CN101029605A - Method and device for running gas engine with multi-cylinder - Google Patents
Method and device for running gas engine with multi-cylinder Download PDFInfo
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- CN101029605A CN101029605A CNA2007100847041A CN200710084704A CN101029605A CN 101029605 A CN101029605 A CN 101029605A CN A2007100847041 A CNA2007100847041 A CN A2007100847041A CN 200710084704 A CN200710084704 A CN 200710084704A CN 101029605 A CN101029605 A CN 101029605A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000002485 combustion reaction Methods 0.000 claims abstract description 32
- 238000009423 ventilation Methods 0.000 claims description 34
- 239000000446 fuel Substances 0.000 claims description 14
- 238000007689 inspection Methods 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims 4
- 238000001514 detection method Methods 0.000 claims 1
- 239000003054 catalyst Substances 0.000 abstract description 9
- 239000000523 sample Substances 0.000 description 40
- 239000007789 gas Substances 0.000 description 14
- 238000010304 firing Methods 0.000 description 11
- 239000000203 mixture Substances 0.000 description 8
- 238000005259 measurement Methods 0.000 description 7
- 239000002912 waste gas Substances 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 230000002950 deficient Effects 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
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
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/06—Cutting-out cylinders
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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
- F02D41/22—Safety or indicating devices for abnormal conditions
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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
- F02D17/00—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling
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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
- F02D41/0087—Selective cylinder activation, i.e. partial cylinder operation
-
- 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
- F02D41/1497—With detection of the mechanical response of the engine
- F02D41/1498—With detection of the mechanical response of the engine measuring engine roughness
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D45/00—Electrical control not provided for in groups F02D41/00 - F02D43/00
-
- 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
- F02D41/0002—Controlling intake air
- F02D2041/001—Controlling intake air for engines with variable valve actuation
- F02D2041/0012—Controlling intake air for engines with variable valve actuation with selective deactivation of cylinders
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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
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/1015—Engines misfires
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
A method and a device for operating a combustion engine (1) with one or more cylinders (5, 6, 7, 8, 9, 10, 11, 12) are provided, which can shut off the cylinders in case of burning interruption, without causing temperature rise in the gas exhaust pipeline or subsequent damage to the catalyst. Burning interruption check is carried out for at least a cylinder (5). If the check result indicates unwanted burning interruption occurs in the cylinder (5), the air change for the cylinder (5) will be interrupted.
Description
Technical field
The present invention relates to be used to move a kind of a kind of method and a kind of device with internal-combustion engine of one or more cylinders according to the described type of independent claims preamble.
Background technique
Known by DE 10 2,004 019 780 A1, fuel is by in the firing chamber of direct this internal-combustion engine of spirt in internal-combustion engine.Under the situation that identifies the burning cutoff, send an interrupt instruction, be used for interrupting spraying into fuel to corresponding firing chamber.This by means of speed probe detect cylinder exclusive burning cutoff.
Interrupts fuel input under the situation that identifies the burning cutoff, with this prevent unburned air-/fuel-mixture is transported to the gas exhaust piping from the cylinder of burning cutoff.If unburned air-/fuel-mixture is transported in the gas exhaust piping, and this just raises because of the reaction of fuel and oxygen causes occurring unallowed temperature in catalyst converter subsequently so.If but interrupted the fuel injection of associated cylinder, then only fresh air would be transported to the gas exhaust piping from this cylinder.
Problem in this case is, described by the cylinder that is interrupted the fuel input be transported in the gas exhaust piping oxygen can be deposited in the catalyst converter or from the hydrocarbon generation exothermic reaction of wall film.The temperature that causes thus raises may damage catalyst converter.Under the situation of burning cutoff, can trigger the warning light on the combination instrument of automobile, be used for showing and must eliminate fault in garage.If but the driver still makes out of order automobile running a period of time no matter warning light has lighted in other words in flicker, catalyst converter can wear out in advance because of fresh air is input in the gas exhaust piping continuously so, produces follow-up expense thus.
