TR201606809A2 - A VEHICLE STARTING METHOD - Google Patents

Abstract

A method of starting a motor vehicle is provided. The motor vehicle comprises an engine and an exhaust gas purifying device comprising a Passive NOx Adsorberin (PNA) in an exhaust line for configuring the engine to: capture nitrogen oxides from exhaust gases at a first temperature or below the first temperature and into exhaust gases at a second temperature or above a second temperature. release of nitrogen oxides; and oxidation of hydrocarbons and / or carbon monoxides by means of a catalyst. Method: to monitor an air-fuel equivalence ratio of the engine, to determine the aging parameter of the exhaust gas purifying device by integrating the air-fuel equivalence ratio of the engine, to determine whether the exhaust gas purifying device should be regenerated depending on the aging parameter and to determine whether the exhaust gas purifying device should be regenerated. includes.

Description

Unnecessary repetition of the text in the description. Certain features only apply to one or another aspect of the invention or are made to prevent it. are described accordingly. However, where it is technically possible, any The properties described according to the direction or construction of the invention, use it with its aspect or yapllândünasbîla [I understand that it can be Opening Shapes[description:l To better understand the present invention and how it is applied in the same way Reference will be made to the drawings included in the scope to show that it is applicable: Figure 1, thanks to a previously introduced engine system and exhaust gas EbrEtlHna system showing a schematic view of fuel with mortar and exhaust gases; Figure 2 shows an intermediary SIEna method according to the present invention; and Figure 3 is a tool according to the present invention. The sematics of a controller that is made for play is a view.

Distinguishing the Invention Referring to Figure 1, a vehicle (1), an engine (2), an air intake, (4), an exhaust gas recirculation (EGR) system (6) and an exhaust system (8). Engine (2), a diesel engine may contain, but apart from the present invention, any type of vehicle, such as a gasoline-powered engine It is equally envisaged that it can be applied to the engine. In addition or alternative Alternatively, the engine can be naturally aerated or a turbocharger/or a supercharger and/or may be provided by another form of advanced induction. vehicle, a may include an additional motor, such as an electric motor, and the motor (2) is a part of a hybrid propulsion system. may be part.

As shown in Figure 1, the engine (2) consists of an intake manifold (Za) and an exhaust manifold (2b). The intake manifold (Za) is connected to the engine through the intake manifold (Za). (2) can be supplied with the inlet air of the withdrawable inlet (4). Inlet air,__l motor (2) any electrical systems, such as electrical systems provided in the vehicle, which can be compared with the AuxiliaryHand to supply power to the system can be fed. approx. combustionElve inlet air water vapor carbon dioxide (COZ), carbon monoxide (CO), oxides of nitrogen (NOX) and other that can be discharged through the exhaust manifold (2b). produces gases.

As shown in Figure 1, the EGR system (6) is a high-balancing EGR system. contains. Additionally or alternatively, the EGR system (6), exhaust gasesIIEl, a turbocharger a low-header EGR, which is then circulated to expand over the turbine system may be included. Alternatively, the vehicle may include an EGR system. EGR system (6), allowing a portion of the exhaust gases to be recirculated back to the inlet of the engine (2). Oxygen-rich air & part of it with burning exhaust gases changing it proportionally reduces the contents of each cylinder available for combustion. This results in a lower peak cylinder stiffness with a lower EEallEle In this way, NOX formation is reduced. Thanks to the EGR system (6), the exhaust gases that are not recirculated into the exhaust system (8) can enter. As shown in Figure 1, the exhaust system (8), for example a Passive NOx Adsorber (PNA) (10) may contain one or more exhaust gas EbrIlElna devices. Exhaust system (8), It may include a separately selectable catalytic reduction (SCR) device IEL(12). Exhaust gasesIliilna Devices can be provided by attaching a single exhaust chute (14) above. SCR device(12), down- It can be actively controlled and a passive SCR device can be used as described. In addition or alternatively, the exhaust throttle system, diesel particulate filter (DPF), Lean NOX TrappedLNT), string oxidation catalyst (DOC) and/or any other exhaust gas It may contain a ilEna device. Again, additionally or alternatively, the exhaust system may include a combined ARIDNA device, such as a combined SCR/DPF device. exhaust gas ArlEtzllîilna systems can be supplied with any water in the exhaust system.

