CN102003295A - Method for managing exhaust gas probe and device for performing the method - Google Patents
Method for managing exhaust gas probe and device for performing the method Download PDFInfo
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- CN102003295A CN102003295A CN2010102714012A CN201010271401A CN102003295A CN 102003295 A CN102003295 A CN 102003295A CN 2010102714012 A CN2010102714012 A CN 2010102714012A CN 201010271401 A CN201010271401 A CN 201010271401A CN 102003295 A CN102003295 A CN 102003295A
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- 239000000523 sample Substances 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000002485 combustion reaction Methods 0.000 claims abstract description 64
- 239000007789 gas Substances 0.000 claims abstract description 62
- 239000001301 oxygen Substances 0.000 claims abstract description 31
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 31
- 238000005259 measurement Methods 0.000 claims abstract description 18
- 239000002912 waste gas Substances 0.000 claims description 46
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 27
- 238000010438 heat treatment Methods 0.000 claims description 17
- 230000033228 biological regulation Effects 0.000 claims description 16
- -1 oxonium ion Chemical class 0.000 claims description 12
- 239000000446 fuel Substances 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 6
- 238000012795 verification Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 15
- 239000003570 air Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 206010058490 Hyperoxia Diseases 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 230000000222 hyperoxic effect Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 231100000572 poisoning Toxicity 0.000 description 2
- 230000000607 poisoning effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000007954 hypoxia Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/417—Systems using cells, i.e. more than one cell and probes with solid electrolytes
- G01N27/419—Measuring voltages or currents with a combination of oxygen pumping cells and oxygen concentration cells
Abstract
The invention proposes a method for managing heated exhaust gas probe (14). The probe is arranged in an exhaust part (12) of an internal combustion engine (10). During the measurement operating process, pumping signals (SP,UP,IP) are supplied on pump electrodes (18,20) of a pump unit (16) of the exhaust gas probe (14), the oxygen ion transporation in the pump unit (16) is realized by the signals. The invention also proposes a device for performing the method, characterized in that: in the given operation preparation of the exhaust gas probe (14), the exhaust probe (14) is heated to a named temperature (te-soll) and during the operation of the internal combustion engine (10), if in no need for the measurement signal (UN) of the exhaust probe (14), at least the pumping signals (SP,UP,IP) are sometime cut off depending on the operation state (KI,Lim-%O2,n,L) of the internal combustion engine (10).
Description
Technical field
The present invention relates to a kind of method that is used to make the exhaust gas analyzer probe operation, this probe is arranged in the waste gas position of internal-combustion engine and relates to a kind of device that is used to implement the method.
Purport of the present invention also is a kind of computer program and a kind of computer program.
Background technique
A kind of wide band lambda probe has been described in DE199 41 051 A1, and it has a measuring chamber, and this measuring chamber is got in touch by diffusion barrier and waste gas.Put an internal pump electrode at the transducer room lining, it constitutes a pump unit with the electrolyte of an external pump electrode and a conduct oxygen ions between pump electrode.Oxonium ion is come out by electrolyte pumping in the measuring chamber or pump in the measuring chamber with this pump unit.Other in the pump unit have a measuring unit, and a kind of electrolyte of conduct oxygen ions has wherein equally also been arranged in this unit between internal pump electrode and one are with reference to gas electrode between internal pump electrode and one are with reference to gas electrode.Measuring unit is equivalent to this special unit of an energy, in this unit when thermodynamical equilibrium, at the internal pump electrode with the potential difference that forms between with reference to gas electrode, proportional at the logarithm of the ratio of partial pressure in the measuring chamber and the dividing potential drop of gas in the air reference that will test with the gas that will test.The purpose of measuring waste gas λ is: influence the oxygen partial pressure in the measuring chamber like this, thereby enable the value that Si Te-current potential remains on a regulation consistently, this value preferably is equivalent to λ=1.Circuit is arranged and is used to guarantee that the pump electric current can flow.The polarity and the numerical values recited of pump electric current depend on, can Si Te-current potential the exceeding or be lower than great value of regulation.The pump electric current that produces is the yardstick of waste gas λ.
