Exhaust emission control apparatus for internal combustion engine

0001Exhaust-air-purification device of a specification internal-combustion engine Technical field

0002The present invention is poisonous Formation in relation, especially exhaust gas to the purifying facility of an internal-combustion engine. To the purifying facility of the internal-combustion engine which does catching and storage of a part, and performs reproduction operation periodically A leap is carried out.

0003Background art

0004Exhaust-air-purification device for purifying the exhaust gas discharged from an internal-combustion engine If it carries out, various kinds of forms are used according to the quality of exhaust gas, but the poisonous ingredient in exhaust gas is caught, and it is Regenerative operation for every suitable time interval after a subject. There are many for which Work is needed.

0005for example, Gaso the Lynn organization and most of operating periods especially except the time of acceleration, etc. -- it is -- Lee Gaso which performs A combustion As the object for Lynn organizations Lee under A combustion -- nitrogen an oxide is absorbed -- short-time Li Nitrogen oxide caught by A touch combustion (refer to international publication W 0 9 3 / 0 7 3 6 No. 3) as which the exhaust-air-purification device to emit is already proposed.

0006the operating period of the exhaust-air-purification device concerning the above-mentioned proposal and most is occupied Li 1 the nitrogen oxide contained during A combustion at exhaust gas -- an exhaust-air-purification device -- built-in -- Absorb to a To be absorbent. It is fuel when it is judged that absorptance declined. It increases and he is Li about the air-fuel ratio of exhaust gas. It is considered as Tsuchi and is nitrogen oxide from an absorbent. Reproduction operation to emit is performed. in addition -- being emitted by reproduction operation -- nitrogen an oxide -- an air-fuel ratio -- Li the inside of the exhaust gas which is Tsuchi -- unburnt hydrocarbon -- being returned by Carbon monoxide -- nitrogen gas, carbon dioxide, and water -- Translate Since Conversion is carried out, it is not directly emitted to the atmosphere. However, the inhalation air content and opportunity * proportional to the amount of nitrogen dioxide in exhaust gas Accumulation value of the product of load, Or it is simplified more and is an accumulation value of the number of rotations of an organization. It is based and the surplus absorptance of an absorbent is evaluated, Surplus absorptance is a predetermined value. When it is judged that it fell to below, fuel quantity is increased, and it is an exhaust-air-purification device. When reproduction operation is performed, depending on the temperature of exhaust gas, it is nitrogen oxidization. It is unavoidable that a thing is revealed into the atmosphere.

0007That is, he is Li from Lean about an air-fuel ratio. Absorbent Cfa - is also by the case where it switches to Tsuchi. eta eta and II -- Before becoming I I = (- I - / 7 * Osuna I) A touch, it is not returned completely but nitrogen oxide discharges nitrogen oxide. There is a possibility that it may be carried out.

0008however, Li of this air-fuel ratio Nitrogen oxidization at the time of the change to Lean from Tsuchi Switch the amount of discharge of a thing and size comes to the temperature of the absorbent at the time. Dependence is carried out -- absorbent temperature -- 2 0 If it is below 0 °C, it will become zero mostly about the amount of discharge of nitrogen oxide. Things are known.

0009then, temperature of these people and an absorbent (or temperature of exhaust gas) the time of going up more than a renewable temperature -- an absorbent -- surplus absorptance -- an owner -- As long as it is carrying out, stopping reproduction operation has also already proposed.

0010However, reproduction of an exhaust-air-purification device based on the temperature of the present absorbent Operation will not necessarily become the optimal.

0011namely It is Gasoline about the regenerating period of an exhaust-air-purification device. Accumulation value of the number of rotations of a A organization Even if it is a case where it controls in consideration of the temperature of the present exhaust gas in addition - When exhaust gas temperature rises abruptly during reproduction of an exhaust-air-purification device being alike -- exhaust air Ga When A temperature changes suddenly, disclosure into the atmosphere of nitrogen oxide occurs. there is fear -- temperature which can reproduce exhaust gas temperature during nitrogen oxide absorption the time of becoming a range -- an air-fuel ratio -- Li in order to consider it as A touch -- unnecessary -- Consumed fuel There is also a possibility that the amount of charges may increase.

0012On the other hand, as an exhaust-air-purification device for diesel engines, it is in exhaust gas. Patty contained Curate (carbon grain) Patty who catches Cue Leh Taffy (refer to provisional-publication-of-a-patent common 113 1 8 7 1 No. 5 gazette) as which the exhaust-air-purification device which reproduces the Le evening periodically is proposed.

0013That is, also in a Gel [ Di - ] organization, it exhausts before air discharge of exhaust gas. PATHECRAY in gas In order to remove A, he is Patty to an exhaust system. Kiyure 1 taffy Although the Le evening is installed, Patty Cue Leh Toff Collecting capacity of the A ring evening there is a limitation in power -- suitable Thailand ming -- Patekyu Leh A -- To remove

0014: It Z Carries out and is ', Les-

0015o

0016With then, the exhaust-air-purification device concerning the above-mentioned proposal, Exhaust gas temperature is high temperature. Pastilles when it becomes Les 1 It is Patti about removal by natural combustion of A. Dure Toff This which supports a catalyst in Ilta Come out as you promote. To, the time of exhaust gas temperature not being high temperature so much -- Patty Curie Taffy installing an oxidation catalyst in the Ruta upper stream -- nitric oxide in exhaust gas -- nitrogen dioxide after converting -- nitrogen dioxide and Patty Cue Leh making A react -- Patty Cue Leh This which carries out combustion removal of the To -- it is proposed.

