig. 1 and Fig. 2 of example 1 and example 2, so omit explanation.
In order to judge the state of storage battery, why in the solenoid energising, detect battery tension and/or solenoid coil current, identical with example 1 or example 2.Therefore, below with the invention of example 1 or example 2 part inequality be that the center illustrates.
Place inequality is, detects the moment of battery tension and/or solenoid coil current, promptly in the length of the stipulated time Tr shown in Fig. 2 (b).If stipulated time Tr is the drive signal from solenoid is that conducting begins before disconnect during this period of time.That is to say, be that the moment before disconnecting is detected.As can be seen, before disconnecting, just often the difference when unusual is bigger from the oscillogram of Fig. 2.By like this, detect near the value the minimum moment of battery tension (Vb2) in driving circulation, to improve the precision of judging battery condition.
In addition, when before the energising that disconnects solenoid, detecting like this, by with the corresponding judgment value of establishing of amplitude of electrical pulse, thereby improve the precision that detects more.
As mentioned above, invention according to this example, because through the detection moment of battery tension after the stipulated time and/or solenoid coil current, the drive signal that is set in solenoid is for before disconnecting, therefore just often the difference of the battery tension when unusual becomes big, can access the judgement of the higher battery condition of precision.
Example 4
Fuel injection system according to example 4 is described below.Because whole structure and oscillogram are identical with Fig. 1 and Fig. 2 of example 1 and example 2, so omit explanation.
Shown in the oscillogram of the battery tension among Fig. 2 (c), in this example, when solenoid is sent the instruction of energising, by power sense circuit 16 detect drive signal when solenoid be when disconnecting battery tension Vb0 and through the battery tension Vb1 after the stipulated time, utilize battery condition judging unit 8a, obtain voltage drop part Δ Vb=Vb0-Vb1, compare with specified value again, to judge the state of storage battery.In addition identical in part and the example 1.
In this method, owing to do not rely on other electrical load state such as lamp, and can judge the state of storage battery according to the voltage drop that drives by solenoid, thus can more improve the precision of judgement.
As mentioned above, invention according to this example, owing to utilize the battery tension detection part, battery tension when the drive signal of detection solenoid is disconnection, and the drive signal of solenoid is conducting, and under on state through the battery tension behind the scheduled time, utilize the battery condition judging unit, the difference of detected two battery tensions is compared with specified value, judge the state of storage battery, and on display unit, show judged result, therefore can remove the influence of the variation of the battery tension of solenoid when no electric circuit, and the reduction of judgement battery tension, so the state of the storage battery that can judge rightly out more.
The situation of explanation is to have the solenoid drive circuit in above-mentioned example 1～4, this solenoid drive circuit is after the drive signal of solenoid is disconnection, temporarily be stored into the power that is stored in the solenoid in the capacitor, when if the drive signal of next solenoid is conducting, again to the solenoid discharge circuit, it is longer to set the solenoid drive signal in addition and be the time that the stipulated time after the conducting finishes discharge than capacitor.Though the present invention also goes for not possessing the fuel injection system of the solenoid drive circuit that has as described above, but possessing under the situation that the solenoid drive circuit is arranged, owing to be to set the stipulated time as described above, so in the capacitor discharge, the influence of the voltage change in the time of can not being subjected to the solenoid offset voltage, and the voltage of detection storage battery, the state of the storage battery that can judge rightly out more.
Claims (8)
1. a fuel injection system is characterized in that,
Comprise and have the through and off that utilize to flow into solenoid coil current and make plunger move reciprocatingly, suck that fuel pressurizes and the fuel jet module of the function of spraying again; According to the operational situation of motor and described fuel jet module is given the control unit of drive signal; The generator that utilizes the rotation of described motor and generate electricity; And the storage battery of stores power;
In described control unit, have battery tension detection part and battery condition judging unit, when the drive signal of described solenoid be conducting and under the on state through behind the scheduled time, utilize described battery tension detection part to detect the voltage of storage battery, utilize described battery condition judging unit that described battery tension is compared with specified value, judge the state of storage battery, and on display unit, show the result who judges.
2. a fuel injection system is characterized in that,
Comprise and have the through and off that utilize to flow into solenoid coil current and make plunger move reciprocatingly, suck that fuel pressurizes and the fuel jet module of the function of spraying again; According to the operational situation of motor and described fuel jet module is given the control unit of drive signal; The generator that utilizes the rotation of described motor and generate electricity; And the storage battery of stores power;
In described control unit, have solenoid coil current detection part and battery condition judging unit, when the drive signal of described solenoid be conducting and under the on state through behind the scheduled time, utilize described solenoid coil current detection part to detect the electric current of solenoid, utilize described battery condition judging unit that described solenoid coil current is compared with specified value, judge the state of storage battery, and in display unit, show the result who judges.
3. a fuel injection system is characterized in that,
Comprise and have the through and off that utilize to flow into solenoid coil current and make plunger move reciprocatingly, suck that fuel pressurizes and the fuel jet module of the function of spraying again; According to the operational situation of motor and described fuel jet module is given the control unit of drive signal; The generator that utilizes the rotation of described motor and generate electricity; And the storage battery of stores power;
In described control unit, have battery tension detection part and solenoid coil current detection part, and battery condition judging unit, when the drive signal of described solenoid is conducting, and after under on state, passing through scheduled time, utilize described battery tension detection part to detect the voltage of storage battery, utilize described solenoid coil current detection part to detect the electric current of solenoid simultaneously, utilize described battery condition judging unit, to compare with specified value with the calculated value that the galvanometer of described solenoid calculates according to the voltage of described storage battery, judge the state of storage battery, and in display unit, show the result who judges.
