CN1774570A - Control method and device for fuel injection - Google Patents
Control method and device for fuel injection Download PDFInfo
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- CN1774570A CN1774570A CNA2004800034515A CN200480003451A CN1774570A CN 1774570 A CN1774570 A CN 1774570A CN A2004800034515 A CNA2004800034515 A CN A2004800034515A CN 200480003451 A CN200480003451 A CN 200480003451A CN 1774570 A CN1774570 A CN 1774570A
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- fuel
- solenoid
- coil current
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/02—Fuel-injection apparatus characterised by being operated electrically specially for low-pressure fuel-injection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/04—Pumps peculiar thereto
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D2041/2003—Output circuits, e.g. for controlling currents in command coils using means for creating a boost voltage, i.e. generation or use of a voltage higher than the battery voltage, e.g. to speed up injector opening
- F02D2041/2006—Output circuits, e.g. for controlling currents in command coils using means for creating a boost voltage, i.e. generation or use of a voltage higher than the battery voltage, e.g. to speed up injector opening by using a boost capacitor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
- F02D2041/2051—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit using voltage control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
- F02D2041/2055—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit with means for determining actual opening or closing time
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
- F02D2041/2058—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit using information of the actual current value
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
- F02D2041/2065—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit the control being related to the coil temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/12—Introducing corrections for particular operating conditions for deceleration
- F02D41/123—Introducing corrections for particular operating conditions for deceleration the fuel injection being cut-off
- F02D41/126—Introducing corrections for particular operating conditions for deceleration the fuel injection being cut-off transitional corrections at the end of the cut-off period
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2409—Addressing techniques specially adapted therefor
- F02D41/2422—Selective use of one or more tables
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
A method and device for fuel injection, with which an adequate amount of fuel can be injected in accordance with a fuel injection amount required from an engine. A coil current is measured at one or plural time points at which a predetermined time after the start of fuel injection solenoid drive has been reached, and the time to stop the solenoid drive is corrected for adjustment based on the measured coil current value. The correction is made according to a correction value determined based on the measured coil current value and on the required fuel injection amount for the solenoid or according to a correction value selected from predetermined values for various combinations of measured coil current values and required fuel injection amounts, the selection being made in accordance with the combination of the measured coil current value and the required fuel injection amount.
Description
Technical field
The present invention relates to a kind of fuel injection control device and control gear thereof that is used for to the electronic control type of fuelings such as motor, relate in particular to eliminating because of the influence that changes such as solenoidal coil resistance that fuel sprays of being used for of producing such as mains voltage variations, temperature variation, correctly eject the fuel injection control device and the control gear of the required fuel injection amount of motor.
Background technique
For the motor car engine that comprises two-wheel vehicle etc., appropriately and aptly supplying with the fuel that changes constantly, to spray demand be the factor of the utmost importance that influences the internal-combustion engine arrangement performance.Therefore, sucked the temperature and the cell voltage of air according to motor, the fuel injection time when motor is begun is revised in the past always.(spy opens clear 58-28537 communique).
Figure 18 is the concrete example that is used to illustrate the control circuit that detects such fuel injection system supply voltage, in the past.Here, variation can cause the variation of the unit time fuel injection amount of being sprayed by fuel injection system in view of supply voltage (cell voltage), adjusts fuel injection time according to supply voltage value.That is, will be added in the supply voltage V of power end 11 by supply voltage input circlult 12
BBe input to the micro computer 13 of EUC (Electronic Control Unit).And at supply voltage V
BWhen low, micro computer 13 can be adjusted the driving time (fuel injection time) that prolongs solenoid 16 with having prolonged FET14 open-interval driving pulse to 15 outputs of FET drive circuit.Otherwise, supply voltage V
BWhen higher, will shorten FET14 open-interval driving pulse, adjust the driving time that shortens solenoid 16 to 15 outputs of FET drive circuit.Can make fuel injection amount thus under the situation that not influenced by mains voltage variations, the supply of required appropriate amount fuel is controlled.
In addition, fuel is sprayed solenoidal driving current takes current stabilization to handle in the past always.Figure 19 represents the control circuit of the fuel injection system of steady current control types in the past.This circuit is at the supply voltage V that is added in by 21 pairs of voltage detection circuits on the power end 11
BWhen detecting, also by being used to detect the additional resistance 22 and the current detection circuit 23 Test coil electric currents of electric current.Simultaneously, according to supply voltage V
BVariation, by micro computer 13 and constant current control circuit 24 control coil electric currents, it is not changed.
And, detect the fuel temperature of electromagnetic coil temperature correspondence, setting is used for according to this fuel temperature and cell voltage, revise the corrected impulse width of the action delay of fuel injection valve, and effective injection pulse width of the fuel quantity correspondence that will supply with to motor adds above-mentioned corrected impulse width, obtains final injection pulse width (spy opens flat 8-4575 communique).
In addition, though be not used in the fuel injection amount of adjustment towards internal-combustion engine arrangement, but the rotational speed when dallying in order to stablize internal-combustion engine arrangement, to walking around the operating condition that (bypass) is used to detect internal-combustion engine arrangement, the opening area regulating device of bypass path from the throttle (throttle) (tube squeezing valve) of air to internal-combustion engine arrangement that send into transmits control signal, to detect the actual driving current of above-mentioned opening area regulating device, and according to the testing result of this driving current, the idle running control gear (spy opens flat 9-126023 communique) of the internal-combustion engine arrangement of the control signal before the reduction value of the above-mentioned control signal of calculating after above-mentioned opening area regulating device begun to move is sent to and is used to revise calculate in advance above-mentioned and begins to move.
But for example shown in Figure 180, in the controlling method of fuel injection time being revised based on supply voltage value, under the situation that the coil temperature that constitutes solenoid 16 rises, this coil resistance changes, even supply voltage V
BDo not change, have only coil current to change, it also is very difficult supplying with rightly by required fuel injection amount.This is because the cause of change has taken place with the coil current value fuel injection amount of solenoid 16 in the unit time.
Therefore, as shown in figure 19, when considering, comprise that the acting characteristic of action elapsed time etc. of solenoid 16 all produces very cataclysm with the temperature difference with constant current driven solenoid 16, it is complicated that control circuit that causes thus or software are handled, and also will cause the problem of expensiveization thereupon.And the inductance of the with good grounds solenoid of solenoidal driving current self changes the characteristic that slowly increases the zero hour from driving, so so-called solenoid drive current stabilization only means the restriction (setting of lowest high-current value) of driving current.