0017However, This which has the conversion to nitrogen dioxide from nitric oxide by an oxidation catalyst, and exhaust gas temperature in prescribed temperature within the limits Since it is needed, it exhausts. He is Patty when gas temperature is out of the prescribed temperature range. Cue Leh A is burned. This to remove It cannot do.

0018Then, exhaust gas temperature from the number of rotations and load of a Gel [ Di - ] organization When it is judged that it is out of the prescribed temperature range, light-oil Pana It spreads. Heating by the electric Hee evening, air intake iris diaphragms, or such combination intermediary exhaust gas temperature is raised to prescribed temperature within the limits -- Patty Cury burn of To which promotes glow removal it burns -- it is proposed by coming out.

0019However, since the present exhaust gas is outside the prescribed temperature range, it is Light. Exhaust gas is prescribed temperature after it was judged that heating by oil Pana etc. was required. He is Patty without heating according to [ shift to within the limits and ] light-oil Pana etc. Cue Leh A It is in a Noodle case for combustion removal to be possible, It is specific fuel consumption because of unnecessary heating. Worsening This It is unavoidable. The indication of an invention

0020then, the object of the present invention and car navigation Gucci Profit from System etc. This which predicts the state of the exhaust gas after this time based on To be information Be alike. Ri, This which performs optimal reproduction operation in which specific fuel consumption does not get worse tau Chi gamma iota** Moth w Emissions^* shade Ancestral - A According to the present invention Detrimental constituent in the exhaust gas discharged from an internal-combustion engine A catching means to catch, It is this Trapping about the detrimental constituent caught by this catching means. Elimination means removed from a collection means, this time or later -- from an internal-combustion engine -- discharge -- The amount prediction means of exhaust gas states which predicts the quantity of state of To be exhaust gas, this -- Are based on the quantity of state of the exhaust gas predicted by the amount prediction means of exhaust gas states. Regenerating period determination determination hand of determining the regenerating period of the catching means by an elimination means Stage, It reached at the regenerating period determined by this regenerating period determination determination means. The exhaust gas purifying facility possessing the reproduction execution means which sometimes performs reproduction of the catching means by an elimination means is provided. Brief explanation of the drawings

0021Drawing 1, Gaso of the exhaust gas purifying facility concerning the present invention The Lynn organization is received. It is a lineblock diagram of an example.

0022Drawing 2, Gaso scheduled Yuri of the exhaust gas purifying facility of the Lynn organization A corner 1 Ching's Frochia 1 It is A.

0023Drawing 3, Flow Char of a reproduction operation time determination routine It is A. Drawing 4, Flow Char of a reproduction operation routine It is A.

0024Drawing 5, Flow Char of a reproduction execution routine It is A.

0025Drawing 6, Flow Char of a fuel injection routine It is A. Drawing 7, It is an explanatory view of the effect of the present invention.

0026Drawing 8, A Gel [ Di of the exhaust gas purifying facility concerning the present invention - ] organization is faced. It is a lineblock diagram of Example.

0027Drawing 9, Patty Cue Leh It is an operating range figure for A removal.

0028Drawing 1 Schedule of exhaust gas purifying facility of Gel [ 0 and Di - ] organization It is Frochia 1 A of a ring routine.

0029Drawing 1 1 is Frochia 1 of the 2nd reproduction operation schedule routine. Drawing 1 2 is flow Char of the reproduction execution routine of The 2. It is A. Drawing 1 3 and an exhaust gas purifying facility are Patiki Yure 1. Taffy It is the Le evening. It is an explanatory view of the effect of a case. The best form for inventing

0030Drawing 1 -- the present invention -- Gaso It is a lineblock diagram at the time of applying to the Lynn organization. Gaso Lynn organization 1 In 0, it is Air. Lena 1 1 1 and induction pipe 1 1 2, The

0031-- Sita An 1 1 3 and branch pipe 1 1 4 and inhalation valve 1 0 An air intake via 1 It is supplied.

0032Induction pipe 1 1 In 2, it is Slo. Total valve 1 1 6 is installed and it is gasoline engine 1. The inspired air volume supplied to 0 is controlled. work pipe 1 1 4 -- fuel injection valve 1 1 7 is installed -- fuel is injected during an air intake. Combustion chamber 1 0 The fuel-air mixture supplied to 1, and pith Ton 10 To 2 rises It is [ intermediary compression is carried out and / near the top dead center ] igniter plug 1. 0 It is lit by 3 and is Burn. A glow is carried out and it is pith. Ton 1 0 2 is depressed and driving force is generated.

0033the exhaust gas after combustion, and exhaust valve 1 2 1 and exhaust air Ma 2 hole Do 1 2 2 and exhaust pipe 1 passing 23 -- exhaust-air-purification device 1 2 it is led to 4 -- purification -- To be.

0034exhaust-air-purification device 1 2 the inside of four -- nitrogen oxide absorbent 1 2 5 is stored. it is -- in exhaust gas, when there are few amounts of remains oxygen, it is absorption about nitrogen oxide it carries out -- nitrogen oxide absorbed in exhaust gas when there were many amounts of remains oxygen It emits.

