CN102345526B - For the method controlling internal combustion engine - Google Patents
For the method controlling internal combustion engine Download PDFInfo
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- CN102345526B CN102345526B CN201110213212.4A CN201110213212A CN102345526B CN 102345526 B CN102345526 B CN 102345526B CN 201110213212 A CN201110213212 A CN 201110213212A CN 102345526 B CN102345526 B CN 102345526B
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- intake manifold
- injection valve
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- injection
- signal
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- 238000000034 method Methods 0.000 title claims abstract description 71
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 24
- 238000002347 injection Methods 0.000 claims abstract description 219
- 239000007924 injection Substances 0.000 claims abstract description 219
- 239000000446 fuel Substances 0.000 claims abstract description 63
- 238000005507 spraying Methods 0.000 claims abstract description 9
- 239000007921 spray Substances 0.000 description 14
- 239000000203 mixture Substances 0.000 description 7
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
Classifications
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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
- F02D41/008—Controlling each cylinder individually
- F02D41/0085—Balancing of cylinder outputs, e.g. speed, torque or air-fuel ratio
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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
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
-
- 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
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2438—Active learning methods
-
- 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
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
- F02D41/2464—Characteristics of actuators
- F02D41/2467—Characteristics of actuators for injectors
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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
- F02D41/30—Controlling fuel injection
- F02D41/3094—Controlling fuel injection the fuel injection being effected by at least two different injectors, e.g. one in the intake manifold and one in the cylinder
Landscapes
- 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)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The present invention relates to the method and apparatus for controlling internal combustion engine, particularly for the method for the emitted dose of at least one the first intake manifold injection valve (150a) of first cylinder (10a) of (A) at the first exhaust of calibration internal combustion engine, first cylinder (10a) has at least one first direct injection valve (110a) and at least one the first intake manifold injection valve, including step: directly injection λ measuring process (1050), during wherein fuel is only directly injected to the first cylinder (10a), and obtain the directly injection λ signal of the first cylinder；Air inlet pipe λ measuring process (1060), wherein fuel is ejected in the first cylinder (10a) with the distribution ratio that the energy between the first intake manifold injection valve (110a) and the first direct injection valve (150a) is predetermined, and obtains the intake manifold injection λ signal of the first cylinder (10a)；λ comparison step (1070), wherein compares the value of the value and intake manifold injection λ signal of directly spraying λ signal.
Description
Technical field
The present invention relates to a kind of method and apparatus for controlling internal combustion engine.
Background technology
Being disclosed some internal combustion engines by DE 10 2,008 002511 A1, in these internal combustion engines, injection valve both can be arranged in air inlet pipe and can also be arranged in combustor.Particularly spraying guiding type combustion method requires that injection valve has higher measuring accuracy, so as to most preferably utilize and had superiority (such as especially for startup, warm-operation or catalyst heating for along with the multiple injection of minimum single injection event).Especially can guarantee required measuring accuracy in the range of minimum by special method.
Disclosed a kind of method by DE 10 2,007 020964 A1, by the method in directly injection realizes the internal combustion engine of the best smoothness of operation, equalize the torque contribution of each cylinder.At this, fuel is ejected in the combustor of cylinder via the injection of the moment of torsion contributing to internal combustion engine, and sprays fuel in rear injection during the impulse stroke of cylinder, wherein zero moment of torsion, spray after so arranging, make aerofluxus substantially consistent with stoichiometric air-fuel mixture.
Can also be arranged in the internal combustion engine in air inlet pipe in injection valve both can be arranged in combustor, in order to improve run stability and reduce discharge, need the fuel quantity being especially such to calibrate intake manifold injection valve, all cylinders are balanced, so that identical fuel quantity is injected in all cylinders.
Summary of the invention
The technical problem to be solved is solved by the method for the emitted dose of at least one the first intake manifold injection valve of a kind of the first cylinder for calibrating at the first exhaust of internal combustion engine.Wherein, first cylinder has at least one first direct injection valve and at least one first intake manifold injection valve, and the method comprises the following steps:-direct injection λ measuring process, in this step, fuel is only directly injected in the first cylinder, and obtains the directly injection λ signal of the first cylinder；-air inlet pipe λ measuring process, in this step, fuel is ejected in the first cylinder with the distribution ratio that the energy between the first intake manifold injection valve and the first direct injection valve is predetermined, and obtains the intake manifold injection λ signal of the first cylinder；-λ comparison step, in this step, compares the value of the value and intake manifold injection λ signal of directly spraying λ signal.