Introducing a kind of method that is used to make a wide band lambda probe operation in the waste gas position that is arranged in internal-combustion engine in DE 10 2,004 061 355 A1, this probe not only contains a pump unit but also a measuring unit is arranged.A kind of line unit is regulated the pump electric current that flows through the pump unit like this, thereby produces a kind of energy Si Te-voltage of regulation in measuring unit.The pump electric current is a yardstick of air-fuel ratio in the waste gas.Reliable detection that can Si Te-voltage reaches by the following method: temporarily when measuring disconnect the pump electric current, thereby make measuring unit when disconnecting on the pump current loop stand under load not.The disconnection of pump electric current is just carried out in short-term, thereby has guaranteed the adjusting of pump electric current.
A kind of method that is used to make a wide band lambda probe operation in the waste gas position that is arranged in internal-combustion engine equally also has been described in DE 102 16 724 C1, in the method, on the pump unit of λ probe, be added with a pump voltage, this voltage is regulated according to the energy Si Te-voltage that occurs on measuring unit, and produces a positive or negative pump electric current in the pump unit according to the oxygen content in the waste gas.For also in the running of internal-combustion engine weak mixture, fill spray fashionable at a kind of fuel, the measurement sensitivity that keeps the wide band lambda probe, in the fuel fashionable pump voltage reverse of polarity that repeatedly makes that fills spray, thereby a pump voltage appears sometimes, this voltage pumps in the measuring unit oxonium ion, and it can make there owing to fuel fills spray into the oxidizing hydrocarbon that produces.
A kind of method that is used to make a wide band lambda probe operation in the waste gas position that is arranged in internal-combustion engine equally also has been described in DE 4,321 243 A1, and the pump electric current that flows through the pump unit in the method is defined in a kind of scope of periodic duty.As long as the energy Si Te-voltage that occurs on the measuring unit is less than threshold value, design makes pump voltage pump electric current disconnection in other words.Threshold value is stipulated like this, makes the disconnection of pump voltage occur under running state, and the temperature of wide band lambda probe also is lower than a nominal temperature under these states, the λ unripe operation of popping one's head in when this nominal temperature.
A kind of device that is used to make the operation of wide band lambda probe has been described in DE103 16 645 A1, and this equally also existing pump unit of device has a measuring unit again.Be provided with a stabilized power source, it provides the pump electric current, with this pump electric current load pump unit.Stabilized power source for example provides the pump electric current of two kinds of different sizes at least.A kind of have the connection stage of alternation and the cycling service of disconnected phase have been described in addition, have wherein depended on stipulating by Si Te-voltage of on measuring unit, occurring for the endurance of adjusting average pump electric current connection stage or disconnected phase.The disconnection of pump electric current according to principle, just occurs in the periodic duty scope when off state.Long disconnection does not describe to the pump electric current.
Wide band lambda probe in a kind of waste gas position that is arranged in internal-combustion engine equally also has been described in DE 101 63 912 A1, and this probe contains a pump unit and a measuring unit.According to a kind of embodiment's pump current cycle reverse of polarity.Polarity conversion should make the polarization in the ceramic body of λ probe reduce, and the influence of avoiding probe signal to be subjected to causing thus.According to another kind of embodiment, can design in the chien shih pump voltage disconnection of internal combustion engine operation rest periods.The probe heating equipment is worked on, perhaps make its disconnection in order to save the energy.As can also designing among described DE 4,321 243 A1 in front, cross in the temperature of λ probe and pump voltage to be disconnected when low.
Summary of the invention
Be used to make the exhaust gas analyzer probe operation of a heating in the waste gas position that is arranged in internal-combustion engine according to mode of the present invention, a pump signal is provided for the pump electrode of a pump unit of exhaust gas analyzer probe at the measurement run duration therein, this signal can be implemented in the oxonium ion transportation in the pump unit, it is characterized in that, when the given operation of exhaust gas analyzer probe is awaited orders, this moment, exhaust gas analyzer probe was heated to a nominal temperature, and when internal combustion engine operation, if do not need the measurement signal of exhaust gas analyzer probe, cut off the pump signal when having at least with regard to the running state that depends on internal-combustion engine so.
