WO2009124808A1 - Verfahren und vorrichtung zum betreiben einer brennkraftmaschine - Google Patents
Verfahren und vorrichtung zum betreiben einer brennkraftmaschine Download PDFInfo
- Publication number
- WO2009124808A1 WO2009124808A1 PCT/EP2009/052436 EP2009052436W WO2009124808A1 WO 2009124808 A1 WO2009124808 A1 WO 2009124808A1 EP 2009052436 W EP2009052436 W EP 2009052436W WO 2009124808 A1 WO2009124808 A1 WO 2009124808A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- trim
- control variable
- exhaust gas
- variable
- determined
- Prior art date
Links
Classifications
-
- 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
- F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
- F02D41/1441—Plural sensors
-
- 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
- F02D41/1477—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation circuit or part of it,(e.g. comparator, PI regulator, output)
- F02D41/1482—Integrator, i.e. variable slope
-
- 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
- F02D41/1477—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation circuit or part of it,(e.g. comparator, PI regulator, output)
- F02D41/1483—Proportional component
-
- 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
- F02D41/1493—Details
- F02D41/1495—Detection of abnormalities in the air/fuel ratio feedback system
-
- 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
- F02D41/2454—Learning of the air-fuel ratio control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—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
Definitions
- the invention relates to a method and a device for operating an internal combustion engine.
- exhaust gas aftertreatment systems are used in internal combustion engines, which convert the pollutant emissions which are generated during the combustion process of the air / fuel mixture in the respective cylinders into harmless substances.
- catalytic converters which convert carbon monoxide, hydrocarbons and nitrogen oxides into harmless substances.
- a linear lambda control with a lambda probe which is arranged upstream of an exhaust gas catalytic converter, and a binary lambda probe which is located downstream of the exhaust gas arranged gas catalyst is known.
- a lambda setpoint is filtered by means of a filter that takes into account gas runtimes and sensor behavior.
- the lambda setpoint value filtered in this way is the control variable of a PII 2 D lambda controller whose control variable is an injection quantity correction.
- the signal of the linear lambda probe is converted into a recorded lambda value via a stored characteristic curve. This characteristic is subject to a correction by means of a trim control.
- the trim controller associated with the trim control is designed as a PI controller, which utilizes the less cross-sensitivity exposed Nachkatsonden, which is preferably assigned by a binary jump probe, which is arranged downstream of the catalytic converter.
- the trim control serves to monitor the catalytic conversion and fine regulation of the mixture.
- the object on which the invention is based is to provide a method and a device for operating an internal combustion engine, which contributes to a low-emission operation of the internal combustion engine.
- the invention is characterized by a method and a corresponding device for operating an internal combustion engine with at least one cylinder, which is associated with a fuel injection valve for metering fuel.
- the internal combustion engine also has an exhaust gas tract in which an exhaust gas catalytic converter is arranged. Furthermore, a first exhaust gas probe is arranged upstream or in the exhaust gas catalytic converter in the exhaust gas tract, and a second exhaust gas probe is arranged downstream of the exhaust gas catalytic converter.
- a lambda control is provided whose control variable is determined as a function of a measurement signal of the first exhaust gas probe and whose manipulated variable is to be metered by means of the fuel injection valve Fuel mass acts.
- a trim control is provided whose control variable is determined as a function of a measurement signal of the second exhaust gas probe and whose first trim control variable is determined as a function of a P controller component of the trim control and whose second trim control variable is determined as a function of an I controller component of the trim control.
- a decision is made as to whether the second trim size should be adjusted. If it has been decided that an adjustment of the second trim height should be made, an adjustment of the second trim size is performed.
- the second trim size is the regular task to compensate for permanent control deviations caused, for example, by characteristic shifts of the first exhaust gas probe. Such characteristic shifts can arise, for example, due to aging and / or contamination.
- the I controller proportion is particularly suitable to make the I controller proportion correspondingly slow, so as not to unnecessarily react to very short-term disturbances, such as those that can be caused by a tank venting.
- the second trim control variable can only slowly correct such control deviations by integrating the control deviations. In this period, it is then necessary that a correction takes place by means of the first trim height variable and thus dependent on the P controller proportion.
- the first Trimmstellgroße is considered in contrast to the second Trimmstellgroße only in selected operating conditions. As a result, the changed circumstances are not taken into account outside of these selected operating states and thus an increased emission of pollutants takes place.
- Trim size and by deciding whether to adjust the Trim size and then then performing the adjustment of the trim size can be compared to very quickly made a contribution to reduce such pollutant emissions again.
