CN103939186B - Method and apparatus for the regeneration frequency for adjusting the exhaust gas catalyzer in vehicle - Google Patents
Method and apparatus for the regeneration frequency for adjusting the exhaust gas catalyzer in vehicle Download PDFInfo
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- CN103939186B CN103939186B CN201310753481.9A CN201310753481A CN103939186B CN 103939186 B CN103939186 B CN 103939186B CN 201310753481 A CN201310753481 A CN 201310753481A CN 103939186 B CN103939186 B CN 103939186B
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- 230000008929 regeneration Effects 0.000 title claims abstract description 27
- 238000011069 regeneration method Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000000446 fuel Substances 0.000 claims abstract description 95
- 230000009466 transformation Effects 0.000 claims abstract description 41
- 239000002828 fuel tank Substances 0.000 claims abstract description 15
- 238000002485 combustion reaction Methods 0.000 claims abstract description 12
- 230000001172 regenerating effect Effects 0.000 claims abstract 2
- 239000007789 gas Substances 0.000 claims description 59
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 26
- 229910052717 sulfur Inorganic materials 0.000 claims description 14
- 239000011593 sulfur Substances 0.000 claims description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 12
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 6
- 239000003546 flue gas Substances 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000001143 conditioned effect Effects 0.000 claims description 2
- 230000008450 motivation Effects 0.000 claims 1
- 239000003054 catalyst Substances 0.000 abstract description 30
- 239000000295 fuel oil Substances 0.000 abstract 1
- 229930195733 hydrocarbon Natural products 0.000 description 19
- 150000002430 hydrocarbons Chemical class 0.000 description 19
- 239000005864 Sulphur Substances 0.000 description 15
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 15
- 238000006243 chemical reaction Methods 0.000 description 10
- 230000003647 oxidation Effects 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 8
- 229910002091 carbon monoxide Inorganic materials 0.000 description 7
- 239000003344 environmental pollutant Substances 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 5
- 239000013618 particulate matter Substances 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 239000002912 waste gas Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- -1 sulphur compound Chemical class 0.000 description 3
- 239000010457 zeolite Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 229960004424 carbon dioxide Drugs 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 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
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 125000002619 bicyclic group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 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
- 239000002283 diesel fuel Substances 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 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
- 230000002779 inactivation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 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
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 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 of for the exhaust gas catalyzer in the gas exhaust piping of the internal combustion engine of regenerative vehicle, the described method comprises the following steps：The fuel for detecting fuel tank adds situation；After having detected the fuel addition situation, for scheduled vehicle operating range and/or the predetermined quantity of fuel consumed by vehicle, transformation efficiency of the estimation for the catalyst converter of the fuel oil, wherein, the transformation efficiency of the exhaust gas catalyzer is determined based on the temperature liter that the fuel generates is sprayed into the offgas；By the transformation efficiency compared with predetermined efficiency；With the regeneration frequency of the exhaust gas catalyzer in the vehicle is adjusted based on the comparison of the transformation efficiency of the fuel sprayed into.
Description
Technical field
The present invention relates to the regeneration based on fuel quality of exhaust gas catalyzer.
Background technology
Since the industrial revolution, since the dosage of fossil fuel quickly increases, air pollution is in rising trend.Especially
It is that automobile industry has become the main users of fuel and the major manufacturers of air pollution.It is substantially complete in this question essence
Ball, because motor vehicle emission leads to atmosphere, percent of greenhouse gases increases, so as to cause global warming.
The doping of vehicle fuel, such as gasoline and diesel oil causes emission to increase and subsequently to the harm of public health.Coal
High sulfur content can be such that catalyst converter inactivates and reduce its transformation efficiency to engine emission pollutant in oil.
Discharge standard is the requirement for the concrete restriction that pair amount for the pollutant that can be released in environment is set.Although many
Discharge focuses on the pollutant that control vehicle (motor vehicles) and other dynamic vehicles generate, but also can specification from work
The exhaust gas discharge of industry, power plant, mini-plant (such as grass trimmer and diesel-driven generator).Common replacement policy to discharge standard is
Technical standard.
