CN101210509A - Oxygen level method for regulating waste gas cleaning equipment - Google Patents
Oxygen level method for regulating waste gas cleaning equipment Download PDFInfo
- Publication number
- CN101210509A CN101210509A CNA2007101608442A CN200710160844A CN101210509A CN 101210509 A CN101210509 A CN 101210509A CN A2007101608442 A CNA2007101608442 A CN A2007101608442A CN 200710160844 A CN200710160844 A CN 200710160844A CN 101210509 A CN101210509 A CN 101210509A
- Authority
- CN
- China
- Prior art keywords
- waste gas
- oxygen
- exhaust gas
- cleaning equipment
- gas cleaning
- 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
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 239000001301 oxygen Substances 0.000 title claims abstract description 74
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 74
- 238000004140 cleaning Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000002912 waste gas Substances 0.000 title claims description 90
- 230000001105 regulatory effect Effects 0.000 title abstract description 8
- 239000007789 gas Substances 0.000 claims abstract description 57
- 239000000523 sample Substances 0.000 claims abstract description 56
- 238000002485 combustion reaction Methods 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 18
- 230000032683 aging Effects 0.000 claims description 11
- 230000003750 conditioning effect Effects 0.000 claims description 4
- 239000008141 laxative Substances 0.000 abstract 1
- 230000001543 purgative effect Effects 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000007599 discharging Methods 0.000 description 6
- 238000009825 accumulation Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- -1 this Chemical compound 0.000 description 1
Images
Classifications
-
- 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
- F01N11/007—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring oxygen or air concentration downstream of the exhaust apparatus
-
- 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
- F02D41/0295—Control according to the amount of oxygen that is stored on the exhaust gas treating 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
- F02D2200/08—Exhaust gas treatment apparatus parameters
- F02D2200/0814—Oxygen storage amount
-
- 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
- F02D2200/0816—Oxygen storage capacity
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
A method for regulating oxygen level of an internal combustion engine exhaust gas cleaning device, includes measuring exhaust gas composition in front of and behind an exhaust gas cleaning device in flow direction of exhaust gas using a first exhaust gas probe and a second exhaust gas probe separately. Determining oxygen entering into the exhaust gas cleaning device, and summing the oxygen to an oxygen amount. The composition in front of the device is modulated between upper and lower threshold values such that lean and fat adjustments of the composition are terminated, when the amount reaches the upper and lower values, respectively. By means of said mode, to avoid the lean exhaust gas or the fat exhaust gas to pass through the exhaust gas cleaning device during a plurality of running phases of the internal combustion engine, and to discharge purgative exhaust gas only. If the exhaust gas composition has deviation with expected exhaust gas composition, to measuring the deviation using a first Lambada probe, and to consider the deviation in the oxygen amount determined by output signal and air quality signal of the first Lambada probe.
Description
Technical field
The present invention relates to a kind of method of oxygen level of the waste gas cleaning equipment that is used to regulate internal-combustion engine, wherein, measuring waste gas by first exhaust gas analyzer probe along exhaust gas flow direction before waste gas cleaning equipment forms, and after waste gas cleaning equipment, measure waste gas and form by second exhaust gas analyzer probe, wherein, determine to enter into the oxygen inlet of waste gas cleaning equipment, and it is added to or integrates (integrieren) to amount of oxygen, and wherein the waste gas before regulating waste gas cleaning equipment between the limiting value of regulation is formed.