As by disclosed in DE 10 2,007 020964 A1, cylinder balancing function will not be passed on intake manifold injection valve, because zero-emission intake manifold injection cannot be carried out.Therefore the calibration of intake manifold injection valve is the most unworkable.Both can arrange at a kind of injection valve and can also be arranged in a combustion chamber in the internal combustion engine in air inlet pipe, can be such as by the cylinder balancing function calibration direct injection valve as disclosed in DE 10 2,007 020964 A1.By comparing the signal of exhaust gas oxygensensor, for a cylinder, the emitted dose of intake manifold injection valve and direct injection valve can be compared.Therefore intake manifold injection valve can be calibrated with direct injection valve for each cylinder adaptably.Thus especially can balance the emitted dose of intake manifold injection valve.
According to the present invention, obtaining the first signal of exhaust gas oxygensensor in directly injection λ measuring process, fuel is the most directly injected into the first cylinder in this step.In air inlet pipe λ measuring process, fuel only sprays into the first cylinder by intake manifold injection valve or by direct injection valve, wherein, is fixing by the selection of the distribution ratio between the fuel quantity that intake manifold injection valve or direct injection valve are sprayed.The secondary signal of exhaust gas oxygensensor is obtained in this air inlet pipe λ measuring process.In λ comparison step, the first signal and secondary signal to having obtained compare.Thereby determine that, intake manifold injection valve the emitted dose sprayed whether emitted dose with direct injection valve injection has deviation and this deviation to be how many.
If the direct injection valve of the first cylinder being calibrated in directly injection calibration steps, then the important advantage that this way is brought is, can calibrate intake manifold injection valve.
If being calibrated the direct injection valve of the first cylinder by the torque contribution balancing the first cylinder and another cylinder, then advantage is, the calibration of direct injection valve is extremely simple, and achieves the balance of intake manifold injection valve.
If in air inlet pipe λ measuring process, only inject fuel into (all cylinders are all shared at an aerofluxus) in all cylinders in addition to the first cylinder with the first cylinder via the injection valve calibrated, the most particularly advantageously, the deviation of the λ signal obtained in λ comparison step can particularly securely be assigned to the first intake manifold injection valve.
If in air inlet pipe λ measuring process, only via direct injection valve, without intake manifold injection valve, inject fuel into (all cylinders are all shared at an aerofluxus with the first cylinder) in all cylinders in addition to the first cylinder, the most particularly advantageously, it is the most reliable and particularly simple in the present inventive method, because the calibration of direct injection valve and intake manifold injection valve can separately be carried out.
If in step is revised in injection, changing the emitted dose of the first intake manifold injection valve according to the result of λ comparison step, then do so has important advantages in that, the emitted dose of the first intake manifold injection valve is revised.
If when the value of intake manifold injection λ signal is greater than the value of directly injection λ signal, improving the emitted dose of intake manifold injection valve in step is revised in injection, this have the advantage that, be possible to prevent the very few injection of intake manifold injection valve.
If when the value of intake manifold injection λ signal is less than the value of directly injection λ signal, making the emitted dose of intake manifold injection valve diminish in step is revised in injection, this have the advantage that, be possible to prevent intake manifold injection valve too much to spray.
If injection revise step repeat to the value of intake manifold injection λ signal and the value of directly injection λ signal exist deviation and this deviation less than can be predetermined threshold value time, the advantage of do so in particular, in that, the emitted dose sprayed by intake manifold injection valve is at least approximately equal to the emitted dose sprayed by direct injection valve.
If so select can predetermined distribution ratio, make fuel only via the first intake manifold injection valve injection, not via the first direct injection valve injection, then the advantage of do so in particular, in that, described method is particularly reliable.
If implementing at least two in the present inventive method, during the most all of intake manifold injection valve, the advantage of do so particularly in, balance the torque contribution of emitted dose and cylinder, the intake manifold injection valve of these cylinders is calibrated.
Accompanying drawing explanation
The form of implementation of the present invention is elaborated with reference next to accompanying drawing.In the accompanying drawings:
Fig. 1 shows the cylinder of the internal combustion engine by type of the present invention；
Fig. 2 shows the topological diagram of the internal combustion engine of multi cylinder；
Fig. 3 shows flow process in the present inventive method.
