WO2006116787A2 - Verfahren zur erkennung von reaktiven gasanteilen im abgas einer brennkraftmaschine - Google Patents
Verfahren zur erkennung von reaktiven gasanteilen im abgas einer brennkraftmaschine Download PDFInfo
- Publication number
- WO2006116787A2 WO2006116787A2 PCT/AT2006/000181 AT2006000181W WO2006116787A2 WO 2006116787 A2 WO2006116787 A2 WO 2006116787A2 AT 2006000181 W AT2006000181 W AT 2006000181W WO 2006116787 A2 WO2006116787 A2 WO 2006116787A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- time
- temperature
- detecting
- exhaust gas
- internal combustion
- 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
- F02D41/22—Safety or indicating devices for abnormal conditions
-
- 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
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
- F02D35/027—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions using knock 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
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
- F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
-
- 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
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/04—Methods of control or diagnosing
- F01N2900/0422—Methods of control or diagnosing measuring the elapsed time
-
- 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
- F02D2200/08—Exhaust gas treatment apparatus parameters
- F02D2200/0802—Temperature of the exhaust gas treatment apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/1015—Engines misfires
-
- 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
- F02D41/1451—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the sensor being an optical sensor
-
- 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
- Y02T10/40—Engine management systems
Definitions
- the invention relates to a method for detecting reactive gas fractions in the exhaust gas of an internal combustion engine having a plurality of cylinders, comprising the following steps:
- the invention relates to a method and a device for measuring the rotational speed and / or the position of a rotating component, in particular a shaft, wherein a signal emitting transmitter is arranged on the component, the signal is received by a stationary receiver on the component.
- DE 102 60 294 A1 discloses an internal combustion engine which is equipped with an exhaust aftertreatment system and which has at least one precatalyst.
- rough-running values of the internal combustion engine which are proportional to the change in the angular velocity of the crankshaft of the internal combustion engine are determined for each cylinder.
- the rough-running values are compared with a threshold value and, depending on the result of the comparison, the internal combustion engine is assessed with regard to occurring misfires. shares, where additionally taken into account as a criterion for the assessment occurring during operation of the internal combustion engine temperature values of the precatalyst and the resulting due to the flowing exhaust gas exothermic energy conversion in the primary catalytic converter. It is merely stated that dropouts have occurred, a causal relationship with individual defined dropouts is not established. Conventional, slow temperature sensors, whose properties are not specified in more detail in DE 102 60 294 A1, suffice for easy exposure detection.
- DE 39 33 826 A1 describes an engine control device for internal combustion engines which has a misfire detection device which detects the number of non-igniting cylinders on the basis of the exhaust gas temperature of the engine. After the detection of misfires, it is determined in a test algorithm which cylinders do not ignite. At this time, a microcomputer temporarily turns off the fuel supply to each cylinder one by one, and monitors the output of the detector for changes. If the output signal of the misfire detection device does not change when the fuel supply to a cylinder is temporarily switched off, it is clear that the respective cylinder is misfiring, whereupon the microcomputer switches off the fuel supply to this misfiring cylinder.
- WO 2004/013474 Al discloses a method for adapting a motor control, wherein in a stationary and / or transient operation of an internal combustion engine determines a catalyst temperature and in the presence of increased thermal stress of the catalyst at least one applicative measure in the engine control is such that under similar Operation of the internal combustion engine, this increased thermal load is avoided. It is provided that the catalyst temperature is detected at a temperature jump in a range of 2OK to 150K at an output temperature in a range of 500 0 C to 95O 0 C with a high time resolution by means of an infrared camera. As a result, very rapid and very short-lasting temperature events, in particular temperature peaks in the catalyst can be detected.
- a suspension detection signal is formed based on a comparison between the time difference values for each cylinder and a predetermined value, which is retrieved to evaluate whether a misfire is present and fed to an evaluator which then misfires according to predetermined criteria recognizes and assigns to a specific cylinder.
- DE 39 17 978 A1 discloses a method and a device for measuring the uneven running of an internal combustion engine, in which time intervals for the combustion cycles of each cylinder of a multi-cylinder internal combustion engine are formed in accordance with the respective rotational angles of the crankshaft of the internal combustion engine. From these cylinder-related time periods, four specific predetermined cylinder groups of the internal combustion engine can be formed for the evaluation of the uneven running during the operation of the internal combustion engine. In this case, the maximum value and the minimum value of the rough-motion values, relative to the respective cylinder group, and a difference value between the maximum and minimum values are calculated, the combustion cycles of adjacent cylinders being evaluated.
