CN100591906C - Controller for internal combustion engine and control method - Google Patents
Controller for internal combustion engine and control method Download PDFInfo
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- CN100591906C CN100591906C CN 200680001691 CN200680001691A CN100591906C CN 100591906 C CN100591906 C CN 100591906C CN 200680001691 CN200680001691 CN 200680001691 CN 200680001691 A CN200680001691 A CN 200680001691A CN 100591906 C CN100591906 C CN 100591906C
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- 238000000034 method Methods 0.000 title claims description 18
- 230000001133 acceleration Effects 0.000 claims abstract description 19
- 230000008878 coupling Effects 0.000 claims description 12
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- 238000012937 correction Methods 0.000 claims description 5
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- 238000010304 firing Methods 0.000 description 9
- 239000003502 gasoline Substances 0.000 description 9
- 238000005474 detonation Methods 0.000 description 7
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
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- 239000003915 liquefied petroleum gas Substances 0.000 description 3
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- 238000007600 charging Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 101000911772 Homo sapiens Hsc70-interacting protein Proteins 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
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- 239000007924 injection Substances 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- -1 nickel metal hydride Chemical class 0.000 description 1
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- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
When the variation of the KCS learning value is large, an ISC learning control is performed in a learning acceleration mode in which the amount of the ISC learning update is large and the ISC learningis performed at high speed (steps ST3 to ST5, steps ST9 to ST11). By thus performing the ISC learning control in the learning acceleration mode in which the ISC learning is performed at high speed, the ISC learning control can quickly follow up a great variation of the KCS learning value, and the time required for the ISC control value to converge to the most suitable one can be shortened. With this, the ISC learning control performed during idling of a hybrid car can be completed in a short time, and the fuel consumption enhancement effect by idling stop can be heightened.
Description
Technical field
The present invention relates to be used for the control gear and the controlling method of internal-combustion engine, it is provided with idling speed learning control and pinking learning control so that the pinking in the internal-combustion engine in being installed in hybrid vehicle and other similar automobile minimizes or is prevented from.
Background technique
In recent years; consider environmentalism; need to reduce the effulent of the internal-combustion engine that is installed in the automobile (below be also referred to as motor) and improve the oil consumption rate of internal-combustion engine, as the automobile that satisfies such demand, practical application the hybrid vehicle of mixed power system is installed therein.In hybrid vehicle, adopt idling to stop control to improve oil consumption rate and to reduce effulent.More properly, wait for traffic lights, and also set up predetermined condition simultaneously, then cut off being fed to the fuel of engine chamber with shutting engine down if hybrid vehicle is parked in the crossroad.
On the other hand, in idling speed, control the motor that is installed in hybrid vehicle or the similar automobile by the following method: the bypass of walking around throttle valve is set on the air inlet path of motor, and the IACV (Idle Air Control Valve) (ISCV) that setting is adjusted at the air mass flow in the described bypass makes actual idle speed rotating speed and target idling speed coupling to control ISCV by feedback with angle.In addition, recently, also adopt a kind of method, bypass neither is set in described method ISCV is not set yet, but on the air inlet path of motor, the electronic control throttle valve is set, with the control idling speed, make actual idle speed rotating speed and target idling speed coupling with the described throttle valve of angular adjustment.
In such idling speed control, a kind of learning control is set.More properly, will be corresponding to the air inflow of the angle of the throttle valve (or ISCV) that makes actual idle speed rotating speed and target idling speed coupling as ISC learning value (feedback control value) study, described ISC learning value reflects with the throttle valve angle conversely.Hereinafter such learning control is also referred to as the ISC learning control.In addition, as shown in Figure 5, in the ISC learning control, when the ISC learning value is the initial learn value, with the acceleration mode of learning that ISC pace of learning (or amount and frequency) is increased, carry out the ISC learning control, and in described ISC learning value enters into to a certain degree scope and so when stablizing, close the acceleration mode of learning with the shift learning pattern.
In addition, in the motor in being installed in automobile, spark timing control is set by the knock control system (KCS) that minimizes or prevent pinking.Spark timing control setting by KCS is as follows: always make the judgement whether described motor pinking takes place from the signal of pinking sensor output, and according to described judged result, introduce ignition lag with respect to the timing of reference spark, to use the speed combustion air fuel mixture that reduces, so that maximum combustion pressure that reduce, low to be provided, so that pinking minimizes or is prevented from.If judge described motor pinking not taking place, optimizes the spark timing thereby then introduce progressive ignition advance angle with control.It should be noted that no matter when KCS applies spark timing control to introduce ignition lag, and described ignition lag amount all is used as the study of KCS value.Hereinafter, such learning control is also referred to as the KCS learning control.It should be noted that the ignition lag amount is learnt to provide ignition lag when the motor generation pinking and the amount of progressive ignition advance angle is provided when motor pinking does not take place.
