WO2008012125A1 - Verfahren und vorrichtung zum betreiben einer brennkraftmaschine - Google Patents
Verfahren und vorrichtung zum betreiben einer brennkraftmaschine Download PDFInfo
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- WO2008012125A1 WO2008012125A1 PCT/EP2007/054935 EP2007054935W WO2008012125A1 WO 2008012125 A1 WO2008012125 A1 WO 2008012125A1 EP 2007054935 W EP2007054935 W EP 2007054935W WO 2008012125 A1 WO2008012125 A1 WO 2008012125A1
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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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
- F02B27/02—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
- F02B27/02—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means
- F02B27/0294—Actuators or controllers therefor; Diagnosis; Calibration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/104—Intake manifolds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/12—Other methods of operation
- F02B2075/125—Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber
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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
- F02D2200/04—Engine intake system parameters
- F02D2200/0406—Intake manifold pressure
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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
- F02D2200/04—Engine intake system parameters
- F02D2200/0406—Intake manifold pressure
- F02D2200/0408—Estimation of intake manifold pressure
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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
Definitions
- the invention relates to a method and a device for operating an internal combustion engine with an intake tract, in which a switching device for changing an effective intake pipe length and / or an effective intake tract volume is arranged.
- Precise setting of a desired air / fuel ratio in the combustion chambers of the cylinders of the internal combustion engine is particularly advantageous with regard to the lowest possible raw emissions of pollutants by the internal combustion engine.
- a significant contribution to the accurate setting of the air / fuel ratio in the respective Brenn syndrome ⁇ men of cylinders of the internal combustion engine can be influenced by a pre ⁇ zie knowledge of an intake manifold pressure in the respective suction pipe of the intake tract of the internal combustion engine.
- 0,820,559 Bl is also known from EP a imple mentation ⁇ such a dynamic physical model of the intake tract of the internal combustion engine.
- the object of the invention is to provide a method and apparatus for operating an internal combustion engine, which respectively enable a simple and reliable loading ⁇ drive of the internal combustion engine.
- the object is solved by the features of the independent claims.
- Advantageous embodiments of the invention are characterized in the subclaims.
- the invention is characterized according to a first aspect by a method and a corresponding device for operating an internal combustion engine with an intake tract, in which a switching device for changing an effective intake pipe length and / or an effective intake tract volume is arranged.
- a dynamic model of the intake tract is determined ⁇ an estimated manifold pressure dependent on at least one operating variable of the internal combustion engine. Adapting the dynamic model depends on - -
- a trim value that is adaptively adjusted depending on the estimated and measured intake manifold pressure is adaptively adjusted depending on the estimated and measured intake manifold pressure.
- an estimated deadband intake manifold pressure is determined based on the assumption of adopting the previous shift position of the shift device and inhibiting the adaptive adjustment of the trim value, and second, an estimated new intake manifold pressure becomes dependent from the model assuming the assumption of the changed shift position of the shift device and inhibiting the adaptive adjustment of the trim value.
- an actual shift position of the shift device is detected with respect to the measured intake manifold pressure. In this way, the actual switching position of the switching device can be detected particularly reliably and at the same time simply, in particular since the influence of further disturbance variables of the model in this context has only a negligible influence.
- the estimated Althuss- and restarting Saugrohrdruck is determined as long after controlling the changing of the switching position of the switching device until one of the estimated Althuss- or new intake manifold pressure in a predetermined manner more correlated to the measured intake manifold pressure.
- a change in the switching position of the switching device is controlled, further an adapted estimated new intake manifold pressure is determined depending on the model on the assumption of taking the changed switching position of the switching device and continuing the adaptive adjustment of the trim value. If the actual shift position coincides with the controlled shift position, the further adaptively adjusted trim value is then used as the basis for the model. In this way a ⁇ influences is recognized by possible disturbances during the period until the actual switching position equal to enter the trim value and then taken into account the current conditions, with this trim value the dynamic model are corrected entspre ⁇ accordingly after the actual switching Stel ⁇ development was detected.
- the invention is characterized according to a second aspect by a method and a corresponding device for operating an internal combustion engine with an intake tract, in which a switching device for changing an effective intake pipe length and / or an effective intake tract volume is arranged.
- a dynamic model of the intake tract ⁇ an estimated air mass flow of at least one operating variable of the internal combustion engine ermit ⁇ telt dependent.
- An adaptation of the dynamic model is dependent on a trim value, which is adaptively adjusted depending on the estimated and a measured air mass flow. If - -
- an estimated Altwolfs- air mass flow is determined depending on the model assuming the adoption of the previous switching position of the switching device and inhibiting the adaptive adjustment of the trim value and on the other hand, an estimated new air mass flow becomes dependent on the model is determined on the assumption of taking the changed switching position of the switching device and inhibiting the adaptive adjustment of the trim value.