On the other hand, in the driving-controlling device of the disclosed engine fuel injection valve of Japanese kokai publication hei 8-4575, the electromagnetic coil temperature that varies with temperature fuel injection characteristic and change may not be consistent with fuel temperature, and, in order to detect fuel temperature, be necessary the driving-controlling device of configuration engine fuel injection valve in the fuel bath of limit capacity, and this part will cause the problem that the fuel storage volume reduces in the fuel bath.
And, stable in order to make the spy open the rotational velocity of the disclosed internal-combustion engine arrangement of flat 9-126023 communique when unloaded to setting speed, and the air quantity that adjustment is supplied with to internal-combustion engine arrangement, according to this kind adjustment, can realize catching of unloaded revolution, can prevent to rotate and slow down or the unexpected stall of motor, simultaneously, the adjustment of the fuel feed that moment of being sent by internal-combustion engine arrangement is changed, must add adjuster device of the opening area regulating device of adjusting air quantity and other adjustment fuel duty etc., this just will cause the problem of complicated and expensiveization of device integral body.
And the phase near-earth, inventors of the present invention have developed with the fuel injection system or the fuel injection system of the type in the past that will be sprayed by pressurization of petrolift or regulator and the fuel of sending to different, have used by himself to the fuel pressurization and carry out the fuel injection system (hereinafter referred to as " solenoid fuel injection system ") of the solenoid fuel injection pump that fuel sprays.
This solenoid fuel injection system compares with the fuel injection system of type in the past, has the big advantage that can realize miniaturization and cost degradation, but, only exist and still can not spray the problem of revising the fuel that carries out appropriate demand based on the supply voltage correction driving pulse width size of above-mentioned battery because its fuel injection amount will be subjected to driving fuel to spray the influence characteristic of solenoidal coil current.
The present invention can be used for solving above-mentioned in the past fuel injection control system and all problems that controlling method comprised, its purpose be to provide a kind of can the corresponding demand for fuel emitted dose that changes constantly from motor, based on fuel sprays fuel injection control device and the control gear thereof that solenoidal state is adjusted fuel injection amount.
Summary of the invention
The present invention is based on the fuel injection system of above-mentioned conventional art and the problem of method is developed, a kind of fuel injection control device is provided, it is characterized in that, engrave when the set time of one or more points passes through after fuel injection solenoid begins to drive, the mensuration above-mentioned solenoidal coil current of flowing through, and adjust above-mentioned solenoidal driving opportunity (timing) that stops according to this coil current measured load correction.
So, in the present invention, adjust the solenoidal driving opportunity of stopping based on fuel being sprayed the rise measured load of the coil current that has a significant impact of solenoidal temperature, revising, so can carry out fuel injection control by required appropriate amount.Here, since fuel spray set time that solenoid begins to drive a plurality of points in back through the time coil current that engraves measure, not only can learn the absolute value of the coil current on certain a bit, also can learn the variation of coil current, so, with stop driving and revise opportunity and to compare solenoidal based on independent any coil current measured load, can more correctly spray demand and carry out fuel injection control by fuel.
Fuel injection control device involved in the present invention comprises: the beginning driving fuel is sprayed solenoidal step; Measure above-mentioned solenoid and begin to drive the step of the set time of one or more points of back through the above-mentioned solenoidal coil current of constantly flowing through; According to above-mentioned coil current measured load find the solution be used to revise the correction value that above-mentioned solenoid stops the opportunity that drives step in each interior step.
Herein, above-mentioned correction will be adopted according to above-mentioned coil current measured load and correction value that above-mentioned solenoidal demand for fuel amount is determined.And above-mentioned correction value will be chosen for above-mentioned coil current correction value with to the myriad combinations of the demand for fuel amount of above-mentioned coil current and preestablish, and selector closes and states the correction value of combination.
In addition, the correction that above-mentioned solenoid stops the opportunity that drives comprises: meet above-mentioned coil current measured load and to one of above-mentioned solenoidal demand for fuel amount or all meet and determine, spray the solution procedure of the slope correction value that the ratio of the increasing amount of the increasing amount of demand and above-mentioned solenoidal driving output pulse width represents with fuel; The above-mentioned solenoid that corresponding above-mentioned coil current measured load is determined begins to be driven into the solution procedure of ineffective time after the correction between the fuel injection beginning; With the product value of above-mentioned fuel injection amount and above-mentioned slope correction value and above-mentioned revised addition ineffective time and correction value solution procedure etc. in each interior step.And, use above-mentioned correction value and adjust and above-mentionedly solenoidally stop opportunity.Can realize more accurate fuel injection control thus.
In addition, in the present invention, during engine start or start once more when driving the fuel of accidental interruption sprays for the first time, measure the supply voltage that is added on the above-mentioned solenoid, and according to this magnitude of voltage correction above-mentioned solenoidal driving opportunity of stopping.Thereafter, next time or in the later solenoidal cycle,, obtain to be used to revise and solenoidally stop the correction value on the opportunity that drives and adjust according to this setting-out line loop current.
The present invention also provides a kind of fuel injection control system, and it is characterized in that this device comprises: fuel sprays solenoidal driving arrangement; Measure set time that above-mentioned solenoid begins to drive back 1 point or a plurality of points through the time the solenoidal coil current of flowing through that engraves amperometric determination equipment; According to above-mentioned coil current measured load, obtain and be used to revise the above-mentioned solenoidal correction value that stops the opportunity that drives, and adjust the control apparatus that above-mentioned solenoidal driving stops opportunity with this correction value.
The feeder loop that the energy that is used for when above-mentioned solenoid stops to drive that this solenoid is emitted utilizes as this solenoidal driving energy again also can be set herein.Above-mentioned feeder loop comprises the capacitor that carries out conversion when above-mentioned solenoidal energy of this solenoid being emitted when stopping to drive again.Thus, can reduce the electric power consumption of battery, realize the small capacityization of battery.
The controlling method of fuel injection control involved in the present invention and device thereof, will be according to fuel being sprayed the rise measured load of coil current that considerable influence is arranged of solenoidal temperature, revise and adjust the opportunity that solenoid stops to drive, can carry out the fuel injection control of required appropriate amount thus.Simultaneously, the mensuration of the coil current that engraves when being passed through by the set time to the multiple spot after fuel injection solenoid begins to drive can be learnt the variation of coil current, therefore can realize the more accurate fuel injection control that meets the demand for fuel amount.