0035This exhaust-air-purification device 1 2 4 is my. It is a Crocon pewter system. Control part 1 Although controlled by 3, Control part 1 3 is bus 1. 3 It is a center about 1. It carries out and is C P U 1. 3 2, memo Li 13 3, input An area 1 face 1 3 4 and output Inter face 1 3 It comprises 5.

0036l "h A, -- Off ―Noma 1 Off ri", ", and To 1 1 R Ti fi^ Slo to detect Total opening sensor 1 3 6, Surge tank 1 1 Three pressure Manifold-air-pressure sensor 1 to detect 3 7, Gaso Lynn organization 1 Number of rotations of 9 Inspection Kula come out of and carried out An angle sensor 1 3 8 and exhaust-air-purification device 1 It builds in 24. Absorbent 1 carried out 2 Absorbent temperature sensor 1 which detects the temperature of 5 3 9 is Contact.

0037* E carry out -- it has omicron

0038input In evening 1 face 1 3 4 -- power 1 Navi Gateway Stem 1 4 1 and road-to-vehicle communication receiver 1 4 2 -- few -- Both -- one side -- Connection is carried out. Car navigation Gaming system 1 4 1 and road-to-vehicle communication reception Vessel 1 4 The operational status information acquired from 2 is control part 1. It is taken into 3.

0039Output Interface 1 3 In 5, it is igniter plug 1. 0 3 and fuel injection valve 1 1 7 is connected and it is control part 1. Ignition instructions and fuel which are outputted from 3 It is controlled by fuel injection valve valve-opening instructions.

0040Drawing 2 is control part 1 before a run of vehicles. Schedule performed by 3 Ring Flow Char of a routine It is A, Step 2 In 1, it is power 1 Na. Bigashion system 1 4 Sentiment about the future running route for which 1 was searched Kind (a highway, a local street, etc.) of news, i.e., run * Separation, and running route, the altitude of a running route, etc. are read.

0041Step 2 If it sets to 2, it is road-to-vehicle communication receiver 1. 4 It is received by 2. Traffic congestion anticipation information, traffic restriction information, etc. are read. Step 2 it sets to 3 -- the information about a running route, and traffic congestion anticipation information etc. -- it is based -- the running route to the destination -- i_maxIt classifies into the Running section and they are It was back and each run section i (1 * i * i)._m，_xevery -- distance D (i). driving speed Degree S (i) and Gaso Lynn organization load L (i), generating nitrogen oxide amount C (i), absorbent temperature T (i), etc. are predicted.

0042Step 2 In 4, it is Regenerative operation of an exhaust-air-purification device about all the run sections. It is run section Index in order to define Work time. It is an initial value of A cup i , "1"

0043'1' ... O gamma, -+1, ', <<1:To *& Le # >> BE" *& /Ar Ma',

0044(

0045-- Li A corner 1 Ching is performed -- this routine is ended.

0046Drawing 3, Step 2 Reproduction operation time determination routine performed by 5 Flow Char It is A, by the time of the end of a run of the pre-run section -- exhaust air purification nitrogen oxide amount Q absorbed into the device -- the run section -- if it generates in "i" nitrogen oxide amount C (i &lt;&lt;) predicted is added -- run section "i_s" -- nitrogen oxide amount Q absorbed into an exhaust-air-purification device after a run is calculated.

0047Step 2 5 It is run section" i at 2._s" -- nitrogen oxide amount Q after a run -- lower -- The amount Q of Absorption limit_{rai n}(For example, 1 0 %) It is judged whether it is above.

0048Step 2 5 It is nitrogen in the time of a negative judging being carried out by 2, i.e., an exhaust-air-purification device. It is Step 2 the time of it being judged that the oxide is not absorbed. 5 It progresses to 3 and is run section "i._sIt is run section "i as what does not perform reproduction by "._sReproduction execution flag R of "(i)_tIt is set as "0."

0049seeing step 2 -- the run section -- absorbent temperature T of "i" 5 (i) the time of an affirmation judging being carried out by 2, i.e., an exhaust-air-purification device, -- nitrogen the time of it being judged that the oxide is absorbed -- Step 2 5 4 -- Advance _sReproduction permissive temperature T_{al l}It is judged whether it is below w.

0050It is an absorbent in order to perform reproduction operation of the reason for making this judgment, and an absorbent. Although it is a premise that it is more than active temperature, they are being above and Regeneration permit. TemperatureT_{el l}._wWhen it becomes the above high temperature, it is nitrogen by reproduction operation. It is because there is a possibility that an oxide may be emitted to the atmosphere.

0051Run section" i and absorbent temperature T of "(i)_sReproduction permissive temperature tau_{beta 11}. Becoming more than w is predicted and it is Step 2. 5 A negative judging is carried out by 4. It is Step 2 the time of It was. 5 It progresses to 5 and is run section" i._s" -- nitrogen acid after a run or [ that the amount Q of ghosts is more than the amount of maximum absorption (for example, 7 0 %) ] -- seal It carries out constant.

0052Step 2 5 A margin is Ah in the time of a negative judging being carried out by 5, i.e., absorptance. A : It is * r* Work at * RT" i" to ^. Na It gamma Is and they are i and of. A foot 2 5 It progresses to 3.