In Japanese patent application publication No. is the document of 4-272439 (file 1), 5-044560 (file 2) and 8-042434 (file 3), the above-mentioned such ISC learning control and the correlation technique of KCS learning control have been described.File 1 has been described the weight that detects according to the fuel characteristic detecting sensor, changes the target idling speed of ISC control.File 2 has been described when fueling significantly changes gasoline volatilization, and air fuel ratio learning value renewal speed increases, to prevent air fuel ratio overrich or rare excessively behind fueling immediately.File 3 has been described characteristic (octane value) and the pinking learning value of judging the fuel that uses from the pinking controlling value of when igniting hypothesis, and sets the reference spark timing that is used for operation when the idle running according to described judgement.
If be provided with for its motor in the hybrid vehicle of ISC learning control and KCS learning control, boosting battery open terminal, replacing battery, replacing electronic control device (ECU) etc., promptly, if interrupt being fed to the electric power of ECU from boosting battery, be also referred to as " battery breaks away from (battery clear) " below, then initialization is stored in the ISC learning value and the KCS learning value of ECU internal storage.
If afterwards in such " battery disengaging ", the running that when dallying, is connected described boosting battery and recovers described motor with on-load, then carry out ISC learning control and KCS learning control without a doubt, and ISC learning value and KCS learning value are upgraded from its default value (or initial value).Yet, there is a kind of situation, after connecting described boosting battery, motor is running when idle running only, and its not on-load running in a period of time.For example, if with the motor outofkilter or stand the simple hybrid vehicle of checking and deliver to the car dealer and locate to check, thereby the terminal that disconnects and reconnect described boosting battery recovers supply electric power, then the car dealer may be only when idle running running engine check.Therefore, after checking, before the actual driving of the user of vehicle, the not on-load ground running of described motor.Under such situation, when carrying out the ISC learning control, do not carry out the KCS learning control, and under such condition, when motor in when running idle running, the high engine speeds running, start unsatisfactorily, owing to the increase of fuel quantity provides bad oil consumption rate.
In addition, in the motor that is provided with ISC learning control and KCS learning control, air inflow also depends on the KCS learning value and changes.Therefore, for example, if regular gasoline is converted to high octane gasoline (vice versa), thereby and the result change the notable change of KCS learning value when fore-octane-number, then between ISC learning value of controlling and actual air inflow, will introduce big difference, and therefore cause bad operating condition.In addition, if the notable change of KCS learning value, then the ISC learning control is also negatively influenced, and this will be described below.
At first, as shown in Figure 5, in quickening mode of learning, and connected boosting battery, the ISC learning control is carried out from original state.Yet, there is a kind of situation, before carrying out the KCS learning control, can stablize the ISC learning value, and can close the acceleration mode of learning.If therefore close described acceleration mode of learning, promptly, ISC study amount is upgraded fewly, and KCS learning value notable change, then the ISC learning control can not be followed immediately, and before obtaining ISC learning value best, that assemble, need a very long time unfriendly (perhaps needing repeatedly to carry out described study unfriendly).Especially, if in order to increase oil consumption rate and to reduce effulent, when having set up the condition of shutting engine down, the motor of hybrid vehicle stops automatically, that is, stop if in vehicle, introducing idling, and because above-mentioned reason, before finishing the idling learning control, have for a long time, then reduced the effect of the raising oil consumption rate that idling stops to have unfriendly.
Summary of the invention
For achieving the above object, the invention provides a kind of control gear that is used for internal-combustion engine, comprising: idling speed learning control device, be used for when described idling of IC engine turns round, the study air inflow is so that actual idle speed rotating speed and target idling speed coupling; With pinking learning control device, be used to judge whether described internal-combustion engine pinking takes place, and the spark timing is learnt as the pinking learning value.Described spark timing when judging described internal-combustion engine generation pinking, be delayed and when judging that described internal-combustion engine pinking does not take place by in advance.Described idling speed learning control device is characterised in that, described idling speed learning control device comprises that setting acceleration mode of learning wherein is to increase by first member of pace of learning, when described first member is used for variable quantity by the pinking learning value of described pinking learning control device study and surpasses predetermined value, with described acceleration mode of learning study air inflow.