Emission performance standard is limit value, and the threshold being higher than may be needed by setting different types of emission control technique
Value.And discharge standard has been used to indicate common pollutant, as nitrogen oxides (NOx), carbon monoxide (CO), hydro carbons (HC) and
The limitation of particulate matter (PM).
The various technologies for handling exhaust gas have been employed to abide by stringent discharge standard.Exhaust gas includes pollutant, such as
Carbon monoxide (CO), hydro carbons (HC), various nitrogen oxides (NOx) and particulate matter (PM).Different technologies be used to reduce different
The pollutant of type.Some of which technology includes：It is used for capturing particulate matter using filter, oxidation catalyzer is used for restoring one
Carbonoxide and hydro carbons, selective catalytic reduction (SCR) method are for nitrogen oxides reduction etc..
Sulphur in fuel is to exhaust gas catalyzer, such as DOC (diesel oxidation catalyst), DPF (diesel particulate filter), NSC
It is a problem for (NOx storage catalyst converter) etc..It reduces the efficiency of these catalyst converters, and catalyst converter must not be infrequently
It regenerates to remove sulphur.Regeneration countermeasure is also based on depending on the hypothesis to sulfur content in fuel.
To oil quality, there is some regulations, such as：The highest content of sulphur in India BS4 (4 grades of Bharath) fuel
It is 50ppm, and sulfur content may be up to 350ppm in BS3 (3 grades of Bharath) fuel.
For country India this BS4 and BS3 fuel and deposited, determine these regeneration to being slightly difficult.Such as：If
One BS5 (5 grades of Bharath) vehicle (with DPF/DOC) uses BS3 fuel, then the regeneration frequency for increasing sulphur of having to.
Can not indicate control unit of engine (ECU) now is what kind of fuel.Equally when in the fuel blend used
When sulfur content ratio is expected limitation higher, it is impossible to indicate ECU and change regeneration frequency.
Invention content
The present invention has the following advantages.Apparatus and method of the present invention detects the conversion of exhaust gas catalyzer after adding fuel
Efficiency, informs the quality of driver institute refuelling and the quality based on fuel adjusts the regeneration frequency of exhaust gas catalyzer.Due to it
Regeneration frequency is set according to the quality of fuel, the sulphur in catalyst is removed in due course, so vehicle lands vertically by one
Low emission meets discharge standard.If fuel quality is better than previous fuel quality, that will additionally increase fuel
Economy.
Description of the drawings
One exemplary embodiment of the present invention is disclosed in detail and is shown in the accompanying drawings in the description.
Fig. 1 is the block diagram of the present invention；
Fig. 2 shows exhaust gas catalyzers；And
Fig. 3 shows the transformation efficiency figure of DOC.
Specific implementation mode
Fig. 1 shows the operation of the device 100 in vehicle (not showing).Device 100 is with microprocessor or micro-
The electronic control unit or engine management unit of controller carry standard peripherals on the microprocessor or microcontroller
And component.Device 100 controls the exhaust gas in internal combustion engine (I/C engine) 60 and the internal combustion engine 60 gas exhaust piping
The operation of system 80.Device 100 includes detecting element 10, injection component 12, prediction element 15, estimation element 20, regulating element
25, temperature reception element 30 and look-up table 50.Waste gas system 80 includes exhaust gas catalyzer 70 and is located at the upper of catalyst converter 70
The the first temperature sensor T1 and second temperature sensor T2 of trip and downstream.
Detecting element 10 detects the fuel addition of fuel tank.Injection component 12 injects fuel into IC by spraying system 14
In engine, and the fuel injection in flue gas leading 62 is controlled also by fuel injector I2.Temperature reception element 30 is logical
Cross the temperature in the first and second temperature sensor T1 and T2 reception exhaust gas catalyzers 70.Estimate that element 20 estimates exhaust gas catalyzer
70 transformation efficiency.Regulating element 25 adjusts the regeneration frequency of exhaust gas catalyzer 70.Regeneration be it is a kind of be used for removing be accumulated in it is useless
The idle process of the cigarette on sulfide (SOx) and/or DPF on gas catalyst converter.