0053Step 2 5 The time of an affirmation judging being carried out by 5, i.e., run section" i, and" Running Nitrogen oxide amount Q is the amount Q of maximum absorption after a line._m，_xWhen it exceeds and Step 2 5 The time of an affirmation judging being carried out by 4, i.e., run section" i_sIt reproduces by ". It is Step 2 the time of operation being permitted. 5 It is nitrogen oxidization, while progressing to 6 and setting reproduction execution flag R of run section "i and "(i) as "1". It is Reset about amount of resources Q. A is carried out.

0054Step 2 5 3 and Step 2 5 The end back of processing by 6, and Step 2 5 It is run section Í at 7. Ndecks i , is maximum i._ra，_xor [ it having been alike and having reached ] it judges -- the time of a negative judging being carried out -- Step 2 5 8 -- run section Indexi_sIncrement is carried out and it is Step 2. 5 It returns to 1. Step 2 5 When an affirmation judging is carried out by 7, this routine is ended directly.

0055Drawing 4 -- The Off mouth of the reproduction operation routine performed after the run start of vehicles -- Char &lt; step 4 which is A and is performed as interruption processing for every predetermined time in 1 -- for example, A lip meter to the run start back -- real -- Mileage D in the case_rReading and Step 4 It is until run section i at 2. It is judged whether they are prediction mileage D and the above. run section i -- it sets to Prediction mileage D and the initialization routine as for which a Is figure example is not -- it -- Re -- it shall be set as "0" Step 4 When an affirmation judging is carried out by 2, it runs run section i. It is Step 4 the time of finishing. It is prediction mileage D by a following formula at 3._supdating it carries out -- run section index i t -- Increment carrying out -- Step 4 It progresses to 4.

0056D_sD , + D (i ,)

0057i , -- i , + 1

0058Step 4 When a negative judging is carried out by 2, it is direct Step 4. It is ^ I to 4.

0059Step 4 In 4, it is run section i._tIt is judged whether it is (i) reproduction execution flag R power" 1" which can be boiled and set. And step 4 It runs the run section which does not perform the time of a negative judging being carried out by 4, i.e., reproduction operation. At the time of ing in order to perform Lean combustion -- Step 4 5 -- air-fuel ratio Correction coefficient kappa -- " -- carrying out -- 0" -- it is a setup to value K L (for example, "0 .7") of the following Carry out. Step 4 This which is A [ Li - ] burning combustion state flag X F by 6 It is set as "0" to express and is Step 4. It progresses to 8.

0060Step 4 Running which performs the time of an affirmation judging being carried out by 4, i.e., reproduction operation, It is Step 4 the time of running the line section. Reproduction operation was performed by 5. It is Step 4 behind. It progresses to 8.

0061Step 4 the schedule passage calculated in 8 -- vehicles -- operation -- It is judged whether it is Being done.

0062this judgment, speed, and Gaso The Lynn organization load (for example, pressure-of-induction-pipe power) and Absorption Each actual measurement and predicted value of Yield agent temperature are in agreement in a prescribed range. or -- This to judge It is possible.

0063Step 4 a time [ of a negative judging being carried out by 8 ], i.e., schedule, passage -- fate the time of a line not being carried out -- Step 4 9 -- Li Schedule Ring sake a figure -- rerunning Ringle [ Schedule of 3 - ] 1 Ching -- this routine -- The end It completes. Step 4 Schedule when an affirmation judging is carried out by 8 When operating as - Le, this routine is ended directly. Figure 5 is Step 4 of a reproduction operation routine. Reproduction execution Le performed by 7 1 Ching's flow Char It is A and is Step 4. 7 It is a combustion state hula at 1. It is judged whether it is A X F power"0."

0064Step 4 7 The time of an affirmation judging being carried out by 1, i.e., former Lean combustion, the time of being -- Step 4 7 it progresses to 2 -- air-fuel ratio correction coefficient K"1.

00650 " The above Value K_Rit is set as (for example, "1 .3") -- Step 4 7 3 -- Fuel^One 1 Age y T? -- II * means -- 'Ah' -- ^*To"-- "_￡^ End the routine of a lever probably.

0066Step 4 7 When a negative judging is carried out by 1, it is already Open about reproduction operation. When carrying out Beginning, Step 4 7 Required for the reproduction after a reproduction operation start at 4 it is judged whether time passed -- the time of a negative judging being carried out -- Step 4 7 it progresses to 2 -- the time of an affirmation judging being carried out -- Step 4 7 It progresses to 5.

0067That is, when it is considered that reproduction operation was completed, it is Return to the Lean combustion. It is Step 47 to a To sake. It is an air-fuel ratio correction coefficient at 5. It is K about kappa._Lit is alike and sets up -- Step 4 7 It is set as "0" which expresses that it is [ Lean ] under combustion about combustion state flag X F with 6, and this routine is ended.

0068Drawing 6 is Gaso. Fuel injection valve 1 of the Lynn organization 1 Fuel quantity injected from 7, immediately -- Fuel fuel injection valve 1 Flo of a fuel injection routine who decides on the valve-opening time of 17 1 Char it is A -- Step 6 in 1 -- Gaso Number of rotations N e and pressure-of-induction-pipe power P M of Lynn machine * are read.