According to the present invention, when the KCS learning value has big variation, in the acceleration modes of learning that make a large amount of renewals of ISC study energy quilt and quick execution, carry out ISC learning control (step ST3-ST5 and step ST9-ST11).Therefore, the ISC learning control of carrying out in the acceleration mode of learning that ISC study can be carried out fast can be followed the big variation of KCS learning value immediately, thereby makes the ISC learning value converge to best ISC learning value in the time that reduces.This can prevent that internal-combustion engine from running up, not satisfied startup etc.In addition, this also makes the ISC learning control of carrying out when hybrid vehicle dallies finish at short notice, more effectively improves oil consumption rate so that idling stops.
In the present invention, when the variable quantity of the pinking learning value of being learnt by pinking learning control device surpasses predetermined value, can proofread and correct the learning value of air inflow according to described pinking learning value, and subsequently can be to quicken mode of learning study air inflow.By adopting such setting, can proofread and correct the ISC learning value according to the KCS learning value, so that air inflow is near desired value, and under such condition, can carry out the ISC learning control to quicken mode of learning.Therefore described ISC learning value can converge to best ISC value in the time that further reduces.
In addition,, the invention provides a kind of control gear that is used for internal-combustion engine, comprising for achieving the above object: idling speed learning control device, be used for when described idling of IC engine turns round, the study air inflow is so that actual idle speed rotating speed and target idling speed coupling; With pinking learning control device, be used to judge whether described internal-combustion engine pinking takes place, and the spark timing is learnt as the pinking learning value.Described spark timing when judging described internal-combustion engine generation pinking, be delayed and when judging that described internal-combustion engine pinking does not take place by in advance.Described idling speed learning control device is characterised in that, if when surpassing predetermined value by the variable quantity of the pinking learning value of described pinking learning control device study, then described device is proofreaied and correct the learning value of air inflow according to described pinking learning value.
The present invention also makes the ISC learning control follow the big variation of KCS learning value immediately.More particularly, utilize air inflow to depend on the fact that the KCS learning value changes, and according to the relation between air inflow and the KCS learning value, the ISC learning value of being controlled is proofreaied and correct with the deviation between the air inflow that solves ISC learning value and reality, if thereby described KCS learning value has big variation, then the ISC learning control can be followed immediately, and described ISC learning value can converge to best ISC learning value at short notice.
In addition, in order to achieve the above object, the present invention also provides a kind of controlling method that is used for internal-combustion engine, wherein when described idling of IC engine turns round, the study air inflow is so that actual idle speed rotating speed and target idling speed coupling, judge whether described internal-combustion engine pinking takes place, and the spark timing is learnt as the pinking learning value, described spark timing when judging described internal-combustion engine generation pinking, be delayed and when judging that described internal-combustion engine pinking does not take place by in advance, and when the described air inflow of study, if the variable quantity of described pinking learning value surpasses predetermined value, then learn described air inflow with the acceleration mode of learning that increases pace of learning.
In addition, in order to achieve the above object, the present invention also provides a kind of controlling method that is used for internal-combustion engine, wherein when described idling of IC engine turns round, the study air inflow is so that actual idle speed speed and target idle speed coupling, judge whether described internal-combustion engine pinking takes place, and the spark timing is learnt as the pinking learning value, described spark timing when judging described internal-combustion engine generation pinking, be delayed and when judging that described internal-combustion engine pinking does not take place by in advance, and when the described air inflow of study, if the variable quantity of described pinking learning value surpasses predetermined value, then proofread and correct the learning value of described air inflow according to described pinking learning value.
According to the present invention, if the KCS learning value has big variation, then the ISC learning control can be followed immediately, and therefore makes the ISC learning value can converge to best ISC learning value at short notice.This makes ISC learning control of for example carrying out in the hybrid vehicle of idle running to finish at short notice, so that idling can stop, and more effectively improves oil consumption rate.
Description of drawings
The configuration of an example of the schematically illustrated applied hybrid vehicle of control gear that is used for internal-combustion engine of the present invention of Fig. 1.
Fig. 2 is the configuration of the motor (or internal-combustion engine) in the schematically illustrated hybrid vehicle that is installed in Fig. 1.
The flow chart of an ISC learning control that Fig. 3 provides for ECU and an example of KCS learning control.
The time diagram how Fig. 4 changes for representing ISC learning value and KCS learning value.
Fig. 5 illustrates the shortcoming of conventional I SC learning control and KCS learning control.
Embodiment
Hereinafter embodiments of the invention will be described in conjunction with the accompanying drawings.