As shown in Figure 1, sensor 30, such as fuel cover sensor are connected to device 100 by signal path 34.Sensor 30
The instruction that the on or off of fuel tank 32 is received on the fuel cap 36 of fuel tank 32, to detect vehicle fuel tank 32
Fuel adds situation.In another way, sensor 30 is alternatively arranged as weight sensor to check the weight change of fuel tank 32
Fuel to detect vehicle fuel tank 32 adds situation.It is also possible that can be examined by using fuel level sensor
The mode that fuel level rises is surveyed to determine that the fuel of fuel tank 32 adds situation.But to those skilled in the art, it deposits
It is obvious in the method that other detection motor vehicle fuel adds situation.
Look-up table 50 include exhaust gas catalyzer 70, in fuel sulphur concentration, travelled at a distance from or the combustion that is consumed
The relevant scheduled transformation efficiency of doses.For a variety of sulphur concentrations and a variety of distances or the fuel quantity consumed, multiple correspondences
Scheduled transformation efficiency value be stored in look-up table.Such as：The sulphur concentration of fuel added by a certain area is 50ppm, and
Sulfur content in other area (city) fuel can be 350ppm.If the sulfur content in fuel is high, exhaust gas may be damaged
Catalyst converter because cigarette it is idle/a large amount of formation of SOx, thus compared with proposed by manufacturer, exhaust gas catalyzer 70 is needed with less
Distance and/or continually regenerated based on the scheduled fuel quantity consumed, or handle earlier, or correction must be taken to arrange
It applies, to avoid any damage waste gas system 80 to waste gas system 80.
Waste gas system 80 includes exhaust gas catalyzer 70, such as DOC (diesel oxidation catalyst).Exhaust gas catalyzer 70 is placed on vehicle
Internal combustion engine gas exhaust piping in.The exhaust gas generated from internal combustion engine 60 is conducted through exhaust pipe 62, to borrow
Help exhaust gas catalyzer 70 and removes harmful gas.
As shown in Fig. 2, exhaust gas catalyzer 70, such as diesel oxidation catalyst (DOC) include carrier 72,74 and of first part
Second part 76.First part 74 is the carrier coating for including hydro carbons trap (HC trap), and is painted on carrier 72.β boils
Stone is used for HC traps, to effectively absorb hydro carbons.Especially the β zeolites have ten bicyclic ring structures, and silicon oxide sio2
With aluminium oxide Al2O3Ratio be 24-38.In addition, the β zeolites are the 30-50% of the entire carrier coating in first part 74.It is logical
In the case of often, when the temperature of exhaust gas is below or equal to 250 DEG C, β Zeolite absorption HC, and when exhaust gas temperature is higher than 250 DEG C
The absorbed HC of release.Therefore, first part 74 absorbs HC when exhaust gas temperature is less than or equal to predetermined temperature, and in exhaust gas temperature
HC is discharged when degree is higher than predetermined temperature.
Second part 76 includes noble metal catalyst, such as platinum and/or palladium, and is painted in first part 74.Second
Divide HC and CO contained in 76 oxidation gaseous effluents.In addition, second part 76 also aoxidizes the HC discharged from first part 74.In this feelings
Under condition, temperature rapid increase by DOC 70.Therefore, HC and CO discharges are directly reduced.
In following reaction, diesel oxidation catalyst (DOC) oxidizing hydrocarbons and carbon monoxide form carbon dioxide and water：
2CO+O2→2CO2
[HC]+O2→CO2+H2O
Above-mentioned conversion is exothermic reaction, so discharging heat in catalyst converter.