0069Step 6 it sets to 2 -- Gaso Number of rotations N e of the Lynn organization, and induction pipe Basic fuel injection duration T P is found as a function of pressure PM.

0070T P - T P (N e, P M)

0071They are basic fuel injection duration T P and Gaso here. It is Burn at theoretical air fuel ratio about the Lynn organization. Valve-opening time of the fuel injection valve for supplying fuel required in order to carry out a glow It is determined by carrying out. Step 6 Fuel injection time A U is computed by multiplying air-fuel ratio correction coefficient K in 3 at basic fuel injection duration T P.

0072T A U - K and T P

0073while [ therefore, ] air-fuel ratio correction coefficient K is alike and is set up -- Gaso Lynn machine Moth serves as A [ Li - ] combustion -- K_RIt is Gaso, while it is alike and being set up. Lynn organization Li It becomes A touch combustion.

0074Drawing 7 is Gaso. It is Ah with the explanatory view of the effect at the time of applying the present invention to the Lynn organization. An intermediary and a horizontal axis express time.

0075(a), car Navigator 1 Shion system 1 4 1 and road-to-vehicle communication Receiver 1 4 The information about the running route acquired from 2 and traffic congestion information, and also the vehicle speed predicted based on them are shown.

0076(b) and control part 1 Gaso predicted by 3 The load of the Lynn organization, and absorbent Temperature and nitrogen oxide concentration are shown.

0077(c) and control part 1 Nitrogen oxidization absorbed into the absorbent predicted by 3 The nitrogen oxide amount discharged from the amount of resources and an absorbent is shown.

0078Namely, Gaso concerning the present invention According to the exhaust-air-purification device of the Lynn organization, it absorbs. The nitrogen oxide amount absorbed by the agent is judged to have reached the maximum. Place which sometimes has absorbent temperature at the temperature range with fear of nitrogen oxide discharge In Synthesis, As long as absorptance has a margin, absorbent temperature is nitrogen oxide discharge. Reproduction operation is postponed until it becomes temperature within the limits without fear.

0079(d), the conventional Gaso Reproduction operation by the exhaust-air-purification device of the Lynn organization It is shown. namely, the nitrogen oxide amount conventionally absorbed into the absorbent -- maximum the time of it being judged that it has reached -- irrespective of absorbent temperature -- Regenerative operation the case where an absorbent is high temperature since Work is performed -- nitrogen oxide -- a large -- This, to which mind is emitted This to avoid It cannot do.

0080Namely, Gaso concerning the present invention According to the exhaust-air-purification device of the Lynn organization, it reproduces. The number of times of operation not only decreases, but it controls discharge of the nitrogen oxide to the outside of a car. It is carried out.

0081Drawing 8 is a lineblock diagram of the example at the time of applying the present invention to the Di-Gel organization. It is, 8 1 is Diesel Machine Sekimoto Object and 8. 2 is Air Intake Ma 2 Hole. Do and 8 3 is Air Intake Ma 2 Hole. Do 8 Air Intake Duc Connected with Collective Part of 2 A, 8 4 is Air Intake Duc. A 8 Slo Arranged in Three Total Valve and 85 are Slos. Total Valve 8 One Actue Yue Evening for Driving 4, 8 6 is Exhaust Air Ma 2 Hole. Do and 8 7 is Exhaust Pipe and 8. 8 is Light-Oil Feed Unit, 8 9 is Electric Heater 8. 1 Heatake 1 Synge Who Built in 0, 8 1 1 is Oxidation Catalyst 8. 1 2 was Built in. Catalyst Co One Iron Evening, 8 1 3 is Patty of Honeycomb Structure. Cue Leh Taffy Le Evening 8 1 Phi Who Built in 4 Rutterke 1 Synge, 8 1 5 Shows Exhaust Pipe -- Light-Oil Feed Unit 8 Light-Oil Supply Po Which 8 Drives with Gel [ Di - ] Organization Power 8 1 6 and Pump 8 for Secondary Air Supply 1 Connect with 7. Light-oil Supply device 8 Necessity is accepted from 8 and light oil and secondary air are exhaust pipes 8. It is For in seven. It is supplied. Electric Hee evening 8 1 0 is oxidation catalyst 8. 1 It installs in two. Things are also possible.

0082control part 8 3 0 -- my Crocodile it is a Computer system -- bus 8 3 Memo mutually connected by 1 Li 8 3 2 and C P U 8 3 3 and input Vo - A 8 3 4 and output Pau A 8 35 is provided. Patty Cue Leh Taffy Ruta 8 1 Signal which is proportional to the pressure difference by the side of the upper stream and the lower stream 4 Generated differential pressure sensor 8 1 Power in which 8 is provided Differential pressure sensor 8 1 8 is an input bow. A 8 3 It is connected to 4. Exhaust gas by the side of the upper stream and the lower stream A pair of temperature sensors 8 which detect temperature 1 9 and 8 2 Although 0 is installed, it is temperature sensor 8 of these. 1 9 and 8 2 0 is an input bow. A 8 3 It is connected to 4. Too

0083accelerator 8 2 Signal which is proportional to the amount of treading in 1 Generated load sensor 8 2 2 is installed -- input Inter face 8 3 It is connected to 4. Further -- input port 8 3 4 -- rotation of an internal-combustion engine Number-of-rotations sensor 8 which outputs the pulse showing several N e 2 3 is connected. On the other hand, it is output Pau. A 8 3 5 is one Actue Yue evening 8. 5 and light-oil feed unit 8 8 electric heater 8 1 0 and pump 8 for secondary air supply 1 Since [ which reads the operational status information on vehicles further ] 7 is connected, Input Pau A 8 3 In 4, it is car navigation Gauche. Youngsi stem 8 4 1 and road-to-vehicle communication receiver 8 4 2 is connected.