Avoid the high load of exhaust gas analyzer probe during the running state of internal-combustion engine regulation according to mode of the present invention, and therefore stoped the aging of exhaust gas analyzer probe.
The running state that can disconnect the pump signal at least sometimes of internal-combustion engine is such running state, and the measurement signal that is provided by exhaust gas analyzer probe can be provided under this running state for the moment.When the cancellation measurement signal, implement a kind of operation that control is arranged of internal-combustion engine, replace a kind of operation of being regulated.
As the special running state of internal-combustion engine, the pump signal should be disconnected under these running statees, especially can stipulate such running state, they or cause high oxygen concentration and/or cause pressure high in the exhaust steam passage.
Especially be designed to λ probe or NO as exhaust gas analyzer probe
X-probe.High oxygen content causes high pump signal in the waste gas position in such probe, and this signal causes the high capacity to the pump electrode of pump unit.High pressure in this external waste gas position causes the respective load to the pump electrode of pump unit.
The high capacity of the pump electrode of pump unit can make harmful substance enter easily in the pump unit, and these harmful substances may cause the poisoning of exhaust gas analyzer probe, until destruction.This negative effect is by avoiding largely according to mode of the present invention.
According to mode of the present invention thereby can expand life requirements to exhaust gas analyzer probe.
Favourable improvement design and the visible dependent claims of design proposal according to mode of the present invention.
First kind of design proposal regulation: the pump signal is disconnected when having at least, if the oxygen concentration in the waste gas position has surpassed an oxygen concentration threshold value.Hyperoxia concentration in the waste gas position is especially for a kind of λ probe or for a kind of NO
X-probe causes a kind of high pump signal, and this signal causes the high capacity to the pump electrode of pump unit, and this is avoided with favourable design proposal.Hyperoxia concentration in the waste gas position is understood that the running state of internal-combustion engine according to the present invention.
Another design proposal has been stipulated: the pump signal is disconnected when having at least, slides operation if internal-combustion engine is in when having disconnected the fuel input.This design proposal has with first kind of design proposal intersects, because when internal-combustion engine slides operation, occurs high oxygen concentration usually in the waste gas position, and it can reach 21% always, corresponding to the oxygen concentration in the surrounding atmosphere.To the consideration of sliding operation the pump signal was just disconnected before the hyperoxia concentration that reaches in the waste gas position.
Another kind of design proposal regulation: the pump signal is disconnected when having at least, if internal-combustion engine moves under a kind of stable running state.For the existence of verification steady operational status, preferably consider the rotating speed and the load of internal-combustion engine.
The improvement design code of this design proposal: before the pump signal was disconnected, must there be the minimum duration of operation of at least one regulation in steady state.
Another kind of design proposal regulation: the pump signal is disconnected when having at least, if the exhaust gas valve in waste gas position that is arranged in internal-combustion engine has cut out.Such exhaust gas valve especially designs in the waste gas position of commercial car, and it is closed the braking action that is used to strengthen motor.Elevated pressure may occur when exhaust gas valve cuts out in the waste gas position, this equally also may cause the high capacity of the pump electrode of pump unit.It equally also should be a kind of running state of internal-combustion engine that the position of exhaust gas valve is closed in other words according to the present invention.
At first relate to a kind of controller of setting up specially according to the device that is used to implement this method of the present invention, it includes the device of implementing this method.
Controller especially includes a kind of running state and tries to achieve the running state that device is used to try to achieve internal-combustion engine, and a kind of pump signal device specifies is used to exhaust gas analyzer probe that the pump signal is provided.
Controller preferably includes at least one electrical storage, wherein method step is stored as the controller program.
According to computer program dictates of the present invention: the institute according to method of the present invention all is implemented in steps, if it moves on a computer.
Have a kind of procedure code that is stored on the machine-readable carrier according to computer program of the present invention, it is implemented according to method of the present invention, if program is moved on computers.