Vehicle (1) separate & exhaust gas sensors (16) and/or engine sensors (18) may contain. Sensors include one or more slîlaklllîl sensors and/or one or more may include lambda sensor. Lambda sensors, narrow band or broad band Eloxygen may include sensors. Additionally or alternatively, lambda sensors air-fuel that can measure the amount of oxygen available and/or burn inside the engine (2) It may include any other sensor capable of determining the ratio/or air-to-approximate equivalence ratio.

Engine sensors (18) may be provided downstream of the exhaust manifold (2b). In addition or alternatively, the exhaust circulating heat/e/e/e/ or lambda sensors (16), once the exhaust gas Exhaust gas II lalaklgm and/or It can be provided with a triplexa (14) or approx. that can be configured to measure the oxygen content.

Again, additionally or alternatively, exhaust lilac hand and/or lambda sensors (not shown), for example in the exhaust system between PNA (10) and SCR deviceEdlZ) can be provided at the point.

PNA (10), for example a platinum, palladium, osmium, iridium, ruthenium or rhodium with a coating layer which may contain a platinum group metal (PGM) catalyst such as a catalyst Build-in a honeycomb provided. PNA (10), eg exhaust gases E with a catalyst a leiakllgb -fglIa, PNA (10) The PGM catalyst in it shows that NOX compounds can be adsorbed from the exhaust gases and the PNA (10) may begin to catalyze a reaction in which it can be captured. Catalyst stop Slilakliglu PNA (10) is made to adsorb NOx like an LNT and other gas Effectively adsorb NOx from exhaust gases in low lebklEs from ArIlElna devices. it may be as low as possible. PNA (10) separated, SCR device II (12) down- to adsorb NOx at frequencies lower than it can be operated as described. can print. The PNA (10) reduces the stored NOx by reaching higher operating strengths. It can be made to release. Unlike an LNT, the PNA (10) is, for example, the rich combustion engine of the engine. how the engine works, which is clearly adjusted by the start of a mode It can be done to allow the storage of NOx to be released.

In addition to catalyzing the absorption of NOx into PNA (10), PGM in PNA CO and/or Other exhaust gases such as incombustible hydrocarbons (HC)II oxidation reactions: PGM can be catalyzed by the catalyst. These gases are PNA to form CO2 and water. may oxidize.

In the exhaust system shown in Figure 1, the SCR device (12) is equipped with, for example, an SCR. from the ratio system (not shown), NOX compounds present in the exhaust gases, gas to nitrogen through a chemical reduction process. and to be converted into water In the example shown in Figure 1 using a controlled injection of the reductant, urea, is injected into the exhaust system and undergoes thermal decomposition to produce ammonia and subjected to hydrolysis. The ammonia produced can act as a reducing agent with the SCR device.

Dosage of added urea: NOx from exhaust gases to affect efficiency can be controlled. Additionally or alternatively, another reductant, SCR-comparative ratio El applicable to the system. Again, additionally or alternatively, with reductant, SCR device (12) another exhaust gas purification device installed above, a regeneration process can be provided by

Exhaust system (8) and/or SCR device EdlZ before urea can be thermally decomposed and @Ilmiasneeded to a suitable security before the SCR device can work effectively. it could be. In this way, the PNA (10) can operate in lower lacquers than with SCR devices (12). But, SCR deviceEl(12), PNA(10), as described above, are preceded by the device. the NOx that MUST be captured will continue to operate at higher temperatures than when it started. it can continue. SCR device II (12) PNA (10) as shown in figure 1 exhaust system Thanks to the provision above, the exhaust system (8), both devices individually Etlan NOx can be effectively discharged with exhaust gases over a wider range than it can It can be played in this way.

As described above, pollutant types such as HC and/or CO are contained in PNA (10). may oxidize. The PGM catalyst acts as a catalyst in these oxidation reactions. can. During such reactions, the PGM catalyst itself can be oxidized. In addition, at higher lacquers, PGM catalyst, oxidizing species in the exhaust gases can be directly oxidized by the oxidation reaction, for example the PGM catalyst is a factor in the oxidation reaction can be a reactant. This effect is caused by larger oxidizing species in the engine exhaust gases. concentrations. WorklSt-[giia, may increase with more attenuational conditions, which can lead to PGM The oxidation of the catalyst, PNA`nIEI, effectively capture NOx in the exhaust gases. started[g]Elelakl[g]l:catalyst stopping lelakHglll increasing- and/or C0 and oxidation of other pollutant species such as HC. Catalyst standstill an increase in this may result in the obsolescence of the PNA(10).

