CN103939186A - Method and apparatus for adjusting regeneration frequency of exhaust gas catalytic converter in vehicle - Google Patents
Method and apparatus for adjusting regeneration frequency of exhaust gas catalytic converter in vehicle Download PDFInfo
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- CN103939186A CN103939186A CN201310753481.9A CN201310753481A CN103939186A CN 103939186 A CN103939186 A CN 103939186A CN 201310753481 A CN201310753481 A CN 201310753481A CN 103939186 A CN103939186 A CN 103939186A
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- 230000008929 regeneration Effects 0.000 title claims abstract description 32
- 238000011069 regeneration method Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000003197 catalytic effect Effects 0.000 title abstract 4
- 239000000446 fuel Substances 0.000 claims abstract description 98
- 239000002828 fuel tank Substances 0.000 claims abstract description 15
- 239000007789 gas Substances 0.000 claims description 46
- 230000009466 transformation Effects 0.000 claims description 44
- 239000003054 catalyst Substances 0.000 claims description 28
- 239000002912 waste gas Substances 0.000 claims description 17
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 14
- 239000002360 explosive Substances 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 239000003546 flue gas Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 3
- 230000001143 conditioned effect Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims description 2
- 230000001172 regenerating effect Effects 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 11
- 229930195733 hydrocarbon Natural products 0.000 description 19
- 150000002430 hydrocarbons Chemical class 0.000 description 19
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 18
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 15
- 239000005864 Sulphur Substances 0.000 description 12
- 229910002091 carbon monoxide Inorganic materials 0.000 description 9
- 230000003647 oxidation Effects 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- 239000002283 diesel fuel Substances 0.000 description 5
- 239000013618 particulate matter Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- 229910021536 Zeolite Inorganic materials 0.000 description 4
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 239000010457 zeolite Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000002779 inactivation Effects 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 150000003464 sulfur compounds Chemical class 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 231100000572 poisoning Toxicity 0.000 description 2
- 230000000607 poisoning effect Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- BUACSMWVFUNQET-UHFFFAOYSA-H dialuminum;trisulfate;hydrate Chemical compound O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O BUACSMWVFUNQET-UHFFFAOYSA-H 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
A method for adjusting a regeneration frequency of an exhaust gas catalytic converter in a vehicle comprises the steps of detecting the fuel adding situation of a fuel tank; estimating the conversion efficiency of the catalytic converter of the fuel according to a preset vehicle travel distance and/or preset fuel amount consumed by the vehicle after the fuel adding situation is detected, the conversion efficiency being determined based on the temperature rise generated by the fuel injected into the exhaust gas; comparing the conversion efficiency with a preset efficiency; and adjusting the regeneration efficiency of the exhaust gas catalytic converter in the vehicle based on the comparison of the conversion efficiency of the injected fuel.
Description
Technical field
The present invention relates to the regeneration based on fuel quality of exhaust gas catalyzer.
Background technique
From the industrial revolution, because the consumption of fossil fuel increases fast, atmospheric pollution is in rising trend.Particularly automobile industry has become main users and the main manufacturer of air-polluting of fuel.In this question essence, be global substantially, because motor vehicle emission causes atmospheric layer, percent of greenhouse gases increases, thereby causes global warming.
The doping of vehicle fuel, for example gasoline and diesel oil causes effulent to increase and the follow-up harm to public health.In kerosene, high Sulpher content can make catalyst converter inactivation and reduce the transformation efficiency that it discharges pollutants to motor.
Emission standard is the requirement of the concrete restriction of the amount setting to being released to the pollutant in environment.Although many discharges focus on the pollutant of controlling vehicle (motor vehicle) and the generation of other dynamic vehicle, but also can specification from the toxic emission of industry, power station, mini-plant (as mowing machine and diesel generator).Common alternative policy to emission standard is technical standard.
Effulent performance standard is limit value, its set dissimilar emission control technique may higher than threshold value.And emission standard has been used to indicate common pollutant, as the restriction of nitrogen oxide (NOx), carbon monoxide (CO), hydro carbons (HC) and particulate matter (PM).
