SE537805C2 - Motor vehicles comprising an exhaust after-treatment device - Google Patents

Motor vehicles comprising an exhaust after-treatment device Download PDF

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Publication number
SE537805C2
SE537805C2 SE1251115A SE1251115A SE537805C2 SE 537805 C2 SE537805 C2 SE 537805C2 SE 1251115 A SE1251115 A SE 1251115A SE 1251115 A SE1251115 A SE 1251115A SE 537805 C2 SE537805 C2 SE 537805C2
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SE
Sweden
Prior art keywords
exhaust
duct
motor vehicle
outlet
treatment device
Prior art date
Application number
SE1251115A
Other languages
Swedish (sv)
Other versions
SE1251115A1 (en
Inventor
Kenneth Persson
Original Assignee
Scania Cv Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Scania Cv Ab filed Critical Scania Cv Ab
Priority to SE1251115A priority Critical patent/SE537805C2/en
Priority to PCT/SE2013/051088 priority patent/WO2014055009A1/en
Priority to DE112013004327.0T priority patent/DE112013004327T5/en
Publication of SE1251115A1 publication Critical patent/SE1251115A1/en
Publication of SE537805C2 publication Critical patent/SE537805C2/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features having thermal insulation
    • F01N13/141—Double-walled exhaust pipes or housings
    • F01N13/145—Double-walled exhaust pipes or housings with a gas other than air filling the space between both walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2470/00—Structure or shape of exhaust gas passages, pipes or tubes
    • F01N2470/08—Exhaust gas passages being formed between the walls of an outer shell and an inner chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2470/00—Structure or shape of exhaust gas passages, pipes or tubes
    • F01N2470/22—Inlet and outlet tubes being positioned on the same side of the apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2470/00—Structure or shape of exhaust gas passages, pipes or tubes
    • F01N2470/24—Concentric tubes or tubes being concentric to housing, e.g. telescopically assembled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/08—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for heavy duty applications, e.g. trucks, buses, tractors, locomotives

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Silencers (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

537 80 SAMMANDRAG Avgasefterbehandlingssystem for ett motorfordon innefattande: - en avgasledning (10), - en i avgasledningen anordnad avgasefterbehandlingsanordning (12), - en i avgasledningen ingaende forsta avgaskanal (10a), vilken är ansluten till avgasefterbehandlingsanordningens inlopp (16), och - en i avgasledningen ingaende andra avgaskanal (10b), vilken är ansluten till avgasefterbehandlingsanordningens utlopp (17) for att leda de fran detta utlopp utstrommande avgaserna vidare i riktning mot avgasledningens avgasutlopp (11). Den andra avgaskanalen (10b) innefattar ett kanalparti (19) som stracker sig langs med och omger ett kanalparti (18) hos den for- sta avgaskanalen (10a), varvid flodesriktningen for avgaserna i namnda kanalparti (19) hos den andra avgaskanalen ar motsatt flodesriktningen for avgaserna i namnda kanalparti (18) hos den forsta avgaskanalen. 537 80 SUMMARY Exhaust after-treatment system for a motor vehicle comprising: - an exhaust line (10), - an exhaust after-treatment device (12) arranged in the exhaust line, - a first exhaust duct (10a) entering the exhaust line, which is connected to the exhaust after-treatment device and inlet (16), second exhaust duct (10b) in the exhaust line, which is connected to the outlet (17) of the exhaust after-treatment device to direct the exhaust gases flowing out of this outlet further in the direction of the exhaust outlet (11) of the exhaust line. The second exhaust duct (10b) comprises a duct portion (19) extending along and surrounding a duct portion (18) of the first exhaust duct (10a), the flow direction of the exhaust gases in said duct portion (19) of the second exhaust duct being opposite the flow direction of the exhaust gases in said duct portion (18) of the first exhaust duct.