- a comparison of the first trim control variable or a function of the determined trim characteristic is performed with at least one predetermined trim threshold and decided depending on the comparison, whether an adjustment of the second trim control is to take place. In this way, the evaluation can be carried out particularly easily.
- the predetermined rating is performed depending on a filtered first trim size. Outliers of the first trim control variable can be filtered out in a suitable manner in this way, and thus an even more precise operation of the internal combustion engine can take place.
- the decision as to whether to adapt the second trim control variable can also be made depending on whether the gradient of the second trim control variable has the same sign as the second trim control variable.
- an adaptation value is predetermined, by means of which the adjustment of the trim control variable is carried out by means of the second trim control variable. In this way, a simple adjustment of the second trim control variable is possible.
- the adaptation value is determined as a function of a rotational speed or a variable representing the load on the internal combustion engine. In this way, a particularly rapid and precise reduction of pollutant emissions can be contributed.
- the adaptation value is determined as a function of the first trim control variable.
- FIG. 2 shows a block diagram of a part of the control device of the internal combustion engine
- FIG. 4A to 4E waveforms plotted over time.
- An internal combustion engine ( Figure 1) comprises an intake manifold 1, an engine block 2, a cylinder head 3 and an exhaust tract 4.
- the intake manifold 1 preferably comprises a throttle valve 5, further comprising a collector 6 and a suction pipe 7, which is connected to a cylinder Z1 via an inlet passage in the engine block 2 is guided.
- the engine block 2 further includes a crankshaft 8, which is coupled via a connecting rod 10 with the piston 11 of the cylinder Zl.
- the cylinder head 3 comprises a valve drive with a gas inlet valve 12 and a gas outlet valve 13.
- the cylinder head further comprises an injection valve 18 and a spark plug 19.
- the injection valve 18 can also be arranged in the intake pipe 7.
- an exhaust gas catalyst 21 is arranged, which is formed for example as a three-way catalyst. Further, for example, in the exhaust tract 4, a further catalytic converter is arranged, which is designed as a NOX catalyst.
- a control device 25 is provided which is associated with sensors which detect different measured variables and in each case determine the value of the measured variable. Operating variables also include variables derived from these in addition to the measured quantities. The control device 25 is designed to determine actuating variables dependent on at least one of the operating variables, which are then converted into one or more actuating signals for controlling the actuators by means of corresponding actuators.
- the control device may also be referred to as a device 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, an air mass sensor 28, which detects an air mass flow upstream of the throttle valve 5, a first temperature sensor 32, which detects an intake air temperature, a Saugrohr horrsen- sor 34, which an intake manifold pressure in the collector 6, a crankshaft angle sensor 36, which detects a crankshaft angle, which is then assigned a rotational speed N.
- a first exhaust gas probe 42 is provided, which is arranged upstream of the catalytic converter 21 or in the catalytic converter 21 and which detects a residual oxygen content of the exhaust gas and whose measurement signal MS1 is characteristic for the air / fuel ratio in the combustion chamber of the cylinder upstream of the first exhaust gas probe 42 before the oxidation of the fuel, hereinafter referred to as the air / fuel ratio in the cylinders Zl to Z4.
- the first exhaust gas probe 42 may be disposed in the exhaust gas catalyst 21 such that a part of the catalyst volume is upstream of the first exhaust gas probe 42.
- the first exhaust gas probe 42 may be a linear lambda probe or for example also a binary lambda probe.
- a second exhaust gas probe 44 is arranged downstream of the catalytic converter 21, which is used in particular in the context of a trim control and which is preferably used as a fold binary lambda probe is formed.
- the second exhaust gas probe can in principle also be designed, for example, as a linear lambda probe and its measurement signal is denoted by MS2.
- 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 injection valve 18 or the spark plug 19.
- cylinders Z2 to Z4 are preferably also provided, to which then a corresponding actuator and, if appropriate, sensors are assigned.
- a predefined setpoint value LAMB_SP_RAW of the air / fuel ratio can, in principle, be permanently predetermined in a particularly simple embodiment. However, it is preferably determined, for example, as a function of a current operating mode of the internal combustion engine, such as a homogeneous or a shift operation, and / or depending on operating variables of the internal combustion engine.
- the predetermined target value LAMB SP RAW of the air-fuel ratio in the combustion chambers of the cylinders may be set to be approximately the stoichiometric air-fuel ratio.
- the predetermined desired value LAMB_SP_RAW of the air / fuel ratio can also be influenced by a second trim control variable TRIM_SG2.