The various technology for the treatment of waste gas have been used observes strict emission standard.Waste gas comprises pollutant, as carbon monoxide (CO), hydro carbons (HC), various nitrogen oxide (NOx) and particulate matter (PM).Different technology is used to reduce different types of pollutant.Some technology wherein comprise: use filter to be used for catching particulate matter, oxidation catalyzer and be used for reducing carbon monoxide and hydro carbons, selective catalytic reduction (SCR) method for nitrogen oxides reduction etc.
Sulphur in fuel is to exhaust gas catalyzer, if DOC (diesel oil oxidation catalyst converter), DPF (diesel particulate filter), NSC (NOx storage catalyst converter) etc. are problems.It has reduced the efficiency of these catalyst converters, and the catalyst converter frequent regeneration of having to removes sulphur.Regeneration countermeasure is also hypothesis based on to Sulpher content in fuel and fixed.
Oil quality is existed to some regulations, such as: in India BS4 (Bharath4 level) fuel, the high-load of sulphur is 50ppm, and Sulpher content can be up to 350ppm in BS3 (Bharath3 level) fuel.
For this BS4 of India and BS3 fuel the country that deposits, determine that these regeneration are to being slightly difficult.Such as: if BS5 (Bharath5 level) vehicle (with DPF/DOC) uses BS3 fuel, have to so increase the regeneration frequency of sulphur.What can not indicate now control unit of engine (ECU) use is the fuel of what kind.In the time that Sulpher content in the fuel blend using is higher than expectation restriction, can not indicates ECU and change regeneration frequency equally.
Summary of the invention
The present invention has the following advantages described in independent claims.Apparatus and method of the present invention are being added the transformation efficiency that detects exhaust gas catalyzer after fuel, inform the regeneration frequency of the quality of driver institute fueling the adjusting of the quality based on fuel exhaust gas catalyzer.Because the quality of its based on fuel is set regeneration frequency, the sulphur in catalyzer is removed in due course, so vehicle meets emission standard by reduce discharge always.If fuel quality is better than previous fuel quality, that will additionally increase the Economy of fuel.
Brief description of the drawings
One exemplary embodiment of the present invention are at length open and shown in the drawings in specification.
Fig. 1 is block diagram of the present invention;
Fig. 2 shows exhaust gas catalyzer; And
Fig. 3 shows the transformation efficiency figure of DOC.
Embodiment
Fig. 1 shows the operation of the device 100 in vehicle (not demonstrating).Device 100 is electronic control unit or the engine management unit with microprocessor or microcontroller, on described microprocessor or microcontroller with standard peripherals and parts.Device 100 control explosive motors (IC motor) 60 with gas exhaust piping this explosive motor 60 in the operation of waste gas system 80.Device 100 comprises Detecting element 10, injection component 12, prediction element 15, estimates element 20, regulating element 25, temperature receiving element 30 and look-up table 50.Waste gas system 80 comprises exhaust gas catalyzer 70 and lays respectively at the first temperature transducer T1 and the second temperature transducer T2 of the upstream and downstream of catalyst converter 70.
The fuel that Detecting element 10 detects fuel tank adds.Injection component 12 sprays into fuel in IC motor by ejecting system 14, and the fuel also controlling in flue gas leading 62 by fuel injector I2 sprays.Temperature receiving element 30 receives the temperature in exhaust gas catalyzer 70 by the first and second temperature transducer T1 and T2.Estimation element 20 is estimated the transformation efficiency of exhaust gas catalyzer 70.Regulating element 25 regulates the regeneration frequency of exhaust gas catalyzer 70.Regeneration is a kind of idle process of cigarette that is used for removing on sulphide (SOx) and/or the DPF being accumulated on exhaust gas catalyzer.