- an estimated new air mass flow becomes dependent on the model is determined on the assumption of taking the changed switching position of the switching device and inhibiting the adaptive adjustment of the trim value.
- the estimated old-position air mass flow and the estimated new air mass flow is detected with respect to the measured air mass flow to an actual switching position of the switching device. In this way, the actual switching position of the switching device can be detected particularly reliably and at the same time simply, in particular since the influence of further disturbance variables of the model in this context has only a negligible influence.
- a change in the switching position of the switching device is controlled, further an adapted estimated new air mass flow is determined depending on the model assuming the change in switching position of the switching device and continuing the adaptive adjustment of the trim value , If the actual shift position coincides with the controlled shift position, the further adaptively adjusted trim value is then used as the basis for the model.
- the further adaptively adjusted trim value is then used as the basis for the model.
- FIGS. 2 and 3 show a flow chart of a program for operating the internal combustion engine, which is executed in the control device, and - -
- FIG. 4 shows a further flowchart of a further program for operating the internal combustion engine, which is executed in the control device.
- An internal combustion engine (1) comprises an intake section 1, an engine block 2, a cylinder head 3 and an exhaust manifold 4.
- the intake 1 preferably comprises a throttle ⁇ flap 5, further comprising a manifold 6 and an intake manifold 7, through to a cylinder Zl an inlet channel is guided in the engine block 2.
- a switching device 9 for changing an effective intake pipe length and / or an effective intake tract volume is present in the intake tract.
- the switching device can be provided, for example, as a switching flap in the respective suction ⁇ pipe 7 and thus set depending on their switching position an effective intake pipe length of the suction pipe 7.
- the switching device 9 can also be designed so that the sucked air flows depending on the switching position beispielswei ⁇ se through different sections of the suction pipe 7, which have a different length and thus the effective intake pipe length is switchable.
- the switching device 9 can also be designed so that changes the used volume of the intake depending on their switching position.
- the switching device 9 can be so out ⁇ forms to allow either a vibration charging or a resonance charging in the combustion chamber of the cylinder Zl.
- the switching position dependent on, for example, the speed or other load variable of the internal combustion engine may then be sufficient ⁇ on the number of different switching positions of the switching device in a plurality of operating ranges of the internal combustion engine, an increased filling of the respective combustion chamber of the cylinder Z-dependent.
- the engine block further comprises a crankshaft 8 which is ge ⁇ coupled via a connecting rod 10 to the piston 11 of the cylinder Zl.
- the cylinder head 3 includes a valve gear with a gas ⁇ inlet valve 12 and a gas cylinder 13.
- the further ⁇ head 3 includes an injector 18 and an ignition ⁇ candle 19th
- Actuating signals for controlling the actuators are implemented by means of corre ⁇ sponding actuators.
- the control device 25 may also be referred to as a device for controlling the internal combustion engine or as an apparatus for operating the internal combustion engine.
- the sensors are a pedal position sensor 26, which detects an accelerator pedal position of an accelerator pedal 27, a Heilmas ⁇ sensensor 28, which detects an air mass flow upstream of the throttle valve 5 as measured air mass flow MAF_MES, a throttle position sensor 30 which detects a throttle position TPS, a temperature sensor 32, which a Intake air temperature T_IM detected, a Saugrohr- pressure sensor 34, which detects a measured intake manifold MAP_MES in the collector 6, a Kurbelwellenwinkelsen- sensor 36, which detects a crankshaft angle, which is then assigned a speed.
- a separate pressure sensor can be provided for detecting the pressure of the throttle valve 5 PUT upstream in the on ⁇ suction tract. 1
- this can also be carried out by suitable signal processing of the measurement signal of the intake pipe pressure sensor 34, for example, in an operating condition of the full ⁇ load in which a pressure drop across the throttle valve 5 is negligible or is accurately modeled.
- any subset of said sensors may be present, or additional sensors may be present.
- the actuators are, for example, the throttle valve 5, the gas inlet and gas outlet valves 12, 13, the Wegvorrich ⁇ device 9, the injection valve 18 or the spark plug 19th
- the internal combustion engine preferably also has additional cylinders Z2 to Z6, to which respective respective actuating members and sensors and also intake pipes 7 are assigned.
- a reduced flow cross section ARED of the intake manifold 7 in the region of the throttle valve 5 is determined as a function of the throttle valve position TPS.
- a suitable bedatetes map or geeig ⁇ designated bedatete characteristic can be provided for example.