Description of drawings
Topology example when Fig. 1 represents that the fuel injection control device that will the present invention relates to and fuel injection control system are applied to the solenoid fuel injection system.
Fig. 2 represents the control organizational composition example of the fuel injection control system that the 1st mode of execution of the present invention relates to.
Fig. 3 represents to use in the solenoid fuel injection system of fuel injection control device of the 1st mode of execution, meets demand driving pulse, coil current that fuel sprays demand and the oscillogram that drives each waveform of output pulse.
Fig. 4 is in the 1st mode of execution of the present invention, and expression drives the block diagram of the method for solving of the pulse width of exporting pulse.
Fig. 5 is the conceptual schematic view of method for solving of the correction value Pr of solenoidal driving output pulse.
Fig. 6 represents the fuel flow rate Q of the fuel injection control apparatus in the 2nd mode of execution of the present invention and the relation between solenoidal driving output pulse width Tout
Fig. 7 represents to describe the figure of the fuel injection amount characteristic in the fuel injection system.
Fig. 8 be in the fuel injection control device of the 2nd mode of execution and the fuel injection control system revised ineffective time characteristic the performance plot of an example.
Fig. 9 is the performance plot of an example of the characteristic of the fuel injection control device of the 2nd mode of execution and the slope correction value in the fuel injection control system.
Figure 10 is the concept map of the method for solving of the revised driving output pulse width Tout in expression the 2nd mode of execution of the present invention.
Figure 11 represents the example of the control organizational composition of this fuel injection control system that contains voltage detection circuit that the 3rd mode of execution of the present invention is related.
Figure 12 represents the example of the correcting process control flow in the 3rd mode of execution of the present invention.
Figure 13 is the pattern signal performance plot of related fuel injection control device of expression the 3rd mode of execution of the present invention and the fuel injection characteristic in the fuel injection control system.
Figure 14 represents the flow chart of the fuel injection control device processing sequence that the 4th mode of execution of the present invention is related.
Figure 15 represents to be used for to detect the sequential chart that the software of the 4th mode of execution coil current is handled.
During the software that Figure 16 represents to be used for to detect the 4th mode of execution coil current was handled, the sequential chart of detection time during deviation appearred.
During the software that Figure 17 represents to be used for to detect the 4th mode of execution coil current was handled, the driving output pulse of detection time during deviation and the oscillogram of each waveform of coil current appearred.
Figure 18 represents the 1st example of the control organizational composition of fuel injection control system in the past.
Figure 19 represents the 2nd example of the control organizational composition of fuel injection control system in the past.
Embodiment
Be described in detail with regard to several embodiments of the present invention hereinafter with reference to accompanying drawing.
(1) the 1st mode of execution of the present invention
Fig. 1 represents to comprise the example of all schematic configuration of the fuel injection system of the fuel injection control system that the present invention relates to.
As shown in Figure 1, the basic structure of solenoid fuel injection system comprises: as the plunger pump (plunger pump) 32 of the pump with cyclic electromagnetic drive of fuel in the force feed fuel bath 31; Have by be pressurized to the inlet opening nozzle 33 of throttle orifice (orifice) portion of the fuel of force feed behind the specified pressure by plunger pump 32; The jet blower 34 that fuel by inlet opening nozzle 33 sprays in (motor) air suction way during greater than specified pressure; Serve as the basis with coil current with the operation information of motor and the solenoid of the plunger pump 32 of flowing through (fuel among the application sprays solenoid) exports the control unit (ECU) 36 of control signal to plunger pump 32 etc.Herein, the control apparatus in the fuel injection control system involved in the present invention is equivalent to above-mentioned control unit 36.
The structure of the fuel injection control system that Fig. 2 is used to illustrate that the 1st mode of execution of the present invention is related.Among Fig. 2, fuel sprays solenoid (following " solenoid " or the title " coil " of should claiming) 46 formation plunger pumps 32.Plunger pump 32 will be driven by the driving arrangement that the switching element, for example N channel fet 44, FET48 and the FET drive circuit 45 that are used for driving fuel injection solenoid 46 constitute.
And in fuel injection system involved in the present invention, have and be used for capacitor 50 and diode 42 that the energy that solenoid 46 is emitted is transformed when stopping to drive solenoid 46.In the power consumption that reduces battery 41, can realize the small capacityization of battery 41 thus.This is owing to will be stored in the result that the energy of solenoid 46 utilizes as the driving energy that drives solenoid 46 again.Simultaneously, for this reason, will charge ratio supply voltage (for example 12V) higher voltage when capacitor 50 charging, so the gathering way of coil current can improve solenoid 46 rapidly and begin to drive the time reaches the effect of the action elapsed time (ineffective time) that shortens plunger pump 32.
As shown in Figure 2, this control gear also has following control apparatus, comprising: be used for fuel spray set time that solenoid 46 begins to drive one or more points of back through the time engrave, measure the current detection circuit 6 of the coil current Ir of the solenoid 46 of flowing through; According to one or more coil current measured loads of measuring, obtain in order to the correction value that stops the opportunity that drives of revising solenoid 46 and drive unit and the micro computer 43 of adjusting the opportunity that stops that reaching later driving of solenoid 46 based on this correction value next time.
By diode 57, with the supply voltage (V of battery 41
B) be added in an end of solenoid 46.An other end of solenoid 46 links to each other with the drain electrode of FET44.As mentioned above, also can the capacitor 50 that itself and the energy of emitting with solenoid charge be connected by diode 42.
By FET drive circuit (driver circuit) 45,, provide to the grid of FET44 to drive the output pulse according to actuating signal by micro computer 43 output.The On/Off action of FET48 can be identical with FET44, also can (FET44 unlatching) open earlier before solenoid 46 drives.And the opportunity of closing of FET48 is before FET44 closes.
The source electrode of FET44 is by current sense resistor 52 ground connection.In case FET44 reaches " unlatching " state according to driving pulse, battery 41 makes solenoid 46 begin to drive at once to solenoid 46 supply line voltages.Measure the electric current of the solenoid 46 of flowing through then according to current detection circuit 6.