Description

537 80 av pabyggnaden hos en lastbil med dubbla framaxlar och ett hogt och bakom hyttenheten placerat avgasutlopp nar lastbilen forses med en avgasefterbehandlingsanordning som är sa utrymmeskravande att den maste placeras bakom den bakersta framaxeln istallet for i utrymmet mellan de tv5 framaxlarna. Genom att de varma avgaserna efter sin passage genom avgasefterbehandlingsanordningen bringas att str6mma genom ett utrymme som omger den uppstroms avgasefterbehandlingsanordningen anordnade forsta avgaskanalen kommer den av omgivningsluften orsa- kade avkylningen av avgaserna i den forsta avgaskanalen att motverkas av varmen hos avgaserna som strommar genom nemnda omgivande utrymme. Harigenom kommer avgasefterbehandlingsanordningen att varmas upp fortare efter kallstart s5 att exempelvis en i avgasefterbehandlingsanordningen ingaende SCR-katalysator snabbare varms upp till den arbetstemperatur vid vilken SCR-katalysatorn borjar fungera pa ett effektivt satt. 537 80 of the superstructure of a truck with double front axles and a high exhaust outlet located behind the cab unit when the truck is equipped with an exhaust aftertreatment device that is so space consuming that it must be placed behind the rear front axle instead of in the space between the tv5 front axles. By causing the hot exhaust gases after their passage through the exhaust after-treatment device to flow through a space surrounding the first exhaust duct arranged upstream of the exhaust exhaust after-treatment device, the cooling of the exhaust gases caused by the ambient air in the first exhaust duct will be counteracted by the heat of the exhaust gases. . As a result, the exhaust aftertreatment device will heat up faster after a cold start, so that, for example, an SCR catalyst which does not enter the exhaust aftertreatment device heats up more quickly to the operating temperature at which the SCR catalyst begins to function efficiently.

Andra fordelaktiga sal-drag hos motorfordonet enligt uppfinningen framgar av de osjalvstandiga patentkraven och den nedan Rik jande beskrivningen. Other advantageous features of the motor vehicle according to the invention appear from the dependent claims and the following detailed description.

KORT BESKRIVNING AV RITNINGARNA Uppfinningen kommer i det foljande att narmare beskrivas med hjalp av utforingsexempel, med hanvisning till bifogade ritningar. BRIEF DESCRIPTION OF THE DRAWINGS The invention will be described in more detail below with the aid of exemplary embodiments, with reference to the accompanying drawings.

Det visas i: Fig 1en schematisk sidovy av ett motorfordon forsett med ett avgasefterbehandlingssystem enligt en utforings- form av foreliggande uppfinning, 3 537 80 Fig 2en schematisk sidovy av avgasefterbehandlingssyste- met has motorfordonet enligt Fig 1, och Fig 3ett snitt enligt linjen III-III i Fig 2. It is shown in: Fig. 1 a schematic side view of a motor vehicle provided with an exhaust aftertreatment system according to an embodiment of the present invention, Fig. 2 a schematic side view of the exhaust aftertreatment system has the motor vehicle according to Fig. 1, and Fig. 3 a section along the line III-III in Fig. 2.

DETALJERAD BESKRIVNING AV UTFORINGSFORMER AV UPPFINNINGEN I Fig 1 illustreras ett motorfordon 1 forsett med ett avgasefterbe- handlingssystem enligt en utforingsform av foreliggande uppfinning. Motorfordonet 1 innefattar en fordonsram 2, en i den framre delen av motorfordonet anordnad hyttenhet 3 med ett forarutrymme och en bakom hyttenheten anordnad pabyggnad 4. Hytt- enheten 3 och pabyggnaden 4 är uppburna av fordonsramen 2. I det illustrerade exemplet är motorfordonet 1 en lastbil som är forsedd med en pabyggnad 4 i form av ett tippflak. Det uppfinningsenliga avgasefterbehandlingssystemet skulle dock aven kunna vara anordnat i en lastbil som är forsedd med en annan typ av pabyggnad eller i en annan typ av tungt motorfordon. DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION Fig. 1 illustrates a motor vehicle 1 provided with an exhaust aftertreatment system according to an embodiment of the present invention. The motor vehicle 1 comprises a vehicle frame 2, a cab unit 3 arranged in the front part of the motor vehicle with a driver's compartment and a superstructure 4 arranged behind the cab unit. The cab unit 3 and the superstructure 4 are supported by the vehicle frame 2. which is provided with a superstructure 4 in the form of a tipping platform. However, the exhaust aftertreatment system according to the invention could also be arranged in a truck which is provided with a different type of superstructure or in another type of heavy motor vehicle.