Detailed description of the invention
Fig. 1 shows the cylinder 10 of internal combustion engine, and this cylinder band combustor 20, piston 30, piston connecting rod 40 is connected with bent axle 50.
During piston 30 downward movement, via air inlet pipe 80, air to be combusted is sucked combustor 20 in a known way.During piston 30 upstroke, spent air extrudes from combustor 20 via exhaustor 90.The amount of air sucked via air inlet pipe 80 be that the inflation of air throttle 100 changes device and regulates in an embodiment via one, and the position of this air throttle is determined by controller 70.
Fuel via the direct injection valve 110 arranged within the combustion chamber 20 and is ejected in the air pumped out from air inlet pipe 80 via the intake manifold injection valve 150 being arranged in air inlet pipe 80, and forms air-fuel mixture within the combustion chamber 20.The amount of the fuel sprayed by direct injection valve 110 and generally being determined by controller 70 via the persistent period and/or intensity triggering signal by the amount of the fuel of intake manifold injection valve 150 injection.Air-fuel mixture lighted by spark plug 120.
When spraying fuel via direct injection valve 110, can the most especially produce a kind of thin air-fuel mixture.The torque produced by lighting this thin air-fuel mixture is mainly determined by the amount of the fuel sprayed.Therefore, during direct fuel, the amount of the fuel sprayed can be obtained from the moment of torsion produced.
When spraying fuel via intake manifold injection valve 150, generally produce a kind of stoichiometric uniform air-fuel mixture within the combustion chamber 20.In this uniform air-fuel mixture, the moment of torsion produced by igniting is mainly determined by the aeration quantity aspirated.Therefore, when intake manifold injection fuel, the amount of the fuel sprayed cannot generally be inferred from the moment of torsion produced.
Having an exhaust gas oxygensensor 130 in exhaustor 90, it is measured combustion air and than λ and passes it to controller 70.The NOx storage catalytic converters being positioned in the circuit of exhaustor 90 guarantees that in aerofluxus, the content of NOx is remarkably decreased.
Inlet valve 160 on from air inlet pipe 80 to the transport path of combustor 20 is driven by camshaft 190 via cam 180.Equally, the exhaust valve 170 on from exhaustor 90 to the transport path of combustor 20 is driven by camshaft 190 via cam 180.Camshaft 190 couples with bent axle 50.Generally bent axle 50 often rotates two circles, and camshaft 190 just rotates a circle.
Fig. 2 shows the topological diagram of internal combustion engine, is the internal combustion engine having eight cylinders in an embodiment.Figure shows the first cylinder 10a, the second cylinder 10b, the 3rd cylinder 10c, the 4th cylinder 10d, the 5th cylinder 10e, the 6th cylinder 10f, the 7th cylinder 10g and the 8th cylinder 10h.It is respectively each each direct injection valve 110a of arranging, 110b, 110c, 110d, 110e, 110f, 110g, 110h and each intake manifold injection valve 150a, 150b, 150c, 150d, 150e, 150f, 150g, a 150h of eight cylinders 10a, 10b, 10c, 10d, 10e, 10f, 10g, 10h.
All cylinders share air inlet pipe 80 and exhaustor 90, wherein, either air inlet pipe 80 or exhaustor 90 all branches at the importing leading to these cylinders and outgoing line.It is shown without the branch road leading to each cylinder of exhaustor 90 in fig. 2.A at the first exhaust that the unshowned outgoing line of cylinder 10a, 10b, 10c, 10d collectively forms.The outgoing line of unshowned cylinder 10e, 10f, 10g, 10h collectively forms B at second exhaust.At first exhaust, the aerofluxus of A is before it is exported by the exhaustor 90 shared together with the aerofluxus of B at the second exhaust through the second exhaust gas oxygensensor 130b, through the first exhaust gas oxygensensor 130a.
Fig. 3 shows flow process in the present inventive method.Step 1000 indicates the beginning of described method.It is followed by step 1010, checks in this step, if having been carried out the calibration to intake manifold injection valve 150a, 150b, 150c, 150d, 150e, 150f, 150g, 150h.But alternately, it is also possible to consider only to check whether a part of intake manifold injection valve 150a, 150b, 150c, 150d, 150e, 150f, 150g, 150h to be implemented calibration.The latter is the most reasonable when should only calibrate some rather than whole intake manifold injection valves.If having been carried out calibration, subsequently entering step 1020, method terminates in this step.If the most not implementing calibration, then enter step 1030.