One embodiment of the present of invention are shown in the accompanying drawing and are described in detail in the following description.
Description of drawings
Accompanying drawing has represented to carry out the technology surrounding environment according to the method for invention.
Embodiment
Accompanying drawing has been represented an internal-combustion engine 10, has put an exhaust gas analyzer probe 14 at its waste gas position 12 linings.Exhaust gas analyzer probe 14 includes a pump unit 16, has arranged pump electrode 18,20 on this pump unit, and one of them pump electrode 18 is subjected to the effect of waste gas.Abgassensor 14 includes a measuring unit 22 in addition, has arranged potential electrode 24,26 on this unit.
Be provided with a measuring chamber 28 between pump unit 16 and measuring unit 22, it links to each other with waste gas by an air intake passage 30, has wherein arranged a diffusion barrier 32 between air intake passage 30 and measuring chamber 28.An electrode 26 of measuring unit 22 is arranged in one with reference to 34 li of air passagewayss.Be provided with a heating element 36 and be used for heat exhaust gases probe 14.
12 li are provided with an exhaust gas valve 38 at the waste gas position, and it is adjusted drive unit 40 by a valve and handles, and the latter is triggered by a valve signal KI.
Abgassensor 14 provides measurement signal UN for controller 50.Controller 50 provides heating power HZ for heating element 36, and for the pump electrode 18,20 of pump unit 16 provides a pump signal SP, wherein this pump signal SP is pump voltage UP pump electric current I P in other words.
Measurement signal UN is offered a measurement signal evaluating device 52, provide an oxygen concentration-threshold value Lim%_O2 to this device in addition, and it provides an oxygen concentration-release signal FG%_O2, this signal offers a pump signal device specifies 54.
A temperature release signal FG_te who is provided by heating-device specifies 56 is provided pump signal device specifies 54 in addition, an exhaust gas valve release signal FG_KI, an internal-combustion engine slides operation (Schiebebetrieb)-release signal FG_SA and a stable operation-release signal FG_Sta, and provides pump signal SP as pump voltage UP pump electric current I P in other words.
Heating-device specifies 56 is according to a dew point-move down terminal TPE and according to the nominal temperature t e_Soll regulation heating power HZ of the heating element 36 of Abgassensor 14, and temperature release signal FG_te is provided.
Internal-combustion engine slides operation-release signal FG_SA and stable operation-release signal FG_Sta depends on the rotation speed n of internal-combustion engine 10, the load L of internal-combustion engine 10, the minimum ti_Min duration of operation, rotating speed interpretational criteria Lim_n and load evaluate criterion Lim_L try to achieve device 58 by a running state and provide.
Embodiment is from as the wide band lambda of exhaust gas analyzer probe 14 probe, as it for example in listed DE102 16 724 C1 of beginning or in DE199 41 051 A1 described in detail.Another exhaust gas analyzer probe 14 for example can be a NO
X-probe.Pop one's head in 14 for the wide band lambda in an embodiment, make every effort to adjust setting λ=1 28 li of measuring chambers.Consider the measurement signal UN that this occurs as the actual parameter of a regulating loop between potential electrode 24,26, this signal is can nernst voltage UN in this embodiment.Precondition is: 28 li of measuring chambers a kind of stoichiometrical mixture is arranged, and 34 li of reference air passagewayss ambient air is arranged, can reach about 450mV by nernst voltage UN.
Stoichiometrical mixture oxygen concentration devious that a kind of and measuring chamber are 28 li is by adding pump signal SP and a kind of so and possible 16 li the transportation of oxonium ion overcomes in the pump unit on pump electrode 18,20.Oxonium ion transportation from measuring chamber 28 to waste gas takes place when oxygen is unnecessary, and 28 oxonium ion transportation then takes place when oxygen lacks from waste gas to measuring chamber.The oxonium ion transportation is undertaken by add pump signal SP on pump electrode 18,20, and wherein pump signal SP can predesignate the pump voltage UP into driving, and this voltage produces a pump electric current I P.Similarly can stipulate a pump electric current I P, thereby set up a pump voltage UP.Two parameters can be distinguished and limited in both cases, so that the especially load of restrictive pump unit 16.Two parameter UP, IP can be called pump signal SP.
