WO2014044571A1 - Montage de système d'échappement - Google Patents

Montage de système d'échappement Download PDF

Info

Publication number
WO2014044571A1
WO2014044571A1 PCT/EP2013/068637 EP2013068637W WO2014044571A1 WO 2014044571 A1 WO2014044571 A1 WO 2014044571A1 EP 2013068637 W EP2013068637 W EP 2013068637W WO 2014044571 A1 WO2014044571 A1 WO 2014044571A1
Authority
WO
WIPO (PCT)
Prior art keywords
guidance part
mounting plate
assembly
sensor
exhaust system
Prior art date
Application number
PCT/EP2013/068637
Other languages
English (en)
Inventor
Thorsten Capelle
Andreas Kleinhenz
Andreas MUEHLDORFER
Peter NEISS
Stefan TITZSCHKAU
Original Assignee
Agco International Gmbh
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
Priority claimed from GBGB1216777.1A external-priority patent/GB201216777D0/en
Priority claimed from GB201218433A external-priority patent/GB201218433D0/en
Application filed by Agco International Gmbh filed Critical Agco International Gmbh
Publication of WO2014044571A1 publication Critical patent/WO2014044571A1/fr

Links

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 ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • 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 ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/008—Mounting or arrangement of exhaust sensors in or on exhaust 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F01N13/1811—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration
    • F01N13/1822—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration for fixing exhaust pipes or devices to vehicle body
    • 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 ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/30—Removable or rechangeable blocks or cartridges, e.g. for filters
    • 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