Step 1030 is checked, if all of direct injection valve 110a, 110b, 110c, 110d, 110e, 110f, 110g, 110h are calibrated.If being intended merely to several intake manifold injection valves are calibrated, then only check in step 1030, if the direct injection valve that intake manifold injection valve all with to be calibrated is shared at an aerofluxus is calibrated the most.If the first intake manifold injection valve 150a the most only should be calibrated, then check in step 1030, if calibrated the direct injection valve of A at aerofluxus, be the most also direct injection valve 110a, 110b, 110c, 110d.The most then subsequently enter directly injection λ measuring process 1050.If it is not, then enter directly injection calibration steps 1040.As it was previously stated, in other process of described method, especially in step 1060, understand in 1070,1080, it is equipped with the direct injection valve at the aerofluxus of intake manifold injection valve to be calibrated and is calibrated.
Calibrate direct injection valve in step 1040.This calibration especially can be realized by a kind of such as cylinder balancing method disclosed in DE 10 2,007 020 964 A1.In step 1040, all of direct injection valve can be calibrated but it also may consider that only calibrating those is examined the direct injection valve whether being calibrated in step 1030.After step 1040 terminates, fork returns step 1030 again.
In step 1050, fuel is only ejected in all cylinders 10 at aerofluxus, during intake manifold injection valve to be calibrated is positioned at aerofluxus via direct injection valve 110 and without intake manifold injection valve 150.The λ value detected by corresponding exhaust gas oxygensensor 130 is stored in such as controller 70.If the most all of intake manifold injection valve 150a, 150b, 150c, 150d, 150e, 150f, 150g, 150h should be calibrated, then only inject fuel in all of cylinder 10a, 10b, 10c, 10d, 10e, 10f, 10g, 10h via direct injection valve 110a, 110b, 110c, 110d, 110e, 110f, 110g, 110h.Fuel is not had to spray via intake manifold injection valve 150a, 150b, 150c, 150d, 150e, 150f, 150g, 150h.The directly injection λ signal of A at exhaust gas oxygensensor 130a detection aerofluxus.At exhaust gas oxygensensor 130b detection aerofluxus, the second of B directly sprays λ signal.At aerofluxus, the value of value and the second directly injection λ signal that A obtains directly injection λ signal is stored in controller 70.
Otherwise, if the first intake manifold injection valve 150a only should be calibrated, then fuel is only ejected at first exhaust in all cylinders of A via direct injection valve 110a, 110b, 110c, 110d, that is is ejected in cylinder 10a, 10b, 10c, 10d.Fuel is not had to spray via intake manifold injection valve 150a, 150b, 150c, 150d.Exhaust gas oxygensensor 130a detection directly injection λ signal, the value of this signal is stored in controller 70.Fuel can or via direct injection valve 110e, 110f, 110g, 110h, via intake manifold injection valve 150e, 150f, 150g, 150h or via the combined jet of direct injection valve and intake manifold injection valve in cylinder 10e, 10f, 10g, 10h of B at second exhaust.
It is step 1060 after step 1050.The original calibration to intake manifold injection valve is implemented in coherent step 1060, in 1070,1080,1090,1100.First these steps are implemented only for the first intake manifold injection valve to be calibrated.Step 1110 after step 1100 is checked, if calibrate all intake manifold injection valves to be calibrated.If it is not, then fork returns to step 1060, and be the second intake manifold injection valve to be calibrated perform step 1060,1070,1080,1090 and 1100.This can constantly repeat, until determining in step 1110, all intake manifold injection valves to be calibrated are calibrated.Entering into step 1120 in this case, method terminates along with this step.
Step 1060,1070,1080,1090 and 1100 are such as used for explaining such situation, i.e. the first intake manifold injection valve 150a should be calibrated.Intake manifold injection valve 150b, 150c, 150d, 150e, 150f, 150g, 150h for other perform these steps the most in a similar manner.