Background technique
For the operation of the locomotive with internal-combustion engine, the permission discharging that rules and regulations are formed carbon monoxide, hydrocarbon and nitrogen oxides limits.Therefore in order to observe these rules, in the exhaust line of internal-combustion engine, be provided with waste gas cleaning equipment.Waste gas cleaning equipment has at least one ternary catalyzing unit.This ternary catalyzing unit only has whole three kinds of transfer capabilities that composition is all enough for stoichiometrical fuel-air mixture (Lambda=1) in narrow scope.Therefore be provided with the Lambda probe in the front of ternary catalyzing unit, use the output signal of this probe, can monitor the composition of fuel-air mixture, and can revise where necessary.Second Lambda probe can be set after ternary catalyzing unit in addition.This probe is the deviation that is used to discern Lambda probe, for example because the aging drift that causes changes, so just can consider this deviation in engine controller.In addition, the 2nd Lambda probe is the oxygen level that is used to monitor ternary catalyzing unit.In this case, the 2nd Lambda probe can be discerned the oil-poor waste gas by catalyst converter in the oil-poor stage, and identifies the oxygen storage capacity that reaches catalyst converter thus.In this case, can regulate waste gas towards the direction of rich oil forms.Also can identify passing through of rich exhaust gas in the rich oil stage, can identify thus and use up the oxygen that has stored the front.In this case, can regulate waste gas towards oil-poor direction forms.Regulate the waste gas composition based on the output signal of the 2nd Lambda probe and also be called guide adjustment (Fuehrungsregelung).
So utilize the oxygen storage capacity of exhaust-gas cleaning, make to absorb oxygen, discharge oxygen again in the rich oil stage in the oil-poor stage.Reach thus to form and transform the oxidable harmful gas of waste gas.By the particularly mixed gas interference in unstable stage, the deviation with the Lambda theoretical value often appears on a Lambda probe.These deviations are regulated by engine controller, yet it has changed the oxygen level of catalyst converter.If these deviations to oxygen level are corrected, and need not regulate intervention based on the output signal of the 2nd Lambda probe, this is favourable to conversion efficiency of catalytic converter, therefore because have only when changing in the downstream of catalyst converter concentration of oxygen and the deviation of oxygen level is very big, just can carry out this adjusting intervention.In addition, when this large deviation, also can give off not enough purified waste gas.
The adjusting of known oxygen level has determined to enter into the oxygen inlet of catalyst converter and the oxygen discharge capacity of discharging from catalyst converter by the output signal and the exhaust mass stream of Lambda probe, and oxygen inlet and discharge capacity are integrated, so that with the oxygen level modelling.This modeled oxygen level is used as input parameter at the control loop that is used for oxygen level is adjusted to theoretical value.Yet this modeled oxygen level is not equivalent to actual oxygen level, because only stored the part relevant with running parameter internal-combustion engine the oxygen inlet in catalyst converter.
When realizing the adjusting of oxygen level, the adjusting of the output signal that is based on the 2nd Lambda probe of consideration gets involved.This adjusting of working as guide adjustment has changed the Lambda theoretical value of the signal that is used for Lambda probe.If guide adjustment is intervened, deviation has just been determined in the adjusting of oxygen level, and the intervention of guide adjustment is regulated relatively.Regulate for channeling conduct, use the complicated single output controller of many inputs.Therefore needn't use based on the guide adjustment of the output signal of the 2nd Lambda probe and based on the well-bedded structure of the inner control loop of the output signal of Lambda probe.
DE4024212 is open, the compositing area of fuel-air mixture that can reach the good conversion ability of waste gas cleaning equipment therein can be enlarged, and its measure is that the composition with fuel-air mixture is equipped with time fluctuation.In this regulation, the Lambda value is with 0.5 to 5Hz frequency, fluctuates around Lambda=1 with for example ± 5% amplitude.This can realize by following measure, loads external signal promptly for the theoretical value of Lambda signal, and the going up of for example Lambda=1.05 that perhaps ought reach regulation prescribed a time limit, and theoretical value is transformed into for example following theoretical value of Lambda=0.95.Regulation in DE 4024212, when the conversion performance of determining waste gas cleaning equipment reduces owing to wearing out, the amplitude that reduces to regulate fluctuation.
Summary of the invention
Task of the present invention provides a kind of device of regulating the oxygen level of waste gas cleaning equipment.This device has simple controller structure, and avoids inabundant purified waste gas to pass through.
