EP3679237A1 - Verfahren zur überprüfung der funktion eines drucksensors im luft-ansaugtrakt oder abgas-auslasstrakt eines verbrennungsmotors im betrieb und motor-steuerungseinheit - Google Patents
Verfahren zur überprüfung der funktion eines drucksensors im luft-ansaugtrakt oder abgas-auslasstrakt eines verbrennungsmotors im betrieb und motor-steuerungseinheitInfo
- Publication number
- EP3679237A1 EP3679237A1 EP18768813.0A EP18768813A EP3679237A1 EP 3679237 A1 EP3679237 A1 EP 3679237A1 EP 18768813 A EP18768813 A EP 18768813A EP 3679237 A1 EP3679237 A1 EP 3679237A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- combustion engine
- internal combustion
- pressure sensor
- determined
- tract
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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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
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
-
- 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
- F02D41/009—Electrical control of supply of combustible mixture or its constituents using means for generating position or synchronisation signals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1448—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an exhaust gas pressure
-
- 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
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
-
- 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
- F02M35/10373—Sensors for intake systems
- F02M35/1038—Sensors for intake systems for temperature or pressure
-
- 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
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/28—Interface circuits
- F02D2041/286—Interface circuits comprising means for signal processing
- F02D2041/288—Interface circuits comprising means for signal processing for performing a transformation into the frequency domain, e.g. Fourier transformation
-
- 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
-
- 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
-
- 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
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0611—Fuel type, fuel composition or fuel quality
-
- 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
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0614—Actual fuel mass or fuel injection amount
Definitions
- the present invention relates to a method with which a respective pressure sensor which is arranged for measuring pressure in the air intake tract or in the exhaust gas outlet tract of an internal combustion engine can be checked for its faultless function, in particular with regard to its dynamic behavior, in order to ensure trouble-free and in particular to ensure lawful operation of the respective internal combustion engine over the entire operating period with respect to the emission of pollutants ⁇ . Furthermore, the present invention relates to a motor control unit which is adapted to carry out the inventions ⁇ inventive method.
- Reciprocating internal combustion engines which are shortened in the context of this description also referred to only as internal combustion engines, have one or more cylinders in each of which a reciprocating piston is arranged.
- FIG. 1 shows by way of example a cylinder of an optionally also multi-cylinder internal combustion engine with the most important functional units.
- the respective reciprocating piston 6 is arranged linearly movable in the respective cylinder 2 and closes with the cylinder 2 a combustion chamber 3 a.
- the respective reciprocating piston 6 is connected to a respective crank pin 8 via a so-called connecting rod 7
- crankshaft 9 is connected, wherein the crank pin 8 is arranged eccentrically to the crankshaft axis of rotation 9a.
- the stroke ⁇ piston 6 is driven linearly “downwards”.
- the translational Lifting movement of the reciprocating piston 6 is transmitted by means of connecting rod 7 and crank pin 8 to the crankshaft 9 and converted into a rotational movement of the crankshaft 9, which moves the reciprocating piston 6 after overcoming a bottom dead center in the cylinder 2 again in the opposite direction "up" to a top dead center.
- the combustion chamber 3 In order to enable continuous operation of the internal combustion engine 1, the combustion chamber 3 must first be filled with the fuel-air mixture during a so-called working cycle of a cylinder 2, the fuel-air mixture in the combustion chamber 3 compressed, then ignited and expanded to drive the piston 6 are burned and finally the remaining after combustion exhaust gas are expelled from the combustion chamber 3. Continuous repetition of this process results in a continuous operation of the internal combustion engine 1 with delivery of a work proportional to the combustion energy.
- Inlet camshaft 23 for actuating the intake valves 22 and an exhaust camshaft 33 for actuating the exhaust ⁇ valves 32.
- mechanical components for power transmission are present, which may also include a valve clearance compensation (eg tappets,
- the intake camshaft 23 and the exhaust camshaft 33 are driven by the internal combustion engine 1 itself.
- the intake camshaft 23 and the exhaust camshaft 33 are respectively controlled via suitable intake camshaft control adapters 24 and exhaust camshaft control adapters 34 such as gears, sprockets, or pulleys by means of a timing transmission 40 , which, for example, a gear transmission, a timing chain or a timing belt, in a predetermined position to each other and to the crankshaft 9 via a corresponding crankshaft control adapter 10, which is designed as a gear, sprocket or belt ⁇ wheel, coupled to the crankshaft 9.