As shown in Figure 1, sensor 30, be connected to device 100 by signalling channel 34 as fuel cap sensor.Sensor 30 is arranged on the instruction opening or closing that receives fuel tank 32 on the fuel cap 36 of fuel tank 32, thereby the fuel that detects vehicle fuel tank 32 adds situation.In another way, thus sensor 30 also can be used as weighing transducer check fuel tank 32 changes in weight detect vehicle fuel tank 32 fuel add situation.Equally likely, can determine that the fuel of fuel tank 32 adds situation by detect the mode of fuel level rising by fuel level sensor.But to those skilled in the art, the method that exists other detection motor vehicle fuel to add situation is apparent.
Look-up table 50 comprise exhaust gas catalyzer 70, the sulphur concentration to fuel, the distance of travelling or the relevant predetermined transformation efficiency of fuel quantity that consumes.For multiple sulphur concentration and multiple distance or the fuel quantity that consumes, the predetermined transformation efficiency value of multiple correspondences is stored in look-up table.Such as: the sulphur concentration at the added fuel in a certain area is 50ppm, and Sulpher content in the fuel of other area (city) can be 350ppm.If the Sulpher content in fuel is high, may damage exhaust gas catalyzer, because cigarette is idle/a large amount of formation of SOx, thereby advise with MANUFACTURER compared with, exhaust gas catalyzer 70 need to be regenerated continually with distance still less and/or the predetermined fuel quantity based on being consumed, or process earlier, maybe must take corrective action, to avoid any infringement waste gas system 80 to waste gas system 80.
Waste gas system 80 comprises exhaust gas catalyzer 70, such as DOC (diesel oil oxidation catalyst converter).Exhaust gas catalyzer 70 is placed in the gas exhaust piping of explosive motor of vehicle.The waste gas producing from explosive motor 60 is conducted through outlet pipe 62, to remove harmful gas by means of exhaust gas catalyzer 70.
As shown in Figure 2, exhaust gas catalyzer 70, such as diesel oil oxidation catalyst converter (DOC) comprises carrier 72, first portion 74 and second portion 76.First portion 74 is the carrier coatings that comprise hydro carbons catcher (HC trap), and is painted on carrier 72.β zeolite is used to HC catcher, to effectively absorb hydro carbons.Particularly this β zeolite has 12 ring structures, and silicon oxide sio
2with aluminium oxide Al
2o
3ratio be 24-38.In addition, the 30-50% that this β zeolite is the whole carrier coating in first portion 74.Under normal circumstances, the temperature of waste gas lower than or while equaling 250 DEG C, β zeolite absorbs HC, and discharge in exhaust gas temperature the HC absorbing during higher than 250 DEG C.Therefore, first portion 74 absorbs HC during less than or equal to predetermined temperature in exhaust gas temperature, and discharges HC during higher than predetermined temperature in exhaust gas temperature.
Second portion 76 comprises noble metal catalyst, such as platinum and/or palladium, and be painted in first portion 74.Contained HC and CO in second portion 76 oxidation gaseous effluents.In addition, second portion 76 is also oxidized the HC discharging from first portion 74.In this case, the temperature fast rise of DOC70.Therefore, HC and CO discharge have directly been reduced.
In following reaction, diesel oil oxidation catalyst converter (DOC) oxidizing hydrocarbons and carbon monoxide, form carbon dioxide and water:
2CO+O2→2CO2
[HC]+O2→CO2+H2O
Above-mentioned conversion is exothermic reaction, thus in catalyst converter release heat.
The another one effect of DOC70 is the absorption to sulfur compounds.In combustion process in motor, the sulphur in fuel is oxidized to SO
2and SO
3.As shown in Figure 2, these compounds are absorbed on precious metal position (second portion 76) under low temperature (probably lower than 300 DEG C) on catalyst converter surface, and reacted generation aluminum sulphate with aluminium oxide, thereby reduce the active surface of carrier coating and made catalyst converter inactivation.This has reduced the reducing capacity of catalyst converter 70 to HC and CO effulent, and therefore catalyst converter transformation efficiency has reduced.It is poisoning that this process is known as catalyst converter.The catalyst converter that caused by sulfur compounds is poisoning is reversible.Catalyst converter can carry out desulfurization regeneration to general 500 DEG C by the temperature of rising catalyst converter.