Motorfordonet 1 innefattar en forsta framaxel 5a och en andra framaxel 5b, varvid den andra framaxeln 5b är anordnad bakom den forsta framaxeln 5a sett i motorfordonets langdriktning. Var och en av framaxlarna 5a, 5b ar forsedd med tva eller flera hjul 6. En forbranningsmotor 7 (se Fig 2) är anordnad vid motorfordonets framre ande under hyttenheten 3. Forbranningsmotorn 7 är belagen framfor den andra framaxeln 5b och i narheten av den forsta framaxeln 5a. 4 537 80 I Fig 2 illustreras motorfordonets avgasefterbehandlingssystem 8. Detta avgasefterbehandlingssystem 8 innefattar en avgasledning 10 far ledning av avgaser fran motorfordonets forbranningsmotor 7 till ett avgasutlopp 11 som är anordnat vid avgas- ledningens nedstramsande och via vilket avgaserna avges till omgivningen. En avgasefterbehandlingsanordning 12 är inkopplad i avgasledningen 10 mellan forbranningsmotorn 7 och avgasutloppet 11. I det illustrerade exemplet är avgasefterbehandlingsanordningen 12 belagen bakom den andra framaxeln 5b sett i motorfordonets langdriktning, medan avgasledningens avgasut- lopp 11 är belaget mellan de tva framaxlarna 5a, 5b sett i motorfordonets langdriktning. The motor vehicle 1 comprises a first front axle 5a and a second front axle 5b, the second front axle 5b being arranged behind the first front axle 5a seen in the longitudinal direction of the motor vehicle. Each of the front axles 5a, 5b is provided with two or more wheels 6. An internal combustion engine 7 (see Fig. 2) is arranged at the front of the motor vehicle under the cab unit 3. The internal combustion engine 7 is located in front of the second front axle 5b and near the first front axle 5a. Fig. 2 illustrates the exhaust vehicle after-treatment system 8 of this motor vehicle. This exhaust after-treatment system 8 comprises an exhaust line 10 for directing exhaust gases from the internal combustion engine 7 of the motor vehicle to an exhaust outlet 11 arranged at the exhaust line of the exhaust line and through which the exhaust gases are emitted to the environment. An exhaust aftertreatment device 12 is connected in the exhaust line 10 between the internal combustion engine 7 and the exhaust outlet 11. In the illustrated example, the exhaust aftertreatment device 12 is coated behind the second front axle 5b seen in the longitudinal direction of the motor vehicle, while the exhaust line exhaust is 11. the longitudinal direction of the motor vehicle.

Avgasefterbehandlingsanordningen 12 kan innefatta en enskild avgasefterbehandlingsenhet eller en uppsattning av tva eller flera seriekopplade och/eller parallellkopplade avgasefterbehandlingsenheter, dar respektive avgasefterbehandlingsenhet exempelvis utgors av en katalysator eller ett partikelfilter. Avgasefterbehandlingsanordningen 12 kan aven innefatta ljuddamp- ningsmedel for dampning av ljud orsakat av avgaserna. I det illu- strerade exemplet innefattar avgasefterbehandlingsanordningen 12 en forsta avgasefterbehandlingsenhet i form av en katalysator 13, exempelvis en SCR-katalysator, en andra avgasefterbehandlingsenhet i form av ett partikelfilter 14 samt ljuddampningsmedel 15, vilka är schematiskt indikerade med streckade linjer i Fig 2. The exhaust after-treatment device 12 may comprise a single exhaust after-treatment unit or a set-up of two or more series-connected and / or parallel-connected exhaust after-treatment units, where the respective exhaust after-treatment unit consists, for example, of a catalyst or a particulate filter. The exhaust after-treatment device 12 may also comprise sound-damping means for steaming sound caused by the exhaust gases. In the illustrated example, the exhaust aftertreatment device 12 comprises a first exhaust aftertreatment unit in the form of a catalyst 13, for example an SCR catalyst, a second exhaust aftertreatment unit in the form of a particle filter 14 and sound evaporators 15, which are schematically indicated by dashed lines in Fig. 2.