In addition, fresh air is input to continuously causes difficulty can in the gas exhaust piping existing air coefficient adjusting, especially all the more so when using the two point form lambda sensor.This can produce such result, promptly under a kind of such situation air-/fuel-proportions of ingredients also has only by controller and regulates.Again can not realize the precision that air coefficient is regulated thus.And give off more harmful matter thus.
Summary of the invention
Opposite with above-mentioned situation, have the described feature of independent claims be used for operation of combustion engine have such advantage by method of the present invention with by device of the present invention, be the cutoff inspection of burning of at least one cylinder, and for finding that through checking described at least one cylinder has this situation of the burning cutoff of not expecting and interrupts the ventilation of described at least one cylinder.In this way, concerning in described at least one cylinder, detecting burning cutoff this situation, prevented described at least one cylinder also with fresh air in other words oxygen be input in the gas exhaust piping.Neither can cause not desired temperatures rising of catalyst converter in the gas exhaust piping thus, also can not have influence on existing air coefficient and regulate and have influence on thus emission of harmful substances.Prevent that equally catalyst converter is because of wearing out fresh air conveying in advance in gas exhaust piping.
By listed in the dependent claims measure, can be implemented in the favourable further expansion and the improvement of method illustrated in the independent claims.
Especially advantageously, if detect described at least one very first time predesignated of at least one cylinder combustion cutoff or first crank angle that at least one is predesignated, then interrupt the ventilation of described at least one cylinder.In this way, can be especially simply identify the cylinder of the burning cutoff that appearance do not expect according to the endurance of the burning cutoff that is occurred, such burning cutoff meeting causes this cylinder ventilation to be interrupted.
The method that produces another advantage is: if detect at least one first burning cutoff number of times of predesignating of described at least one cylinder in second time of predesignating or in second crank angle of predesignating, that just interrupts the ventilation of described at least one cylinder.In this way, can be especially simply the cylinder of the burning cutoff do not expected occurs according to the frequency identification of this cylinder combustion cutoff, such burning cutoff meeting causes the ventilation of this cylinder to be interrupted.
The method that produces another advantage is: described at least one cylinder comprises at least one suction valve and at least one outlet valve, and interrupts the ventilation of described at least one cylinder because of described at least one suction valve and/or described at least one outlet valve deexcitation.In this way, can be especially simply by stoping fresh air to enter described at least one cylinder or stoping gas to enter the ventilation of interrupting described at least one cylinder the gas exhaust piping from described at least one cylinder.
This point especially can realize by following method simply, promptly along with the deexcitation of described at least one outlet valve in other words of described at least one suction valve, especially continues to close described in other words at least one outlet valve of described at least one suction valve.
Description of drawings
A kind of embodiment of the present invention is shown in the drawings, in the following description it is done to explain in detail.Wherein:
Fig. 1 is the first party block diagram of an internal-combustion engine,
Fig. 2 is the second party block diagram from the intercepting portion-form of described first party block diagram of this internal-combustion engine,
Fig. 3 be one by the device that is used for operation of combustion engine of the present invention,
Fig. 4 is one and is used for flow chart that the exemplary flow by method of the present invention is described.