Pump electric current I P just is defined as when 28 li oxygen of measuring chamber are unnecessary, then correspondingly is defined as negative when 28 li hypoxia of measuring chamber.Having occurred zero of pump electric current I P when the stoichiometry of 28 li of measuring chambers passes through.
In order to make exhaust gas analyzer probe 14 operation also be provided with heating device specifies 56, it depends on dew point-move down terminal TPE and depend on that the nominal temperature t e_Soll of the regulation of Abgassensor 14 provides heating power HZ for heating element 36.Just work as dew point and move down 12 li past tenses at the waste gas position, just preferred heat exhaust gases probe 14, therefore set out thus: 12 li no longer moisture or water droplet can occur at the waste gas position, and they may can damage the ceramic component of exhaust gas analyzer probe 12 under certain condition.The terminal that possible dew point moves down is by dew point-move down terminal TPE to provide signal.Heating power HZ is provided for all the time heating element 36 at exhaust gas analyzer probe 14 run durations, thereby any moment is all carried out the operation preparation.Name temperature t e_Soll stipulates like this, makes pump unit 16 conduct oxygen ions fully.Preferably be adjusted to nominal temperature t e_Soll, wherein the temperature actual value can draw according to the collection to the interior resistance of the interior resistance of heating element 36 or pump unit 16 or measuring unit 22.The name temperature for example is 780 ℃+/-50 ℃.
Internal-combustion engine 10 run durations may be at the waste gas position 12 li certain situation appears.They cause especially standing the high capacity of pump electrode 18 of the pump unit 16 of waste gas effect.These states for example are 12 li states when high oxygen concentration or high pressure occurring at the waste gas position.
High oxygen concentration for example appears at internal-combustion engine 10 and slides run duration, and at this moment the rotation speed n of internal-combustion engine 10 is higher than a rotary speed threshold value, yet wherein internal-combustion engine 10 does not require load.Interrupt fuel input in this case to internal-combustion engine 10.Therefore may 12 li risings that oxygen concentration occurs at the waste gas position, can reach 21% always, be equivalent to the oxygen concentration of ambient air.
Depend on valve signal KI and close if the exhaust gas valve 38 that has under a stable condition is adjusted drive unit 40 by means of valve, then at the waste gas position 12 li high pressure may appear.A kind of such exhaust gas valve 38 preferably is arranged on 12 li at the waste gas position of commercial car.By the exhaust gas pressure that adds a rising to internal-combustion engine 10 of closing of exhaust gas valve 38, thereby higher braking moment appears when sliding operation.
Described running state causes pump electrode 18,20, especially stands the load rise of the pump electrode 18 of waste gas effect, and this is that this causes the corresponding rising of pump unit 16 temperature owing to the high in other words pump electric current I P of high pump voltage UP may occur.Especially near the positions pump electrode 18,20 are on the hazard, and can easily pierce in this position from the foreign matter of waste gas, and this foreign matter may cause the poisoning of exhaust gas analyzer probe 14, until destruction.
According to the high capacity of the present invention for fear of exhaust gas analyzer probe 14, especially pump unit 16 pump electrode 18 in other words, 20 high capacity, designed under internal-combustion engine 10 running statees of regulation, when having at least with pump signal SP just pump voltage UP in other words pump electric current I P disconnect, yet wherein internal-combustion engine 10 operations and exhaust gas analyzer probe 14 is remained on the nominal temperature t e_Soll.If do not need to reflect the measurement signal UN of oxygen concentration in the waste gas, here be energy nernst voltage UN, pump signal SP is disconnected.Such running state for example be already mentioned internal-combustion engine 10 slide operation and the operation of internal-combustion engine 10 when exhaust gas valve 38 cuts out.Here should be with the position of exhaust gas valve 38, especially it is closed in other words, as mentioned above, is interpreted as the running state of internal-combustion engine 10.