Decrease the catalyst's stopping volatility, effectively increase the PNA (10) PNA can be regenerated. The engine (2) is a mode of rich combustion, the exhaust gasesEin Concentrations of reducing species such as HC and C0 may be imposed for increased IIB.

The oxidized PGM catalyst is reversible by reversing the PNA aging process and stopping the PGM catalyst. It can be reduced by reducing species by reducing sIGkHgil. PNA'nI callgina suakügilîl and thus operating the engine and/or the EGR system. Reduction of oxidized PGM catalyst, when wetness can be controlled for reduction the reaction is a higher reaction than the oxidation reaction of the PGM catalyst ratio. can progress.

To reduce the stall frequency of the PGM catalyst in the PNA, the engine For example, after a certain working time or distance has been covered, or after a certain After an amount of fuel burns in the engine (2), it can be applied periodically. Additional Alternatively or alternatively, the engine can be regenerated, for example, of a DPF of the exhaust system. or after a desulfurization action of an LNT of the exhaust system Consequences of certain actions known to have a detrimental effect on PNA performance It can be operated to regenerate the PNA. These actions result in a high lelaklllZl period, PGM In this way, PNA's can be caused by poor running of the engine (2), which can lead to oxidation of its catalyst. (10) may need aging. Additionally or alternatively, PNA'n|El (10) obsolescence can be tracked directly and regeneration of PNA is due to PNA|hand aging applicable.

With reference to Figure Z, a tool according to an example of the present invention. Çallgtlîllîhasucin A method (200) is shown. Method (200), such as the Iambda tester, It may include an initial stage (202) where the approximation is followed in proportion to its eligibility. In a second stage (204), air-approximate equivalence ratio. A function connected to it, for example a PNA (10) with an exhaust gas The aging device can be integrated over time to determine an aging parameter. In a third step (206), the exhaust gas irlEtllElna device EIEl is connected to the aging parameter. It can be determined whether it should be regenerated or not. In a fourth stage (208), the exhaust gas It can be regenerated with the arIlElna device.

In addition to monitoring the air burn rate in the first stage (202), the engine Exhaust gases can be followed by suklfgIll. If the exhaust gases are wet[g]|:in the first stage is followed, the exhaust gas airflow deviceII is used to determine an aging parameter. The function integrated in step (204) can additionally be connected to the exhaust gas emission.

Expanded above, with reference to Figure 1, the exhaust, for example PNA (10) gaseous ignoranceHand aging may correspond to the oxidation of an inert catalyst.

Exhaust gases II lilac [g] and/or exhaust gases disproportionately of the oxidation reaction of the catalyst It may depend on the concentration of oxidizing species in the gases. In the first stage (202) for example, by following the engine's air-to-equivalent ratio/e/or the exhaust gases-II engine lightnesslve/or Iambda sensors (18) and/or Iambda Using the sensors (16), the oxidation rate of the catalyst can be determined. For example, lelakllgIEl and/or air-to-approximate] equivalence ratioII, the oxidation rate of the catalyst and It can be used to calculate a parameter that is representative of the oxidation rateII. Alternative As a scan table, a value of oxidation rateElie can be expressed or representative parameter, lactosegb and/or air-to-air equivalence ratio. can be determined accordingly. From the ScanEiLable The calculated or determined value is the exhaust gasEarlEna device. according to the time to determine an oxidation of the catalyst that can provide the parameter can be integrated.

While the vehicle is operating, the oxidation rateII is calculated or determined by the rate integration can be applied continuously. Alternatively, the integration through consideration of the individual values recorded at specified intervals applicable. Again, alternatively, integration can only be done by sIEiakliE and/or air-fueled. equivalence ratio [applicable when within predetermined ranges.

To determine an aging parameter, the exhaust gas In addition or alternatively, the application of lilac[g]|hand and/or air-to-approximate hand ratio ratio, the duration of a run, the distance traveled and/or the fuel consumption of the engine can be tracked and For example, an alternative scan is based on the table with exhaust gases, equipment II aging It can be used to set or edit the parameter.