Embodiment
In Fig. 1,1 expression is such as the internal-combustion engine that can drive automobile.This internal-combustion engine 1 is such as being petrol engine or diesel engine.Suppose as an example that below this internal-combustion engine 1 is a petrol engine.It comprises one first air cylinder base 2 and one second air cylinder base 3 in the illustrated embodiment.Usually, this internal-combustion engine 1 comprises just what a or any a plurality of air cylinder base.This internal-combustion engine 1 comprises 8 cylinders 5,6,7,8,9,10,11,12 in the embodiment in figure 1.On principle, this internal-combustion engine 1 can comprise the cylinder of arbitrary number, but comprises at least one cylinder.According to the embodiment of Fig. 1, described first air cylinder base 2 comprises one first cylinder 5, one second cylinder 6, the 3rd cylinder 7 and a four-cylinder 8.Described second air cylinder base 3 comprises one the 5th cylinder 9, one the 6th cylinder 10, the 7th cylinder 11 and one the 8th cylinder 12.Carry fresh air by first air passageways 60 to the cylinder 5,6,7,8 of described first air cylinder base 2 with a first throttle valve 70.Carry fresh air by second air passageways 65 to the cylinder 9,10,11,12 of described second air cylinder base 3 with one second throttle valve 75.Described first air passageways 60 and second air passageways 65 are supplied with by a common air delivery passage 55.Fresh air is represented with arrow in Fig. 1 in described common air delivery passage 55 and the flow direction in described two air passagewayss 60,65.The position of described throttle valve 70,75 is controlled in known manner by an engine controller 80, such as controlling according to the operational degree of a unshowned accelerator pedal in Fig. 1 and/or according to different automobile components such as anti-lock braking system, the torque request that drives anti-skidding control gear, driving dynamics controlling device, travelling speed controlling device or the like.In addition, described engine controller 80 with the known mode of those of ordinary skill control single cylinder 5,6 ..., 12 fuel sprays, such as the air that is used to reach desired-/fuel-proportions of ingredients.Wherein, fuel directly the single cylinder 5,6 of spirt ..., in 12, perhaps can be in the upstream or the described air passageways 60,65 of downstream spirt of described throttle valve 70,75.In addition, this engine controller 80 also with the known mode of those of ordinary skill be controlled at described single cylinder 5,6 ..., the air in 12-/igniting of fuel-mixture, such as being used to regulate a kind of desired moment deposit of described internal-combustion engine 1 or a kind of specific efficient of this internal-combustion engine 1.Air-/formed waste gas was discharged in one first exhaust passage 85 when fuel-mixture burnt in described cylinder 5,6,7,8.Air-/formed waste gas was discharged in one second exhaust passage 90 when fuel-mixture burnt in described cylinder 9,10,11,12.Described first exhaust passage 85 and described second exhaust passage 90 merge into a common gas exhaust piping 95, also can select to arrange a catalyst converter 100 in this gas exhaust piping 95.Waste gas in described exhaust passage 85,90 and the flow direction in described common gas exhaust piping 95 in Fig. 1, represent with arrow.In described first exhaust passage 85, arranged one first lambda sensor 110, it is measured the oxygen content in the waste gas of described first exhaust passage 85, and such as for described first air cylinder base 2 being carried out the known air coefficient adjusting of those of ordinary skill this measurement result being flowed to described engine controller 80.In described second exhaust passage 90, arranged one second lambda sensor 115, it is measured the oxygen content in the waste gas of described second exhaust passage 90, and this measurement result is flowed to described engine controller 80, such as regulating for described second air cylinder base 3 being carried out the known air coefficient of those of ordinary skill.Described first lambda sensor 110 can be such as being two point form lambda sensor or lasting lambda sensor.Described second lambda sensor 115 can be such as being lambda sensor or the two point form lambda sensor that continues.In addition, be provided with a speed probe 105, it offers described engine controller 80 with signal, and described signal is corresponding to the rotating speed of a unshowned bent axle of described internal-combustion engine 1.
In described internal-combustion engine 1, owing to different reasons be in operation can described cylinder 5,6 ..., the burning cutoff appears in one of them cylinder in 12.Such burning cutoff is such as detecting by means of the rotation nonuniformity of described speed probe 105 by the bent axle of consequent described internal-combustion engine 1.A kind of method relevant for this illustrates that such as obtaining the content of this document also becomes the theme of disclosure document clearly in DE 1 99 56 936 A1.By means of described speed probe 105 described single cylinder 5,6 ..., in its firing chamber, survey the burning cutoff in 12 in other words.A kind of such cylinder exclusive burning cutoff identification such as in DE10 2,004 019 780 A1, obtaining explanation, its content also becomes the theme of disclosure document clearly.