This task is finished by following measure, promptly when amount of oxygen reaches predetermined higher extreme value, finish the oil-poor adjusting (Magerverstellung) that waste gas is formed, and when amount of oxygen reaches predetermined low extreme value, finish rich oil adjusting (Fettverstellung).By this mode of operation, can reach most of operation phase at internal-combustion engine, avoid rich exhaust gas or oil-poor waste gas by waste gas cleaning equipment, and the waste gas of an emission purification as much as possible.If the deviation of forming with desired waste gas, as particularly the unstable stage may occur, these deviations are determined by Lambda probe, and can and be paid attention in amount of oxygen thus in the output signal of being popped one's head in by a Lambda and determined oxygen inlet of air mass signal and discharge capacity.According to the prior art shown in the DE4024212, be so to carry out the Lambda modulation, promptly when reaching the Lambda value or reach the Lambda value, change.This way does not hinder the waste gas cleaning equipment oxygen of finding time fully, perhaps is full of oxygen fully, and causes discharging oil-poor waste gas or rich exhaust gas.In the method according to the invention, conversion waste gas is formed when reaching predetermined that enter or the amount of oxygen of discharging.Only in the operation phase, just must carry out guide adjustment based on the output signal of the 2nd Lambda probe in minority.
If determined from the oxygen discharge capacity of waste gas cleaning equipment discharge, if and will enter into the oxygen inlet of waste gas cleaning equipment and be added to or be incorporated into amount of oxygen from the oxygen discharge capacity that waste gas cleaning equipment is discharged, then can realize determining more exactly the oxygen level of waste gas cleaning equipment, and can reduce not fully purified waste gas discharging.
An embodiment of the invention regulation with simple especially controller structure, when oxygen inlet and discharge capacity are determined amount of oxygen, oxygen inlet and discharge capacity are reduced by the output signal of first exhaust gas analyzer probe, form to regulate with the output signal based on second exhaust gas analyzer probe and intervene.By this measure, can use based on the guide adjustment of the output signal of the 2nd Lambda probe and based on the inner control loop of the output signal of Lambda probe.So just needn't must use the complicated single output controller of many inputs for guide adjustment.
If select the low extreme value and the higher extreme value of amount of oxygen like this, make their difference less than the oxygen storage capacity of waste gas cleaning equipment, just adjust level in the time of then can realizing only acquiring a certain degree and disturb (Fuellstandstoerung).This has considered such experience, promptly can not be with the enough modelling exactly of the catalyzer level of reality by once integrating (Integral) under the situation of large disturbance.
Of the present invention preferred embodiment in, determine amount of oxygen low extreme value and higher extreme value according to the aging conditions of waste gas cleaning equipment and/or the Operational Limits of internal-combustion engine.Can reach by this measure and to avoid under most of operating conditionss insufficient purified waste gas to pass through, although the oxygen storage capacity of waste gas cleaning equipment depends on its aging conditions and the Operational Limits of internal-combustion engine.
By when oil-poor adjusting and/or rich oil are regulated, determining the Lambda value of waste gas, can consider the conversion performance of waste gas cleaning equipment best according to the Operational Limits aging and/or internal-combustion engine of waste gas cleaning equipment.
When the output signal of second exhaust gas analyzer probe was indicated oil-poor waste gas, oil-poor adjusting finished; When the output signal of second exhaust gas analyzer probe is indicated rich exhaust gas, rich oil is regulated and is finished, can avoid by these measures, when the oxygen storage is full of fully or continues to provide the waste gas that has just been purified harmful matter deficiently to waste gas cleaning equipment during emptying.This can reach and reduce discharging.