Avgasledningen 10 innefattar en forsta avgaskanal 10a, via vilken avgaser fran forbranningsmotorn 7 leds till avgasefterbehandlingsanordningen 12, och en andra avgaskanal 10b, via vil30 ken avgaserna efter sin passage genom avgasefterbehandlings- 537 80 anordningen 12 leds fran avgasefterbehandlingsanordningen till avgasutloppet 11. I det illustrerade exemplet är den forsta avgaskanalen 10a vid sin uppstromsande ansluten till ett utlopp 9 hos forbranningsmotorn 7 och vid sin nedstromsande ansluten till ett inlopp 16 hos avgasefterbehandlingsanordningen 12, medan den andra avgasledningen 10b vid sin uppstromsande är ansluten till ett utlopp 17 hos avgasefterbehandlingsanordning 12 och vid sin nedstromsande är ansluten till avgasutloppet 11. The exhaust line 10 comprises a first exhaust duct 10a, via which exhaust gases from the internal combustion engine 7 are led to the exhaust aftertreatment device 12, and a second exhaust duct 10b, via which the exhaust gases after their passage through the exhaust aftertreatment device 12 are led from the exhaust aftertreatment device 11 to the exhaust outlet. the first exhaust duct 10a at its upstream is connected to an outlet 9 of the internal combustion engine 7 and at its downstream connected to an inlet 16 of the exhaust aftertreatment device 12, while the second exhaust line 10b at its upstream is connected to an outlet 17 of the exhaust aftertreatment device 12 and at its downstream is connected to the exhaust outlet 11.

Den andra avgaskanalen 10b innefattar ett kanalparti 19 som stracker sig langs med och omger ett kanalparti 18 hos den farsta avgaskanalen 10a, varvid flodesriktningen for avgaserna i namnda kanalparti 19 hos den andra avgaskanalen 10b är motsatt flodesriktningen for avgaserna i namnda kanalparti 18 hos den f6rsta avgaskanalen 10a. Dessa kanalpartier 18, 19 är pa- rallella med varandra och koaxiellt anordnade, sasom illustreras i Fig 2 och 3. The second exhaust duct 10b comprises a duct portion 19 extending along and surrounding a duct portion 18 of the first exhaust duct 10a, the flow direction of the exhaust gases in said duct portion 19 of the second exhaust duct 10b being opposite the flow direction of the exhaust gases in said duct portion 18 of the first exhaust duct 10a. These channel portions 18, 19 are parallel to each other and coaxially arranged, as illustrated in Figs. 2 and 3.

Hos den illustrerade utforingsformen är n6mnda kanalparti 19 hos den andra avgaskanalen 10b ringformigt sett i tvarsnitt, me- dan namnda kanalparti 18 hos den forsta avgaskanalen 10a är cirkulart sett i tvarsnitt. Kanalpartierna 18, 19 kan aven ha annan tvarsnittsform, sasom exempelvis elliptisk eller polygon tvarsnittsform. In the illustrated embodiment, said duct portion 19 of the second exhaust duct 10b is annular in cross-section, while said duct portion 18 of the first exhaust duct 10a is circular in cross-section. The channel portions 18, 19 can also have another cross-sectional shape, such as for example elliptical or polygonal cross-sectional shape.