Definitions

  • This invention relates to exhaust systems for vehicles, and in particular to such systems for agricultural and/or industrial tractors, which includes an exhaust gas treatment unit to reduce the level of gas contaminants to the legally required levels.
  • Diesel Particulate Filters may be included in exhaust lines to remove high percentages of diesel particulate matter or soot from exhaust gases. Compared to SCR- Catalysers, these emission treatment means must be regularly refreshed to remove accumulated ash. This may be done by burning fuel in the DPF to heat the filter to particulate combustion
  • WO 2010/069807 Al describes an exhaust system for an agricultural and/or industrial tractor having an internal combustion engine located in an engine compartment covered by an engine hood , the system including an exhaust gas treatment unit (which may include a DPF) located inside the engine compartment hood and having a main chamber fed by an inlet pipe which receives exhaust gases from the engine and an outlet pipe which passes treated gases into a final portion of the exhaust.
  • the treatment unit is installed above the engine and orientated generally transverse relative to the tractor so that the exhaust gases pass through the main chamber of the unit in a direction generally normal to the driving direction of the tractor.
  • the treatment unit consists of three major parts, namely a substrate container component and two lateral exhaust gas guidance parts including ports for connection with the exhaust gas ducts. The three parts are connected with clamps.
  • both exhaust gas guidance parts are disassembled and the substrate container is exchanged for reconditioning.
  • the substrate container typically has weight of about 35 kg so this part is very heavy compared to other parts inside the engine bay which have to be maintained.
  • this unit is installed (according to the arrangement of WO 2010/069807 Al perpendicular to the driving direction) at a height level of more than 2 metres from the ground which is hard to reach for assembly and service staff. Accordingly a safe method of assembly is required including access with a crane etc.
  • the position under bonnet requires a very narrow design to enable a narrow engine bonnet for improved view, and the weight of the unit requires a stiff connection to the chassis structure.
  • the unit is connected to the (heat insulating) wall between engine bay and cab.
  • a further requirement is to reduce tolerances within the assembly.
  • geometric freedom is already needed to mitigate thermal expansion, flexible connecting parts are provided. Due to the massive heat impact during regeneration (up to 550°C gas temperature), these parts only offer a limited position fault capability (rubber parts used in the intake system cannot be used due to temperature limits). The result is that additional position errors caused by assembly tolerances would make it impossible to connect the unit properly. Adjusting the system when assembled is restricted by limited access in the crowded engine bay.
  • a mounting assembly for a vehicle exhaust system component comprising:
  • a first exhaust gas guidance part having a first opening shaped to cooperate with an inlet or outlet of the component and a second opening connectable to an exhaust gas duct;
  • first guidance part or mounting plate has an external projection which is received in a corresponding opening in the mounting plate or first guidance part when the two are assembled to thereby guide the relative positioning of the component and first guidance part.
  • a mounting plate which term encompasses any structural arrangement supporting the component
  • cooperating projections/openings enabling the positive location of the or each exhaust gas guidance part provides a secure mounting for a component such as a DPF, with a mounting process less likely to suffer the time-consuming and costly delays occasioned by incorrect assembly.
  • the external projection comprises a first sensor mounted through an aperture in the first gas guidance part, the sensor having a sensing portion located within the gas guidance part and a connecting portion providing means for external connection to the sensing portion, the connecting portion being disposed on an outer surface of the gas guidance part and passing through a respective first aperture in the mounting plate when the mounting plate and gas guidance part are assembled.
  • This arrangement utilises the mounting plate to provide thermal shielding for the sensor wiring and connections which is of particular benefit during operation, especially during
  • Figure 1 shows an agricultural tractor fitted with an exhaust system including an exhaust gas treatment unit, with part of the engine compartment hood removed for clarity;
  • Figure 2 shows a perspective view of a gas treatment unit used in the exhaust system of Figure
  • Figure 3 shows a mounting assembly for the treatment unit of Figure 2;
  • Figure 4 shows an inverted view of part of the mounting assembly of Figure 3;
  • Figure 5 shows a sectional elevation through the mounting assembly and treatment unit of
  • Figure 6 shows a sectional elevation through a part of an alternate embodiment of mounting assembly and treatment unit of Figure 3 when assembled.
  • Figure 7 is an enlarged detail of part of Figure 6.
  • an agricultural tractor 1 has an engine 2 mounted in an engine
  • the engine has an exhaust which includes a turbo charger 3 and an engine braking throttle valve 4.
  • Exhaust section 5 is connected to a first exhaust gas guidance part providing an inlet of an exhaust gas treatment unit 10 which also has a second guidance part providing an outlet which is connected by exhaust section 5a to a generally vertically extending silencer 5b.
  • the exhaust gas treatment (DPF) unit 10 consists of three major parts, namely a substrate container 11 and two lateral air (exhaust gas) guidance parts 12, 13.
  • Each of the guidance parts 12, 13 has a first opening into which an end of the DPF unit 10 is received, and a second opening 12a, 13a providing a port for connection with the exhaust gas ducts.
  • the three parts are connected with clamps 14 (see also Figure 6).
  • the substrate container 11 of DPF unit 10 is, for cost reasons, a generally cylindrical non-customized part available in various diameters and lengths without any attachment means.