- a forced excitation signal ZWA is determined, and in the first summation point SUMl, the predetermined desired value LAMB_SP_RAW of the air / fuel ratio is modulated with the forced excitation signal.
- the forced excitation signal ZWA is, for example, a rectangular trapezoidal or triangular signal.
- the initial size of the initial Summing point SUMl is then a predetermined air / fuel ratio in the combustion chambers of the cylinder Zl to Z4.
- the predetermined air-fuel ratio LAMB_SP is supplied to a block B2 which includes a pilot control and generates a lambda pilot control value LAM_FAC_PC depending on the predetermined air-fuel ratio LAMB_SP.
- block B3 which is designed to take into account a gas running time and a sensor behavior of the first exhaust gas probe 42, wherein, for example, a suitable filter is formed in block B3 for this purpose.
- the predetermined air / fuel ratio LAMB_SP in the combustion chambers of the cylinders Zl to Z4 is supplied in block B3 and the output side then fed a correspondingly filtered predetermined air / fuel ratio of a second summation SUM2.
- the second summation point SUM2 depending on the predetermined air / fuel ratio LAMB_SP and a detected air
- Fuel ratio LAMB_AV determined by forming a difference, a control difference D LAMB, which is the input to a block B4.
- the detected air / fuel ratio LAMB_AV is determined as a function of the measurement signal MS1 of the first exhaust gas probe 42 in a block BIO by means of a characteristic stored there, preferably taking into account a first trim control variable TRIM_SG1, wherein, for example, depending on the first trim control variable TRIM SGl a shift the characteristic curve can take place.
- the filtering in the block B3 can take into account not only gas run times and the sensor behavior but also the behavior of the catalytic converter 21.
- a linear lambda controller is formed, preferably as a PII 2 D controller.
- the manipulated variable of the linear Lambda controller of block B4 is a lambda control value LAM_FAC_FB.
- a block B6 is provided in which, depending on a load size LOAD, which may be, for example, an air mass flow, and the predetermined air / fuel ratio LAMB_SP in the combustion chambers of the cylinders Z1 to Z4, a basic mass MFF to be metered is determined.
- LOAD load size
- LAMB_SP air / fuel ratio
- a trim controller is formed, which is part of a trim control.
- the trim controller, the measurement signal MS2 of the second exhaust gas probe 44 is supplied on the input side.
- the block B8 is designed to form a control difference for the trim controller depending on a reference value of the measurement signal MS2 of the second exhaust probe 44 and the measurement signal MS2 of the second exhaust probe 44, which is then input in the trim controller.
- the trim controller is designed as a PI controller. It thus has a P-controller component and an I-controller component, to which the first trim control variable TRIM SG1 or the second trim control variable TRIM_SG2 are assigned on the output side.
- the first trim control size TRIM SG1 acts, for example, in the block BIO on the characteristic curve provided there, while, for example, the second trim control variable TRIM_SG2 influences the predetermined desired value LAM ' ⁇ _SP_RAW of the air / fuel ratio.
- the second trim control variable TRIM_SG2 can also be fed to the block BIO and thus be used to influence the determination of the detected air / fuel ratio LAMB AV.
- the first trimming Manipulated variable TRIM_SG1 be provided for influencing the predetermined target value LAMB SP RAW the air / fuel ratio.
- the trim controller is designed to use the first trim control variable TRIM SG1 in contrast to the second trim control variable TRIM_SG2 only in selected operating states for influencing the determination of the detected air / fuel ratio LAMB_AV or the predetermined setpoint LAMB_SP_RAW of the air / fuel ratio.
- the I-controller parameter associated with the I-controller component is suitably designed to be slow and weak, so as not to respond to short-term disturbances, such as those caused by tank ventilation.
- permanent control deviations are to be compensated, which are caused by characteristic shift of the first exhaust gas probe 42. Such characteristic shifts can arise, for example, due to aging and / or contamination.
- An adjustment depending on the control difference applied to the trim controller also takes place for both the P controller part and the I controller part only in predetermined operating states.
- the adjustment of the I-controller component depends on the control difference applied to the trim controller only in quasi-stationary operating states of the internal combustion engine.
- the adjustment of the P-controller component as a function of the control difference applied to the trim controller is preferably carried out only in quasi-stationary operating states, wherein in comparison to the I-controller.
- Regulator part regularly the requirement for the respective sta- tiffity of the operating state at the P controller part is significantly lower and thus the P controller part in real operation is significantly more often adjusted depending on the voltage applied to the input of the trim controller control difference.
- a binary lambda control can also be used with ordered binary Lamdaregler be provided and be assigned to the lambda regulation of the trim controller.