The improvement project regulation of this method, when the output signal of oil-poor conditioning period second exhaust gas analyzer probe is indicated oil-poor waste gas, and when the output signal of corresponding rich oil conditioning period second exhaust gas analyzer probe is indicated rich exhaust gas, reduce the higher extreme value and the low extreme value of amount of oxygen.In this case, be foundation with following situation, the amount of oxygen that promptly enters and discharge is too big for the storage capacity of waste gas cleaning equipment.By reducing limiting value, can reduce the not throughput of enough purified waste gas.
By the aging yardstick that higher extreme value and the difference between the low extreme value (Unterschied) with amount of oxygen are used as waste gas cleaning equipment, can be that waste gas cleaning equipment is determined aging indicator.
If endurance modulation specifications minimum period and/or minimum radius for the waste gas composition, then can realize the excitation pulse of Lambda modulation is used for On-Board Diagnostics (OBD) function (On-Board-Diagnosefunktion), wherein this can have nothing to do with the aging of waste gas cleaning equipment in a kind of make.Also can stipulate, only when carrying out On-Board Diagnostics (OBD), just stipulate endurance minimum period and/or the minimum radius of Lambda modulation.
Description of drawings
The present invention will be described in more detail by illustrated embodiment in the accompanying drawings below.This accompanying drawing is:
Fig. 1 can use the schematic representation of the technological accumulation and inheritance of the method for the invention.
Embodiment
Fig. 1 schematically illustrates a technological accumulation and inheritance schematic representation.In this technological accumulation and inheritance, can use the method that when waste gas cleaning equipment 16 moves, is used to control the waste gas composition according to of the present invention.By air transport device 11 air is input in the internal-combustion engine 10, wherein, available air quality meter 12 is determined the quality of air.This air-mass 12 can be configured to hot-film air-mass sensor.The waste gas of internal-combustion engine 10 is discharged by exhaust passage 15, wherein, is provided with waste gas cleaning equipment 16 along the flow direction of waste gas behind internal-combustion engine 10.In the outlet of this waste gas cleaning equipment, waste gas is discharged by gas exhaust piping 18.For internal-combustion engine 10 is controlled, be provided with engine controller 19.On the one hand this engine controller is transported to internal-combustion engine 10 by fuel metering device 13 with fuel, and the signal of air-mass 12 and the signal conveys that is arranged on the signal of first exhaust gas analyzer probe 14 in the exhaust passage 15 and is arranged on second exhaust gas analyzer probe 17 in the gas exhaust piping 18 are to engine controller on the other hand.First exhaust gas analyzer probe 14 is measured the Lambda actual value of the fuel-air mixture that is transported to internal-combustion engine 10; This probe can be configured to broadband Lambda probe (Breitband-Lambdasonde).The waste gas that second exhaust gas analyzer probe 17 is measured after the waste gas cleaning equipment 16 is formed.Second exhaust gas analyzer probe 17 can be configured to Lambda transition probe (Sprungsonde).The output signal of second exhaust gas analyzer probe 17 is used for being offset by the long-time adaptive probe that compensates first exhaust gas analyzer probe 14, and compensates the oxygen level of waste gas cleaning equipment 16 and the deviation of optimum value by the Lambda theoretical value on quick intervention first exhaust gas analyzer probe 14.
Also disclose more such mode of executions, promptly it only is provided with second exhaust gas analyzer probe 17 along exhaust gas flow direction behind waste gas cleaning equipment 16, and in these mode of executions, first exhaust gas analyzer probe 14 is not set before waste gas cleaning equipment 16.
Be disclosed in the Lambda value and be in the range of flue gas of 0.995 slight rich oil, waste gas cleaning equipment has best transfer capability.So be configured to the output voltage of second exhaust gas analyzer probe, 17 outputs 600 to 650mV of transition probe.If there is an aging waste gas cleaning equipment 16, then the best transition ability still is positioned at the rich exhaust gas zone, and with therefore also in the higher output voltage of second exhaust gas analyzer probe 17.Open in addition, the zone of the optimal conversion efficiency of waste gas cleaning equipment 16 can also enlarge, and the Lambda value that its measure is to use 5% amplitude for example to modulate waste gas wherein keeps mean value Lambda=1.