By inject fuel into the temperature that increases DOC70 in waste gas with injection component 12.The fuel spraying is oxidized and emits heat by DOC70, and the temperature fast rise of catalyst converter, and if temperature higher than approximately 500 degrees Celsius, the sulfur compounds that absorbed so will be released, as shown in Figure 2.If sulfur content in fuel is higher, catalyst converter inactivation will be accelerated, and therefore regeneration frequency needs to regulate.
The transformation efficiency of oxidation catalyzer is defined as:
The calorie value of the calorie value/prediction of transformation efficiency=record
Initial (time=0) that this integration is ejected into waste gas from fuel starts, until the end that fuel sprays (time=t).
Wherein:
Exhaust mass flow rates (Kg/h) in m-flue gas leading (62): exhaust mass flow rates is fuel and the air flow velocity of gas producing that burns in explosive motor.It mainly produces by the product of combustion process.
Cp-waste gas specific heat (KJ/Kg/K): the needed heat of 1Kg exhaust mass rising 1K temperature.
T
meas-the degree centigrade that recorded by the second temperature transducer T2 after catalyst converter.
T
ref-to being in the estimation temperature with degree Celsius estimation of the cated catalyst converter of not having of catalyst converter downstream position (the DOC structure that does not have platinum or palladium to apply).This refers in the case of there is no the estimation temperature the second portion 76 in Fig. 2.
T
exp-be positioned at the estimation temperature that the untapped DOC of T2 position records with degree centigrade.Untapped DOC be still untapped new life's or new DOC.
Heat by temperature receiving element 30 to measure by the temperature that the first and second temperature transducer T1 and T2 obtain.Temperature T 1 is used for regulating the upstream temperature of DOC70.
Fig. 3 is presented at the transformation efficiency (80,82,84,86 and 88) of DOC70 and the graph of a relation of temperature in the situation of different Sulpher content concentration.In Fig. 3, the supposition sulphur concentration of the existing fuel in fuel tank is 50ppm, and the DOC that situation is good for example has 90% maximum conversion efficiency 80 in the drawings.For the predetermined quantity of fuel that is stored in the intended distance being travelled by vehicle in look-up table 50 or consume, prediction element 15 predictions of device 100 are for the transformation efficiency threshold value 82 of this fuel.Described intended distance can be for example that 100KM and/or described consumed predetermined quantity of fuel can be 10 liters.If fuel tank has rejoined fresh fuel, install 100 prediction element 15 and predict the transformation efficiency threshold value 82 that will obtain for next intended distance or the predetermined quantity of fuel that consumed by motor.If the fuel rejoining has higher sulphur concentration, for example 350ppm, than the transformation efficiency threshold value 82 of expecting, the transformation efficiency of the transformation efficiency 84 recording is lower.Similarly, if fuel tank rejoins fuel again, experienced that short distance is travelled or the predetermined quantity of fuel of next consumption after, if the transformation efficiency threshold value of the fuel prediction that is 350ppm for sulphur concentration represents with reference character 88, the transformation efficiency of measuring represents with reference character 86, and the transformation efficiency of exhaust gas catalyzer becomes better rejoining after fuel so.This shows that fuel quality is better than previous fuel.Predict that thus element 15 is the quality that driver indicates fuel according to the transformation efficiency of exhaust gas catalyzer 70.If the transformation efficiency of catalyst converter reduces along with the reducing of transformation efficiency threshold values of prediction, the regeneration frequency of exhaust gas catalyzer will increase so.If the transformation efficiency of catalyst converter is along with the transformation efficiency threshold values of prediction increases, the regeneration frequency of exhaust gas catalyzer will reduce so.Prediction element is being stored multiple intended conversion efficiency values of corresponding multiple Sulpher content and multiple distance or predetermined fuel consumption consumption in look-up table.