- a flow chart of a program for operating the internal combustion engine is explained in more detail below with reference to FIG.
- the program is preferably stored in a program memory of the control device 25 and is processed during operation of the internal combustion engine in a computing unit of the control device 25.
- the program is started in a step S1, for example, in a timely manner to a start of the internal combustion engine.
- program variables may be initialized in step S1.
- a step S2 the currently available first trim control variable TRIM_SG1 is read.
- filtering of the first trim control variable TRIM_SG1 can also take place, for example with low-pass filtering, and a filtered first trim control variable TRIM_SG1_FIL can thus be determined.
- the filtered first trim control variable TRIM_SG1_FIL is then used in the following steps.
- a step S4 it is subsequently checked whether the first trim control variable TRIM SG1 is greater than a predefined trim threshold TRIM_THD which has been previously determined, for example, by tests on an engine test bench or by simulations.
- the evaluation as to whether the first trim control variable TRIM_SG1 is greater than the trim threshold TRIM_THD may include, for example, checking whether this is the case for a predetermined time period T THD or for a given mass air flow integral MAF_INT_THD. In this case, it may also be sufficient if the predefined time duration T_THD is composed of a plurality of time periods spaced apart from one another, as is explained below, for example, with reference to the signal profiles. The same applies to the given mass air flow MAF INT THD. Is the condition of step S4 is not satisfied, the processing is continued again in step S2.
- an adaptation value ADJ is determined in a step S6.
- the adaptation value ADJ can be fixed, for example, in the simplest case. However, it can also be dependent on a rotational speed N and / or a load size and / or the first trim control variable TRIM_SG1 and determined, for example, by means of a characteristic map.
- a step S8 the adjustment of the second trim control variable TRIM_SG2 takes place, even if the operating conditions for adjusting the second trim control variable TRIM SG2 are not present depending on the control deviation applied to the trim controller.
- a step S10 is executed, in which the first trim control variable TRIM SG1 is adjusted by means of the adaptation value ADJ preferably substantially complementary to the second trim control variable TRIM_SG2 in comparison to the step 8.
- step S8 Following the step S10, or if this is not present, following the step S8, the processing is then continued again in the step S2.
- the presence of the first activation requirement AKT1 has the consequence that the first trim control variable TRIM_SG1 both updates depending on the control difference applied to the trim controller means is adapted as well as acts to influence the linear lambda control, so in particular acts to adapt the characteristic curve for determining the detected air / fuel ratio depending on the measurement signal MSl the first exhaust gas probe 42nd
- the presence of the second activation requirement AKT2 has the consequence that, in principle, in this case the second trim control variable TRIM SG2 can be adjusted as a function of the control difference applied to the trim controller. Such an adjustment thus takes place in accordance with the signal curve of FIG. 4A, for example at the times t2, t3.
- the second trim control variable TRIM SG2 is adjusted in each case when the step S8 passes through the adaptation value ADJ at times t4, t5, t6 and t7. It is plotted on the basis of FIG. 4C that adaptation takes place at the earliest between two adjustments, if for the given one
- step S4 it is optionally also possible to check whether a gradient of the second trim control variable exceeds a given integral threshold value and only, if this is the case, the processing in step S6 is continued.