Claims (10)
1. be used to regulate the method for oxygen level of the waste gas cleaning equipment (16) of internal-combustion engine (10), wherein, measuring waste gas by first exhaust gas analyzer probe (14) along exhaust gas flow direction before at waste gas cleaning equipment (16) forms, measuring waste gas by second exhaust gas analyzer probe (17) afterwards at waste gas cleaning equipment (16) forms, wherein, determine to enter into the oxygen inlet of waste gas cleaning equipment (16), and this inlet is added to or is incorporated into amount of oxygen, and wherein, modulating waste gas cleaning equipment (16) waste gas before between the limiting value of regulation forms, it is characterized in that, carry out waste gas cleaning equipment (16) modulation formed of waste gas before like this, make when amount of oxygen reaches predetermined higher extreme value, finish the oil-poor adjusting of waste gas composition, and when amount of oxygen reaches predetermined low extreme value, finish rich oil and regulate.
2. in accordance with the method for claim 1, it is characterized in that, determine the oxygen discharge capacity of coming out from waste gas cleaning equipment (16); To enter into the oxygen inlet of waste gas cleaning equipment (16) and be added to or be incorporated into amount of oxygen from the oxygen discharge capacity that waste gas cleaning equipment comes out.
3. according to claim 1 or 2 described methods, it is characterized in that, when oxygen inlet and discharge capacity are determined amount of oxygen, oxygen inlet and discharge capacity are reduced by the output signal of first exhaust gas analyzer probe (14), form to regulate with the output signal based on second exhaust gas analyzer probe (17) and intervene.
4. according to each described method in the claim 1 to 3, it is characterized in that, so select the low extreme value and the higher extreme value of amount of oxygen, make their difference less than the oxygen storage capacity of waste gas cleaning equipment (16).
5. according to each described method in the claim 1 to 4, it is characterized in that, determine the low extreme value and the higher extreme value of amount of oxygen according to the Operational Limits aging and/or internal-combustion engine (10) of waste gas cleaning equipment (16).
6. according to each described method in the claim 1 to 5, it is characterized in that the Lambda value of waste gas when determining oil-poor the adjusting and/or during the rich oil adjusting according to the Operational Limits of the aging and/or internal-combustion engine (10) of waste gas cleaning equipment (16).
7. according to each described method in the claim 1 to 6, it is characterized in that, when the output signal of second exhaust gas analyzer probe (17) is indicated oil-poor waste gas, finish oil-poor adjusting, and when the output signal of second exhaust gas analyzer probe (17) is indicated rich exhaust gas, finish rich oil and regulate.
8. according to each described method in the claim 1 to 7, it is characterized in that, when when the output signal of oil-poor conditioning period second exhaust gas analyzer probe (17) is indicated oil-poor waste gas, and when the output signal indication rich exhaust gas of rich oil conditioning period second exhaust gas analyzer probe (17) of correspondence, reduce the higher extreme value and the low extreme value of amount of oxygen.
9. in accordance with the method for claim 8, it is characterized in that the higher extreme value of amount of oxygen and the difference between the low extreme value are as the aging yardstick of waste gas cleaning equipment (16).