The configuration of an example of the schematically illustrated hybrid vehicle that control gear was applied to that is used for internal-combustion engine of the present invention of Fig. 1.
Hybrid vehicle as shown in Figure 1 comprises motor 1, motor 2, generator 3, distributing means for power supply 4, inverter 5, HV battery 6, transducer 7, boosting battery 8, speed changer 9 and ECU100.
Signal rotor 17 is connected on the bent axle 15.Signal rotor 17 has a plurality of projections (or tooth) 17a on circumference.Signal rotor 17 is in abutting connection with crank position sensor 36, and described crank position sensor 36 realizes by for example electromagnetic sensor, and along with bent axle 15 rotations, produce pulse signal (output pulse) corresponding to the projection 17a of signal rotor 17.
In motor 1, firing chamber 1a has spark plug 22 therein.By the adjustment of igniter 23, spark plug 22 is carried out timing ignition.ECU100 control point firearm 23 will described after a while.
In motor 1, firing chamber 1a is connected to air inlet path 11 and exhaust pathway 12.Between air inlet path 11 and firing chamber 1a, be provided with suction valve 13.Drive suction valve 13 opening and closing to make air inlet path 11 and firing chamber 1a connected sum disconnect respectively.Be provided with outlet valve 14 between this external exhaust pathway 12 and the firing chamber 1a.Drive outlet valve 14 opening and closing to make exhaust pathway 12 and firing chamber 1a connected sum disconnect respectively.Each admission cam shaft that rotation by bent axle 15 is transferred to and the rotation of exhaust cam shaft drive suction valve 13 and outlet valve 14 opening and closing.
Air inlet path 11 is provided with air-strainer 26, and hot wire type airometer 33 is integrated with the intake air temperature sensor 34 of described hot wire type airometer 33 and adjusted the electronic control throttle valve 24 of the air inflow of motor 1.Throttle motor 25 drives throttle valve 24.Throttle valve sensor 37 detects the angle of throttle valve 24.In motor 1, exhaust pathway 12 is provided with the O that detects oxygen concentration in the effulent
2Sensor, three-way catalyst (ternary catalyst) 27 etc.
Air inlet path 11 is provided with fuel injector (oil sprayer) 21, and it receives the fuel of predetermined pressure so that described fuel is ejected into the air inlet path 11 by petrolift from fuel pot.The fuel of described injection mixes with air inlet so that air-fuel mixture to be provided, and described mixture enters into the firing chamber 1a of motor 1 successively and also exploded by spark plug 22 ignition combustions.Because described air-fuel mixture is in firing chamber 1a internal combustion and blast, piston 1b to-and-fro motion and bent axle 15 rotate.ECU100 controls the running of above-mentioned motor 1.
The same with motor 2, generator 3 also is an alternating current synchronous motor.In the power that motor 1 produces, the motivational drive generator 3 that distributes by distributing means for power supply 4 produces alternating electromotive force, and described conversely inverter 5 is converted to direct current power with described alternating electromotive force, thereby and to 6 chargings of HV battery.
ECU100 controlling and driving motor 2 and generator 3.ECU100 receives the required signal of control motor 2 and generator 3 (for example, speed, the electric current that applies etc.) driving them from motor 2 and generator 3, and output switch control signal is to inverter 5.
For example distributing means for power supply 4 is to be configured to the planetary pinion that inside engaged gear is connected to the running shaft of motor 2, be connected to the sun gear of the running shaft of generator 3, with the carriage (carrier) of the output shaft that is connected to motor 1, distributing means for power supply 4 is given the running shaft of the motor 2 that is connected to driving wheel 10 and the running shaft of generator 3 with the power distribution of motor 1.
HV battery 6 is high-voltage batteries, and it is configured to for example nickel metal hydride battery Battery pack series connection of predetermined number.Power charge as discussed previously, that it is produced by generator 3.By ECU100 monitoring HV battery 6.
Boosting battery 8 is given the compressor of illumination apparatus, audio equipment, air-conditioning and ECU100 etc. with power supply.By ECU100 monitoring boosting battery 8.It should be noted that ECU100 is unlatching with " battery disengagings " historical flag settings when the blackout supplied with from boosting battery 8.
Transducer 7 is the DC-DC transducers that are connected to a side of the inverter 5 that is connected with direct current, being low voltage (for example 12V) with high-tension direct current downward conversion with to boosting battery 8 chargings.
Speed changer 9 is by differential part 9a distributing means for power supply 4 to be assigned to the device of the power transmission of driving wheel 10 to driving wheel 10.Described speed changer 9 is constructed so that automatic transmission fluid (ATF) circulates therein and is used to lubricate.