- a step S3 it is then checked whether a modifier ⁇ countries the switching position of the switching device 9 is controlled, or a flag F is set.
- the flag M is preferably reset at the start. Controlling a changed ⁇ th switching position of the switching device 9 is preferably carried out _
- step S4 a trim value TRIM preferably dependent MAP_EST and the supplied arrange from the associated with a previous pass of the step S8 ermit ⁇ telten estimated intake pipe pressure
- the measured intake manifold pressure MAP_MES is adapted adaptively.
- the trim value TRIM is preferably used for correction of the reduced flow cross section ARED but can also be used in ⁇ play, for correction of the pressure PUT of the throttle valve upstream 5.
- the trimming is ⁇ value TRIM preferably as in the step S4 adaptively adjusted so that a deviation between the estimated value MAP_EST and the measured intake manifold pressure MAP_MES is minimized.
- values of the trimming value TRIM determined during previous passes are therefore also taken into account.
- a sectionally linear approach is preferably used, preferably with an offset VOL_EFF_OFS of a volumetric efficiency and a gradient VOL_EFF_SLOP of the volumetric efficiency.
- the offset VOL_EFF_OFS and the slope of the VOL_EFF_SLOP Volumenwir ⁇ kung grades are at least determined depending on the switching position of the switching device 9 SK in the step S6.
- a corresponding section-wise linear approach for modeling the swallow line is also disclosed in EP 0820 559 B1, _ -
- a step S8 the estimated intake manifold pressure MAP_EST
- the duration of a cylinder segment with respect to the crankshaft angle is then used for the current calculation cycle, which is indicated by "[k]" is determined.
- the current calculation cycle is preferably a current cylinder segment. Is the ⁇ one who angle, For example, in a four-cycle, four-cylinder four-cycle engine, the cylinder segment is 180 degrees crankshaft angle, which is the division of the total angle for a cycle divided by the number of cylinders.
- [kl]" in this context represents the previous calculation cycle, that is, for example, the preceding cylinder segment .
- the determination of the estimated intake pipe pressure MAP_EST is effected by means of a dynamic physical model of the intake ⁇ tract whose basic concrete embodiment in ⁇ play, in EP 0820 559 Bl or in the textbook “Handbook internal combustion engine", which has already been cited in the introduction, on pages 557 is explained in detail to 559 and de ⁇ ren content is hereby included in this respect.
- the Ermit ⁇ stuffs of the estimated intake pipe pressure MAP_EST takes place by means of the dynamic physical model depends on the reduced flow cross section ARED taking into account preferably of the trim value TRIM, the offset and the slope VOL_EFF_OFS VOL_EFF_SLOP of Volumenwir- _ _
- step S2 an approach is chosen, for example, the ⁇ pondiert to the procedure according to EP 0820559 Bl korres and there in particular the relationship 2.7 equivalent. Subsequently, the processing, optionally after a predefinable waiting period or a predetermined crankshaft angle is continued again in step S2.
- step S3 If, on the other hand, the condition of step S3 has been met, the trimming value TRIM is determined in a step S10, but the adaptive adjustment of the trimming value TRIM is suppressed, that is to say trimming values TRIM adaptively adapted in previous calculation cycles are calculated.
- a step S12 the offset VOL_EFF_OFS and the gradient VOL_EFF_SLOP of the volumetric efficiency are then determined on the basis of a renewal SK_N of the switching position SK of the switching device 9, wherein the renewal SK_N corresponds to the controlled changed switching position SK of the switching device. Otherwise, the procedure according to the step S12 corresponds to that according to the step S6.
- step S14 an estimated new intake manifold pressure MAP_EST_N is determined by the dynamic model for determining the estimated intake manifold pressure MAP_EST, based on the values obtained in steps S10 and S12. _
- step Sl 6 VOL_EFF_OFS the offset and the slope VOL_EFF_SLOP the volumetric efficiency for a Old ⁇ position SK_A the switching position of the switching device SK are determined, wherein the Alt ein SK_A corresponds to that prior to controlling the changed switching position SK.
- step S3 was newly fulfilled by controlling the changing of the switching position SK of the switching device 9 and thus steps S4 to S8 were executed in previous calculation cycles.
- the estimated intake manifold pressure MAP_EST determined in the respective preceding calculation cycle of step S8 is then used.
- an estimated value difference DMAP is determined depending on an amount of the estimated ABS Altwolfs induction pipe pressure MAP_EST_A minus the estimated ge ⁇ Neuwolfs induction pipe pressure MAP_EST_N. _
- a step S22 it is checked whether the estimated value difference DMAP is greater than a suitably predetermined threshold value THD.