In air inlet pipe λ measuring process 1060, fuel is ejected in the first cylinder 10a with the distribution ratio limited by direct injection valve 110a and the first intake manifold injection valve 150a.Can the most so select this distribution ratio, i.e. fuel is only sprayed by the first intake manifold injection valve 150a, not have fuel to spray via direct injection valve 110a.Such as it is also possible that select this distribution ratio, i.e. the fuel of 50% sprays via the first intake manifold injection valve 150a, the fuel of 50% then sprays via direct injection valve 110a.It is also contemplated that other arbitrary distribution ratio.Especially implementing during described method, beneficially internal combustion engine operation stationarity, the fuel more than 80% via the injection of direct injection valve 110a and correspondingly fuel less than 20% then via the first intake manifold injection valve 150a injection.Otherwise, a kind of particularly reliable method, the fuel more than 80% sprays via the first intake manifold injection valve 150a, and correspondingly the fuel less than 20% then sprays via direct injection valve 110a.Fuel is only ejected at aerofluxus in other cylinders all of A via calibrated direct injection valve 110b of industry, 110c, 110d.At first exhaust, the exhaust gas oxygensensor 130a of A obtains intake manifold injection λ signal.Then λ comparison step 1070 is carried out.
In process 1070, the value of directly injection λ signal of A at first exhaust is compared with the value of the intake manifold injection λ signal being stored in controller 70, and obtains a difference of the two value.If this difference is more than zero, then the value detected in air inlet pipe λ measuring process 1060 by exhaust gas oxygensensor 130a is less than the value detected in directly injection λ measuring process 1050 by exhaust gas oxygensensor 130a.Thus it can be concluded that spray more fuel than in directly injection λ measuring process 1050 in air inlet pipe λ measuring process 1060.Because in directly injection λ measuring process 1050, fuel is only sprayed by the injection valve after calibration, it can therefore be concluded that go out, jetted too much fuel in air inlet pipe λ measuring process 1060.Because removing the first intake manifold injection valve 150a, only sprayed by the injection valve of calibration in air inlet pipe λ measuring process 1060, it can thus be derived that, the first intake manifold injection valve 150a jetted too much fuel.Otherwise, if this difference is less than zero, then it can be concluded that the first air inlet pipe 150a injection fuel is very few.
Can also derive from the absolute value of this difference in a known manner, it is how many that the first intake manifold injection valve 150a sprays too much or very few mistake amount of fuel injected.
Then carry out injection and revise step 1080.In step 1080, so changing the triggering for the first intake manifold injection valve 150a in controller 70, make the mistake amount of fuel injected obtained in process 1070 is worth to correction.This such as can be carried out by cybernetics regulation algorithm (such as pi regulator).In this case, return to step 1060 from step 1080 fork, no matter and how many times repeat step 1060,1070,1080, until the difference obtained in process 1070 is equal to zero.Here, check in a known manner, the threshold value whether difference obtained in process 1070 can be predetermined less than, wherein, the threshold value that this can be predetermined is especially determined by the measurement result of exhaust gas oxygensensor 130 and the minimum dose precision of intake manifold injection valve 150.
But such as can also be carried out the correction of amount of fuel injected by mistake by characteristic curve, calculate from amount of fuel injected by mistake with these characteristic curves, how to carry out to change the triggering signal of the first intake manifold injection valve 150a.This correction such as can also combine with above-mentioned cybernatic regulation algorithm.
Subsequently enter step 1090.In step 1090-and as necessary by the change triggering signal with the first intake manifold injection valve 150a of the iteration of step 1060 and 1070-obtain, can be stored in controller 70 as the correction value triggering signal of the first intake manifold injection valve 150a.Subsequently enter step 1100.
In step 1100, optionally the correction value of the triggering signal of the first intake manifold injection valve 150a calculated in step 1090 can be can be regarded as the adaptation value of cylinder balance function, especially when the torque contribution that the alignment purpose of the first intake manifold injection valve 150a is at least two in balance cylinder 10a, 10b, 10c, 10d, 10e, 10f, 10g, 10h.Subsequently enter step 1110.
Check in step 1110, if all intake manifold injection valves to be calibrated are calibrated.If it is not, then select next intake manifold injection valve to be calibrated and fork returns to step 1060.If all intake manifold injection valves to be calibrated are calibrated, then terminate described method in step 1120.
In the embodiment shown, direct injection valve 110a, 110b, 110c, 110d, 110e, 110f, 110g, a 110h are just arranged for each cylinder 10a, 10b, 10c, 10d, 10e, 10f, 10g, 10h.Equally, it is also possible to arrange more than one direct injection valve for one or more cylinder 10a, 10b, 10c, 10d, 10e, 10f, 10g, 10h.In this case, in the step 1030 with one or more cylinders of multiple direct injection valve, replace calibration direct injection valve, check total emitted dose of all direct injection valve being associated with associated cylinder to be the most calibrated.But can also check, if each direct injection valve is calibrated one by one.