0084Oxidation catalyst 8 1 Although the absorbent is supported by 2, Gel [ Di - ] organization the case where a lot of nitric oxide is included like exhaust gas -- exhaust gas when it is low temperature, nitric oxide in exhaust gas is absorbed -- exhaust gas 2 Nitric oxide absorbed into the nitrogen oxide absorbent when it was high temperature comparatively Base is emitted.

0085Therefore, exhaust gas is Patekyu. Leh It is at high temperature, so that ♪ burns automatically. There is nothing. Also The, 2 oxidization emitted from the oxidation catalyst when it was high temperature comparatively By nitrogen, he is downstream Patty. Curated Fill evening 8 1 It was caught by 4. Patty Cue Leh This which carries out combustion removal of the A It can do.

0086the following -- a figure -- setting to the usual operational status, although operation of the exhaust-air-purification device shown in 9 is explained -- Throttle valve 8 4 -- full open and light-oil feed unit 8 8 and electric heater 8 1 0 has stopped.

0087Drawing 9 -- Patekyu Leh it is an operating range explanatory view for A removal -- a vertical axis expresses organization load and a horizontal axis expresses organization number of rotations.

0088Oxidation catalyst 8 1 Conversion rate from nitric oxide in 2 to nitrogen dioxide, Exhaust gas temperature T g is 2. 3 0 °C to 4 5 When it is between 0 °C grades, namely, an operating range -- " -- it 3 becomes high when it is "-- light-oil Pana 8 8th grade Do not raise Exhaust gas temperature compulsorily. Both -- Patty Curate -- D oxidization it reacts to nitrogen -- Patty Cue Leh Combustion removal of the A is carried out.

0089When operational status is in operating range" 5", exhaust gas temperature is quantity. To and Particulate does not react with nitrogen dioxide. The is also natural combustion. It carries out.

0090On the other hand, operating range" 1" and "2", From nitric oxide to 2 acid Both the conversion rates and exhaust gas temperatures to-izing nitrogen are and Patty low. Kiyu This which carries out combustion removal of the Les 1 A It cannot do.

0091operating range "-- 4 "and conversion rate from nitric oxide to nitrogen dioxide it is low -- exhaust gas temperature -- Patty Cue Leh so that A burns automatically -- high temperature it is not .

0092So, at operating range" 4", it is Slo. Total valve 8 This which closes 4 a little This which raises exhaust gas temperature Patty Cue Leh A is burned. This to remove It becomes possible.

0093At operating range" 2", it is electric heater 8. 1 It is exhaust gas by 0. This to heat Or Throttle valve 8 To valve closing of some of 4 This which raises Exhaust gas temperature Patty Cue Leh It is combustion removal about A. This to carry out It becomes possible.

0094At operating range" 1", it is electric heater 8. 1 0 and light-oil Supply device 8 This which light oil is made to burn by 8 and raises exhaust gas temperature Patty Kiyure 1 This which carries out combustion removal of the A It becomes possible.

0095That is, in operating range" 3" or "5", it is wrong about specific fuel consumption. It is Patekyu, without making it turn. Leh Toff A ring evening 8 1 Reproduction operation of 4 is performed. Thing in which things are possible, In the other operating range, he is Patty. Cue Leh Toff Ilta 8 1 When reproduction operation of 4 is performed, it is electric heater 8. 1 0 or light-oil feed unit 8 8 or Throttle valve 8 Specific fuel consumption gets worse by iris diaphragm of 4.

0096Therefore, he is Patty at operating range" 3" or "5". Cue Leh Toff A ring evening 8 1 This which forms a schedule so that reproduction of 4 may be performed Must It becomes an important point.

0097Drawing 1 0 is control part 1 before a run of vehicles. Schedule of The 2 performed by 3 -- Flow Char of a ring routine It is A, Step 1 0 1 -- it is -- car navigation Gaming system 8 4 Future running route for which 1 was searched Kind of the related information, i.e., mileage, and running route, the altitude of running routes (a highway, local street , etc.), etc. are read.

0098Step 1 0 it sets to 2 -- road-to-vehicle communication receiver 8 4 It is received by 2. Traffic congestion anticipation information, traffic restriction information, etc. are read.

0099Step 1 0 it sets to 3 -- the information about a running route, and traffic congestion Anticipation being based on news etc. -- the running route to the destination -- i_mIt classifies into the run section of ". They are distance D (i) and a run in each run section i of every after carrying out. Gel [ Speed S (i) and Di - ] organization load L (i), generating Patty Kiyure 1 Amount of A C (i), exhaust gas temperature T g (i), etc. are predicted.

0100Step 1 0 In 4, it is reproduction of an exhaust-air-purification device about all the run sections. It is run section A in order to set operation time. Ndecksi_sIt is Initial value of "1

0101it is set as "-- Step 1 0 in 5 -- Patty Cue Leh Taffy The Le evening Reproduction operation Schedule a ring routine is performed -- this routine -- The end It completes.