Figure 2 illustrates an intercepting part of skeleton diagram shown in Figure 1.Wherein, Fig. 2 illustrates described first cylinder 5 as Fig. 1 as an example and with the details of amplifying, and carries fresh air by described first air passageways 60 and described first throttle valve 70 to this first cylinder 5.Wherein, among Fig. 2 identical reference character represent with Fig. 1 in components identical.Fresh air flows to described first cylinder 5 in described first throttle valve 70 downstreams by a suction valve 15.This suction valve 15 is such as opening and closing by a camshaft in the known mode of a kind of those of ordinary skill.Scheme as an alternative, and as indicated among Fig. 2, this suction valve 15 can open and close triggering by described engine controller 80 in the known mode of a kind of those of ordinary skill, such as by means of a kind of electrolyte type valve positioner (EHVS) or by means of a kind of electromagnetic valve regulator.Below, hypothesis uses a kind of described EHVS to open and close described suction valve 15 as an example.Can be by a injection valve 120 to the firing chamber transfer the fuel of described first cylinder 5 by described engine controller 80 triggerings.Then by air in the firing chamber of described first cylinder 5 of 125 pairs on a spark plug that correspondingly triggers by described engine controller 80-/fuel-mixture lights a fire.Air in the firing chamber of described first cylinder 5-/formed waste gas is discharged in described first exhaust passage 85 by an outlet valve 20 during fuel-mixture burns.Wherein, described outlet valve 20 is such as also opening and closing by means of a camshaft.Scheme as an alternative, this outlet valve 20 opens and closes triggering by the triggering of being undertaken by described engine controller 80 in the known mode of a kind of those of ordinary skill by means of electrolyte type valve positioner (EHVS) or by means of a kind of electromagnetic valve regulator equally.
In the embodiment of Fig. 2, described first cylinder 5 comprises just what a suction valve 15 and just what a outlet valve 20.But scheme as an alternative, fresh air also can flow to the firing chamber of described first cylinder 5 by a plurality of suction valves.And the air in the firing chamber of described first cylinder 5-/formed waste gas also can be discharged in described first exhaust passage 85 by a plurality of outlet valves during fuel-mixture burns.
What a what a below imagine as the just suction valve 15 and just outlet valve 20 of being provided with shown in Figure 2 as an example.
Also can or all be provided with illustrated and the configuration of described shown in figure 2 first cylinder 5 as an example for one or more in remaining cylinder 6,7,8,9,10,11,12.
Now by the present invention, for described cylinder 5,6 ..., the cutoff inspection of burning of at least one cylinder in 12, as such as illustration in DE 10 2,004 019 780 A1 and DE 199 56 936 A1.For finding this situation of burning cutoff, interrupt the ventilation of this cylinder at the inspection of at least one cylinder.Below as an example described first cylinder 5 is considered as accepting the cylinder that illustrated burning cutoff is checked.Wherein, scheme or scheme as a supplement as an alternative, can certainly for remaining cylinder 6,7 ..., one or more in 12 or all carry out illustrated burning cutoff inspection by illustrated mode.Wherein, concerning the cylinder of each process inspection discovery burning cutoff, interrupt its ventilation.At this advantageously, be not simultaneously to all cylinders 5,6 ..., 12 interrupt its ventilation, being used to realize the emergency operating of internal-combustion engine, and prevent that internal-combustion engine is flame-out.The ventilation of a cylinder be included between the firing chamber of the air passageways that set and this cylinder ventilation and the firing chamber and described the setting of this cylinder to the ventilation between the exhaust passage of this cylinder.In example, can interrupt the ventilation of described first cylinder 5 by the suction valve 15 or the outlet valve 20 this methods that continue to close described first cylinder 5 according to described first cylinder 5 shown in Figure 2.In this way, in the process that ventilation is interrupted, prevent that fresh air from entering into described first exhaust passage 85 from described first air passageways 60, and prevent that the catalyst converter that is arranged in its back from raising impaired because of starting described temperature.This point is even more important, if because the burning cutoff of described first cylinder 5 that is detected is not only as its ventilation of illustrated interruption, but also as such as the illustrated fuel supply of also interrupting extraly to described first cylinder 5 in DE 10 2,004 019 780 A1, thereby no longer include the firing chamber that fuel enters into described first cylinder 5.In this case, the interruption by ventilation prevents that the fresh air that will not need to be used to burn from flowing to described first exhaust passage 85 by described first cylinder 5.