Hos den illustrerade utf6ringsformen uppvisar namnda kanalparti 18 hos den forsta avgaskanalen 10a ett axiellt riktat inlopp 20 vid sin uppstromsande och ett axiellt riktat utlopp 21 vid sin nedstromsande, medan namnda kanalparti 19 hos den andra avgas- kanalen 10b uppvisar ett radiellt riktat inlopp 22 vid sin upp- 6 537 80 stromsande och ett radiellt riktat utlopp 23 vid sin nedstromsande. Hos den illustrerade utforingsformen innefattar den andra avgaskanalen 10b ett ytterligare kanalparti 24 som är fristaende fran den forsta avgaskanalen 10a och som bildar en forbindelse mellan avgasefterbehandlingsanordningens utlopp 17 och inlop- pet 22 hos kanalpartiet 19. Den andra avgaskanalen 10b innefattar dessutom ett ytterligare kanalparti 25 som är fristaende fran den forsta avgaskanalen 10a och som bildar en forbindelse mellan utloppet 23 hos kanalpartiet 19 och avgasutloppet 11. In the illustrated embodiment, said channel portion 18 of the first exhaust duct 10a has an axially directed inlet 20 at its upstream and an axially directed outlet 21 at its downstream, while said channel portion 19 of the second exhaust duct 10b has a radially directed inlet 22 at its upstream and a radially directed outlet 23 at its downstream. In the illustrated embodiment, the second exhaust duct 10b comprises a further duct portion 24 which is independent of the first exhaust duct 10a and which forms a connection between the outlet 17 of the exhaust after-treatment device and the inlet 22 of the duct portion 19. The second exhaust duct 10b further comprises a further duct portion 25 which is independent of the first exhaust duct 10a and which forms a connection between the outlet 23 of the duct portion 19 and the exhaust outlet 11.

Kanalpartiet 25 stracker sig i vertikal riktning uppat mellan hytt- enheten 3 och pabyggnaden 4 hos motorfordonet. The duct portion 25 extends in the vertical direction upwards between the cab unit 3 and the superstructure 4 of the motor vehicle.

Uppfinningen är givetvis inte pa nagot satt begransad till de ovan beskrivna utforingsformerna, utan en mangd mojligheter till mo- difikationer darav torde vara uppenbara for en fackman pa omradet, utan att denne for den skull avviker fran uppfinningens grundtanke sadan denna definieras i bifogade patentkrav. 7 The invention is of course not limited in any way to the embodiments described above, but a multitude of possibilities for modifications thereof should be obvious to a person skilled in the art, without the latter deviating from the basic idea of the invention as defined in the appended claims. 7

Claims (8)