If the temperature release signal FG_te that heating device specifies 56 provides represents: exhaust gas analyzer probe 14 has been heated to its nominal temperature t e_Soll, and pump signal device specifies 54 provides pump signal SP so.Just should depend on some running state of internal-combustion engine 10 in this case and disconnect pump signal SP.
It is simple especially that exhaust gas valve release signal FG_KI is provided, and this signal can be identical with valve signal KI, perhaps can obtain thus simply.
The running state of internal-combustion engine 10 is tried to achieve device in running state and is tried to achieve for 58 li.Sliding of internal-combustion engine 10 moves preferably according to the rotation speed n of internal-combustion engine 10 and according to being determined by the load L that internal-combustion engine 10 applies.If determined to slide operation, running state is tried to achieve device 58 so just provides and slides operation-release signal FG_SA, and it determines that device 54 sends signal indication for the pump signal: pump signal SP is disconnected.
Exhaust gas valve release signal FG_KI slides a kind of running state that is ready to represent internal-combustion engine 10 of operation-release signal FG_SA in other words, wherein before high capacity appears in exhaust gas analyzer probe 14, pump signal SP is disconnected.
Yet in addition also can be at the waste gas position 12 li disconnect pump signal SP when having measured high oxygen concentration.Measurement signal evaluating device 54 compares oxygen concentration and oxygen concentration-threshold value Lim_%O2 who records for this reason, and depends on that comparative result offers the pump signal with oxygen concentration-release signal FG_%O2 and determines device 54.The state of waste gas, especially oxygen concentration therefore should, as mentioned above, on meaning of the present invention, be interpreted as the running state of internal-combustion engine 10.
In the running state of the internal-combustion engine 10 that had illustrated, in other words when the state of the 12 li appearance in waste gas position, can set out thus: the measurement signal UN that need provide by exhaust gas analyzer probe 14 not, for example oxygen concentration yardstick or the NO in internal-combustion engine 10 waste gas
XTherefore-concentration can disconnect pump signal SP, thereby guarantee no longer that temporarily exhaust gas analyzer probe 14 is ready to measure., therefore provide pump signal SP to provide measurement signal UN to exhaust gas analyzer probe 14 again immediately when needed by preparation because yet heating element 36 also is heated.
The another kind of running state of internal-combustion engine 10, this moment, measurement signal UN might not need, and was a kind of stable running state, and wherein the measurement signal UN that is provided by exhaust gas analyzer probe 14 should just have little variation or even not change.Running state is tried to achieve a kind of steady operational status that device 58 is for example obtained internal-combustion engine 10 according to the rotation speed n and the load L of internal-combustion engine 10, this rotating speed and load with rotating speed interpretational criteria Lim_n in other words load evaluate criterion Lim_L estimate.
Rotating speed interpretational criteria Lim_n or load evaluate criterion Lim_L are for example corresponding to the rotation speed n maximum value of a regulation of the gradient of load L in other words.Rotating speed interpretational criteria Lim_n load evaluate criterion Lim_L in other words for example can also stipulate in addition as difference, the wherein current in other words load of current rotation speed n of having stipulated internal-combustion engine 10 as the basis that forms difference, they compare with corresponding parameters after scheduled time.If there is the condition of approximate steady operational status at least of internal-combustion engine 10, running state is tried to achieve device 58 stable operation-release signal FG_Sta just is provided so, and this signal can impel the pump signal to determine to disconnect when device 54 has pump signal SP at least.
A kind of verification of decision design sees whether stable running state exists at least one definite period.Regulation compares with the minimum ti-Min duration of operation for this reason, and the latter offers running state and tries to achieve device 58.The beginning of steady operational status of the regulation of internal-combustion engine 10 has been considered on basis as a comparison.