In Fig. 3, show a device 25 with the form of functional diagram, this device 25 is such as can be accomplished in engine controller 80 at software and/or hardware aspect, and carries tach signal by described speed probe 105 to it.This device 25 comprises one first probe unit 130, and the signal of described speed probe 105 just flows to this first probe unit 130.Wherein, as illustrated in DE 10 2,004 019 780 A1 and DE 199 56 936 A1, described first probe unit 130 is according to the cylinder individual cases, just such as the situation that exists of surveying the burning cutoff for described first cylinder 5.If detect the burning cutoff by described first probe unit 130 for described first cylinder 5, so described first probe unit 130 is sending to one first comparing unit 150 with an asserts signal (Setzsignal) on its output terminal in the burning cutoff endurance of being detected.In addition, by one first memory cell 170 first crank angle of predesignating is flowed to described first comparing unit 150.Described first comparing unit 150 is according to being checked the endurance of being detected with the burning cutoff of crank angle goniometer by endurance of the received asserts signal of described first probe unit 130, and itself and described first crank angle of predesignating are compared.If the endurance of described burning cutoff with the crank angle goniometer is greater than or equal to described first crank angle of predesignating, so described first comparing unit 150 just produces an asserts signal on its delivery end, otherwise just produces a reset signal.Wherein, the output terminal of described first comparing unit 150 is fed to the deexcitation unit 40 of an ODER-element form.For detecting endurance, can in the known mode of those of ordinary skill the corresponding current crank angle of described internal-combustion engine 1 be flowed to described first comparing unit 150 by a unshowned in the accompanying drawings CKP with the burning cutoff of crank angle goniometer.Can carry out time diffusion by corner signal at this and form the described tach signal that flows to first probe unit 130, thereby can abandon described speed probe 105 described CKP.Scheme as an alternative, described first comparing unit 150 also can be surveyed endurance of set output signal of described first probe unit 130 as the burning cutoff endurance.In this case, carry a very first time of predesignating by described first memory cell 170 to described first comparing unit 150.If the endurance of the burning cutoff that is detected meets or exceeds the described very first time of predesignating, that just is provided with the output terminal of described first comparing unit 150.Wherein, the described very first time of predesignating can be such as obtaining the characteristic curve that depends on the present engine rotating speed from.For this purpose, the tach signal of described speed probe 105 can be flowed to described first memory cell 170.Wherein, along with the rising of engine speed, such as selecting the described very first time of predesignating less according to a kind of straight line is related.The described in other words characteristic curve that is used to calculate the very first time of predesignating of described first crank angle of predesignating can be such as being applied in a test stand rightly.Wherein, application aims is, so select the described described in other words very first time of predesignating of first crank angle of predesignating, make of short duration accidental should can not causing on the output terminal of described first comparing unit 150, form a set pulse owing to the burning cutoff of combustion defect, guarantee but then, should under any circumstance all cause asserts signal of generation on the output terminal of described first comparing unit 150 owing to the burning cutoff of aflame defective thereby so long crank angle in other words of the sort of endurance is so big.