The most in an illustrated embodiment, intake manifold injection valve 150a, 150b, 150c, 150d, 150e, 150f, 150g, a 150h are just arranged for each cylinder 10a, 10b, 10c, 10d, 10e, 10f, 10g, 10h.But can also have some cylinders is not arrange intake manifold injection valve.Can be that existing intake manifold injection valve is implemented by the calibration steps of the present invention in the way of similar to embodiment.
It is equally that a cylinder arranges multiple intake manifold injection valves.In such a case, it is possible to by the total emitted dose calibrating all intake manifold injection valves being associated with associated cylinder in the present inventive method.If fuel is only via an injection of multiple intake manifold injection valves, then can calibrate intake manifold injection valve one by one.
Additionally it is possible that in step 1060, fuel is also ejected in cylinder 10b, 10c and 10d via one or more intake manifold injection valve 150b, 150c, 150d, as long as relevant intake manifold injection valve is calibrated.
Claims (13)
1. for the method calibrating the emitted dose of at least one the first intake manifold injection valve (150a) of first cylinder (10a) of (A) at the first exhaust of internal combustion engine, wherein, first cylinder (10a) has at least one first direct injection valve (110a) and at least one the first intake manifold injection valve (150a), and the method comprises the following steps:
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Directly injection λ measuring process (1050), in this step, fuel is only directly injected in the first cylinder (10a), and obtains the directly injection λ signal of the first cylinder (10a),
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Air inlet pipe λ measuring process (1060), in this step, fuel is ejected in the first cylinder (10a) with the distribution ratio that the energy between the first intake manifold injection valve (110a) and the first direct injection valve (150a) is predetermined, and obtains the intake manifold injection λ signal of the first cylinder (10a)
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λ comparison step (1070), in this step, compares the value of the value and intake manifold injection λ signal of directly spraying λ signal,
Wherein determining from described contrast, by the emitted dose of the first intake manifold injection valve injection, emitted dose with the first direct injection valve injection has deviation and this deviation to be how many.
2. the method as described in claim 1, it is characterised in that the method comprises the following steps:
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Directly spraying calibration steps (1040), in this step, first direct injection valve (110a) of at least the first cylinder (10a) is calibrated.
3. the method as described in claim 2, it is characterized in that, in directly spraying calibration steps (1040), by the first cylinder (10a) and the calibration of the direct injection valve (110a) of the balanced realization the first cylinder (10a) of the torque contribution of cylinder that at least one is other.
4. the method as described in claim 3, it is characterised in that carry out the equilibrium of the torque contribution of direct injection valve (110) to all cylinders (10) in directly spraying calibration steps (1040).
5. by the method that one of aforementioned claim is described, it is characterized in that, in air inlet pipe λ measuring process (1060), fuel is only ejected in all cylinders (10) in addition to the first cylinder (10a) at first exhaust via the intake manifold injection valve already obtaining calibration.
6. the method as described in claim 5, it is characterised in that in air inlet pipe λ measuring process (1060), fuel is only directly injected in all cylinders (10) in addition to the first cylinder (10a) at first exhaust.
7. the method as described in claim 1, it is characterised in that the method comprises the following steps:
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Step (1080) is revised in injection, in this step, changes the emitted dose of the first intake manifold injection valve (150a) according to the result of λ comparison step (1070).
8. the method as described in claim 7, it is characterised in that in step (1080) is revised in injection, when the value of intake manifold injection λ signal is more than the value of directly injection λ signal, improves the emitted dose of the first intake manifold injection valve (150a).
9. the method as described in claim 7 or 8, it is characterised in that in step (1080) is revised in injection, when the value of intake manifold injection λ signal is less than the value of directly injection λ signal, reduces the emitted dose of the first intake manifold injection valve (150a).
10. the method as described in claim 7 or 8, it is characterised in that as long as repeating injection correction step (1080) so, until the deviation of the value of intake manifold injection λ signal and the directly value of injection λ signal is less than threshold value that can be predetermined.
11. methods as described in claim 1, it is characterised in that so select the distribution ratio that energy is predetermined, so that fuel is only via the first intake manifold injection valve injection.
12. methods as described in claim 1, it is characterised in that implement the method at least two intake manifold injection valve.