537 80 PATENTKRAV 1. Motorfordon innefattande:537 80 CLAIMS 1. Motor vehicles comprising: 1. en forbranningsmotor (7), - en forsta framaxel (5a), 2. en andra framaxel (5b), varvid den andra framaxeln (5b) är anordnad bakom den forsta framaxeln (5a) sett i motorfordonets langdriktning och forbranningsmotorn (7) är anordnad vid motorfordonets framre ande framfor den andra framaxeln (5b), - en i den framre delen av motorfordonet anordnad hyttenhet (3) med ett forarutrymme, 3. en bakom hyttenheten (3) anordnad pabyggnad (4), - en avgasledning (10) for ledning av avgaser fran forbranningsmotorn (7) till ett avgasutlopp (11) som är anordnat vid avgasledningens nedstromsande far avgivning av avgaserna till omgivningen, varvid avgasutloppet (11) är belaget framfor den andra framaxeln (5b) sett i motorfordonets langdriktning. - en i avgasledningen (10) anordnad avgasefterbehandlingsanordning (12), vilken uppvisar ett inlopp (16) for mottagning av avgaser fran avgasledningen och ett utlopp (17) for avgiv- fling av avgaserna till avgasledningen efter deras passage genom avgasefterbehandlingsanordningen, varvid denna avgasefterbehandlingsanordning (12) är anordnad bakom den andra framaxeln (5b) sett i motorfordonets langdriktning - en i avgasledningen (10) ingaende forsta avgaskanal (10a), vilken är ansluten till avgasefterbehandlingsanordningens inlopp (16) och vilken är avsedd att mottaga avgaser for att leda dessa avgaser vidare till avgasefterbehandlingsanordningen (12), och 8 537 80 - en i avgasledningen (10) ingaende andra avgaskanal (10b), vilken är ansluten till avgasefterbehandlingsanordningens utlopp (17) far att leda de fran detta utlopp utstrommande avgaserna vidare i riktning mot avgasledningens avgasutlopp (11), kannetecknat darav: - att den andra avgaskanalen (10b) innefattar ett forsta kanalparti (19) som stracker sig langs med och omger ett kanalparti (18) hos den farsta avgaskanalen (10a), varvid flodesriktningen for avgaserna i namnda forsta kanalparti (19) hos den andra avgaskanalen (10b) är motsatt flodesriktningen for av- gaserna i namnda kanalparti (18) hos den forsta avgaskanalen (10a), - att namnda forsta kanalparti (19) hos den andra avgaskanalen (10b) uppvisar ett radiellt riktat utlopp (23) vid sin nedstromsande, och - att den andra avgaskanalen (10b) innefattar ett andra kanalparti (25) som är fristaende fran den forsta avgaskanalen (10a) och som bildar en fi5rbindelse mellan det forsta kanalpartiets radiellt riktade utlopp (23) och avgasutloppet (11), varvid det andra kanalpartiet (25) stracker sig i vertikal rikt- ning uppat mellan hyttenheten (3) och pabyggnaden (4).1. an internal combustion engine (7), - a first front axle (5a), 2. a second front axle (5b), the second front axle (5b) being arranged behind the first front axle (5a) seen in the longitudinal direction of the motor vehicle and the internal combustion engine (7) is arranged at the front of the motor vehicle in front of the second front axle (5b), - a cab unit (3) arranged in the front part of the motor vehicle with a driver's compartment, 3. a superstructure (4) arranged behind the cab unit (3), - an exhaust line (10 ) for directing exhaust gases from the internal combustion engine (7) to an exhaust outlet (11) arranged at the downstream father of the exhaust line discharging the exhaust gases to the environment, the exhaust outlet (11) being coated in front of the second front axle (5b) seen in the longitudinal direction of the motor vehicle. an exhaust after-treatment device (12) arranged in the exhaust line (10), which has an inlet (16) for receiving exhaust gases from the exhaust line and an outlet (17) for discharging the exhaust gases to the exhaust line after their passage through the exhaust after-treatment device (said exhaust after-treatment device). 12) is arranged behind the second front axle (5b) seen in the longitudinal direction of the motor vehicle - a first exhaust duct (10a) entering the exhaust line (10), which is connected to the inlet (16) of the exhaust after-treatment device and which is intended to receive exhaust gases to guide these exhaust gases. further to the exhaust after-treatment device (12), and a second exhaust duct (10b) entering the exhaust line (10), which is connected to the outlet (17) of the exhaust after-treatment device, is led to discharge the exhaust gases emanating from this outlet further towards the exhaust outlet of the exhaust line ( 11), characterized in that: - that the second exhaust duct (10b) comprises a first pair of ducts ti (19) extending along and surrounding a duct portion (18) of the first exhaust duct (10a), the flow direction of the exhaust gases in said first duct portion (19) of the second exhaust duct (10b) being opposite to the river direction of the exhaust gases in said channel portion (18) of the first exhaust duct (10a), - that said first duct portion (19) of the second exhaust duct (10b) has a radially directed outlet (23) at its downstream flow, and - that the second exhaust duct (10b) comprises a second duct portion (25) projecting from the first exhaust duct (10a) and forming a connection between the radially directed outlet (23) of the first duct portion and the exhaust outlet (11), the second duct portion (25) extending in the vertical direction. between the cab unit (3) and the building (4). 2. Motorfordon enligt krav 1, kannetecknat darav, att avgasefterbehandlingsanordningen(12)innefattar ljuddampningsmedel (15) for dampning av ljud orsakat av av- gaserna.Motor vehicle according to claim 1, characterized in that the exhaust gas aftertreatment device (12) comprises sound damping means (15) for steaming sound caused by the exhaust gases. 3. Motorfordon enligt krav 1 eller 2, kannetecknat darav, att avgasefterbehandlingsanordningen(12)innefattaren katalysator (13) och/eller ett partikelfilter (14). 9 537 80Motor vehicle according to claim 1 or 2, characterized in that the exhaust gas aftertreatment device (12) comprises a catalyst (13) and / or a particulate filter (14). 9 537 80 4. Motorfordon enligt nagot av kraven 1-3, kannetecknat darav, att namnda forsta kanalparti (19) hos den andra avgaskanalen (10b) är ringformigt sett i tvarsnitt.Motor vehicle according to any one of claims 1-3, characterized in that said first duct portion (19) of the second exhaust duct (10b) is annular in cross section. 5. Motorfordon enligt nagot av kraven 1-5, kannetecknat darav, att namnda forsta kanalparti (19) hos den andra avgaskanalen (10b) uppvisar ett radiellt riktat inlopp (22) vid sin uppstromsande.Motor vehicle according to any one of claims 1-5, characterized in that said first duct portion (19) of the second exhaust duct (10b) has a radially directed inlet (22) at its upstream. 6. Motorfordon enligt krav 5, kannetecknat darav, att den andra avgaskanalen (10b) innefattar ett ytterligare kanalparti (24), vilket är fristaende fran den forsta avgaskanalen (10a) och vilketbildarenforbindelsemellanavgasef- terbehandlingsanordningens utlopp (17) och inloppet (22) hos det forsta kanalpartiet (19) hos den andra avgaskanalen (10b).Motor vehicle according to claim 5, characterized in that the second exhaust duct (10b) comprises a further duct portion (24), which is independent of the first exhaust duct (10a) and which forms a connection between the exhaust (17) of the exhaust after-treatment device and the inlet (22) of the the first duct portion (19) of the second exhaust duct (10b). 7. Motorfordon enligt nagot av kraven 1-6, kannetecknat darav, att namnda kanalparti (18) has den forsta avgaskanalen (10a) uppvisar ett axiellt riktat inlopp (20) vid sin uppstromsande.Motor vehicle according to any one of claims 1-6, characterized in that said duct portion (18) has the first exhaust duct (10a) having an axially directed inlet (20) at its upstream. 8. Motorfordon enligt nagot av kraven 1-7, kannetecknat darav, att namnda kanalparti (18) has den forsta avgaskanalen (10a) uppvisar ett axiellt riktat utlopp (21) vid sin nedstromsande. -... /\ .-2 E1- .7-•/.\il/7/ I\ 1 tI 9/ 81 in-„i\I \. le _t______.,______,.. _ _ TIT 41-1zr st —6 ci of 11 VS e'e hrMotor vehicle according to any one of claims 1-7, characterized in that said duct portion (18) has the first exhaust duct (10a) having an axially directed outlet (21) at its downstream flow. -... / \.-2 E1- .7- • /. \ Il / 7 / I \ 1 tI 9/81 in- „i \ I \. le _t ______., ______, .. _ _ TIT 41-1zr st —6 ci of 11 VS e'e hr
SE1251115A 2012-10-03 2012-10-03 Motor vehicles comprising an exhaust after-treatment device SE537805C2 (en)