Whether to regenerate the exhaust gas bees in the third stage or not In order to determine the necessity of exhaust gasElarIEna deviceII, a catalyst must be stopped. lelakI[g]l:can be determined. For example, a second scanning table can be attributed and a stop gloss exhaust gaslrîna device can be determined according to the aging parameter. Don't stop slîlakliglubir classifiable with a threshold value and if it is equal to the specified stop limit value, or If greater than the threshold value, the exhaust gasesIdIElna deviceII regeneration requirement can be determined.

If the exhaust system (8) contains NOX compounds with exhaust gases such as SCR 12, If it is mixed with another controllable exhaust gasequipment to affect the ratio, The method allows for the elimination of any additional NOx that cannot be captured due to aging of the PNA (10). An additional article on controlling the other exhaust gainarIHna deviceII for ÇElartilüias may include phase.

Once the PNA (10) begins to release stored NOx as described above, once reached a high lelaklfg, other exhaust gasElarIEna deviceElayrlEla release It can be made to remove any NOx compound.

Vehicle hiîlandl'power, ideal engine playHand/e rich engine rungtnaslîlarasia tool The difference in fuel consumption and/or emissions is different from other points in the vehicle driving cycle. may be less. In the 208th stage, regeneration of the exhaust gas with the device, the vehicle it can be applied in this way in the case of its implementation.

During the regeneration of the exhaust gas-harvested device, the oxidized PGM the rate of reduction of the catalyst in the exhaust gasesII lilac[g]leei and/or in the exhaust gasesII can be linked to the concentrations of reducing species. Effect of regeneration time in catalyst In this way, the exhaust gas Elehklglian and/or aging parameter is determined similarly. somehow it can be determined from the measurements of the air-to-burn equivalence ratio. SlîlakllgE/e/or air-fuel] the equivalence ratio function or the scan table described before, as described above negative, which can be integrated for the determination of aging parameter Method (200), exhaust gas EhrIEU lElna deviceII regenerated on the aging parameter This may involve an additional step in which the effect of As described above, this exhaust gases from the engine during regeneration fuel] equivalence ratio and/or monitoring of a wetland function by time and/or can be achieved by integrating the air-to-approximate equivalence ratio. Additionally or alternatively, ScanningAliablo can be attributed and a reduction ratio of the catalyst can be determined from the DtaramalAliablo.

Iel yanllelîa'i with normal working conditions, aging during regeneration Updating the parameter ensures that the desired reduction in aging of the arlEhlElna deviceII To ensure that the length of a regeneration action is controlled and thus stopping sElakllgiia can allow the desired reduction. Follow-up of the regeneration effect It is possible to separate regeneration through many regeneration actions, apart from can provide. For example, it is more possible to operate the engine in rich combustion conditions. As in the case of fifty, it is used for stopping the regeneration it could be. In addition, regeneration is the most effective way to turn the engine, for example, in the way that the vehicle won[g]l:l Working with rich combustion conditions, the processes are more flammable. may be deliberately detached from regeneration actions.

Referring to Figure 3, according to an example of the present invention, a tool is played a controller 300 is shown. Controller 300, engine air-approximate equivalence ratio II and/or exhaust gases from the vehicle& engineII to be followed by a lilac[g]II The yapllândlîllân may include a first module (302). The controller 300 has an air-to-appliance ratioEE function and/or an aging device with an exhaust gaseous device such as the PNA (10) for integrating the exhaust gasesII lelakllglIlEl to determine the parameter The builtIllân may include a second module 304. Controller (300), without exhaust gas cihaleEl determines whether it needs to be regenerated depending on the aging parameter. It may contain a third module (306) for the determination of the yapllândlîllân. Controller (300), exhaust gasEl10 A fourth module (308) that can control the aracle to regenerate the arIlElna deviceII may contain.

As described above, the aging parameter of the exhaust gas ElarIlîrlna deviceII The second module (304) is a memory (304a) with which a lookup table is stored. may contain. Scanned Table, the oxidation rate of a catalyst in the weighing deviceII, such as With an arIlna device, a hand with a wear rate, exhaust SIElaklgll and/or engine air-burn[EIdenklik It may allow the determination of proportional values. ScanningEllablo separate exhaust gasElectricity values and/or engine experienced during a regeneration action It may contain negative values that are the aging ratio Egin, which can correspond to the air-to-approximate equivalence ratio.