According to the present invention, the fuel that device 100 detects vehicle fuel tank according to the data that receive from sensor 30 via signal path 34 by Detecting element 10 adds situation.Once vehicle is judged interpolation fuel, device 100 just starts basis based on temperature rise effect and the quality of definite transformation efficiency instruction fuel.Temperature rise is from a upper temperature rise effect, at Vehicle Driving Cycle intended distance or consumed predetermined quantity of fuel after, penetrate by carrying out post fuel injection by ejecting system 14, or flue gas leading 62 produces by directly fuel being sprayed into by fuel injector 12.Measure temperature rise by the temperature of monitoring within the predetermined time the waste gas that leaves exhaust gas catalyzer.Device 100 fuel based on spraying into and be stored in the transformation efficiency that relatively carrys out to determine exhaust gas catalyzer 70 of the transformation efficiency in look-up table 50, and set the regeneration frequency of exhaust gas catalyzer by regulating element 25 Trig control signals.Threshold value efficiency is by having how many transformation efficiencies to depart from or the fuel conversion efficiency of different and definite prediction.According to indicated fuel quality, regulating element 25 regulates the regeneration frequency of exhaust gas catalyzer 70.
The method of the regeneration frequency of the exhaust gas catalyzer in the gas exhaust piping of the explosive motor of adjusting vehicle comprises the steps.The first step, the fuel that detects fuel tank adds situation.Second step, detects after fuel interpolation situation, for predetermined Vehicle Driving Cycle distance or the predetermined fuel quantity consuming are estimated the transformation efficiency for the exhaust gas catalyzer of fresh fuel.Next step, compare the transformation efficiency of estimation and the intended conversion efficiency of predicting by prediction element; Final step, according to the regeneration frequency of compared transformation efficiency adjusting exhaust gas catalyzer.If the transformation efficiency of the fuel rejoining is different from the transformation efficiency threshold values of prediction, the regeneration frequency of exhaust gas catalyzer will be conditioned.
When fuel tank adds fuel again, the concentration that device 100 will calculate affix again, and the distance of especially travelling according to transformation efficiency and vehicle or the fuel quantity that consumes are determined the new value of regeneration frequency.Regeneration frequency can be arranged to: be every 1000 kilometers (KM) for the sulfur doping level of 50ppm, and be every 600 kilometers for the sulfur doping level of 350ppm.This is arranged in vehicle operating process and carries out, and indicates driver's time that next time, regeneration occurred.This instruction is delivered to garage by help driver vehicle and is changed filter or cleaning filter or regeneration filter.Device 100 also can give a warning to the quality of fuel.
Although the present invention is described by specific embodiment, for a person skilled in the art, many other changes and modifications and other purposes are also apparent.The transformation efficiency of for example DOC70 also can be by replacing temperature transducer or calculate by any other means with lambda sensor.
But it must be understood that, the example of the member of setting forth in detailed description and embodiment are only illustrative, and do not limit the scope of the invention.Many modification in embodiment and the different application of the inventive method all can be conceived to.Scope of the present invention is only limited to the scope of claim.
Claims (10)
1. for regulating the method for exhaust gas catalyzer (70) regeneration frequency of exhaust pipe of explosive motor for vehicle, said method comprising the steps of:
The fuel of-detection (10) fuel tank (32) adds;
-after detecting that described fuel adds, estimate the transformation efficiency of (20) the described catalyst converter (70) for described fuel, wherein, the described transformation efficiency of described exhaust gas catalyzer (70) is determined based on spray into the temperature rise that described fuel produces in waste gas;
-by described transformation efficiency and predetermined transformation efficiency comparison (20); With
-the transformation efficiency being compared based on sprayed into fuel regulates the regeneration frequency of the described exhaust gas catalyzer in (25) described vehicle.
2. method according to claim 1, is characterized in that, described temperature rise rear injection by fuel in waste gas produces.