Another effect of DOC 70 is the absorption to sulphur compound.In combustion process within the engine, in fuel
Sulphur be oxidized to SO2And SO3.As shown in Fig. 2, these compounds under low temperature (be approximately below 300 DEG C) on catalyst converter surface
It absorbs on noble metal position (second part 76), and aluminum sulfate is generated with oxidation reactive aluminum, to reduce the work of carrier coating
Property surface and catalyst converter is made to inactivate.It reduce catalyst converters 70 to the reducing power of HC and CO emissions, therefore catalyst converter turns
Changing efficiency reduces.The process is poisoned referred to as catalyst converter.The catalyst converter poisoning caused by sulphur compound is reversible.Catalyst converter
Can by increase catalyst converter temperature to general 500 DEG C come desulfurization regeneration.
Increase the temperature of DOC 70 in exhaust gas by being injected fuel into injection component 12.The fuel of injection is by DOC
70 aoxidize and release heat, and temperature rapid increase for catalyst converter, and if temperature is greater than about 500 degrees Celsius, are inhaled
The sulphur compound of receipts will be released, as shown in Figure 2.If sulfur content in fuel is higher, catalyst converter inactivation will be accelerated, therefore regenerate frequency
Rate needs to adjust.
The transformation efficiency of oxidation catalyzer is defined as：
The calorie value of the calorie value/prediction for transformation efficiency=measure
Starting (time=0) of the integral in from fuel injection to exhaust gas, until fuel injection end (time=
t)。
Wherein：
Exhaust mass flow rates (Kg/h) in m- flue gas leadings (62)：Exhaust mass flow rates are fuel and air in internal-combustion engine
Burn in machine generation gas flow velocity.It is mainly generated by the product of combustion process.
Cp- exhaust gas specific heat (KJ/Kg/K)：1Kg exhaust mass increases the required heat of 1K temperature.
TmeasThe Celsius temperature measured by the second temperature sensor T2 after catalyst converter.
TrefDo not have cated catalyst converter (the DOC structures coated without platinum or palladium) to be in catalyst converter downstream position
With degree Celsius estimation an estimation temperature.Estimation temperature in the case that this refers to second part 76 in no Fig. 2.
TexpIt is located at the estimation temperature that the not used DOC of the positions T2 is measured with Celsius temperature.Not used DOC is not yet
The newborn or new DOC used.
Heat is surveyed by temperature reception element 30 with the temperature that uses the first and second temperature sensor T1 and T2 to obtain
Amount.Temperature T1 is used for adjusting the upstream temperature of DOC 70.
Fig. 3 is shown in the transformation efficiency (80,82,84,86 and 88) of DOC 70 and temperature in the case of different sulfur content concentration
The relational graph of degree.In figure 3, in the case that the hypothesis sulphur concentration of the existing fuel in fuel tank is 50ppm, situation is good
DOC is in figure for example with 90% maximum conversion efficiency 80.For be stored in look-up table 50 travelled by vehicle it is pre-
For set a distance or the predetermined quantity of fuel consumed, the prediction prediction of element 15 of device 100 is used for the transformation efficiency of this fuel
Threshold value 82.The preset distance for example can be 100KM and/or the consumed predetermined quantity of fuel can be 10 liters.If
Fuel tank has rejoined fresh fuel, then the prediction element 15 of device 100 is next preset distance or is consumed by engine pre-
Determine the fuel quantity prediction transformation efficiency threshold value 82 to be obtained.If the fuel rejoined has higher sulphur concentration, such as
350ppm, compared to desired transformation efficiency threshold value 82, the transformation efficiency of the transformation efficiency 84 measured is lower.Similarly, if
Fuel tank rejoins fuel again, after experienced short distance traveling or the predetermined quantity of fuel of next consumption, if for sulphur
The transformation efficiency threshold value of the fuel prediction of a concentration of 350ppm indicates that the transformation efficiency of measurement is with reference numeral with reference numeral 88
86 indicate, then the transformation efficiency of exhaust gas catalyzer becomes more preferable after rejoining fuel.This shows that fuel quality is better than it
Preceding fuel.Thus prediction element 15 is according to the quality that the transformation efficiency of exhaust gas catalyzer 70 is driver's instruction fuel.If
The transformation efficiency of catalyst converter reduces with the reduction of the transformation efficiency threshold values of prediction, then the regeneration frequency of exhaust gas catalyzer is just
Increase.If the transformation efficiency of catalyst converter increases with the transformation efficiency threshold values of prediction, the regeneration frequency of exhaust gas catalyzer
Rate will be reduced.Prediction element stores corresponding multiple sulfur contents and multiple distances or scheduled fuel consumption consumption in a lookup table
Multiple intended conversion efficiency values of amount.