As the additional project or the replacement scheme of described first probe unit 130, be provided with one second probe unit 135, the tach signal of described speed probe 105 flows to this second probe unit 135.Described second probe unit 135 detects the appearance situation of the burning cutoff of described first cylinder 5 in illustrated mode, and comprise a counter in addition equally, and this counter the primary combustion cutoff occurs and just increases by 1 from numerical value 0 beginning is every.Wherein, one second memory cell 175 is connected with described second probe unit 135, this second memory cell 175 with second time of predesignating in other words second crankshaft angle interval of predesignating flow to described second probe unit 135.Wherein, the counter of described second probe unit 135 is counted the burning cutoff that occurs in described second crankshaft angle interval of predesignating in other words in described second time of predesignating.Under the situation of described second time of predesignating, this time also can flow to this second memory cell 175 as input parameter with engine speed according to engine speed such as reading from a characteristic curve of described second memory cell 175.Along with engine speed rises, get described second time selection of predesignating less.Under the situation of described second crankshaft angle interval of predesignating, by unshowned CKP corresponding current crank angle is flowed to described second probe unit 135, so that can find, when described second crankshaft angle interval of predesignating passs.Described be used to calculate described in other words second crankshaft angle interval of predesignating of characteristic curve of described second time of predesignating also can be such as being applied in a test stand so rightly, thereby on the one hand can keep the endurance that is used to detect the number of burning cutoff short as far as possible, this longer duration can detect enough burning cutoff to carry out flawless fault diagnosis when being enough to be used in defective burning occurring in described first cylinder 5 on the other hand.The number of detected burning cutoff sends one second comparing unit 155 to by described second probe unit 135 in the second crankshaft angle interval process of predesignating in other words in described second time of predesignating, and the number of the burning cutoff that 155 of this second comparing units will detect and first number of predesignating from one first number value storage 195 compare.If described detected number is not lower than first number of predesignating of the burning cutoff of described first cylinder 5, that carries out set with regard to the output terminal with described second comparing unit 155, otherwise it is resetted.Wherein, described first number of predesignating is such as being applied in so rightly on the test stand, thereby identify on the one hand the frequency of the burning cutoff that causes by defective burning reliably, and those not can not cause set on the output terminal of described second comparing unit 155 because of burning cutoff that defective burning causes on the other hand.The output terminal of described second comparing unit 155 flows to ODER-element 40 equally.The output signal of this ODER-element 40 is described deexcitation signal D, if at least one input end in two input ends of this ODER-element 40 is set, that just is provided with described deexcitation signal D, and it is resetted.Under the situation that deexcitation signal D is set, by continuing to close suction valve 15 or outlet valve 20 interrupts the ventilation of described first cylinder 5.This point be equally applicable to internal-combustion engine 1 each other cylinder 6,7 ..., 12, concerning these cylinders, also to detect such deexcitation signal.For only being provided with described first probe unit 130 or only being provided with described second probe unit, 135 this situations, can abandon described ODER-element 40, and the output terminal of described first comparing unit 150 exist under the situation of described second probe unit 135 in the output signal of described in other words second comparing unit 155 under the situation that has described first probe unit 130 be exactly described deexcitation signal.In this case, described first comparing unit 150 second comparing unit 155 in other words is not only the inspection unit that is used to check the burning cutoff of not expecting, and is the deexcitation unit that is used for making where necessary the ventilation deexcitation of relevant cylinder.If not only be provided with described first probe unit 130, and be provided with described second probe unit 135, so described first comparing unit 150 and described second comparing unit 155 just form one first inspection unit, be used to check each cylinder the burning cutoff of not expecting have a situation, and described ODER-element 40 forms a deexcitation unit that is used to form deexcitation signal D.Hold reset when as long as this deexcitation signal D activates in the ventilation of relevant cylinder, the ventilation of so relevant cylinder just can not interrupted yet, and the burning cutoff that detects where necessary is not the burning cutoff of not expecting just.Have only the burning cutoff oversize or too frequent to interrupt the ventilation of relevant cylinder, just with described deexcitation signal D set, and keep interrupt status, always even for relevant cylinder this deexcitation signal D is resetted once more subsequently owing to the time of not expecting.