0102Drawing 1 1 is Step 1. 0 Patekyu performed by 5 Leh Taffy Le evening Reproduction operation Schedule It is Frochia 1 ♪ of a ring routine, Step 1 0 He is Patty at 5 a at the time of the completion of a run of the pre-run section. Cue Leh Toffle evening 8 1 Catching Patty caught by 4 Cue Leh It is this Running to the amount S of A. Line section" i_sPatty who occurs while running " Cue Leh the amount C of A (i s) is added -- run section "-- it is caught at the time of the completion of a run of i and " Catching Patty Cue Leh the amount S of A is calculated -- Step 1 0 5 b -- run section "-- the operating range of i and "is judged.

0103Step 1 0 It is run section" i at 5 b._sThe operating range of "also spreads "1". It is Step 1 when it is judged that it is "2". 0 It progresses to 5c and he is catching Patty. Cue Leh The amount S of A is maximum collection volume S*,_xIt is judged from (for example, 1 2 0 %) whether it is size.

0104Step 1 0 The time of a negative judging being carried out by 5 c, i.e., Patty, Cue Leh Taffy Ruta 8 1 It is Step 1 the time of the collecting capacity power of 4 having a margin. 0 It is run section" i at 5 d._sIt is Light because of reproduction of reproduction execution flag R of "(i s). Combustion of oil, heating by an electric heater, Suro Regeneration, such as valve closing of a Total valve This which does not carry out Work It is set as "0" to express.

0105Step 1 0 The time of an affirmation judging being carried out by 5 c, i.e., Patty, Cue Leh Taffy Ruta 8 1 the time of there being no margin in the collecting capacity power of 4 -- Step 1 0 5 e -- run section "-- the operating range of i and "-- either "1" or "2". it is -- or is judged. And it is Step 1 if an operating range is "1". 0 They are combustion of light oil, and the electric Hee evening about reproduction execution flag R (i) at 5 f. Heating to depend is performed simultaneously. It is set as "3" showing things. It is reproduction execution flag R (i) at operation 5 g. It is Step 1 if a field is "2". 0_s

0106heating by the electric Hee evening, and Slo valve closing of a Total valve -- simultaneous -- line It is set as "2" which obtains and expresses things.

0107Step 1 0 It sets by 5 b and is run section" i._sThe operating range of "also spreads "3". When it is judged that it is "5", even if it does not carry out reproduction operation -- Patty (i s) Cue Leh since A is removable -- Step 1 0 5 h -- Advance seeing -- the run section -- "i and 0" -- To set upo

0108Step 1 0 It sets by 5 b and is run section" i._sThe operating range of "is "4". It is Step 1 when judged. 0 They are progress and catching Patty to 5 i. Cue Leh The amount S of A is middle collection volume S._{mi d}It is Ah in size from (for example, 1 0 0 %). It is judged whether it is To.

0109Step 1 0 The time of an affirmation judging being carried out by 5 i, i.e., catching Patty, Queu The amount S of rates is middle collection volume S._{mi d}It is reproduction execution flag R (i) at Patty 5 j, without making specific fuel consumption increase by not much in operating range"4" the time of being above. Cue Leh Taffy Ruta 8 1 It is Step 1 in order to perform reproduction operation a little early, since reproduction of 4 is possible. 0_sSlo They are some about a Total valve. This to close It is set as shown "1."

0110Step 1 0 The time of a negative judging being carried out by 5 i, i.e., catching Patty, Queu The amount S of rates is middle collection volume S._{m i d}He is still Patty the time of being the following. Kirate rate Ruta 8 1 As what has a margin in the collecting capacity power of 4, it is Step 1. 0 It is run section" i at 5 k._sIt is Regenerative operation about reproduction execution flag R of "(i s). This which does not carry out Work It is set as "0" to express.

0111Step 1 0 5 f and 1 0 5 g and 1 0 5 1 Bunch 1 0 After processing of 5"' Patty Cue Leh Taffy Ruta 8 1 That into which reproduction of 4 was made It carries out, Step 1 0 5 It is catching Patekyu at 1. Leh He is Li about the amount S of A. Set item is carried out and it is Step. A 1 0 It progresses to 5 m.

0112Step 1 0 5d and 1 0 He is Patty after processing of 5 k. Cue Leh Toff Ilta 8 1 Since reproduction of 4 is not performed, he is catching Patty. Kiyure 1 It is Reset about the amount S of A. A is not carried out but it is direct step 1. 0 It progresses to 5 m.

0113Step 1 0 it sets to 5 m -- all the run section -- prediction -- The end it completed, i.e., run section ", -- i_s"is maximum i._m，_xIt was alike and reach? It is a seal. Disconnect is carried out.

0114Step 1 0 It is Step 1 the time of a negative judging being carried out by 5 m. 0 It is ink about run section" i and "at 5 n. Lymment is carried out and it is Step 1. 0 It returns to 5 a. Step 1 0 Direct in this routine, when an affirmation judging is carried out by 5 m Close is carried out.

0115Drawing 1 reproduction operation Route of The 2 performed after 2 and the run start of vehicles Flow Char of A it is A -- every predetermined time -- interruption processing carrying out -- real -- A line is carried out.