In current detection circuit 6, use the amplification circuit that constitutes by series resistors 7, feedback resistance 8, operational amplifier 9, with voltage the drop-out value (" R that produces between current sense resistor 52 (low-resistance value) two ends
52" * " the coil current value ") amplify, and output to the analog input end of micro computer 43.Micro computer 43 carries out digital translation with the analog current value of input again and is stored in the internal storage.In the present invention, based on the driving opportunity of stopping of the coil current measured load correction solenoid 46 in the storage that is recorded in the control apparatus, spray thereby meet the suitable fuel that fuel sprays demand.
And in Fig. 2, the energy of when solenoid 46 stops to drive solenoid 46 being emitted also can be as conventional art to capacitor 50 chargings and utilization again, and use-case buffer circuit (snubber) as shown in figure 18 consumes.Also can adopt the other end of solenoid 46 to connect the structure that 41 pairs of batteries 41 of battery charge by diode 42.
Fig. 3 represent the related fuel of the 1st mode of execution shown in the present spray demand Qc correspondence solenoid 46 demand driving pulse Pw, demand driving pulse Pw pulse width T w, the driving time Tr when solenoid 46 begins to drive when detecting coil current measured load Ir and to reality output is used to drive correlation the driving output pulse Pout of FET44 of solenoid 46., engrave the mensuration coil current during set time process of 1 point will after solenoid 46 begins to drive, setting or a plurality of points herein, in Fig. 3, after the moment that begins to drive of solenoid 46, through Tr
1, Tr
2, Tr
3The measured load of the coil current of the solenoid 46 of flowing through of Trn time is expressed as Ir respectively
1, Ir
2, Ir
3Irn.
In the present invention, for demand driving pulse Pw, the actual driving time of solenoid 46, the coil current Ir (one or more measured loads) that obtains during according to the solenoid-activated of preceding once (or before it) by principle ground, obtain the correction value Pr of demand driving pulse Pw, and, the increase and decrease of the driving time of solenoid 46 is adjusted based on this correction value Pr.
As shown in Figure 3, in this fuel injection control device,, driving pulse Pout is also risen, thereby drive solenoid 46, and make coil current I also begin to flow on the rising edge edge of demand driving pulse Pw.So after beginning to drive from solenoid 46, through constantly, for example 2ms or 4ms and 6ms measure the measured load Ir (Ir of coil current through constantly at the set time of one or more points
1, Ir
2, Ir
3).Read solenoid 46 by storage and stop to drive back coil current measured load Ir (Ir
11 point, or Ir
1, Ir
2, Ir
33 points), and spray demand Qc according to this coil current measured load Ir and fuel, obtain the correction value Pr that sprays demand Qc with respect to fuel.And press fuel according to this correction value Pr and spray demand Qc correction demand pulse width T w, will drive the grid that output pulse Pout is supplied to FET44.Therefore, fuel injection amount suitably is adjusted into and is subjected to driving fuel to spray the fuel injection amount of the influence of solenoidal coil current.
Begin to drive a plurality of coil current value (Ir that engrave when afterwards the set time of a plurality of points passes through according to solenoid 46
1, Ir
2, Ir
3Irn) obtain under the situation of correction value Pr, can obtain correction value Pr by the Ir axle of n unit, or according to the 1st coil current measured load Ir
1Obtain the 1st correction value Pr, sequentially obtain the Pr of correction value Pr again according to ensuing Ir measured load
2, Pr
3Prn, at last with Prn as final correction value.Perhaps also can be at a plurality of coil current value (Ir of a plurality of points
1, Ir
2, Ir
3Irn) obtain the mean value of their correction value Prn separately in, with this mean value as final correction value.
In Fig. 4 and later explanation, according to the set time of a plurality of points after solenoid 46 begins to drive through the time a plurality of coil current values of engraving, when asking correction value Pr, all take same method.
Fig. 4 is a conceptual schematic view of finding the solution the pulse width T out that drives output pulse Pout in the 1st mode of execution of the present invention.As shown in the figure, calculate in the processing division 71 at the corrected impulse width, based on fuel sprays demand Qc and coil current measured load Ir, obtains to meet the correction value Pr that fuel sprays the demand driving pulse Pw of demand Qc correspondence.In arithmetic mean unit 72 (for example adder-subtractor), with this correction value Pr, the fuel that adds deduct sprays the demand driving pulse width Tw of demand Qc correspondence, obtains next time the driving output pulse width Tout of (or next time) thus.Micro computer 43 comprises the corrected impulse width and calculates processing division 71 and adder 72.As mentioned above, begin to drive a plurality of coil current value (Ir that engrave when afterwards the set time of a plurality of points passes through according to solenoid 46
1, Ir
2, Ir
3When Irn) obtaining correction value Pr, can obtain correction value Pr by the Ir axle of n unit, or according to the 1st coil current measured load Ir
1Obtain the 1st correction value Pr, sequentially obtain the Pr of correction value Pr again according to ensuing Ir measured load
2, Pr
3Prn, at last with Prn as final correction value.
In addition, the stack of the noise that coil current produces owing to temperature, coil resistance etc. etc. can change a lot when measuring.When output is carried out the driving output pulse Pout of correcting process according to each correction value of measuring variation, produce and make the fuel injection amount instability, be not suitable for engine-driven situation.
Therefore, in micro computer 43, calculating is also write down the inferior correction value of setting majority and the average correction value of the correction value that approaching majority is inferior.When this correction value of measure calculating surpasses the permitted value of setting of average correction value, will find the solution the correcting process of the pulse width T out of driving output pulse Pout next time, correction value in the permitted value scope with the interior correcting process of then not carrying out.
Fig. 5 is in the correcting process of carrying out of the measured load Ir according to the coil current in the solenoid-activated that the present invention relates to that had before illustrated, the conceptual schematic view of the method for solving of the correction value Pr of solenoid-activated pulse.As shown in the figure, in the storage 8 in constituting micro computer of the present invention, for example on transverse axis the measured load Ir of line taking loop current (according to the set time of a plurality of points through the time n coil engraving current value, when obtaining correction value Pr, the Ir axle of n unit), on the longitudinal axis, get fuel and spray demand Qc, preset the correction value figure of the correction value Pr of the combination that the measured load Ir that describes corresponding various coil currents and fuel sprays demand Qc.Spray the correction value of the combination correspondence of demand Qc with regard to this coil current measured load Ir and fuel, obtain in advance according to modes such as tests.Such correction value figure also can be that as described below, variable is a plurality of factors, exceeds the multivariate table diagrammatic sketch of n unit.