13. methods as described in claim 1, it is characterised in that implement the method for whole intake manifold injection valves.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010038625.1A DE102010038625B4 (en) | 2010-07-29 | 2010-07-29 | Method and device for controlling an internal combustion engine |
| DE102010038625.1 | 2010-07-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102345526A CN102345526A (en) | 2012-02-08 |
| CN102345526B true CN102345526B (en) | 2016-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110213212.4A Active CN102345526B (en) | 2010-07-29 | 2011-07-28 | For the method controlling internal combustion engine |
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| JP (1) | JP6049241B2 (en) |
| CN (1) | CN102345526B (en) |
| DE (1) | DE102010038625B4 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012204332B4 (en) * | 2012-03-19 | 2014-11-06 | Continental Automotive Gmbh | Device for operating an internal combustion engine |
| DE102012211754A1 (en) | 2012-07-05 | 2014-01-09 | Robert Bosch Gmbh | Method for operating combustion engine, involves injecting fuel into chamber using injector, where difference between nominal- and actual lambda values enables determining fuel quantity injected by injector during control duration |
| DE102013005678B3 (en) * | 2013-04-03 | 2014-08-28 | Audi Ag | Method of operating internal combustion engine involves determining query to determine whether lambda for suspect cylinder is higher than lambda absolute threshold when cylinder suspected error is determined |
| US9334824B2 (en) | 2014-02-27 | 2016-05-10 | Ford Global Technologies, Llc | Method and system for characterizing a port fuel injector |
| US9404435B2 (en) | 2014-12-01 | 2016-08-02 | Ford Global Technologies, Llc | Methods and systems for adjusting fuel injector operation |
| DE102015213894A1 (en) | 2015-07-23 | 2017-01-26 | Robert Bosch Gmbh | Method for introducing fuel into a combustion chamber of an internal combustion engine with intake manifold injection and direct injection |
| DE102015223319A1 (en) * | 2015-11-25 | 2017-06-01 | Robert Bosch Gmbh | Method for operating an internal combustion engine |
| CN113294252B (en) * | 2021-07-16 | 2022-12-06 | 西华大学 | Variable displacement engine and control method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10163894A1 (en) * | 2001-12-22 | 2003-07-03 | Daimler Chrysler Ag | Internal combustion engine with direct injection |
| CN101365871A (en) * | 2006-02-28 | 2009-02-11 | 丰田自动车株式会社 | Fuel injection control apparatus and control method of internal combustion engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005048730A (en) * | 2003-07-31 | 2005-02-24 | Toyota Motor Corp | Air fuel ratio control device of internal combustion engine |
| DE102006040743B4 (en) * | 2006-08-31 | 2019-05-16 | Robert Bosch Gmbh | Method for operating an internal combustion engine |
| DE102007020964A1 (en) * | 2007-05-04 | 2008-11-06 | Robert Bosch Gmbh | Method for the cylinder equalization of an internal combustion engine |
| DE102008002511B4 (en) | 2008-06-18 | 2018-12-20 | Robert Bosch Gmbh | Method and device for operating an internal combustion engine in combined direct and intake manifold injection, computer program, computer program product |
| JP2009030615A (en) * | 2008-11-10 | 2009-02-12 | Toyota Motor Corp | Method of controlling learning of air-fuel ratio of dual-injection internal combustion engine on vehicle |
| DE102009031583B4 (en) * | 2009-07-03 | 2020-01-30 | Bayerische Motoren Werke Aktiengesellschaft | Method for adapting a device for introducing fuel into a combustion chamber of an internal combustion engine, device for introducing fuel into a combustion chamber of an internal combustion engine and motor vehicle with such a device |
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2010
- 2010-07-29 DE DE102010038625.1A patent/DE102010038625B4/en active Active
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10163894A1 (en) * | 2001-12-22 | 2003-07-03 | Daimler Chrysler Ag | Internal combustion engine with direct injection |
| CN101365871A (en) * | 2006-02-28 | 2009-02-11 | 丰田自动车株式会社 | Fuel injection control apparatus and control method of internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102345526A (en) | 2012-02-08 |
| JP6049241B2 (en) | 2016-12-21 |
| JP2012031859A (en) | 2012-02-16 |
| DE102010038625A1 (en) | 2012-02-02 |
| DE102010038625B4 (en) | 2017-07-06 |
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