- the evaluation of the cylinder-related periods of the respective combustion cycles for non-adjacent unequal cylinders of the internal combustion engine can be carried out, so that measured value distortions as a result of tolerances of the angular rotations of the crankshaft detecting measuring devices can be prevented.
- DE 42 28 677 C2 describes a device for determining the occurrence of a misfire in a crankshaft having multi-cylinder internal combustion engine, in which also from the rough running on misfiring is concluded.
- the difference in the angular speeds of the crankshaft between the cylinders is corrected by a correction device in the event of acceleration or deceleration.
- the detection of misfires solely due to deviations in the rotational irregularity is relatively erroneous.
- misfire detection devices which can detect misfires from the presence or absence of an ionic current in the region of the spark plug.
- this requires a relatively high sensory and diagnostic effort.
- JP 1-0115626 A a device for measuring the rotational speed of a rotating part is known, which has a rotationally fixed transmitter and a stationary receiver. After activating the transmitter sends this one high-frequency signal, which is received by the receiver. The received signal is converted into an electrical signal. From the time difference of two received signals, the rotational speed of the rotating component is calculated. A determination of the position of the rotating component is not possible or only with great inaccuracy.
- the object of the invention is to determine in the simplest possible way increased levels of reactive gases in the exhaust gas. Another object of the invention is to realize in the simplest possible way a speed and shaft position detection with the highest possible accuracy.
- this is achieved in that the time of occurrence of the temperature peak is assigned to a time of causation in the course of time of the characteristic engine parameter and that the time of causation of the temperature peak is assigned to at least one causing cylinder.
- the rotation uniformity of the internal combustion engine is determined to detect the time profile of the cyclically fluctuating characteristic engine operating parameter.
- a sound measurement preferably an ultrasonic measurement, to be carried out to record the time profile of the characteristic engine operating parameter.
- the sound measurement can be carried out in the exhaust line, preferably in the region of the exhaust gas aftertreatment device, or in the region of at least one housing of the internal combustion engine.
- an infrared measurement in the region of the exhaust gas aftertreatment device is carried out to detect the time profile of the temperature at the exhaust gas aftertreatment device.
- the infrared measurement can be performed by an infrared sensor in the region of the input or output side of the exhaust gas after-treatment device or be performed by an infrared camera.
- the execution of a measuring device with an infrared camera is known, for example, from WO 2004/013475 A1. It is essential that the means for infrared measurement has a continuously high time resolution.
- the time course of the temperature at the exhaust aftertreatment device is checked for occurrence of temperature peaks caused by reactive gases.
- a point of the time characteristic of the characteristic engine parameter can be assigned to a measured value of the temperature profile. If temperature peaks are detected, then the time of occurrence of the temperature peak can be set in correlation with a corresponding time of the time characteristic of the characteristic engine parameter and thus be very closely inferred to the corresponding causing cylinder.
- the magnitude of the phase shift results from the transit time of the exhaust gas between the cylinders and the exhaust aftertreatment device.
- the device for carrying out the method has at least a first means for detecting the time profile of at least one cyclically fluctuating characteristic motor parameter during at least a first time window, at least a second means for detecting the time course of the temperature or the heat radiation at least one, preferably by a catalyst Exhaust gas aftertreatment device within a second time window correlating with the first time window and an evaluation unit for comparing the time profiles of the characteristic engine parameter and the temperature or heat radiation at the exhaust gas aftertreatment device, and for assigning at least one temperature peak caused by misfires to a cylinder.
- the first means is preferably not intrusive type and may be formed by a rotational non-uniformity measuring device of the crankshaft.
- the rotation uniformity measurement can be carried out, for example, on the flywheel.
- the measurement of the cylinder pressure signals of the individual cylinders is possible.
- the second means is provided by a high-resolution temperature element arranged, for example, in the region of the input side of the exhaust gas aftertreatment device.
- Temperature sensor preferably an optical sensor integrally detecting the thermal radiation of the surface, particularly preferably an infrared-sensitive optical sensor formed. It is also possible to use an infrared camera instead of an optical sensor.