- step S6 it can also be checked in this context whether the gradient of the second trim control variable has the same sign as the first trim control variable TRIM SG1 and only in this case, the processing in step S6 will be continued.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/936,728 US8387592B2 (en) | 2008-04-09 | 2009-03-02 | Method and apparatus for operating an internal combustion engine |
KR1020107025170A KR101532536B1 (ko) | 2008-04-09 | 2009-03-02 | 내연 기관의 작동 장치 및 방법 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008018013A DE102008018013B3 (de) | 2008-04-09 | 2008-04-09 | Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine |
DE102008018013.0 | 2008-04-09 |
Publications (1)
Publication Number | Publication Date |
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WO2009124808A1 true WO2009124808A1 (de) | 2009-10-15 |
Family
ID=40719632
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2009/052436 WO2009124808A1 (de) | 2008-04-09 | 2009-03-02 | Verfahren und vorrichtung zum betreiben einer brennkraftmaschine |
Country Status (4)
Country | Link |
---|---|
US (1) | US8387592B2 (de) |
KR (1) | KR101532536B1 (de) |
DE (1) | DE102008018013B3 (de) |
WO (1) | WO2009124808A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102009058780B3 (de) | 2009-12-18 | 2011-03-24 | Continental Automotive Gmbh | Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine |
DE102013220117B3 (de) * | 2013-10-04 | 2014-07-17 | Continental Automotive Gmbh | Vorrichtung zum Betreiben einer Brennkraftmaschine |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4219899A1 (de) * | 1991-06-28 | 1993-01-21 | Ford Werke Ag | Regelvorrichtung zum regeln des luft/brennstoff-gemisches bei einer brennkraftmaschine |
DE4306055A1 (en) * | 1992-02-29 | 1993-09-16 | Suzuki Motor Co | Air-fuel ratio regulator for IC engine - uses two feedback control signals derived from respective oximeter on either side of exhaust catalytic converter |
EP0694684A2 (de) * | 1994-07-19 | 1996-01-31 | MAGNETI MARELLI S.p.A. | Elektronisches Gaskonzentrationssteuerungssystem |
US5497618A (en) * | 1994-09-30 | 1996-03-12 | Ford Motor Company | Air/fuel control system with catalytic converter monitoring |
DE19856367C1 (de) * | 1998-12-07 | 2000-06-21 | Siemens Ag | Verfahren zur Reinigung des Abgases mit Lambda-Regelung |
DE60108810T2 (de) * | 2000-06-13 | 2006-01-12 | Magneti Marelli Powertrain S.P.A. | Verfahren zur Regelung des Luft-Kraftstoff-Verhältnis einer Brennkraftmaschine |
DE102005045888B3 (de) * | 2005-09-26 | 2006-09-14 | Siemens Ag | Vorrichtung zum Betreiben einer Brennkraftmaschine |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10117050C1 (de) * | 2001-04-05 | 2002-09-12 | Siemens Ag | Verfahren zum Reinigen des Abgases einer Brennkraftmaschine |
JP2005113729A (ja) * | 2003-10-06 | 2005-04-28 | Toyota Motor Corp | 内燃機関の空燃比制御装置 |
DE102004043529B3 (de) * | 2004-09-08 | 2005-09-01 | Siemens Ag | Verfahren zur Gemischregelung einer Otto-Mehrzylinder-Brennkraftmaschine mit zylinderbezogenen Einzelkatalysatoren und einem den Einzelkatalysatoren nachgeschalteten gemeinsamen Hauptkatalysator |
DE102005046953B3 (de) * | 2005-09-30 | 2007-04-26 | Siemens Ag | Verfahren und Vorrichtung zum Erkennen eines Verbrennungsaussetzers |
DE102009058780B3 (de) * | 2009-12-18 | 2011-03-24 | Continental Automotive Gmbh | Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine |
-
2008
- 2008-04-09 DE DE102008018013A patent/DE102008018013B3/de active Active
-
2009
- 2009-03-02 US US12/936,728 patent/US8387592B2/en active Active
- 2009-03-02 KR KR1020107025170A patent/KR101532536B1/ko active IP Right Grant
- 2009-03-02 WO PCT/EP2009/052436 patent/WO2009124808A1/de active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4219899A1 (de) * | 1991-06-28 | 1993-01-21 | Ford Werke Ag | Regelvorrichtung zum regeln des luft/brennstoff-gemisches bei einer brennkraftmaschine |
DE4306055A1 (en) * | 1992-02-29 | 1993-09-16 | Suzuki Motor Co | Air-fuel ratio regulator for IC engine - uses two feedback control signals derived from respective oximeter on either side of exhaust catalytic converter |
EP0694684A2 (de) * | 1994-07-19 | 1996-01-31 | MAGNETI MARELLI S.p.A. | Elektronisches Gaskonzentrationssteuerungssystem |
US5497618A (en) * | 1994-09-30 | 1996-03-12 | Ford Motor Company | Air/fuel control system with catalytic converter monitoring |
DE19856367C1 (de) * | 1998-12-07 | 2000-06-21 | Siemens Ag | Verfahren zur Reinigung des Abgases mit Lambda-Regelung |
DE60108810T2 (de) * | 2000-06-13 | 2006-01-12 | Magneti Marelli Powertrain S.P.A. | Verfahren zur Regelung des Luft-Kraftstoff-Verhältnis einer Brennkraftmaschine |
DE102005045888B3 (de) * | 2005-09-26 | 2006-09-14 | Siemens Ag | Vorrichtung zum Betreiben einer Brennkraftmaschine |
Also Published As
Publication number | Publication date |
---|---|
KR101532536B1 (ko) | 2015-06-30 |
KR20110009140A (ko) | 2011-01-27 |
DE102008018013B3 (de) | 2009-07-09 |
US20110041819A1 (en) | 2011-02-24 |
US8387592B2 (en) | 2013-03-05 |
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