- FIG. 1 shows by way of example the coupling between inlet camshaft 23 and exhaust camshaft 33 and the crankshaft 9 shown by means of pulleys and timing belt.
- the rotation angle of the crankshaft which has been covered by a working cycle, is referred to below as the working phase or simply phase.
- a covered within a working phase angle of rotation of the crankshaft is referred to as corresponding phase angle ⁇ .
- the respective current crankshaft phase ⁇ angle of the crankshaft 9 can be detected continuously by means of a connected to the crankshaft 9 or the crankshaft control adapter 10 position sensor 43 and an associated crankshaft position sensor 41.
- the position sensor can be designed, for example, as a toothed wheel with a plurality of teeth distributed equidistantly over the circumference, wherein the number of individual teeth determines the resolution of the crankshaft phase angle signal.
- the current phase angles of the intake camshaft 23 and the exhaust camshaft 33 may additionally be detected continuously by means of corresponding position sensors 43 and associated camshaft load sensors 42.
- ⁇ additional actuators within the mechanical coupling link between the crankshaft 9 and inlet ⁇ camshaft 23 and the exhaust camshaft 33 for example integrated into the intake camshaft adapter 24 and the Auslassnockenwellenadapter 34 having a desired controllable phase offset between the crankshaft 9 and intake camshaft 23 and exhaust camshaft 33.
- ⁇ phase adjuster in so-called variable valve trains.
- an electronic, programmable Mo ⁇ tor control unit 50 (CPU) is shown for control of the motor functions, with signal inputs 51 for receiving the various sensor signals and with signal and Leis ⁇ tung outputs 52 for driving respective actuators and actuators and is equipped with an electronic processing unit 53 and an associated electronic storage unit 54.
- Parameters for the combustion such as the supplied, possibly directly injected fuel quantity to vote on it.
- the so-called charge exchange ie the intake of fresh gas and the expulsion of the exhaust gas is largely dependent on the timing of the intake valves 22 and exhaust valves 32, ie the time course of the respective valve strokes with respect to the time course of the piston stroke and height and course the pressures in the air intake tract and in the exhaust gas outlet tract.
- the charge change in operation depends on the phase angles of the intake and exhaust valves in relation to the crankshaft phase angle and thus the Pha ⁇ senlage of the reciprocating piston in cooperation with the respective pressure curve in the air intake tract and in the exhaust gas outlet tract.
- Fuel injection quantities and possibly different compression ⁇ tion ratios can result from these errors significant negative effects in terms of emissions, consumption, performance, smoothness, etc. Possible causes of the deviations described may be, for example:
- air-intake system or simply “intake system”, “induction” or “intake tract” a Ver ⁇ brennungsmotors the expert sums it together all the components that are used for air supply to the respective combustion chambers of the cylinders and thus define the so-called air path , These may include, for example, an air filter, an intake manifold, intake manifold or manifold or short intake manifold, a throttle valve, and possibly a compressor and the intake port ⁇ in the cylinder or the inlet channel of the cylinder belong.
- exhaust gas exhaust tract or simply “exhaust tract”
- exhaust tract or “exhaust system”
- all components are summarized over which the exhaust flows and thus form the so-called exhaust path, such as: The exhaust port or the exhaust port of each cylinder, exhaust pipes, exhaust gas recirculation components, particulate filters, catalytic converters and silencers. _
- the phase and / or amplitude to be determined ⁇ least a selected frequency signal of the measured pressure oscillations with respect to the crankshaft phase angle signal using Discrete-Four- ier transformation from the pressure oscillation signal. Furthermore, based on the determined phase position and / or amplitude of at least one respective selected signal frequency, using current reference values or reference characteristic curves, the current values of said deviations are determined.
- the reference values or reference characteristic curves were previously determined on an ideal reference internal combustion engine of the same type and stored in corresponding characteristic diagrams or currently determined by means of a respective algebraic model function.
- document DE 10 2015 209 665 A1 discloses a method for identifying valve control times of an internal combustion engine.
- the phase angle of selected signal frequencies of the measured pressure oscillations are above ⁇ be credited determined.
- the valve control times of the relevant internal combustion engine are then determined using reference phase angles and associated reference valve control times of the same signal frequencies of the pressure oscillations of a reference internal combustion engine and / or a model function derived therefrom.