- the first and second means may be integrated within a combination sensor.
- a rotational speed and shaft position detection with high accuracy can be realized if at least two, preferably at least three spaced-apart stationary receiver are provided, wherein preferably the receivers have the same radial distance from the axis of rotation of the rotating component. It is particularly advantageous if the receivers are arranged at equal arc angles around the axis of rotation of the rotating component.
- the inventive method provides that the signal from at least two, preferably at least three fixed receiver is received with a time delay and that from the different maturities of the signals between the transmitter and the individual receivers, the position of the transmitter and / or the angle change of the transmitter per unit time is determined, wherein preferably the receivers are time synchronized before performing the measurement.
- Fig. 1 shows schematically an inventive device for detecting hydrocarbon fractions in the exhaust gas
- Fig. 2 shows the time course of the rotational nonuniformity and the temperature
- Fig. 3 shows a device according to the invention for measuring the rotational speed and / or the position of a rotating component.
- An internal combustion engine 10 with a plurality of cylinders 1, 2, 3, 4 has an exhaust line 5 with a catalytic converter 6. About a high-resolution speed sensor 7, the rotational irregularity of the crankshaft 8 is detected. On the input side 6a or the output side 6a 1 of the catalyst 6, the time profile of the temperature T of the catalyst 6 is determined via an infrared sensor 9, 9 '. The evaluation of the measured signals over the time profile of the rotational speed n and the temperature T takes place in an evaluation unit 11.
- Fig. 2 the time course of the rotational speed n (nonuniformity) and the time course of the temperature T of the catalyst 6 is plotted. Each point of the temperature curve correlates with a certain point of the irregularity course. Due to the inertia of the exhaust gas mass and the time-limited reaction rate in the catalytic converter 6, corresponding events of the temperature curve T and the rotational speed curve n are phase-shifted by a time difference ⁇ t.
- the method described makes it possible to carry out a reliable detection of misfiring with very little effort.
- a transmitter 102 is rotatably arranged, which emits a high-frequency signal with a constant frequency (Fig. 3).
- a plurality of receivers 104 are arranged around the component 101 .
- the receivers 104 have the same radial distance r from the axis of rotation 105 of the component 101 and are arranged around the rotation axis 105 in the same arc angles ⁇ , which in the exemplary embodiment amount to approximately 120 °.
- the receivers 104 are subjected to a basic calibration before the measurement and are time-synchronized.
- the transmitter 102 transmits a signal at a fixed frequency.
- the signal arrives at the receivers 104 with a time delay due to the different distances.
- the position of the transmitter 102 and thus the angular position of the rotating component 101, as well as the angle change per unit time, can be determined.
- the different transit times result from the changing distances of the rotating transmitter 102 to the receivers 104.
- the method can be used in a wide variety of components, such as shafts, wheels, rotors or the like.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112006000952T DE112006000952A5 (de) | 2005-05-03 | 2006-05-02 | Verfahren zur Erkennung von reaktiven Gasanteilen |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT7652005A AT501734B1 (de) | 2005-05-03 | 2005-05-03 | Verfahren und vorrichtung zur messung der drehzahl eines drehenden bauteils |
ATA765/2005 | 2005-05-03 | ||
AT9742005A AT502911B1 (de) | 2005-06-09 | 2005-06-09 | Verfahren zur erkennung von reaktiven gasanteilen |
ATA974/2005 | 2005-06-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2006116787A2 true WO2006116787A2 (de) | 2006-11-09 |
WO2006116787A3 WO2006116787A3 (de) | 2007-02-22 |
Family
ID=36764542
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AT2006/000181 WO2006116787A2 (de) | 2005-05-03 | 2006-05-02 | Verfahren zur erkennung von reaktiven gasanteilen im abgas einer brennkraftmaschine |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE112006000952A5 (de) |