4. the fuel injection system described in claim 2 or 3 is characterized in that,
Through detecting the moment of the electric current of described solenoid after the described stipulated time, and match with the described solenoid coil current detection moment of being detected as the correction of driving pulse width for the precision of the fuel injection amount that improves described fuel jet module.
5. as each described fuel injection system in the claim 1～3, it is characterized in that,
Be before the drive signal of described solenoid is disconnection through the moment of detecting described battery tension or described solenoid coil current after the described stipulated time.
6. a fuel injection system is characterized in that,
Comprise and have the through and off that utilize to flow into solenoid coil current and make plunger move reciprocatingly, suck that fuel pressurizes and the fuel jet module of the function of spraying again; According to the operational situation of motor and described fuel jet module is given the control unit of drive signal; The generator that utilizes the rotation of described motor and generate electricity; And the storage battery of stores power;
In described control unit, have battery tension detection part and battery condition judging unit, utilize described battery tension detection part, the voltage of the storage battery of the drive signal that detects described solenoid when disconnecting, and the drive signal of described solenoid be conducting, and through the voltage of the storage battery behind the scheduled time, the difference of described two voltages that utilize described battery condition judging unit, will obtain is compared with specified value, judge the state of storage battery, and in display unit, show the result who judges.
7. as each described fuel injection system in claim 1～3 and 6, it is characterized in that,
Has the solenoid drive circuit, described solenoid drive circuit is after the drive signal of described solenoid is disconnection, temporarily be stored into the power that is stored in the solenoid in the capacitor, when if the drive signal of next described solenoid is conducting, then to described solenoid discharge
With the drive signal of described solenoid is to set described stipulated time after the conducting that to finish time of discharge than described capacitor long for.
8. the abnormality judgment method of a fuel injection system is characterized in that,
Described fuel injection system comprises and has the through and off that utilize to flow into solenoid coil current and make plunger move reciprocatingly, suck that fuel pressurizes and the fuel jet module of the function of spraying again; According to the operational situation of motor and described fuel jet module is given the control unit of drive signal; The generator that utilizes the rotation of described motor and generate electricity; And the storage battery of stores power, in described control unit, have battery tension detection part and solenoid coil current detection part and battery condition judging unit,
In the abnormality judgment method of described fuel injection system, may further comprise the steps,
When the drive signal of solenoid is conducting and is utilizing described battery tension detection part to detect the step of the voltage of storage battery through behind the scheduled time under the on state; Utilize described solenoid coil current detection part to detect the step of the electric current of solenoid; And utilize described battery condition judging unit, will be according to compare with the specified value step of the state of judging storage battery of the voltage of described storage battery and the calculated value that the galvanometer of described solenoid calculates; And the step that on display unit, shows judged result.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006062697A JP4181183B2 (en) | 2006-03-08 | 2006-03-08 | Fuel injection device and abnormality determination method for fuel injection device |
| JP2006062697 | 2006-03-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101033715A true CN101033715A (en) | 2007-09-12 |
| CN100526628C CN100526628C (en) | 2009-08-12 |
Family
ID=38585371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101398628A Active CN100526628C (en) | 2006-03-08 | 2006-09-21 | Fuel ejection device and abnormity judgement method for the same |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4181183B2 (en) |
| CN (1) | CN100526628C (en) |
| TW (1) | TWI322224B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286060A (en) * | 2015-06-25 | 2017-01-04 | 福特环球技术公司 | system and method for fuel injection |
| CN107782563A (en) * | 2017-10-18 | 2018-03-09 | 重庆市弘鼎圣科技有限公司 | Car fault auto-detecting system |
| CN110821691A (en) * | 2014-05-30 | 2020-02-21 | 日立汽车***株式会社 | Driving device of fuel injection device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4917556B2 (en) * | 2008-01-07 | 2012-04-18 | 日立オートモティブシステムズ株式会社 | Fuel injection control device for internal combustion engine |
| JP2010127173A (en) * | 2008-11-27 | 2010-06-10 | Denso Corp | Valve timing control device and valve timing control system |
| TWI593875B (en) * | 2016-01-21 | 2017-08-01 | Rong-Bin Liao | Engine control |
-
2006
- 2006-03-08 JP JP2006062697A patent/JP4181183B2/en not_active Expired - Fee Related
- 2006-09-21 CN CNB2006101398628A patent/CN100526628C/en active Active
- 2006-11-03 TW TW95140697A patent/TWI322224B/en not_active IP Right Cessation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110821691A (en) * | 2014-05-30 | 2020-02-21 | 日立汽车***株式会社 | Driving device of fuel injection device |
| CN110821691B (en) * | 2014-05-30 | 2022-01-11 | 日立安斯泰莫株式会社 | Driving device of fuel injection device |
| CN106286060A (en) * | 2015-06-25 | 2017-01-04 | 福特环球技术公司 | system and method for fuel injection |
| CN107782563A (en) * | 2017-10-18 | 2018-03-09 | 重庆市弘鼎圣科技有限公司 | Car fault auto-detecting system |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI322224B (en) | 2010-03-21 |
| JP2007239587A (en) | 2007-09-20 |
| TW200734537A (en) | 2007-09-16 |
| CN100526628C (en) | 2009-08-12 |
| JP4181183B2 (en) | 2008-11-12 |
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