- phase positions of selected signal frequencies of the measured pressure oscillations in the inlet and / or outlet tract, with respect to the crankshaft phase angle signal are determined by means of discrete Fourier transformation.
- intake valve lift phase difference and exhaust valve lift phase difference lines of equal phase positions of the selected signal frequencies are determined and a common intersection of the determined lines determined by signal frequency-dependent phase shift.
- the intake valve lift phase difference and the exhaust valve lift phase difference are determined and the piston stroke phase difference is determined from the value of the phase shifts that have occurred.
- Documents DE 10 2015 226 138 B3 and DE 10 2015 226 461 A1 each disclose a method for determining the composition of the fuel used for operating an internal combustion engine. These methods are based on the measurement and analysis of the pressure oscillations in the intake tract of the respective internal combustion engine by means of discrete Fourier transformation. In this case, for example, in addition to the determined
- the present invention is therefore based on the object of providing a simple, cost-effective and reliable method by means of which a malfunction of a pressure sensor arranged in the air intake tract or exhaust gas outlet tract of a combustion engine, during operation, in particular with respect to its dynamic Behavior, reliable and timely can be determined.
- This object is achieved by a method for checking the function of a pressure sensor in the air intake tract or exhaust gas outlet tract of an internal combustion engine in operation according to the main claim.
- a pressure oscillation signal Discrete-Fourier transform
- a value of a specific operating mofetils of Burn ⁇ voltage motors is formation using, for several selected signal frequencies determined.
- values of Commission IIis ⁇ tikums are then determined from each other.
- deviation values are then used to evaluate the function of the respective pressure sensor, wherein the correct functioning of the pressure sensor is confirmed if none of the determined deviation values is exceeding a predetermined deviation threshold, and wherein diagnoses a malfunction of the pressure sensor when at least once exceeds at least one of the determined From ⁇ weichungsock a predetermined deviation threshold.
- this pressure sensor can be checked without additional sensors, purely on the basis of Druckschwin ⁇ supply signal of the pressure sensor to be checked even that function.
- the measurements and analyzes of the pressure oscillation signal which are executed repeatedly in operation anyway, can largely be resorted to, which ensures timely detection of a malfunction of the pressure sensor.
- DFT discrete Fourier transform
- FFT Fast Fourier Transformation
- Measurement of the respective sensor type set a deviation limit.
- This deviation limit is in the used through ⁇ out the method for comparison with the determined deviation values, the proper functioning of the pressure sensor is asserted when none of the difference values calculated will exceed the predetermined deviation threshold, and on the other hand diagnoses a malfunction of the pressure ⁇ sensors if at least once, so at least ⁇ reaches the predetermined deviation limit in a measuring passage, at least one of ermit- telten deviation values or at least the largest deviate ⁇ deviation value or more.
- a further embodiment of the method according to the invention makes use of the knowledge that malfunctions of a pressure sensor have a different effect both on the phase position and on the amplitude of the respective signal frequencies.
- This embodiment of the method is accordingly characterized ge ⁇ denotes that at the pressure oscillation signal, a crankshaft phase angle signal is determined simultaneously, and the phase position and / or the amplitude of the selected signal ⁇ frequencies of the measured pressure oscillations with respect to the crankshaft phase angle signal are determined and that based on the respectively determined phase position or amplitude or Phase position and amplitude of the respective signal frequency per value of a specific operating characteristic of the combus ⁇ tion motor is determined.
- crankshaft phase angle signal required for carrying out the method according to the invention can be determined by means of a toothed wheel connected to the crankshaft and a Hall sensor. Such a sensor arrangement is also already present in modern internal combustion engines for other purposes.
- the crankshaft phase angle signal generated thereby can be easily shared by the method according to the invention. This has the advantage that no additional sensor has to be arranged and thus no additional costs for carrying out the method according to the invention are caused.
- This embodiment is particularly advantageous if, in particular, the determination of the corresponding operating characteristic on the phase position or amplitude or phase position and amplitude of a respective signal frequency is determined.
- the particular operating characteristic of the internal combustion engine one or more of the following operating parameters: an intake valve lift phase position, an exhaust valve phasing, a piston stroke phase position, a fuel composition, a Be ⁇ commencement timing of the fuel injection, Injection amount of the fuel injection, a compression ratio of the cylinder, a trim of the intake tract and a valve ⁇ operation deviation value.