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SE1251115A SE537805C2 (en) 2012-10-03 2012-10-03 Motor vehicles comprising an exhaust after-treatment device
PCT/SE2013/051088 WO2014055009A1 (en) 2012-10-03 2013-09-18 Exhaust gas aftertreatment system and motor vehicles comprising such an aftertreatment system
DE112013004327.0T DE112013004327T5 (en) 2012-10-03 2013-09-18 Exhaust after-treatment system and motor vehicles comprising such an after-treatment system

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JP7550677B2 (en) * 2021-02-25 2024-09-13 株式会社小松製作所 Dump truck

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US4671059A (en) * 1986-06-30 1987-06-09 Ontario Research Foundation Diesel particulate traps
DE4414904C1 (en) * 1994-04-28 1995-04-27 Daimler Benz Ag Temperature-controlled catalytic converter system for an internal combustion engine
DK57996A (en) * 1996-05-15 1997-11-16 Silentor As Muffler
JP2003328736A (en) * 2002-05-07 2003-11-19 Fuji Heavy Ind Ltd Engine exhaust gas purification device
WO2004063540A1 (en) * 2003-01-14 2004-07-29 Emitec Gesellschaft Für Emissionstechnologie Mbh Space-saving unit for post-treating exhaust gases provided with round-tripping imbricated flow areas having a gas input and output on the same side
FR2851293B1 (en) * 2003-02-13 2006-06-23 Faurecia Sys Echappement DEVICE FOR DEPOLLUTING EXHAUST GAS WITH REMOVABLE PROCESSING MEMBER
DE10329000A1 (en) * 2003-06-27 2005-01-27 Emitec Gesellschaft Für Emissionstechnologie Mbh Exhaust gas aftertreatment system with a countercurrent housing, as well as a corresponding procedure for exhaust aftertreatment
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