The output signal of the described ODER-element 40 among Fig. 3 is the deexcitation signal D that are used for the relevant cylinder with the burning circuit fire phenomenon that has detected.
Can for each cylinder 5,6 ..., 12 described device 25 is set.In this case, have one oneself device 25 for each cylinder 5,6 ..., 12 use, and oneself a deexcitation signal is arranged thus for its use.
Have under the situation of a plurality of suction valves and/or a plurality of outlet valves at a cylinder, make all suction valve deexcitations of relevant cylinder and/or make its all outlet valve deexcitation, interrupt ventilation with this.This means that all suction valves that continue to cut out relevant cylinder continue to cut out its all outlet valve in other words, thereby can't between air passageways that is set and the exhaust passage that set, take a breath by relevant cylinder.
Figure 4 illustrates a flow chart that is used for by an exemplary flow of method of the present invention.In program such as after triggering beginning by engine start, on program point 200, counter in described first probe unit 130 and second probe unit 135 is with numerical value 0 initialization, and in this external described second probe unit 135 a time measurement element or a crank angle measuring cell with numerical value 0 initialization.Then this time measurement element in other words the crank angle measuring cell start at program point 200.Be branched off into program point 205 subsequently.
At program point 205, described first probe unit 130 and described second probe unit 135 set the situation that exists to the burning cutoff of the cylinder of related device 25 with illustrated mode inspection.If detect the burning cutoff, that just is branched off into program point 210, otherwise is branched off into program point 220.
At program point 210, described first inspection unit 150 checks whether the burning cutoff that is detected is longer than the described very first time of predesignating and is longer than described first crank angle of predesignating in other words.If this is the case, that just is branched off into program point 230, otherwise is branched off into program point 215.
At program point 215, the numerical value of counter increases by 1.Be branched off into program point 220 subsequently.
At program point 220, described second probe unit 135 is by will between the respective value of described time measurement element and numerical value by described crank angle measuring cell more in other words between described second time of predesignating and described second crank angle of predesignating relatively checking whether passed through described second time of predesignating from described program point 200 and passed through described second crank angle of predesignating in other words.
If described second probe unit 135 finds that at program point 220 passed through described in other words second crank angle of predesignating of described second time of predesignating, that just is branched off into program point 225, otherwise turns back to program point 205 with regard to branch.
At program point 225, described second inspection unit 155 checks, whether the counter status of described counter reaches or surpass described first number of predesignating.If this is the case, that just is branched off into program point 230, otherwise branch turns back to program point 200, and described counter and time measurement element or crank angle measuring cell use numerical value 0 initialization again, and starts this time measurement element or crank angle measuring cell.This crank angle measuring cell from the signal of CKP, measure simply from the crank angle measuring cell since program is put 200 initialization by the inswept crank angle of bent axle.
At program point 230, described ODER-element 40 produces the deexcitation signal D of a set on its output terminal, thereby interrupts the ventilation of affiliated cylinder in illustrated mode.Leave this program subsequently.
Wherein, described device 25 and described thus probe unit 130,135 are set respectively to an identical cylinder.Such as here described first cylinder 5 being studied.
Described by method of the present invention and by device of the present invention such as being applied on the internal-combustion engine, wherein can be on such as the cylinder of half such as make all suction valves and/or all outlet valve deexcitations respectively by means of EHVS in all or part.But on principle,, be used for according to described that to interrupt the ventilation of this cylinder just enough for the burning cutoff that this cylinder detected if suction valve unique or a plurality of cylinders of internal-combustion engine or outlet valve can be by illustrated mode deexcitations.Along with the ventilation of relevant cylinder is interrupted, all suction valves of this cylinder or its all outlet valve continue closing up to sending an activation signal A for this cylinder once more at least always, utilize this activation signal A to take a breath for this cylinder once more, and activate at least one suction valve of relevant cylinder and at least one outlet valve to open and close normally.