According to the 1st above-mentioned mode of execution, the set time that begins to drive the one or more points in back according to solenoid 46 through the time coil current value Ir that engraves and the demand driving pulse Pw of demand for fuel emitted dose correspondence, to being used for the actual driving output pulse Pout that opens, closes of the FET44 that drives solenoid 46 is revised, in the fuel pressurization, carrying out in the solenoid fuel injection pump of fuel injection, the pass that fuel sprays between demand and actual fuel injection quantities is a linear relationship, can spray demand to fuel and correctly revise.
(2) the 2nd mode of execution of the present invention
Secondly, with the related fuel injection method of the 2nd mode of execution of the present invention, the situation that is applied to the solenoid fuel injection system of structure shown in Figure 1 describes as an example.Owing to repeat with the example of previous the 1st mode of execution, omitted explanation about the solenoid fuel injection system architecture.
Herein, in this 2nd mode of execution, the slope correction value of representing according to the ratio of the increasing amount of increasing amount of spraying demand Qc with fuel and solenoidal driving output pulse width Tout, and solenoid begins to be driven into the revised ineffective time between the injection of beginning fuel, fuel sprays the product value of demand Qc and slope correction value, add revised ineffective time, obtain and drive output pulse width Tout.
Fig. 6 represents fuel injection amount Q in the fuel injection control apparatus in this 2nd mode of execution and the relation between solenoidal driving output pulse width Tout.As shown in Figure 6, when pulse width was raised to certain value (Toffset) by zero, fuel injection amount Q was zero always, after this, follows the increase fuel injection amount Q value of pulse width also can increase according to certain slope Td.
(Toffset) do not begin the time that actual fuel sprays during solenoid 46 began to drive the back setting, owing to do not influence emitted dose, so be called ineffective time.This ineffective time, Toffset naturally was that the change that influenced by the measured load Ir of coil current is worth.Therefore, when hope is carried out more suitable fuel injection for fuel injection amount, also be necessary this Toffset is revised.In Fig. 6, slope Td is the ratio between the increasing amount of the increasing amount of fuel eject request amount Qc and solenoidal driving output pulse width, in this application, is called slope correction value Td.If use this Td and Toffset, driving output pulse width Tout that must control for burner oil correctly sprays demand Qc will represent with formula " Tout=Qc * Td+Toffset ".
But this section Toffet ineffective time is that the size according to aforesaid coil current changes, and therefore can be used as the function representation of coil current measured load Ir.In a word, according to the measured load Ir of coil current, obtain correction ineffective time Toffset value.This revised ineffective time Toffset value, for example for the 1st Tr as coil current
1Coil current measured load Ir behind the effluxion
1, 2 yuan of figure that represent that describe with the value of Toffset and obtaining.This figure will obtain in advance by experiment.
In addition, when fuel sprays demand Qc and drives pass between output pulse width Tout and be linearity, slope correction value Td be with ineffective time Toffset can become coil current measured load Ir (Ir for example equally
1) function.Therefore, the value of this slope correction value Td, for example, the figure that available Ir describes 2 yuan of tables of Td value obtains.But when the pass between fuel injection demand Qc and driving output pulse width Tout was non-linear, slope correction value Td was the measured load Ir of coil current and the function that fuel sprays demand Qc.Therefore, under this situation, measured load Ir and fuel injection demand Qc for coil current use 3 yuan the figure that describes slope correction value Td, obtain slope correction value Td.This figure will obtain in advance by experiment.
Fig. 7 is the example that is illustrated in the actual fuel injection quantities Qout among the measured load Ir of multiple coil current and is used for the chart of the relation between driving pulse width Tout that final fuel sprays.Emitted dose property list shown in the 7th figure, it is big more to be illustrated in coil current measured load Ir, and for identical driving output pulse width produce the more fact of the fuel injection of volume in the time of few more ineffective time.
Fig. 8 represent ineffective time Toffset and coil current measured load Ir between an example concerning.Fig. 9 represents slope correction value Td and coil current measured load Ir (Ir for example
1) between the relation an example.When fuel injection demand Qc and driving output pulse width Tout were linear, the value that the relation of slope correction value Td and coil current measured load Ir and fuel spray demand Qc had nothing to do, and only is relation shown in Figure 9.
But when fuel injection demand Qc is non-linear relation with driving output pulse width Tout, spray demand Qc, be respectively relation as shown in Figure 9 for various fuel.
Figure 10 is the 2nd concept map of the method for solving of the revised driving output pulse width Tout in this 2nd mode of execution of expression.Herein, as shown in the figure, at first in multiplier 75, carry out spraying corresponding demand driving pulse Pw of demand Qc and the multiplication of slope correction value Td with fuel.This slope correction value Td is obtained by chart (map) 81 according to coil current measured load Ir.
Slope correction value Td also can begin to drive a plurality of coil current value (Ir that engrave when afterwards the set time of a plurality of points passes through according to solenoid 46 hereto
1, Ir
2, Ir
3Irn) obtain.At this moment, obtain slope correction value Td according to the Ir axle of n unit, or according to the 1st coil current measured load Ir
1Obtain, trying to achieve slope correction value Td successively according to Ir measured load thereafter is Td
2, Td
3Tdn, and with Tdn as final correction value.
Then, in adder 76, the value of Qc * Td is added Toffset ineffective time.Toffset will adopt corrected ineffective time of the Toffset that is obtained by chart 82 according to coil current measured load Ir this ineffective time.
So, can be used for the driving output pulse width Tout that fuel sprays in the hope of final.Herein multiplier 75 and adder 76 all are included in the micro computer 43.Again, chart 81, chart 82 all have been stored in the data store in the micro computer 43.
According to above-mentioned the 2nd mode of execution of the present invention, according to one or more coil current measured loads Ir, or according to this coil current measured load Ir and fuel injection demand Qc, obtain slope correction value Td, and obtain revised ineffective time of Toffset according to coil current measured load Ir, use these revised ineffective time of Toffset and slope correction value Td again, revise being used for the driving output pulse width Tout that final fuel sprays.