- the threshold THD is set so as to be ⁇ vorzugt only after exceeding the estimated value difference DMAP a reliable recognition of the actual switching position of the switching device 9 SK is possible with respect to the threshold THD by the following steps.
- step S22 If the condition of step S22 is thus not met, the processing, if appropriate after the predetermined waiting time or the predetermined crankshaft angle, is continued again in step S2.
- step S24 it is checked whether the absolute value ABS of a Diffe ⁇ ence of the estimated intake manifold pressure MAP Altgoris-_EST_A and the measured intake manifold pressure MAP_MES is smaller than the amount of ABS to a difference of the estimated intake pipe pressure Neu eins- MAP _EST_N and the measured intake manifold pressure MAP_MES.
- step S24 If the condition of step S24 is satisfied, the old position SK_A is detected in a step S26 as the actual shift position SK of the shift device 9, and thus, despite the controlled changing of the shift position SK of the shift device 9, no actual change in the shift position SK has taken place. - -
- step S24 If, on the other hand, the condition of step S24 is not satisfied, the switching position SK is then assigned the renewal SK_N in a step S28 and thus recognized as the actual switching position SK.
- the condition of step S24 may be extended such that the ur ⁇ nal condition of the step S24 must be satisfied for multiple passes of the step S24 before then ent ⁇ speaking the steps are executed S26 or S28. In this case, a feedback from the step S24 to the step S2 is then still provided.
- the flag M is also preferably reset.
- the switching position SK determined in accordance with steps S26 or S28 is then taken into account.
- the correct actual switching position of the switching SK ⁇ device 9 can be determined by the parallel determination of the estimated intake pipe pressure Alt eins-MAP_EST_A and the estimated intake manifold pressure Neu eins-MAP_EST_N with high reliability.
- steps S30 to S34 are also preferably executed parallel to the steps S10 to S14.
- the step S30 un ⁇ differs from step S12 in that a background trim value TRIM_B in the step S30 by adaptively adjusting the background trim value TRIM_B depending on determined in respective passes of the step S34 Toggle-fitted estimated Neu somehows-intake manifold pressure MAP_EST_AD_N and associated measured intake manifold pressure MAP_MES ermit ⁇ tent is determined. If in the previous calculation cycle of the program according to the Figures 2 and 3, the condition of Schrit ⁇ tes S3 was not met, then in step S30, the to- _
- the step S32 corresponds to the step S12.
- the adjusted estimated Neuwolfs- intake manifold pressure MAP_EST_AD_N is then determined as a function of the dynamic physical model of the intake manifold pressure korrespondie ⁇ rend to the procedure according to step S14, where the Hin ⁇ tergrund trim value TRIM_B is taken into consideration and for the He ⁇ provide the in the previous calculation cycles, the estimated intake manifold pressure MAP_EST and the time derivative MAP_DT_EST [k-1] are determined using the adjusted estimated new-beginning intake manifold pressure MAP_EST_AD_N determined in the corresponding previous calculation cycle.
- step S28 the trim trim value TRIM for subsequent processing of step S4 can be assigned the background trimming value TRIM_B.
- the Pro ⁇ program comprises the steps Sl to S18 and S30 to S34 preferred according to the Figures 2 and 3.
- an estimated old air mass flow MAF_EST_A is dependent on the estimated - -
- Alt eins intake manifold pressure MAP_EST_A, the pressure PUT upstream of the throttle valve 5 and the reduced flow area ARED determined. This can be done, for example, according to the procedure disclosed in EP 0 820 559 B1, which is hereby included in this regard, and in particular according to the relationship 2.3 there. Further, in step S40, an estimated new air mass flow rate MAF_EST_N is also determined depending on the estimated new intake manifold pressure MAP_EST_N, the pressure PUT upstream of the throttle valve 5, and the reduced flow area ARED.
- an adjusted estimated new air mass flow rate MAF_N_AD_EST is also determined in step S40 depending on the adjusted estimated new intake manifold pressure MAP_EST_AD_N, the pressure PUT upstream of the throttle valve 5, and the reduced flow area ARED.
- an air mass estimated value difference DMAF is determined depending on an amount ABS of the estimated postponement air mass flow MAF_EST_A minus the estimated new air mass flow rate MAF_EST_N.
- a step S42 it is checked whether the air mass estimated value difference DMAF is greater than the suitably predetermined threshold value THD.
- the threshold value THD is predetermined such that reliable detection of the actual switching position SK of the switching device 9 is preferably possible only after exceeding the estimated value difference DMAF with respect to the threshold value THD on the basis of the following steps. _ _
- step S42 If the condition of step S42 is thus not fulfilled, the processing, if appropriate after the predetermined waiting time or the predetermined crankshaft angle, is continued again in step S2.