Claims (10)
1. be used to make the method for exhaust gas analyzer probe (14) operation of heating, this probe is arranged in the lining, waste gas position (12) of internal-combustion engine (10), wherein measuring run duration, give the pump electrode (18 of the pump unit (16) of exhaust gas analyzer probe (14), 20) provide pump signal (SP, UP, IP), this pump signal can be implemented in the oxonium ion transportation of lining, pump unit (16), it is characterized in that, exhaust gas analyzer probe (14) given be ready to move the time, exhaust gas analyzer probe this moment (14) is heated to nominal temperature (te_soll), and when internal-combustion engine (10) moves, if do not need the measurement signal (UN) of exhaust gas analyzer probe (14), running state (the KI that so just depends on internal-combustion engine (10), Lim_%O2, n cuts off pump signal (SP when L) having at least, UP, IP).
2. by the described method of claim 1, it is characterized in that (SP, UP are disconnected when IP) having at least the pump signal, if the oxygen concentration of lining, waste gas position (12) has surpassed oxygen concentration threshold value Lim_%O2.
3. by the described method of claim 1, it is characterized in that (SP, UP are disconnected when IP) having at least the pump signal, slide operation if internal-combustion engine (10) is in when having disconnected the fuel input.
4. by the described method of claim 1, it is characterized in that (SP, UP are disconnected when IP) having at least the pump signal, if internal-combustion engine (10) is under stable running state.
5. by the described method of claim 4, it is characterized in that, carry out verification, see whether stable running state has existed the minimum duration of operation (ti-Min) of regulation at least; And the pump signal (SP, UP is IP) just through just being disconnected afterwards the minimum duration of operation (ti-Min).
6. by the described method of claim 1, it is characterized in that (SP, UP are disconnected when IP) having at least the pump signal, have closed if be arranged in the exhaust gas valve (38) of the lining, waste gas position (12) of internal-combustion engine (10).
7. be used to make the device of exhaust gas analyzer probe (14) operation of heating, this probe is arranged in the lining, waste gas position (12) of internal-combustion engine (10), wherein measuring run duration, give the pump electrode (18 of the pump unit (16) of exhaust gas analyzer probe (14), 20) provide pump signal (SP, UP, IP), this pump signal can be implemented in the oxonium ion transportation of lining, pump unit (16), it is characterized in that, is provided with one at least and is used for implementing the special controller (50) that is provided with by the described method of one of claim 1 to 6, it includes the mechanism (52 that is used to implement this method, 54,56,58).
8. by the described device of claim 7, it is characterized in that, as mechanism (52,54,56,58) be provided with running state try to achieve device (58) be used to try to achieve the running state of internal-combustion engine (10) and pump signal regulation device (54) be used to provide the pump signal (SP, UP, IP).
9. computer program, its is implemented according to the institute of described method one of in the claim 1 to 6 in steps, if program is moved on computers.
10. computer program has the program-code on the machine-readable carrier of being stored in, and is used for implementing according to the described method of one of claim 1 to 6, if program is moved on computers.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200910029100 DE102009029100A1 (en) | 2009-09-02 | 2009-09-02 | Method for managing heated exhaust gas probe installed in exhaust gas zone of internal combustion engine of commercial vehicle, involves cutting pumping signals from time to time while operating internal combustion engine |
| DE102009029100.8 | 2009-09-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102003295A true CN102003295A (en) | 2011-04-06 |
| CN102003295B CN102003295B (en) | 2015-04-15 |
Family