Thus, carry out when fuel is pressurizeed in the solenoid fuel injection pump of fuel injection, when the demand fuel impulse Pw of fuel injection demand correspondence and fuel injection amount Q are non-linear relation, also can carry out appropriate correction fuel injection amount Q.In addition, at driving pulse width and fuel injection amount is in the fuel injection system of linear relationship, slope correction value Td and revised ineffective time Toffset can obtain by 2 yuan of figure respectively, so can realize comparing with the situation of using 3 yuan of figure corrections, find the solution the figure that correction value is calculated owing to used to have simplified, reduced the advantage of storage usage quantity.
(3) the 3rd mode of execution of the present invention
Figure 11 is the control organizational composition figure that is used to illustrate the fuel injection control system that this 3rd mode of execution is related.This control organizational composition in the solenoid fuel injection system shown in the 2nd figure, has been added detection supply voltage V as shown in figure 11
BAnd supply with the voltage detection circuit 49 of these checkout values and constitute to micro computer 43.And other structure is identical with structure shown in Figure 2.
Figure 12 represents the example of the correcting process control flow that this 3rd mode of execution relates to.When motor begins to start, when being the 1st driving of fuel injection solenoid 46, owing to there is not a previous fuel injection period, thus not for obtain slope correction value Td and revised ineffective time the previous fuel injection period that Toffset can reference beginning fuel one or more aspects after spraying on the data of coil current measured load Ir.And because under the situation of unloaded failure of fuel of stopping transport, fuel is had no progeny in spraying, situation about driving once more with solenoid 46 was identical when the automobile that assembles this motor when descending failure of fuel or wait for traffic lamp took place.In addition, under situations such as battery capacity is less, start when driving motor supply voltage V
BCan be greatly descend, micro computer is resetted and with reference to the Ir data of a preceding fuel jet type.
Therefore, in this 3rd mode of execution, formed have no progeny in only when motor begins to drive or by the fuel that failure of fuel causes, spraying drive solenoid 46 once more the time drive for the 1st time the time, detect supply voltage V by voltage detection circuit 49
B, according to this checkout value obtain slope correction value Td and revised ineffective time Toffset structure.
In addition, though do not illustrate particularly, be used to describe for supply voltage V
BRevised ineffective time Toffset figure, be used to describe with respect to supply voltage V
BThe figure of slope correction value Td is obtained in advance by experiment, and is stored in the memory section of micro computer.
Application is according to supply voltage V
BThe slope correction value Td that obtains of checkout value and revised ineffective time Toffset, obtaining the process that drives output pulse width Tout by representation " Tout=Qc * Td+Toffset " will be identical with the 2nd mode of execution that the front illustrated.
According to the 3rd above-mentioned mode of execution, the fuel that causes when motor begins to drive and by failure of fuel is had no progeny in spraying when driving solenoid 46 once more when driving for the 1st time, according to supply voltage V
BDetection, and the coil current measured load Ir that the time will in addition be detected in the time of will spraying according to preceding primary fuel, revise the driving output pulse width Tout that is used for the final fuel injection respectively, therefore can correctly revise fuel injection amount Q in the solenoid fuel injection system to the injection of fuel pressurization carrying out simultaneously fuel in the same manner with the 3rd mode of execution.
In addition, when driving pulse output width Tout is linear relationship with fuel injection amount Q, owing to the figure that is used for corrected Calculation is 2 yuan, so have the advantage of the storage use amount of the advantage that can realize simplifying corrected Calculation and minimizing figure.
(4) the 4th mode of execution of the present invention
In the present invention, the fuel injection control device that the 4th mode of execution is related, be in order to prevent in above-mentioned the 1st to the 3rd mode of execution, after measuring solenoid 46 and beginning to drive during through the coil current behind the set time, because the coil current measured load Ir that the deviation of minute causes departs from the method for initial value.
For example, the solenoid fuel injection system of Fig. 2 or structure shown in Figure 11, as shown in figure 15, utilization is used to make the driving pulse 92 that drives output pulse 91 unlatchings, starts the timer of measuring coil current Tr detection time, enters excitation wait state 93, the driving pulse 94 that finishes with the counting of this timer again, inrush current detects the A/D converter of usefulness, enters excitation wait state 95, and the driving pulse 96 that finishes with the A/D conversion carries out the software processing that the A/D conversion value reads in.Herein, timer and current detecting all are built in the micro computer 43 with A/D converter.
In above-mentioned software is handled, as shown in figure 16, when producing the driving pulse 94 of timer counting, handle 97 if carry out other driving pulse, after it is finished, inrush current detected and use A/D converter, therefore can make the sampling time of coil current only be offset Ts, and detect solenoid 46 begin to drive after through the coil current in moment of Tr+Ts time.
Therefore, the coil current measured load Ir that as shown in figure 17, the checkout value 98 of coil current will be by initial value, promptly drive after the beginning through moment of Tr is displaced to Is.When being used to open driving pulse 92 generations of driving output pulse 91, owing to carry out other driving pulse, therefore after driving output pulse 91 entered opening state, it also was the same making the situation of timer startup at once.So in the 4th mode of execution, will carry out the mensuration of coil current by the order of following explanation.
The 14th figure is the flow chart of an example of the processing sequence in the related fuel injection control device of expression the present invention the 4th mode of execution.At first, begin solenoidal driving and begin the driving pulse processing, record is driven the T1 (output delivery value) (step S131) constantly that replaces that exports the pulse unlatching, start the timer (step S132) that is used for current detecting.
Then, carry out other processing (step S133), a counting that sends timer is finished driving pulse, just begins the current detecting Timing Processing.Once you begin this is handled, the moment T that just measures current time, is about to carry out the A/D conversion
2(step S134), and calculate and obtain T
1The time be carved into T
2The moment elapsed time T of institute
2-T
1(step S135).
Herein, with above-mentioned transit time T
2-T
1With pre-set time ratio (step S136).Transit time T
2-T
1Set time with interior situation under, detect with A/D converter with regard to inrush current and to begin A/D conversion (step S137), stop being used for the Timing Processing of current detecting.
If produced the driving pulse that the A/D conversion finishes afterwards, then read in the A/D transforming numerical in the A/D conversion treatment, the measured load Ir (step S138) according to this value renewal coil current stops whole processing.At this moment, the coil current measured load Ir according to after this renewal as illustrated in the 1st and the 3rd mode of execution, carries out the correction of solenoid-activated output pulse width.