0116Step 1 2 In 0, it is A. After [ one Lip Me evening to ] a run start Actual mileage D_rReading and Step 1 2 It is run section i at 1._tPrediction mileage D of until : It is judged whether it is above. 0 in addition -- in run section i and prediction mileage D, and the initialization routine as for which a Is figure example is not -- respectively -- " -- it is set as " It is considered as a thing.

0117Step 1 2 It runs the time of an affirmation judging being carried out by 1, i.e., run section i. It is Step 1 when finishing carrying out. 2 It is prediction run *SeparationD by a following formula at 2._sit updates -- run section index i -- Increment It carries out and progresses to step 1-2-3.

0118D , -- D_s+ D (i_t)

0119i , -- i , + 1

0120Step 1 2 When a negative judging is carried out by 1, it progresses to step 1-2-3 directly.

0121step 1-2-3 -- reproduction execution flag R (i) -- " -- or [ that it is 0 "] it judges -- not processing, in particular when an affirmation judging is carried out -- Step 1 2 It progresses to 8.

0122It is Step 1 when a negative judging is carried out by step 1-2-3. 2 The value of progress and reproduction execution flag R (i) is judged to 4.

0123Step 1 2 4 -- reproduction execution flag R (i) -- " -- it is 1 "-- seal the constant time of being carried out -- Step 1 2 it progresses to 5 -- Throttle valve 8 4 -- a few -- closed -- carrying out a valve -- Step 1 2 It progresses to 8.

0124Step 1 2 4 -- reproduction execution flag R (i) -- " -- it is 2 "-- seal the constant time of being carried out -- Step 1 2 it progresses to 6 -- Throttle valve 8 4 -- a few -- closed -- while carrying out a valve -- electric heater 8 energizing to 10 -- Step 1 2 8 -- move on.

0125Step 1 2 It is a seal that it is (i) reproduction execution flag R power" 3" in 4. It is Step 1 when [ constant ] carried out. 2 They are progress and electric heater 8 to 7. 1 It is Energize to 0. It is light-oil feed unit 8 in To. 8 to exhaust pipe 8 Light oil is supplied to 7 and it is Step. A 1 2 It progresses to 8. Step 1 2 At 8, it is reproduction operation Schedule 1. It computes by Ringer's solution 1000 A. It is judged whether vehicles operate as the schedule carried out. Gel [ This speed judged and surveyed and Di - ] organization load (for example, the amount of Aku cell pedal treading in) Or it is in agreement in Gel [ The speed exhaust gas temperature was predicted to be, and Di - ] machine Heavy load or exhaust gas temperature, and a prescribed range. This judged by whether it is It is possible.

0126Step 1 2 To a Le [ The time of an affirmation judging being carried out by 8, i.e., Schedule, - ] passage When it is considered that it is operated, this routine is ended directly -- &lt; -- being reverse and Step 1 2 The time of a negative judging being carried out by 8, i.e., a schedule, the time of it being considered that it is not operated at a passage -- Step 12 9 -- re--- Li of raw operation Schedule a ring is performed -- this routine is ended.

0127Li of reproduction operation Schedule 1 a ring -- a figure -- 1 Schedule 1 shown in 1 This which reruns a ring routine rescheduling -- Jew a ring -- line It obtains and things are possible.

0128Drawing 1 Patty of Gel [ 3 and Di - ] organization Cue Leh Taffy It is the present invention to the Le evening. It is an explanatory view of the effect at the time of applying, a horizontal axis -- time -- a vertical axis -- the upper -- from -- order -- prediction organization load and prediction exhaust gas temperature (solid line) And prediction generating Patty Cue Leh The amount of A, and Patekyu Leh Aggravation of A collection volume and specific fuel consumption A degree is expressed.

0129Patty Cue Leh To A collection volume and the aggravation degree of specific fuel consumption A dashed line shows the conventional case for the case where set and a solid line is based on the present invention.

0130namely, prediction organization load -- " -- it responds for changing with 2 -> 1 -> 4 -> 5" -- prediction exhaust gas temperature and prediction generating Patekyu Leh The amount of A is also changed. the number shown in prediction organization load -- a figure -- the operating range of 9 -- front I It is carrying out.

0131When Schedule of reproduction operation - a ring is not performed like before, Prediction He is Patty when Measurement machine * load is "4". Cue Leh Toff Catching of Ilta Quantity is 1. 0 It is Slo in order to reach 0 %. Total valve 9 Four valve-closing operations Exhaust gas temperature is raised and he is Patty. Cue Leh The necessity of carrying out combustion removal of the A It is. Under the present circumstances, Throttle valve 9 Specific fuel consumption is wrong by valve-closing operation of 4. It changes.

0132On the other hand, he is Patty, when the invention in this application is applied and prediction organization load is "4". Cue Leh Toff The collection volume of the A ring evening is 1. 0 Although 0 % is reached, it is the maximum collection volume 1. To 20 %, it is still generous. Reproduction operation is not performed by that.

0133And "5" and exhaust gas are [ an operating range ] high temperature in the next run section. It becomes and he is Patty. Curate is incinerated automatically. And it is A in this case. Lot valve 9 Since valve-closing operation of 4 is not performed, specific fuel consumption gets worse. Things do not have Is.