ID=43524837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010271401.2A Active CN102003295B (en) | 2009-09-02 | 2010-09-01 | Method for managing exhaust gas probe and device for performing the method |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN102003295B (en) |
| DE (1) | DE102009029100A1 (en) |
| FR (1) | FR2949506B1 (en) |
| IT (1) | IT1400770B1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104105860A (en) * | 2011-11-29 | 2014-10-15 | 大陆汽车有限公司 | Method and device for the operation of a binary lambda sensor arranged in an exhaust gas tract of an internal combustion engine |
| CN109073591A (en) * | 2016-05-02 | 2018-12-21 | 大陆汽车有限公司 | Method for operating probe |
| WO2019109782A1 (en) * | 2017-12-04 | 2019-06-13 | 深圳市森世泰科技有限公司 | Device and method for measuring gas concentration |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012204808A1 (en) * | 2012-03-26 | 2013-09-26 | Robert Bosch Gmbh | Device and method for controlling the temperature of an exhaust gas sensor |
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| US5340462A (en) * | 1992-06-25 | 1994-08-23 | Mitsubishi Denki Kabushiki Kaisha | Air-fuel ratio sensor |
| DE10163912A1 (en) * | 2001-04-05 | 2003-02-06 | Bosch Gmbh Robert | Gas sensor, especially lambda probe |
| US6767442B1 (en) * | 1999-08-28 | 2004-07-27 | Robert Bosch Gmbh | Sensor element for determining the oxygen concentration in gas mixtures and method for its manufacture |
| US20050252771A1 (en) * | 2002-04-16 | 2005-11-17 | Hans-Martin Wiedenmann | Method for operating a broadband lambda probe |
| CN101240753A (en) * | 2007-02-07 | 2008-08-13 | 丰田自动车株式会社 | Gas sensor controller |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10316645A1 (en) | 2003-04-11 | 2004-10-28 | Robert Bosch Gmbh | Device for operating a gas sensor |
| DE102004061355A1 (en) | 2004-12-21 | 2006-07-06 | Robert Bosch Gmbh | Method and device for controlling a gas measuring probe |
-
2009
- 2009-09-02 DE DE200910029100 patent/DE102009029100A1/en active Pending
-
2010
- 2010-08-30 IT ITMI2010A001582A patent/IT1400770B1/en active
- 2010-08-31 FR FR1056901A patent/FR2949506B1/en not_active Expired - Fee Related
- 2010-09-01 CN CN201010271401.2A patent/CN102003295B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5340462A (en) * | 1992-06-25 | 1994-08-23 | Mitsubishi Denki Kabushiki Kaisha | Air-fuel ratio sensor |
| US6767442B1 (en) * | 1999-08-28 | 2004-07-27 | Robert Bosch Gmbh | Sensor element for determining the oxygen concentration in gas mixtures and method for its manufacture |
| DE10163912A1 (en) * | 2001-04-05 | 2003-02-06 | Bosch Gmbh Robert | Gas sensor, especially lambda probe |
| US20050252771A1 (en) * | 2002-04-16 | 2005-11-17 | Hans-Martin Wiedenmann | Method for operating a broadband lambda probe |
| CN101240753A (en) * | 2007-02-07 | 2008-08-13 | 丰田自动车株式会社 | Gas sensor controller |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104105860A (en) * | 2011-11-29 | 2014-10-15 | 大陆汽车有限公司 | Method and device for the operation of a binary lambda sensor arranged in an exhaust gas tract of an internal combustion engine |
| CN104105860B (en) * | 2011-11-29 | 2017-03-08 | 大陆汽车有限公司 | Method and apparatus for making the binary lambda seeker work being arranged in I. C. engine exhaust road |
| US9903790B2 (en) | 2011-11-29 | 2018-02-27 | Continental Automotive Gmbh | Method and device for the operation of a binary lambda sensor arranged in an exhaust gas tract of an internal combustion engine |
| CN109073591A (en) * | 2016-05-02 | 2018-12-21 | 大陆汽车有限公司 | Method for operating probe |
| US10845331B2 (en) | 2016-05-02 | 2020-11-24 | Vitesco Technologies GmbH | Method for operating an internal combustion engine |
| CN109073591B (en) * | 2016-05-02 | 2021-01-05 | 大陆汽车有限公司 | Method for operating a probe |
| WO2019109782A1 (en) * | 2017-12-04 | 2019-06-13 | 深圳市森世泰科技有限公司 | Device and method for measuring gas concentration |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2949506B1 (en) | 2016-11-11 |
| CN102003295B (en) | 2015-04-15 |
| ITMI20101582A1 (en) | 2011-03-03 |
| DE102009029100A1 (en) | 2011-03-03 |
| FR2949506A1 (en) | 2011-03-04 |
| IT1400770B1 (en) | 2013-07-02 |
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