On the other hand, according to the comparative result of step 136, if transit time T
2-T
1Surpassed set time, then inrush current does not detect and uses A/D converter, directly stops whole processing.At this moment, according to the coil current measured load Ir that did not upgrade, promptly former setting-out line loop current measured load Ir (for example, being stored in the RAM of micro computer 43) carries out the correction of solenoid-activated output pulse width.Situation about controlling with n coil current measured load Ir on a plurality of points behind the based on fuel injection beginning is identical.
According to above-mentioned the 4th mode of execution, determined in order to go up the mensuration opportunity (timing) that prevents the significantly skew that coil current measured load Ir produces in the excitation arteries and veins by other, can suppress to revise the variation of the A/F that causes according to coil current measured load Ir by the initial value skew.
The present invention is not restricted to the respective embodiments described above, also can carry out multiple variation.For example, in the 1st mode of execution, the arithmetic mean unit that makes pulse width correction value Pr and fuel spray the corresponding demand driving pulse Pw application of demand Qc is not limited to adder, also can be subtractor, multiplier, divider, or their combination, and the arithmetic mean unit that carries out other computing.
And the present invention also is not limited to the solenoid fuel injection system that illustrated in above-mentioned various true mode, also can be applied to, it is the characteristic of class linear relationship that solenoidal driving output pulse width and fuel injection amount are arranged, and has the fuel injection system of fuel supply with pressure regulator.Because in this fuel injection system, the acting characteristic that drives solenoidal action elapsed time (ineffective time) etc. can change with factors such as coil current value or temperature.
Industrial applicibility
The present invention relates to a kind ofly for carry out electronic controlled fuel injection control method and the control device thereof that fuel is supplied with to engine etc., have industrial applicibility.
Claims (12)
1, a kind of fuel injection control device, it is characterized in that, the set time of the one or more points after being determined at fuel and spraying solenoid and begin to drive through the time the above-mentioned solenoidal coil current of flowing through that engraves, and, above-mentioned solenoidal driving is stopped opportunity revising adjustment according to above-mentioned coil current measured load.
2, a kind of fuel injection control device is characterized in that this method comprises:
Beginning fuel sprays the step of solenoidal driving;
The set time of one or more points after being determined at above-mentioned solenoid and beginning to drive through the time the above-mentioned solenoidal coil current of flowing through that engraves step;
And according to above-mentioned coil current measured load, obtain and be used to revise each steps such as step that above-mentioned solenoid-activated stops the correction value on opportunity,
And use above-mentioned correction value and adjust above-mentioned solenoidal driving and stop opportunity.
3, fuel injection control device as claimed in claim 1 or 2 is characterized in that, above-mentioned correction has been adopted by above-mentioned coil current measured load with to above-mentioned solenoidal fuel and sprayed the common correction value that determines of demand.
4, as claim 1 or 2 fuel injection control devices of putting down in writing, it is characterized in that above-mentioned correction has been adopted for by above-mentioned coil current measured load and correction value that the various combinations that above-mentioned solenoidal fuel sprays demand are preestablished and select according to combinations thereof.
5, fuel injection control device as claimed in claim 1 or 2 is characterized in that, the correction that above-mentioned solenoid-activated stops opportunity comprising:
Meet above-mentioned coil current measured load and above-mentioned solenoidal fuel is sprayed in the demand one or all meet the solution procedure of setting, spraying the slope correction value that the ratio of the increasing amount of the increasing amount of demand and above-mentioned solenoid-activated output pulse width represents with fuel;
The above-mentioned solenoid that meets above-mentioned amperometric determination value and set begins to drive the back to the fuel injection beginning solution procedure of preceding revised ineffective time;
And the product value that above-mentioned fuel sprays demand and above-mentioned slope correction value added each steps such as solution procedure of the correction value of gained ineffective time, and use above-mentioned correction value and adjust and above-mentionedly solenoidally stop opportunity.
6, fuel injection control device as claimed in claim 1 or 2, it is characterized in that, in the setting of the above-mentioned solenoidal driving time when motor begins to start or when driving the first time when the fuel that starts accidental interruption once more sprays, mensuration is added in above-mentioned solenoidal supply voltage, according to this supply voltage measured load, revise above-mentioned solenoidal driving and stop opportunity.
7, a kind of fuel injection control system is characterized in that this device comprises:
Fuel sprays solenoidal driving arrangement;
The set time of the one or more points after being determined at fuel and spraying solenoid and begin to drive through the time the above-mentioned solenoidal coil current of flowing through that engraves amperometric determination equipment;
And, obtain and be used for the correction value that above-mentioned solenoid-activated stops opportunity, and use the control apparatus that this correction value stops opportunity and adjusts above-mentioned solenoid-activated according to above-mentioned coil current measured load.
8, fuel injection control system as claimed in claim 7 is characterized in that this device has, when above-mentioned solenoid stops to drive, and the feeder loop that the energy that this solenoid is emitted utilizes as this solenoidal driving energy again.
9, fuel injection control system as claimed in claim 7 is characterized in that, above-mentioned feeder loop comprises, the capacitor that the energy of emitting with above-mentioned solenoid when above-mentioned solenoid-activated stops to charge.
As any described fuel injection control system in the claim 7 to 9, it is characterized in that 10, above-mentioned correction value is by above-mentioned coil current measured load with to the common decision of above-mentioned solenoidal demand for fuel amount.
11, as any described fuel injection control system in the claim 7 to 9, it is characterized in that above-mentioned correction value is to preestablish and select according to combinations thereof for the multiple combination that above-mentioned coil current measured load and above-mentioned solenoidal fuel spray demand.