10. according to each described method in the claim 1 to 9, it is characterized in that, be perdurabgility modulation specifications minimum period and/or the minimum radius of waste gas composition.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006061684.7 | 2006-12-28 | ||
| DE200610061684 DE102006061684A1 (en) | 2006-12-28 | 2006-12-28 | Oxygen level controlling method for internal combustion engine, involves modulating exhaust gas composition between threshold values such that lean and fat adjustments of composition are terminated, when amount reaches values, respectively |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101210509A true CN101210509A (en) | 2008-07-02 |
| CN101210509B CN101210509B (en) | 2012-01-18 |
Family
ID=39465688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101608442A Expired - Fee Related CN101210509B (en) | 2006-12-28 | 2007-12-27 | Oxygen level method for regulating waste gas cleaning equipment |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101210509B (en) |
| DE (1) | DE102006061684A1 (en) |
| FR (1) | FR2910935B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105899789A (en) * | 2014-01-10 | 2016-08-24 | 丰田自动车株式会社 | Control system of internal combustion engine |
| CN111379635A (en) * | 2018-12-27 | 2020-07-07 | 罗伯特·博世有限公司 | Method and control device for regulating the filling state of a catalyst reservoir when a sensor is not ready |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5464391B2 (en) * | 2011-01-18 | 2014-04-09 | トヨタ自動車株式会社 | Air-fuel ratio control device for internal combustion engine |
| DE102014200042A1 (en) | 2014-01-07 | 2015-07-09 | Robert Bosch Gmbh | Method and device for controlling a mixture composition with a lambda-jump probe |
| DE102016219689A1 (en) | 2016-10-11 | 2018-04-12 | Robert Bosch Gmbh | Method and control device for controlling an oxygen loading of a three-way catalytic converter |
| DE102019212899A1 (en) | 2019-08-28 | 2021-03-04 | Robert Bosch Gmbh | Method for detecting deactivation of an exhaust gas catalytic converter |
| DE102020208838A1 (en) | 2020-07-15 | 2022-01-20 | Robert Bosch Gesellschaft mit beschränkter Haftung | Method and computing unit for controlling an internal combustion engine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4024212C2 (en) | 1990-07-31 | 1999-09-02 | Bosch Gmbh Robert | Process for the constant lambda control of an internal combustion engine with a catalyst |
| US5842340A (en) * | 1997-02-26 | 1998-12-01 | Motorola Inc. | Method for controlling the level of oxygen stored by a catalyst within a catalytic converter |
| JP3572961B2 (en) * | 1998-10-16 | 2004-10-06 | 日産自動車株式会社 | Engine exhaust purification device |
| JP3528739B2 (en) * | 2000-02-16 | 2004-05-24 | 日産自動車株式会社 | Engine exhaust purification device |
| CN1283910C (en) * | 2000-02-25 | 2006-11-08 | 日产自动车株式会社 | Engine exhjaust purification device |
| DE10205817A1 (en) * | 2002-02-13 | 2003-08-14 | Bosch Gmbh Robert | Method and device for regulating the fuel / air ratio of a combustion process |
| US7793489B2 (en) * | 2005-06-03 | 2010-09-14 | Gm Global Technology Operations, Inc. | Fuel control for robust detection of catalytic converter oxygen storage capacity |
-
2006
- 2006-12-28 DE DE200610061684 patent/DE102006061684A1/en not_active Ceased
-
2007
- 2007-12-26 FR FR0760360A patent/FR2910935B1/en not_active Expired - Fee Related
- 2007-12-27 CN CN2007101608442A patent/CN101210509B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105899789A (en) * | 2014-01-10 | 2016-08-24 | 丰田自动车株式会社 | Control system of internal combustion engine |
| CN105899789B (en) * | 2014-01-10 | 2018-12-07 | 丰田自动车株式会社 | The control system of internal combustion engine |
| CN111379635A (en) * | 2018-12-27 | 2020-07-07 | 罗伯特·博世有限公司 | Method and control device for regulating the filling state of a catalyst reservoir when a sensor is not ready |
| CN111379635B (en) * | 2018-12-27 | 2024-05-28 | 罗伯特·博世有限公司 | Method and control device for adjusting the filling state of a catalytic converter memory when a sensor is not ready |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2910935B1 (en) | 2018-03-02 |
| DE102006061684A1 (en) | 2008-07-03 |
| FR2910935A1 (en) | 2008-07-04 |
| CN101210509B (en) | 2012-01-18 |
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