WO (1) | WO2006116787A2 (de) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4040294A (en) * | 1975-10-03 | 1977-08-09 | Hitachi, Ltd. | Apparatus for detecting misfire in multicylinder internal combustion engine |
DE10230786A1 (de) * | 2002-07-09 | 2004-01-22 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Erkennen von Aussetzern in Brennkraftmaschinen |
WO2004013474A1 (de) * | 2002-07-31 | 2004-02-12 | Volkswagen Aktiengesellschaft | Verfahren zur applikativen anpassung einer motorsteuerung und nach dem verfahren erhaltene motorsteuerung |
DE10260294A1 (de) * | 2002-12-20 | 2004-07-22 | Siemens Ag | Verfahren zum Erkennen von Verbrennungsausetzem bei einer Brennkraftmaschine |
-
2006
- 2006-05-02 WO PCT/AT2006/000181 patent/WO2006116787A2/de active Application Filing
- 2006-05-02 DE DE112006000952T patent/DE112006000952A5/de not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4040294A (en) * | 1975-10-03 | 1977-08-09 | Hitachi, Ltd. | Apparatus for detecting misfire in multicylinder internal combustion engine |
DE10230786A1 (de) * | 2002-07-09 | 2004-01-22 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Erkennen von Aussetzern in Brennkraftmaschinen |
WO2004013474A1 (de) * | 2002-07-31 | 2004-02-12 | Volkswagen Aktiengesellschaft | Verfahren zur applikativen anpassung einer motorsteuerung und nach dem verfahren erhaltene motorsteuerung |
DE10260294A1 (de) * | 2002-12-20 | 2004-07-22 | Siemens Ag | Verfahren zum Erkennen von Verbrennungsausetzem bei einer Brennkraftmaschine |
Also Published As
Publication number | Publication date |
---|---|
WO2006116787A3 (de) | 2007-02-22 |
DE112006000952A5 (de) | 2008-02-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE4227104C2 (de) | Verfahren und System zum Aufspüren von Fehlzündungen einer Kolbenbrennkraftmaschine | |
DE2658614C2 (de) | Vorrichtung zum Abtasten von Fehlzündungen in Brennkraftmaschinen | |
US5237504A (en) | Method of and apparatus for detecting misfire | |
EP1525382B1 (de) | Regelung der betriebsweise einer brennkraftmaschine | |
JP3479090B2 (ja) | 多気筒エンジンの燃焼状態診断装置 | |
DE69423095T2 (de) | System zur bestimmung von fehlzündungen bei einer brennkraftmaschine | |
DE69410911T2 (de) | Vorrichtung und Verfahren zum Kompensieren von Torsionsstörungen bei Kurbelwellen | |
EP1652124A1 (de) | Fehlz ndungsdetektion in einem verbrennungsmotor | |
JPH0447258B2 (de) | ||
US6314802B1 (en) | Optimal engine speed compensation method used in misfire detection | |
WO2008064659A2 (de) | Verfahren und vorrichtung zur steuerung der betriebsweise einer brennkraftmaschine | |
WO1996030737A1 (en) | Misfire detection method and apparatus | |
WO1996003630A1 (en) | An acceleration based misfire detection system and method with improved signal fidelity | |
JPH09119338A (ja) | 燃焼ミスファイヤの検出方法 | |
JPH09126042A (ja) | 燃焼ミスファイヤを検出する方法 | |
DE69416265T2 (de) | Apparat und Verfahren zur Diagnose des Verbrennungszustands eines Mehrzylindermotors | |
WO2008095089A2 (en) | System and method for detecting engine misfires | |
EP0805963A1 (de) | Tendenzkorrektur von motorpositionsdaten für rotierende positionskodiereinrichtungen | |
EP0887634A2 (de) | Apparat und Verfahren zur Diagnose des Verbrennungszustandes in einer Brennkraftmaschine und Aufzeichnungsmedium dazu | |
AT502911B1 (de) | Verfahren zur erkennung von reaktiven gasanteilen | |
WO2006116787A2 (de) | Verfahren zur erkennung von reaktiven gasanteilen im abgas einer brennkraftmaschine | |
DE102009049544A1 (de) | Verfahren zum Erkennen von Zündaussetzern | |
Rath et al. | Analysis of autoregressive coefficients of knock sensor signals for misfire detection in internal combustion engines | |
US6305352B1 (en) | Method for detecting an abnormal disturbance of an internal combustion engine torque | |
DE19632903B4 (de) | Verbrennungsaussetzererkennungsverfahren |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1120060009524 Country of ref document: DE |
|
NENP | Non-entry into the national phase |
Ref country code: RU |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: RU |
|
REF | Corresponds to |
Ref document number: 112006000952 Country of ref document: DE Date of ref document: 20080214 Kind code of ref document: P |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 06721238 Country of ref document: EP Kind code of ref document: A2 |