ECU100 is equipped with CPU, ROM, RAM, backup RAM etc.Described ROM has the control program that is stored in wherein each type, the setting table of reference etc. in carrying out described various types of control programs.Described CPU carries out various types of programmed sequence of operations based on being stored in various types of control programs in the ROM, setting table etc.Described RAM is the storage of the data that temporarily are stored in operating result that CPU carries out, receive from each sensor etc.Described backup RAM is stored data etc. are wanted in storage when for example motor 1 stops a nonvolatile memory.
ECU100 is connected to cooling-water temperature sensor 31, detonation sensor 32, hot wire type airometer 33, intake air temperature sensor 34, O
2Sensor 35, crank position sensor 36 and throttle valve sensor 37 are connected to starter switch 41 in addition, detect the gear shift sensor 42 of shift level operating position, the accelerator pedal position sensor 43 that detects accelerator pedal position, brake sensor 44, vehicle speed sensor 45 etc.
ECU100 applies mixed power control.More properly, ECU100 is based on the required moment of torsion of the calculated signals driver of above-mentioned various types of sensors output, necessary motor output and motor torque etc., and by driving described driving wheel 10 as one or two of the motor 1 of power source and motor 2.For example in the scope of low engine efficiency, such as stopping when vehicle traction or during with low speed driving, ECU100 applies control with shutting engine down 1, and operating motor 2 drives driving wheel 10 so that power to be provided separately.When normal vehicle operation, ECU100 applies control provides power to drive driving wheel 10 with operation motor 1.In addition, when vehicle quickens with WOT or travels with big load similarly, ECU100 applies control and provides power with operation motor 1, makes HV battery 6 be supplied to motor 2 electric power in addition, so that motor 2 provides the power as the auxiliary power that increases.
In addition, when having set up the condition that stops described motor, ECU100 applies idling and stops control with automatic shutting engine down 1, and execution ISC learning control as described below and KCS learning control:
-ISC learning control-
The ISC learning control is set when motor 1 idle running running.More properly, when the described race of engine turned round, the angle of adjusting throttle valve 24 was to control the air inflow that is incorporated into motor 1 by feeding back, so that actual idle speed rotating speed and target idling speed coupling, and also learn described air inflow (that is the angle of throttle valve 24).
More properly, the signal of the current water temperature of cooling-water temperature sensor 31 output expression motors.According to described temperature, calculate the target idling speed with reference to presetting the setting table.In addition, the actual idle speed rotating speed (promptly, engine speed) reads from the signal of crank position sensor 36 outputs, and control throttle valve 24 to control the air inflow that is incorporated into motor 1, so that actual idle speed rotating speed and target idling speed coupling by feeding back with angle.In addition, will be corresponding to the air inflow of the angle of throttle valve 24 as the study of ISC value, thus and be stored into RAM, backup RAM etc.In addition in this example, be set with and make the acceleration mode of learning to upgrade ISC study (or make can obtain big study amount) in a large number carry out fast that ISC learns and the feasible ISC of study only reduces pace of learning (or amount and frequency) with the normal mode of learning of finite quantity renewal.
-KCS learning control-
The KCS learning control can make the pinking of motor 1 minimize or be prevented from.More properly, always judge from the signal of pinking sensor 32 outputs whether motor pinking takes place, and according to the ignition lag of described judgement introducing about the timing of reference spark.In addition, also learn described ignition lag amount or KCS value.
More properly, the signal of crank position sensor 36 output expression engine speed, and the signal of hot wire type airometer 33 output expression air inflows.According to described output signal, calculate with reference to the spark timing with reference to presetting the setting table.In addition, whether the peak value and the comparison of pinking reference levels of the detonation signal that will receive from detonation sensor 32 to judge motor pinking take place.If judge described motor generation pinking, then introduce ignition lag about the timing of reference spark to reduce the speed of combustion air fuel mixture, that reduce, low maximum combustion pressure is provided, pinking is minimized or be prevented from.In addition, described ignition lag amount also is used as the study of KCS value, and therefore is stored in RAM, backup RAM etc.It should be noted that the ignition lag amount is learnt to provide ignition lag when the engine knock and the amount of progressive ignition advance angle is provided when motor does not have pinking.
As mentioned above, if provide the hybrid vehicle of ISC learning control and KCS learning control to have aforesaid " battery disengaging ", and when idle running and on-load, connect described boosting battery 8 and motor 1 recovery operation subsequently, then carry out ISC learning control and KCS learning control without a doubt, and ISC learning value and KCS learning value are upgraded from its default value (or initial value).