- a further deviation value can first be determined on the basis of another specific operating characteristic to confirm the first deviation value ,
- the selected signal frequencies correspond to the intake frequency as fundamental frequency or first harmonic and the further multiple, that is to say the second to nth of the so-called
- the intake frequency is again in clear connection with the speed of the internal combustion engine.
- the phase position referred to in this context as the phase angle and the amplitude of the selected signal frequencies with respect to the crankshaft phase angle can be determined.
- the method, as well as the individual methods for determining the aforementioned operating parameters, on an electronic programmable engine control unit (CPU) of the respective internal combustion engine are executed. This has the advantage that no separate control or computing device is required and the algorithms of the method in the corresponding processes of the engine control programs, and in particular ⁇ special in the algorithms for determining the operating parameters can be integrated.
- the motor control unit for controlling an internal combustion engine, has at least one electronic processing unit, at least one electronic storage unit, a plurality of signal inputs and a plurality of signal outputs.
- the electronic processing unit can also have a number of separate or combined computing units and memory units. In this case, in at least one of the electronic processing units and / or in the electronic memory unit , 0
- the engine control unit according to the invention is that the program code and calculation parameters for performing the method according to the invention can be embedded directly into the routines and program sequences for controlling the operation of the internal combustion engine and that also no separate control units are required.
- FIG. 1 a simplified schematic drawing to explain the
- FIG. 2 shows a simplified block diagram for illustrating an embodiment of the method according to the invention.
- FIG. 3 shows a further detail from the simplified block diagram according to FIG. 1 for a more detailed illustration of an embodiment of the method according to the invention.
- FIG. 1 shows a simplified block diagram in which the essential method steps in the individual blocks are summarized.
- Pressure vibration signal DS_S using Discrete Fourier transform DFT for several selected signal frequencies SF1, SF2 to SFX (also SF1 ... X) each have a value of the specific operating characteristics BChk_Wl, BChk_W2 to BChk_WX (also BChk_Wl ... X) of the internal combustion engine 1 determined.
- the individual determined values of the operating characteristic, BChk_Wl, BChk_W2 to BChk_WX are represented in FIG. 2 by the blocks B3.1, B3.2 to B3.X.
- One or more operating parameters which are determined on the basis of the same pressure oscillation signal DS_S can be used as a specific operating characteristic, according to one of the methods of the prior art mentioned in the introduction.
- an intake valve ⁇ stroke phase position, an exhaust valve lift phase position or a piston stroke phase position can be used as a specific operating characteristics, which can be determined for example with one of the disclosed in the prior art method.
- a fuel composition, a start time of the force ⁇ fuel injection, an injection quantity of fuel injection, a compression ratio of the cylinders, a trim of the inlet tract and valve train deviation value, determined according to the methods disclosed in the input patent documents mentioned, can be used as a specific operating characteristic.
- This may for example, by comparison, especially Diffe ⁇ ence education of any two determined values. It can For example, first the most distant values are determined and the difference between these two values is formed. Whereby a maximum deviation value is found. Or, all determined values of the operating characteristic BChk_Wl ... X are compared with all other values of the operating characteristic, resulting in several deviation values Aw_Wl, Aw_W2 to Aw_WY (also Aw_Wl ... Y), which in FIG. 1, B4.2bisB4.Y blocks is shown.
- a respective comparison of the determined deviation values Aw_Wl, Aw_W2 to Aw_WX with a predefined deviation limit value Aw_Gw takes place as to whether at least one of the determined deviation values Aw_Wl, Aw_W2 to Aw_WX reaches the deviation limit value Aw_Gw or exceeds Aw_Wl ... X> Aw_Gw. This is illustrated in block B5.
- the deviation limit Aw_Gw was to play determined in advance of the loading humor normal operation of the engine 1 at ⁇ empirically or by calculation and in which, in Figure 2 illustrated storage unit 54 of the electronic engine control unit 50 (CPU) deposited. On the same motor control unit 50, the inventive method can also be performed, which is stored there in the form of program code.
- FIG. 3 shows a further detail of the simplified block diagram according to FIG. 1 for a more detailed illustration of an embodiment of the method according to the invention.
- a crankshaft phase angle signal Kw_Pw is determined simultaneously with the pressure oscillation signal DS-S. This is done, for example, by means of a crankshaft position sensor 41 provided anyway on the internal combustion engine, as shown in FIG.