According to the present invention, device 100 passes through detecting element according to the data received from sensor 30 via signal path 34
The fuel of 10 detection vehicle fuel tanks adds situation.Once vehicle is judged to add fuel, device 100 is begun to according to based on temperature
Rise effect and the quality of determining transformation efficiency instruction fuel.Wen Sheng is travelled in vehicle since upper one warm liter effect
Preset distance or after consuming predetermined quantity of fuel, by carrying out fuel post injection by spraying system 14, or by by combustion
Material ejector 12 directly injects fuel into flue gas leading 62 and generates.Exhaust gas catalyzer is left by monitoring within the predetermined time
The temperature of exhaust gas measure Wen Sheng.The ratio of fuel of the device 100 based on penetrating and the transformation efficiency being stored in look-up table 50
Relatively to determine the transformation efficiency of exhaust gas catalyzer 70, and exhaust gas catalyzer is set by 25 Trig control signal of regulating element
Regeneration frequency.Threshold efficiency is the fuel conversion efficiency of the prediction determined by deviateing by how many transformation efficiency or is different.Root
According to indicated fuel quality, regulating element 25 adjusts the regeneration frequency of exhaust gas catalyzer 70.
The method for adjusting the regeneration frequency of the exhaust gas catalyzer in the gas exhaust piping of the internal combustion engine of vehicle includes as follows
Step.The first step detects the fuel addition situation of fuel tank.Second step is scheduled vehicle row after detection fuel adds situation
Sail the transformation efficiency of distance or scheduled consumed fuel quantity estimation for the exhaust gas catalyzer of fresh fuel.In next step, estimating
The transformation efficiency of calculation is compared with the intended conversion efficiency by prediction element prediction；Final step turns according to what is compared
Change the regeneration frequency of efficiency-adjusted exhaust gas catalyzer.If the transformation efficiency of the fuel rejoined is different from the conversion effect of prediction
The regeneration frequency of rate threshold values, exhaust gas catalyzer will be conditioned.
When fuel tank adds fuel again, device 100 will calculate the concentration of additive again, and be imitated in particular according to conversion
Distance that rate and vehicle are travelled or the fuel quantity consumed determine the new value of regeneration frequency.Regeneration frequency can be set to：For
The sulfur doping level of 50ppm is every 1000 kilometers (KM), and is every 600 kilometers for the sulfur doping level of 350ppm.The setting
It is carried out in vehicle operation, and indicates that driver regenerates the time occurred next time.The instruction will help driver vehicle
It is sent to garage replacement filter and either clears up filter or regeneration filter.Device 100 also can send out police to the quality of fuel
It accuses.
Although the present invention is described by specific embodiment, for a person skilled in the art, perhaps
More other changes and modifications and other purposes are also obvious.Such as the transformation efficiency of DOC70 can also be by making
Temperature sensor is replaced with lambda sensor or is calculated by any other means.
But it is to be understood that the example of component and embodiment that are illustrated in being described in detail are merely illustrative, and
It does not limit the scope of the invention.The different application of many modifications and the method for the present invention in embodiment can be all conceived to.
The scope of the present invention is limited solely by the scope of the claims.