Yet if after boosting battery 8 connects, motor is running when idle running only, and it is in not on-load running of a period of time, and the ISC learning control connects, carries out from original state separately to quicken mode of learning with boosting battery.And before the KCS learning control was carried out, the ISC learning value was stable and close described acceleration mode of learning (referring to Fig. 5).If under such condition, carry out KCS learning control and the notable change of KCS learning value, then the ISC learning control can not be followed immediately, and before obtaining ISC learning value optimum, that assemble, needs a very long time unfriendly (perhaps needing repeatedly to carry out described study unfriendly).In addition, if the stable KCS learning value that when carrying out the KCS learning control, obtains along with the fuel variations of using (, octane value changes) and significantly change, the ISC learning control can not be followed immediately, and is obtaining to need a very long time unfriendly before the ISC learning value optimum, that assemble.
For handling such shortcoming, this example is characterised in that, if the notable change of KCS learning value then is provided at the ISC learning control of quickening in the mode of learning, so that the ISC learning control is followed the variation of KCS learning value.Now will be in conjunction with the concrete example of the such control of the flow chart description of Fig. 3.Control program that it should be noted that Fig. 3 is in each scheduled time, repeat in ECU100.
At step ST1, judge that " battery disengaging " history marks whether to be set to unlatching.If described judged result negates that then control proceeds to step ST9.If the described judgement at step ST1 is sure, then control proceeds to step ST2 to forbid the ISC learning control, up to execution KCS learning control, and provides it to change the KCS learning value that edlkcs is equal to or greater than predetermined reference value.
Then, in motor 1 on-load when running at first, after boosting battery 8 connected, carry out the KCS learning control with study KCS value.If described KCS learning value changes, and its change edlkcs reach be equal to or greater than predetermined reference value value (promptly, if in step ST3, make sure judgement), then control proceeds to step ST4, and when motor 1 idle running running, carry out ISC learning control (step ST5) with the pattern of quickening study.
Hereinafter step ST1-ST5 will be described in more detail.At first, after " battery disengaging ", the running that connects boosting battery 8 and recover motor 1.Only when the idle running luck is transferred on-load, do not turn round if make described motor like this, then as shown in Figure 4, do not carry out the KCS learning control and default value is remained current KCS learning value.Therefore when the KCS learning control is not carried out, in step ST2, forbid the ISC learning control, to prevent to carry out the ISC learning control.
Then, if at first on-load ground running and carry out the KCS learning control of motor 1, then the KCS learning value is from default value generation notable change, and changes edlkcs and reach the value that is equal to or greater than predetermined reference value.If therefore the KCS learning value has the variation edlkcs that is equal to or greater than predetermined reference value, then carry out ISC learning control (step ST4 and step ST5) to quicken mode of learning.This makes the ISC learning control follow the big variation of KCS learning value immediately, and as shown in Figure 4, in the time that apply represented such as the chain type doublet of Fig. 4 lacked when tradition is controlled (frequency of the perhaps favourable described study of execution is low), the ISC learning value converges to best learning value.
When the ISC learning control reached steady I SC learning value in quickening mode of learning, current ISC mode of learning was transformed into normal mode of learning, and in that pattern, carried out ISC learning control (step ST6 and step ST7).It should be noted that in step ST6 the ISC learning value is whether stable to be to judge by the variation whether described ISC learning value has in prespecified range.Thereafter, in step ST8, described " battery disengaging " historical mark is set to close and control and proceeds to step ST9.
By the said process that carry out " battery disengaging " back, carry out the ISC learning control with normal mode of learning, and also order repeats the KCS learning control.This makes ISC learning value and KCS learning value change with stable manner.
If the fuel change of under such condition, using, promptly, regular gasoline is converted to high octane gasoline (vice versa), and then current octane value changes, therefore described KCS learning value notable change and provide and change edlkcs and reach the value that is equal to or greater than predetermined reference value.If described KCS learning value therefore provide reach be equal to or greater than predetermined reference value value (promptly, if in step ST9, make sure judgement), when motor 1 idle running running, carry out ISC learning control (step ST10 and ST11) so to quicken mode of learning.If therefore octane value changes and therefore KCS learning value generation notable change, then can carry out the ISC learning control to follow the notable change of KCS learning value immediately to quicken mode of learning, and as shown in Figure 4, in the time that apply more represented than chain type doublet lacked when tradition is controlled (frequency of the perhaps favourable described study of execution is low), make the ISC learning value converge to best learning value.