- the block B2 is further detailed in FIG. 3 in order to represent by the blocks B2.1, B2.2 to B2.X that for the selected signal frequencies SF1, SF2 to SFX (also SF1... X) of the measured pressure oscillation signal DS_S in each case the phase position Phil, Phl2 to PhlX (also Phll ... X) and / or the amplitude Ampi, Amp2 to AmpX (also Ampl ... X) of the selected signal frequencies SF1 ... X are determined with respect to the crankshaft phase angle signal Kw_Pw_S. Based on the respectively determined phase position Phll ... X or Amplitude Ampl ... X or phase position Phll ... X and Amplitude Ampl ... X, the respective value of a specific operating characteristic BChk_Wl ... X of the internal combustion engine 1 for the respective signal frequency SF1 ... X is determined.
- the invention relates to a method for checking the function of a pressure sensor in the air intake tract or exhaust outlet tract of a combustion ⁇ engine during operation and a motor control unit for performing the method and is based on that dynamic pressure oscillations of the intake air in the air -Ansaug Bread or the exhaust gas in the exhaust gas outlet tract of the relevant internal combustion engine in operation by means of the respective pressure sensor are measured, and based on the pressure oscillation signal obtained using discrete Fourier transform for a plurality of selected signal frequencies each have a value of a specific operating characteristic of the internal combustion engine and deviation values of the values determined for the different signal frequencies are determined from each other. Depending on whether deviation values determined fall below or exceed a predefined limit value, the proper functioning of the
- Pressure sensor confirmed or diagnosed a malfunction of the pressure sensor.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017215849.2A DE102017215849B4 (de) | 2017-09-08 | 2017-09-08 | Verfahren zur Überprüfung der Funktion eines Drucksensors im Luft-Ansaugtrakt oder Abgas-Auslasstrakt eines Verbrennungsmotors im Betrieb und Motor-Steuerungseinheit |
PCT/EP2018/073706 WO2019048416A1 (de) | 2017-09-08 | 2018-09-04 | Verfahren zur überprüfung der funktion eines drucksensors im luft-ansaugtrakt oder abgas-auslasstrakt eines verbrennungsmotors im betrieb und motor-steuerungseinheit |
Publications (2)
Publication Number | Publication Date |
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EP3679237A1 true EP3679237A1 (de) | 2020-07-15 |
EP3679237B1 EP3679237B1 (de) | 2021-05-19 |
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ID=63556293
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP18768813.0A Active EP3679237B1 (de) | 2017-09-08 | 2018-09-04 | Verfahren zur überprüfung der funktion eines drucksensors im luft-ansaugtrakt oder abgas-auslasstrakt eines verbrennungsmotors im betrieb und motor-steuerungseinheit |
Country Status (7)
Country | Link |
---|---|
US (1) | US11293368B2 (de) |
EP (1) | EP3679237B1 (de) |
JP (1) | JP2020532680A (de) |
KR (1) | KR102283112B1 (de) |
CN (1) | CN111133184B (de) |
DE (1) | DE102017215849B4 (de) |
WO (1) | WO2019048416A1 (de) |
Families Citing this family (4)
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DE102017209112B4 (de) * | 2017-05-31 | 2019-08-22 | Continental Automotive Gmbh | Verfahren zur Ermittlung des aktuellen Verdichtungsverhältnisses eines Verbrennungsmotors im Betrieb |
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DE102017209386B4 (de) | 2017-06-02 | 2024-05-08 | Vitesco Technologies GmbH | Verfahren zur Ermittlung der aktuellen Trimmung des Einlasstraktes eines Verbrennungsmotors im Betrieb |
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CN111133184B (zh) | 2022-08-30 |
DE102017215849A1 (de) | 2019-03-14 |
WO2019048416A1 (de) | 2019-03-14 |
DE102017215849B4 (de) | 2019-07-18 |
BR112020004203A2 (pt) | 2020-09-01 |
US20200200113A1 (en) | 2020-06-25 |
CN111133184A (zh) | 2020-05-08 |
KR20200047674A (ko) | 2020-05-07 |
KR102283112B1 (ko) | 2021-07-28 |
US11293368B2 (en) | 2022-04-05 |
EP3679237B1 (de) | 2021-05-19 |
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