Exhaust gaslîlarliîtllülna devicellel, whether the aging parameter is essentially regenerated The third module (306), a second scan wherein it is stored may contain an illuminant (306a). The second scanning table, the device II a allows the catalyst to be determined from a stop slump, aging parameter. can provide. The third module (306), whether to regenerate the device II using exhaust gases In order to determine the necessity of it, with a value of one value of the determined stop lilac gloss klýlaslamaslîidlüb mayllândillâb.

The invention is made by means of exemplification with reference to one or more structures. Although it is described, it is not qualified and alternative to the described structures. The scope of the invention as determined by the appended claims Separate rights will be appreciated by those skilled in the art in which it can be created.

Claims (1)

REQUESTS 1. A method of operating a motor vehicle, according to a first aspect of the present invention, comprising an engine and an exhaust gain range device in an exhaust line of the engine, comprising a Passive NOx Adsorber (PNA) made for the downside: a first lilaclitha or first lilaclitha Exhaust gases in a second lebkllK or on the second volatile by trapping nitrogen oxides in the exhaust gases. oxidation of vacuoles hydrocarbons and/or carbon monoxides of a catalyst with release of nitrogen oxides; the method includes: following an air-fuel-equivalent ratio Elm of the engine; determination of an aging parameter by means of integrating the air-fuel equivalence ratio of the engine over time; determining whether the device II should be regenerated or not, depending on the aging parameter; and regenerating the device II with exhaust gas. Method according to claim 1, comprising determining a lelakIIglll in exhaust gases II from the engine; where, the exhaust gasEbrlEtllElna deviceII aging parameter is determined by integrating a function of slöakl[g]l over time and air-fuel equivalence ratioEE. The method according to claim 1 or 2, which includes monitoring the operating time and/or the fuel consumption of the engine; where the exhaust gas treatment device II aging parameter is determined from the monitored working time and/or fuel consumption at least. The method according to any one of the preceding claims, further comprising: determining a stagnation lilac of the catalyst relative to the aging parameter. The method according to claim 4, wherein the exhaust gas GREASE ARIETLLElna deviceIIEl is determined whether it should be regenerated or not, by means of clipping it with a threshold value of stopping light. The method according to any of the preceding claims, wherein the exhaust gaselarIdluna cihaleEl, rich combustion conditions, is regenerated by the engine running. The method according to any one of the preceding claims, further comprising: determining an effect on the regeneration of the device by using the exhaust gas in the aging parameter. The method according to claim 7, in which an effect on the regeneration of the exhaust gases in the aging parameter is determined by the down-panel: monitoring the air-fuel ratio of the engine during the regeneration; integrating the air-approximate equivalence ratio of the engine according to the duration. The method according to claim 7, in which an effect on the regeneration of the exhaust gases in the aging parameter is determined by the down-panel: the exhaust gases from the engine IIEJ lacquerHgJII and the air-fuel ratio of the engine during regeneration; and integrating a function of heat and air-to-burn equivalent ratio over time. The method according to any one of the preceding claims, wherein the aging parameter relates to a predicted oxidation of the exhaust gas ElarIdlEilna device EllEl catalyst. method. Intermediate separable, Selectable Catalytic Reduction (SCR) device E. Method according to claim 12, from previous claims, wherein the method further includes: Configuring the reduction of released nitrogen oxides by PNA in the second waterfall or on the second radiant, with the SCR device. Method according to claim 12 or 13, where the method contains the following: Adjusting an amount of the reductant included in the SCR device according to the PNA'nI aging parameter Method according to claim 15, where the method contains the following: EGR according to the PNA'nI aging parameter Adjustment of an amount of exhaust gases circulated by the system.. Method according to claim 15 or 16, where the method includes the following separately: The method according to any of the preceding claims, wherein the regeneration of the exhaust gas breathing apparatus II is carried out during an instrumental uplifting action. A controller constructed to implement the method according to any one of the preceding claims. When implemented by a computing device, the computing device is a software allowing the method according to any one of claims 1 to 18 to be implemented. A motor vehicle comprising: an engine; on a second wet gas or on a second wet gas by capturing nitrogen oxides from the exhaust gases under a first wet or wet gas stream with a PNA built for oxidation of nitrogen oxides and/or a catalyst, including hydrocarbons and/or carbon monoxides; A controller made for applying the method according to any one of claims 1 to 18. As shown and discarded in Figure 2, here is a majorly open vehicle stealing method. A controller or motor vehicle, as shown in Figure 3 and jumping to the figures, which is greatly expunged here.