Afterwards, when the ISC learning control in quickening mode of learning reached steady I SC learning value, current ISC mode of learning was transformed into normal mode of learning, carried out ISC learning control (step ST12 and ST13) in that pattern.
Therefore, as control in this example, if the KCS learning value provides big variation edlkcs, then can be so that the acceleration mode of learning that ISC study is carried out is fast carried out the ISC learning control.Therefore the ISC learning control can be followed the big variation of KCS learning value immediately, and therefore makes the ISC learning value converge to best learning value in the time that reduces.This makes that carrying out the ISC learning control when hybrid vehicle dallies can finish at short notice, more effectively improves oil consumption rate so that idling stops.
-other embodiment-
In above-mentioned example, when the KCS learning value provides the variation edlkcs that is equal to or greater than predetermined reference value, change current ISC mode of learning to carry out ISC study with the speed that increases.Alternatively, when the KCS learning value provides the variation edlkcs that is equal to or greater than predetermined reference value, can apply such control according to the learning value of described KCS learning value correction air inflow.
More properly, can following explanation such method: utilize air inflow to rely on the KCS learning value and the fact that changes, and according to the relation between air inflow and the KCS learning value, the ISC learning value of deviation between ISC learning value of proofreading and correct, solve control and the actual air inflow, waiting with the previous experience with calculating by experiment is main the acquisition, form with the setting table provides, and is stored among the ROM such as ECU100.If described KCS learning value provides the variation that is equal to or greater than predetermined reference value edlkcs, then be used to proofread and correct the corrected value of described ISC learning value conversely to calculate with reference to above-mentioned corrected value setting table.It should be noted that as mentioned above this example can be represented with the flow chart as Fig. 3,, proofread and correct the ISC learning value with calculated correction value and use corrected value by setting table replacement step ST5-ST7 and ST11-ST13 with reference correction value.
In addition, such trimming process and above-mentioned ISC mode of learning transfer process can be combined, and when the KCS learning value provides the variation edlkcs that is equal to or greater than predetermined reference value, the learning value of air inflow can be proofreaied and correct according to described KCS learning value, and the ISC learning control can be in quickening mode of learning, carried out.Before carrying out the ISC learning control with the acceleration mode of learning, aforesaid such learning control makes can be according to KCS learning value correction ISC learning value, so that air inflow is near the desired value of control.Therefore described ISC learning value can converge to optimum value in the time that further reduces.
Though in above-mentioned example, the example that the separative motor and the hybrid vehicle of the generator that separates are set is applied to the present invention, the present invention is not limited thereto.The present invention is applicable to that also control is installed in the motor that has in the hybrid vehicle that wherein is provided with the motor generator set with motor and generator function.
Though in above-mentioned example, control is installed in the example of the motor in the hybrid vehicle and uses the present invention, the present invention is not limited thereto.The present invention also is applicable to be installed in and is provided with the motor in the economy run vehicle that idling stops to control and is installed in the motor that is not provided with in the common vehicle that idling stops to control.
Though in above-mentioned example, the example of the motor of process ISC learning control is applied to the present invention, the electronic control throttle valve of described ISC learning control by driving with angular adjustment throttling motor (throttle motor), but the present invention is not limited thereto.The present invention also is applicable to the motor that is provided with the bypass of walking around throttle valve and is adjusted at the ISCV of the air mass flow in the described bypass, controls described ISCV by feedback with angle, so that idling speed and target idling speed coupling.
Though in above-mentioned example, the example of controlling 4 cylinder engines is applied to the present invention, the present invention is not limited thereto.The present invention is applicable to that also for example controlling 6 cylinder petrol engines has the multi-cylinder gasoline engine of the cylinder of any number with other.The present invention also is applicable to control V-type multi-cylinder gasoline engine, vertical multi-cylinder gasoline engine of placing etc. in addition.The present invention is not limited to petrol engine in addition, but be applicable to that also control is such as the spark ignition engines of using liquefied petroleum gas (LPG) (LPG), LNG Liquefied natural gas (LNG) and other kind of fuel and the motor (in-cylinder direct injectionengine) of control cylinder inner direct.
Be appreciated that embodiment disclosed herein is that exemplary and in office where face is nonrestrictive.Scope of the present invention limits by claim, rather than described above, and scope of the present invention intention is included in and the scope of described claim equivalence and any modification in the meaning.