12, as any described fuel injection control system in the claim 7 to 9, it is characterized in that above-mentioned control gear possesses:
Store the memory device of above-mentioned solenoid current measured load;
Meet the coil current measured load that is stored in above-mentioned memory device and above-mentioned solenoidal fuel is sprayed in the demand one or all meet and set, the slope correction value that the ratio between the increasing amount of the increasing amount of demand and above-mentioned solenoid-activated output pulse width of spraying with fuel is represented is found the solution equipment;
Meet the above-mentioned coil current measured load that is stored in above-mentioned memory device and set begin to drive the back equipment of finding the solution of the revised ineffective time before the fuel injection beginning from above-mentioned solenoid;
And the product value that above-mentioned fuel sprays demand and above-mentioned slope correction value added each equipment such as the equipment of finding the solution of the above-mentioned correction value that obtain above-mentioned revised ineffective time, and adjust with above-mentioned correction value and above-mentionedly solenoidally to stop opportunity.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003026167 | 2003-02-03 | ||
| JP026167/2003 | 2003-02-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1774570A true CN1774570A (en) | 2006-05-17 |
| CN100420842C CN100420842C (en) | 2008-09-24 |
Family
ID=32844133
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800034515A Expired - Fee Related CN100420842C (en) | 2003-02-03 | 2004-01-30 | Control method and device for fuel injection |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1596055A4 (en) |
| JP (1) | JPWO2004070182A1 (en) |
| KR (1) | KR20050097519A (en) |
| CN (1) | CN100420842C (en) |
| TW (1) | TW200422515A (en) |
| WO (1) | WO2004070182A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269069A (en) * | 2010-06-01 | 2011-12-07 | 通用汽车环球科技运作有限责任公司 | Control system and method for low quantity fuel injection |
| CN105736164A (en) * | 2014-12-24 | 2016-07-06 | 现代自动车株式会社 | Method and apparatus for controlling injector drive |
| CN109155878A (en) * | 2016-05-31 | 2019-01-04 | 法国大陆汽车公司 | For detecting the method for interrupting the failure of the software solution of moment for estimating internal combustion engine fuel injection |
| CN109328262A (en) * | 2016-05-06 | 2019-02-12 | 丰田自动车株式会社 | Fuel injection control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5058239B2 (en) * | 2009-10-30 | 2012-10-24 | 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 |
| KR20120063117A (en) * | 2010-12-07 | 2012-06-15 | 현대자동차주식회사 | Solenoid valve control method for high pressure fuel pump of gdi engine and high pressure fluid pump |
| DE102010063097B4 (en) * | 2010-12-15 | 2018-10-11 | Robert Bosch Gmbh | Method for operating an internal combustion engine |
| JP5851354B2 (en) * | 2012-06-21 | 2016-02-03 | 日立オートモティブシステムズ株式会社 | Control device for internal combustion engine |
| DE102013201702C5 (en) | 2013-02-01 | 2017-03-23 | Mtu Friedrichshafen Gmbh | Method and arrangement for controlling an internal combustion engine |
| DE102014206353A1 (en) | 2014-04-03 | 2015-10-08 | Continental Automotive Gmbh | Method and device for monitoring the temperature of the coil wire of a solenoid valve |
| JP6751654B2 (en) * | 2016-11-14 | 2020-09-09 | 日立オートモティブシステムズ株式会社 | Fuel injection device control device |
| DE102017116379A1 (en) * | 2017-07-20 | 2019-01-24 | Liebherr-Components Deggendorf Gmbh | Device for condition detection of an injector |
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| JPH07111151B2 (en) * | 1984-01-10 | 1995-11-29 | 日本電装株式会社 | Fuel injection amount control device for diesel engine |
| US4974622A (en) * | 1990-01-23 | 1990-12-04 | Borg-Warner Automotive, Inc. | Self compensation for duty cycle control |
| DE4308811B9 (en) * | 1992-07-21 | 2004-08-19 | Robert Bosch Gmbh | Method and device for controlling a solenoid-controlled fuel metering device |
| JP3222012B2 (en) * | 1994-06-28 | 2001-10-22 | 株式会社日本自動車部品総合研究所 | Solenoid valve drive circuit |
| DE19513878A1 (en) * | 1995-04-12 | 1996-10-17 | Bosch Gmbh Robert | Method and device for controlling an electromagnetic consumer |
| JP2000110593A (en) * | 1998-10-05 | 2000-04-18 | Nissan Motor Co Ltd | Driving circuit of electromagnetic driving intake and exhaust valve |
| JP2000337224A (en) * | 1999-05-27 | 2000-12-05 | Hitachi Ltd | Engine control device |
| JP3932474B2 (en) * | 1999-07-28 | 2007-06-20 | 株式会社日立製作所 | Electromagnetic fuel injection device and internal combustion engine |
| JP3719641B2 (en) * | 1999-12-28 | 2005-11-24 | 三菱電機株式会社 | Fuel pressure control device for in-cylinder injection engine |
| JP4119116B2 (en) * | 2001-08-02 | 2008-07-16 | 株式会社ミクニ | Fuel injection method |
| US20210012649A1 (en) * | 2018-03-29 | 2021-01-14 | Nec Corporation | Information processing apparatus, road analysis method, and non-transitory computer readable medium storing program |
-
2004
- 2004-01-30 CN CNB2004800034515A patent/CN100420842C/en not_active Expired - Fee Related
- 2004-01-30 JP JP2005504800A patent/JPWO2004070182A1/en active Pending
- 2004-01-30 KR KR1020057013793A patent/KR20050097519A/en not_active Application Discontinuation
- 2004-01-30 WO PCT/JP2004/000889 patent/WO2004070182A1/en active Application Filing
- 2004-01-30 EP EP04706791A patent/EP1596055A4/en not_active Withdrawn
- 2004-02-02 TW TW093102326A patent/TW200422515A/en unknown
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269069A (en) * | 2010-06-01 | 2011-12-07 | 通用汽车环球科技运作有限责任公司 | Control system and method for low quantity fuel injection |
| CN102269069B (en) * | 2010-06-01 | 2015-07-29 | 通用汽车环球科技运作有限责任公司 | The control system of spraying for low amounts fuel and method |
| CN105736164A (en) * | 2014-12-24 | 2016-07-06 | 现代自动车株式会社 | Method and apparatus for controlling injector drive |
| CN109328262A (en) * | 2016-05-06 | 2019-02-12 | 丰田自动车株式会社 | Fuel injection control system |
| CN109155878A (en) * | 2016-05-31 | 2019-01-04 | 法国大陆汽车公司 | For detecting the method for interrupting the failure of the software solution of moment for estimating internal combustion engine fuel injection |
| CN109155878B (en) * | 2016-05-31 | 2021-08-03 | 法国大陆汽车公司 | Method for detecting a fault of a software solution for estimating the fuel injection interruption instant of an internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1596055A4 (en) | 2008-12-31 |
| KR20050097519A (en) | 2005-10-07 |
| WO2004070182A1 (en) | 2004-08-19 |
| TW200422515A (en) | 2004-11-01 |
| JPWO2004070182A1 (en) | 2006-05-25 |
| EP1596055A1 (en) | 2005-11-16 |
| CN100420842C (en) | 2008-09-24 |
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