Such as described first number of predesignating being selected to equal 0.When appearring in this cylinder, once unique burning cutoff just interrupts the ventilation of this cylinder thus.
Along with the ventilation of cylinder is interrupted, also can together interrupt its fuel supply.Recovery along with the ventilation of cylinder also can recover its fuel supply once more.
Claims (6)
1. be used for the method that operation has the internal-combustion engine (1) of one or more cylinders (5,6,7,8,9,10,11,12), wherein be at least one cylinder (5) cutoff inspection of burning, it is characterized in that, for this situation of fuel cutoff that occurs not expecting through inspection described at least one cylinder of discovery (5), interrupt the ventilation of described at least one cylinder (5).
2. by the described method of claim 1, it is characterized in that, if detect described at least one cylinder (5) burning at least one very first time predesignated of cutoff or first crank angle that at least one is predesignated, that just interrupts the ventilation of described at least one cylinder (5).
3. by the described method of claim 1, it is characterized in that, if detect the burning cutoff of at least one first number of predesignating of described at least one cylinder (5) at least one second time of predesignating or in second crank angle that at least one is predesignated, that just interrupts the ventilation of described at least one cylinder (5).
4. by each described method in the aforementioned claim, it is characterized in that, described at least one cylinder (5) comprises at least one suction valve (15) and at least one outlet valve (20), and the ventilation of described at least one cylinder (5) is interrupted because of described at least one suction valve (15) and/or described at least one outlet valve (20) deexcitation.
5. by the described method of claim 4, it is characterized in that, along with the deexcitation of described in other words at least one outlet valve of described at least one suction valve (15) (20), close described at least one suction valve (15) at least one outlet valve (20) in other words especially constantly.
6. be used for the device that operation has the internal-combustion engine (1) of one or more cylinders (5,6,7,8,9,10,11,12), wherein be provided with and be at least one cylinder (5) feeler mechanism (35) that cutoff checks of burning, it is characterized in that, deexcitation mechanism (40) is set, and the ventilation of described at least one cylinder (5) is interrupted for find this situation of burning cutoff that not expecting appears in described at least one cylinder (5) through the detection of described feeler mechanism (35) in these deexcitation mechanisms (40).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006009013A DE102006009013A1 (en) | 2006-02-27 | 2006-02-27 | Internal combustion engine e.g. petrol engine, operating method for vehicle, involves misfiring gas exchange of cylinder when combustion misfire is detected for preset time or crank angle such that inlet and/or outlet valves are deactivated |
| DE102006009013.6 | 2006-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101029605A true CN101029605A (en) | 2007-09-05 |
Family
ID=38319881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100847041A Pending CN101029605A (en) | 2006-02-27 | 2007-02-26 | Method and device for running gas engine with multi-cylinder |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR20070089069A (en) |
| CN (1) | CN101029605A (en) |
| DE (1) | DE102006009013A1 (en) |
| FR (1) | FR2897899A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213978A (en) * | 2013-05-31 | 2014-12-17 | 福特环球技术公司 | Methods and systems for cylinder bank misfire detection and reactivation |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11732668B1 (en) * | 2022-02-09 | 2023-08-22 | Ford Global Technologies, Llc | Systems and methods for cylinder misfire detection |
-
2006
- 2006-02-27 DE DE102006009013A patent/DE102006009013A1/en not_active Withdrawn
-
2007
- 2007-02-23 FR FR0753442A patent/FR2897899A1/en not_active Withdrawn
- 2007-02-26 CN CNA2007100847041A patent/CN101029605A/en active Pending
- 2007-02-26 KR KR1020070018784A patent/KR20070089069A/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213978A (en) * | 2013-05-31 | 2014-12-17 | 福特环球技术公司 | Methods and systems for cylinder bank misfire detection and reactivation |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20070089069A (en) | 2007-08-30 |
| DE102006009013A1 (en) | 2007-08-30 |
| FR2897899A1 (en) | 2007-08-31 |
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Application publication date: 20070905 |