Claims (6)
1, a kind of control gear that is used for internal-combustion engine comprises:
Idling speed learning control device is used for when described idling of IC engine turns round, and the study air inflow is so that actual idle speed rotating speed and target idling speed coupling; With
Pinking learning control device, be used to judge whether described internal-combustion engine pinking takes place, and the spark timing is learnt as the pinking learning value, described spark timing when judging described internal-combustion engine generation pinking, be delayed and when judging that described internal-combustion engine pinking does not take place by in advance, wherein said idling speed learning control device comprises wherein being set with and quickens mode of learning to increase by first member of pace of learning, when described first member is used for variable quantity by the pinking learning value of described pinking learning control device study and surpasses predetermined value, with described acceleration mode of learning study air inflow.
2, the control gear that is used for internal-combustion engine as claimed in claim 1, wherein said idling speed learning control device comprises when the variable quantity that is used for by the pinking learning value of described pinking learning control device study surpasses predetermined value, according to the learning value of pinking learning value correction air inflow, learn second member of air inflow then with described acceleration mode of learning.
3, a kind of control gear that is used for internal-combustion engine comprises:
Idling speed learning control device is used for when described idling of IC engine turns round, and the study air inflow is so that actual idle speed rotating speed and target idling speed coupling; With
Pinking learning control device, be used to judge whether described internal-combustion engine pinking takes place, and the spark timing is learnt as the pinking learning value, described spark timing when judging described internal-combustion engine generation pinking, be delayed and when judging that described internal-combustion engine pinking does not take place by in advance, wherein said idling speed learning control device comprises when the variable quantity that is used for by the pinking learning value of described pinking learning control device study surpasses predetermined value, proofreaies and correct the member of the learning value of air inflow according to the pinking learning value.
4, a kind of controlling method that is used for internal-combustion engine, wherein
When described idling of IC engine turns round, learn air inflow so that actual idle speed rotating speed and target idling speed are mated,
Judge whether described internal-combustion engine pinking takes place, and the spark timing learnt as the pinking learning value, described spark timing when judging described internal-combustion engine generation pinking, be delayed and when judging that described internal-combustion engine pinking does not take place by in advance, and
When the described air inflow of study,, then learn described air inflow with the acceleration mode of learning that increases pace of learning if the variable quantity of described pinking learning value surpasses predetermined value.
5, the controlling method that is used for internal-combustion engine as claimed in claim 4, wherein when the described air inflow of study, if the variable quantity of described pinking learning value surpasses predetermined value, then proofread and correct the learning value of described air inflow, then the described air inflow of study in described acceleration mode of learning according to described pinking learning value.
6, a kind of controlling method that is used for internal-combustion engine, wherein
When described idling of IC engine turns round, learn air inflow so that actual idle speed speed and target idle speed mate,
Judge whether described internal-combustion engine pinking takes place, and the spark timing learnt as the pinking learning value, described spark timing when judging described internal-combustion engine generation pinking, be delayed and when judging that described internal-combustion engine pinking does not take place by in advance, and
When the described air inflow of study,, then proofread and correct the learning value of described air inflow according to described pinking learning value if the variable quantity of described pinking learning value surpasses predetermined value.
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| JP2005328897 | 2005-11-14 | ||
| JP328897/2005 | 2005-11-14 | ||
| JP303900/2006 | 2006-11-09 |
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| CN100591906C true CN100591906C (en) | 2010-02-24 |
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| JP2013068160A (en) * | 2011-09-22 | 2013-04-18 | Suzuki Motor Corp | Knocking control device of engine |
| CN104653309B (en) * | 2013-11-20 | 2017-04-12 | 比亚迪股份有限公司 | Calibration method and calibration device for gasoline-hydrogen fueled engine |
| JP6264325B2 (en) * | 2015-06-05 | 2018-01-24 | トヨタ自動車株式会社 | Control device for internal combustion engine |
| US10597024B2 (en) * | 2016-03-10 | 2020-03-24 | Ford Global Technologies, Llc | System and method for powering start-stop and hybrid vehicle components and accessories |
| CN106762183B (en) * | 2017-01-16 | 2019-07-09 | 北京汽车研究总院有限公司 | A kind of engine guard method, device, electronic control unit and automobile |
| JP6939606B2 (en) * | 2018-01-29 | 2021-09-22 | トヨタ自動車株式会社 | Hybrid vehicle |
| JP7035607B2 (en) * | 2018-02-22 | 2022-03-15 | トヨタ自動車株式会社 | Hybrid vehicle control device |
| JP7188360B2 (en) * | 2019-11-07 | 2022-12-13 | トヨタ自動車株式会社 | engine controller |
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