- step S44 it is checked in step S44 whether the absolute value ABS of a Diffe ⁇ ence of the estimated Althuss-air mass flow MAF_EST_A and the measured air mass flow MAF_MES is smaller than the amount of ABS to a difference of the estimated Neuwolfs- air mass flow MAF_EST_N and the measured air mass flow MAF_MES.
- step S44 If the condition of step S44 is met, the old position SK_A is detected in a step S46 as the actual shift position SK of the shift device 9, and thus, despite the controlled changing of the shift position SK of the shift device 9, no actual change in the shift position SK has taken place.
- step S44 If, on the other hand, the condition of step S44 is not satisfied, the switching position SK is then assigned the renewal SK_N in a step S48 and thus recognized as the actual shift position SK.
- the condition of step S44 may be extended such that the ur ⁇ nal condition of the step S44 must be satisfied for multiple passes of the step S44 before then ent ⁇ speaking the steps are executed S46 or S48.
- the flag M is also preferably reset.
- the switching position SK determined in accordance with steps S46 or S48 is then taken into account.
- the trim value TRIM is preferably from ⁇ pending MAF_EST and the associated measured air mass flow MAF_MES adaptively adjusted from the value determined in connection with a previous pass of the step S40 estimated air mass senstrom in the step S4 ( Figure 3) ,
- the trim value TRIM is preferred as in the step S4 adaptively fitted to ⁇ that a deviation between the estimated air mass flow MAF_EST and the measured air mass flow MAF_MES is minimized.
- values of the trimming value TRIM determined during previous passes are therefore also taken into account.
- the background trim value TRIM_B is determined in step S30 by adaptively adjusting the background trim value TRIM_B as a function of matched adjusted newest mass air flow MAF_EST_AD_N and the associated measured mass air flow MAF_MES determined in respective passes of step S34 , If in the previous calculation ⁇ cycle of the program according to the figures 2 and 3, the condition of step S3 was not satisfied, so in step S30 the last valid trim value TRIM is assigned to the background trim value TRIM_B.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/302,556 US8489307B2 (en) | 2006-07-28 | 2007-05-22 | Method and device for operating an internal combustion engine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102006035096.0A DE102006035096B4 (de) | 2006-07-28 | 2006-07-28 | Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine |
DE102006035096.0 | 2006-07-28 |
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WO2008012125A1 true WO2008012125A1 (de) | 2008-01-31 |
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PCT/EP2007/054935 WO2008012125A1 (de) | 2006-07-28 | 2007-05-22 | Verfahren und vorrichtung zum betreiben einer brennkraftmaschine |
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US (1) | US8489307B2 (de) |
KR (1) | KR101030175B1 (de) |
DE (1) | DE102006035096B4 (de) |
WO (1) | WO2008012125A1 (de) |
Families Citing this family (4)
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DE102015214179B3 (de) * | 2015-07-27 | 2016-08-18 | Mtu Friedrichshafen Gmbh | Verfahren zur Kompensation eines Ventildrifts einer Brennkraftmaschine |
DE102017209386B4 (de) * | 2017-06-02 | 2024-05-08 | Vitesco Technologies GmbH | Verfahren zur Ermittlung der aktuellen Trimmung des Einlasstraktes eines Verbrennungsmotors im Betrieb |
US10378457B2 (en) | 2017-11-07 | 2019-08-13 | Caterpillar Inc. | Engine speed control strategy with feedback and feedforward throttle control |
KR20210135706A (ko) * | 2020-05-06 | 2021-11-16 | 현대자동차주식회사 | 엔진 공기량 연산 오차 방지 방법 및 엔진 시스템 |
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-
2006
- 2006-07-28 DE DE102006035096.0A patent/DE102006035096B4/de not_active Expired - Fee Related
-
2007
- 2007-05-22 WO PCT/EP2007/054935 patent/WO2008012125A1/de active Application Filing
- 2007-05-22 US US12/302,556 patent/US8489307B2/en not_active Expired - Fee Related
- 2007-05-22 KR KR1020087029570A patent/KR101030175B1/ko active IP Right Grant
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Also Published As
Publication number | Publication date |
---|---|
DE102006035096A1 (de) | 2008-01-31 |
KR20090016688A (ko) | 2009-02-17 |
US20090157280A1 (en) | 2009-06-18 |
KR101030175B1 (ko) | 2011-04-18 |
US8489307B2 (en) | 2013-07-16 |
DE102006035096B4 (de) | 2014-07-03 |
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