3. method according to claim 1, is characterized in that, described temperature rise produces by injecting fuel directly in flue gas leading (62) in waste gas.
4. method according to claim 1, is characterized in that, described transformation efficiency is that the Sulpher content to being adsorbed on described catalyst converter is estimated.
5. method according to claim 1 and 2, is characterized in that, at least one in multiple Sulpher content and multiple distance and/or the pluralities of fuel amount that consumed by described motor, multiple described predetermined transformation efficiency value is stored in look-up table.
6. method according to claim 1, is characterized in that, in the time that the transformation efficiency threshold value of described transformation efficiency and prediction is different, the regeneration frequency of described exhaust gas catalyzer (70) is conditioned.
7. method according to claim 1, is characterized in that, leaves the temperature of the waste gas of described exhaust gas catalyzer (70) determine measured temperature rise by monitoring within the predetermined time (T2).
8. according to the method described in claim 1,2 or 3, it is characterized in that, described fuel is injected in flue gas leading consumed predetermined amount of fuel after intended distance or by described motor after.
9. the device for the exhaust gas catalyzer of the vehicle of regenerating (100), comprising:
Detecting element (10), it is used for detecting the fuel interpolation of described vehicle;
Injection component (12), it is used for, after described vehicle adds fuel, fuel is sprayed into flue gas leading;
Monitoring element (T2), it is used for monitoring the temperature rise effect of the fuel spraying into;
Estimate element (20), it estimates the regeneration frequency of described exhaust gas catalyzer for described temperature rise effect; With
Regulating element (25), it regulates the regeneration frequency of the described exhaust gas catalyzer (70) in described vehicle according to estimated transformation efficiency.
10. device according to claim 7 (100), it is characterized in that, described device (100) comprises look-up table (50), wherein, described look-up table comprises to the Sulpher content of described fuel with by the distance of described Vehicle Driving Cycle or the relevant predetermined efficiency of the fuel quantity of consumption.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN311/CHE/2013 | 2013-01-23 | ||
| IN311CH2013 | 2013-01-23 |
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| Publication Number | Publication Date |
|---|---|
| CN103939186A true CN103939186A (en) | 2014-07-23 |
| CN103939186B CN103939186B (en) | 2018-08-07 |
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| CN201310753481.9A Active CN103939186B (en) | 2013-01-23 | 2013-12-31 | Method and apparatus for the regeneration frequency for adjusting the exhaust gas catalyzer in vehicle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111770141A (en) * | 2020-06-12 | 2020-10-13 | 吉林大学 | Vehicle fuel sulfur content assessment method based on Internet of vehicles |
| CN112664302A (en) * | 2020-12-24 | 2021-04-16 | 潍柴动力股份有限公司 | Method for monitoring catalyst poisoning of diesel engine aftertreatment system |
| CN115075943A (en) * | 2021-03-15 | 2022-09-20 | 罗伯特·博世有限公司 | Early warning method for fuel quality of internal combustion engine, computer program product and controller |
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| JP2009013847A (en) * | 2007-07-03 | 2009-01-22 | Toyota Motor Corp | Exhaust fuel addition control device for internal combustion engine |
| FR2930967B1 (en) * | 2008-05-06 | 2010-04-30 | Renault Sas | SYSTEM AND METHOD FOR OPTIMIZING THE SULFUR PURGE TRIGGER AUTOMATE |
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| CN111770141A (en) * | 2020-06-12 | 2020-10-13 | 吉林大学 | Vehicle fuel sulfur content assessment method based on Internet of vehicles |
| CN112664302A (en) * | 2020-12-24 | 2021-04-16 | 潍柴动力股份有限公司 | Method for monitoring catalyst poisoning of diesel engine aftertreatment system |
| CN115075943A (en) * | 2021-03-15 | 2022-09-20 | 罗伯特·博世有限公司 | Early warning method for fuel quality of internal combustion engine, computer program product and controller |
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