Claims (10)
1. the method for exhaust gas catalyzer (70) regeneration frequency in a kind of exhaust pipe of internal combustion engine for adjusting vehicle,
It the described method comprises the following steps：
Detect the fuel addition of fuel tank (32)；
After detecting the fuel addition, the transformation efficiency of the exhaust gas catalyzer (70) for the fuel is estimated,
Wherein, the transformation efficiency of the exhaust gas catalyzer (70) is risen based on temperature caused by the fuel is sprayed into the offgas come really
It is fixed；
The transformation efficiency is compared with predetermined efficiency；With
The exhaust gas catalyzer in the vehicle is adjusted based on the comparison of the transformation efficiency for sprayed into fuel
Regeneration frequency.
2. according to the method described in claim 1, it is characterized in that, the Wen Sheng is produced by the rear injection of fuel in the offgas
It is raw.
3. according to the method described in claim 1, it is characterized in that, the Wen Sheng is useless by injecting fuel directly into the offgas
It is generated in tracheae (62).
4. according to the method described in claim 1, it is characterized in that, the transformation efficiency is to being adsorbed on the exhaust gas catalyzer
On sulfur content estimation.
5. method according to claim 1 or 2, which is characterized in that with a variety of sulfur contents and by a variety of distances and/or by
The relevant a variety of predetermined efficiency of at least one of the group that the pluralities of fuel amount of the engine consumption is formed are stored in
In look-up table.
6. according to the method described in claim 1, it is characterized in that, when the transformation efficiency and when the predetermined efficiency difference,
The regeneration frequency of the exhaust gas catalyzer (70) is conditioned.
7. according to the method described in claim 1, it is characterized in that, leaving the exhaust gas by monitoring within the predetermined time and urging
Change the temperature of the exhaust gas of device (70) to determine measured Wen Sheng.
8. method according to claim 1,2 or 3, which is characterized in that the fuel is after preset distance or by the hair
Motivation is injected into after consuming scheduled amount of fuel in flue gas leading.
9. a kind of device (100) for the exhaust gas catalyzer in regenerative vehicle, including：
Detecting element (10) is used for detecting the fuel addition of the vehicle；
Injection component (12) is used for injecting fuel into flue gas leading after the vehicle adds fuel；
Monitoring element (T2) is used for monitoring the warm liter effect of sprayed into fuel；
Estimate element (20), the transformation efficiency of the exhaust gas catalyzer is estimated for temperature liter effect；With
Regulating element (25) adjusts the exhaust gas catalyzer (70) in the vehicle according to estimated transformation efficiency
Regeneration frequency.
10. device (100) according to claim 9, which is characterized in that described device (100) includes look-up table (50),
In, the look-up table include with the sulfur content of the fuel and at a distance from vehicle traveling or the fuel quantity of consumption is related
Predetermined efficiency.
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 CN103939186A (en) | 2014-07-23 |
| CN103939186B true CN103939186B (en) | 2018-08-07 |
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| CN111770141B (en) * | 2020-06-12 | 2021-09-10 | 吉林大学 | Vehicle fuel sulfur content assessment method based on Internet of vehicles |
| CN112664302B (en) * | 2020-12-24 | 2022-04-05 | 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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| JP4175281B2 (en) * | 2004-03-31 | 2008-11-05 | いすゞ自動車株式会社 | Exhaust gas purification system control method and exhaust gas purification system |
| JP5217102B2 (en) * | 2006-03-24 | 2013-06-19 | いすゞ自動車株式会社 | NOx purification system control method and NOx purification system |
| DE102006034805A1 (en) * | 2006-07-27 | 2008-01-31 | Robert Bosch Gmbh | Diesel particulate filter regenerating and nitrogen oxide storage catalyst desulphurizing method for internal combustion engine, involves triggering combined complete or partial regeneration of filter and desulphurization of catalyst |
| JP4175427B1 (en) * | 2007-05-16 | 2008-11-05 | いすゞ自動車株式会社 | NOx purification system control method and NOx purification system |
| JP4978344B2 (en) * | 2007-07-03 | 2012-07-18 | トヨタ自動車株式会社 | 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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2013
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