  • the DPF unit 10 is attached to supporting structures by using fastener straps 15 with threaded ends 15a which engage into bores of the supporting structure and are fixed by nuts 15b.
  • a mounting plate 22 of the support structure 20 is provided with centring means 21 providing a cradle portion with a contour of the same inner diameter as the substrate container 11.
  • the centring means 21 are welded to the mounting plate 22. This ensures that the relative position of the substrate container 11 and the support structure 20 is fixed in height (Arrow Y) and longitudinal direction (Arrow X).
  • the two lateral exhaust gas guidance parts 12, 13 are provided with mating means 16, 17 which engage with apertures 35 in the mounting plate 22 of the support structure 20 to positively locate the two guidance parts 12, 13 (and hence the substrate container 11).
  • the mating means 16, 17 are mating pins which are welded to the guidance parts 12, 13 during the existing welding procedure. These mating pins 16, 17 have different diameters to avoid rotated assembly (with the unit 10 rotated 180 degrees about the vertical Y axis).
  • the mating pins 16, 17 engage in respective bores or recesses 35a, 35b of the mounting plate 22 of the support structure 20 whereby bore 35b is shaped as a slot extending in the lateral Z direction to enable thermal extension.
  • the mating pins 16, 17 are shown as generally cylindrical, it will be readily appreciated that any cross-sectional form may be used provided that there is a corresponding engagement with the openings or recesses 35a, 35b of the mounting plate 22 or any other part of the support structure 20 to positively locate the guidance parts relative to the plate.
  • the two lateral air guidance parts 12, 13 may be provided with rectangular mating parts (shaped like fitted keys) which are welded to the face side. These mating parts may then engage with vertical slots in the side parts 23 of the support structure 20.
  • the arrangement may be reversed with projections from the mounting plate or any other part of the support structure 20 engaging recesses in the outer casing of the guidance parts.
  • both mounting plate and guidance part may have corresponding recesses with a separate mating part providing the projection extending into both recesses.
  • the rotation of the guidance parts 12, 13 relative to substrate container 11 /support structure 20 is also sufficiently limited.
  • the installation of the unit 10 may have differences caused by the size of the substrate container 11.
  • the substrate container 11 is liable to be larger so that the width Wl of the fully assembled DPF unit 10 (see Fig 5) is greater than the distance Dl between the side parts 23 of the support structure 20 which are connected to chassis.
  • the whole support structure 20 plus DPF unit 10 must be assembled or disassembled from the top.
  • the mating means 16, 17 are provided by first and second sensors 30, 31 which are fitted as part of a system to monitor and/or control performance of the exhaust system.
  • One or both of the sensors 30, 31 may be a temperature sensor measuring exhaust gas temperature needed for various controls (e.g. managing regeneration cycles).
  • One or both of the sensors 30, 31 may be a pressure sensor for absolute pressure: pressure in the exhaust is used e.g. for engine management.
  • One of the sensors 30, 31 may be a NOx Sensor: measuring nitrogen oxide in the exhaust gas is necessary to control urea injection in a selective catalytic reduction (SCR) catalyser installed in the exhaust line after the DPF.
  • SCR selective catalytic reduction
  • Each of the sensors 30, 31 comprises a sensing portion 30a, 31 a which, when the sensor is fitted, is located in the exhaust gas flow passage defined by the guidance portions 12, 13.
  • Each of the sensors 30, 31 additionally comprises a connection portion 30b, 31b by means of which the sensor is connected to external control and monitoring arrangements.
  • the sensor connection portions 30b, 31b will typically comprise wires or cables. These would be vulnerable to the heat from the exhaust system (particularly during regeneration) but are substantially protected in the present arrangement by virtue of the mounting plate providing a thermal barrier between the connection portions and the exhaust gas transmission components.
  • the sensors 30, 31 may be components of a pressure differential measuring means, with both sensing and connection portions being simple pipes which are connected to a pressure differential sensor used to determine a pressure differential between intake and outlet of the substrate container 11. The higher the differential is, the more particulates/ashes are trapped in the DPF (load condition). This is used to control active regeneration (by injecting and burning fuel).
  • a sensor 31 is mounted to the guidance portion 13 through a mounting collar 34 which is preferably welded to the upper surface of the portionl 3 (although other fixing methods such as press-fitting or gluing may be used).
  • the sensing portion 31a and connection portion 31 b j oin at an attachment portion 31c which has a threaded outer surface 31 d which engages with correspondingly threaded bore in the mounting collar 34 to fixedly mount the sensor 31 in the collar 34.
  • a hexagonal portion 31e is provided to enable the connection to be tightened.
  • the collar 34 is received in a corresponding aperture 35 in the mounting plate when the DPF unit 10 is mounted on the mounting plate 22.
  • the relative sizes of the collar and aperture is preferably such as to provide a clearance fit, giving positive positioning of the collar relative to the plate whilst still permitting extraction as the DPF unit is removed for replacement of the substrate container.
  • One of the mounting plate apertures is suitably shaped as a slot extending in the lateral Z direction to allow for thermal extension of the DPF unit in operation.
  • the mounting collars 34 of the two sensors may have different diameters or shapes to avoid rotated assembly (with the unit 10 rotated 180 degrees about the vertical Y axis).

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

L'invention porte sur un ensemble de montage pour une pièce de système d'échappement de véhicule, tel qu'un filtre à particules diesel, et qui comprend une plaque de montage, ayant des moyens servant à y fixer la pièce, et au moins une partie de guidage de gaz d'échappement ayant une première ouverture formée pour coopérer avec une entrée ou une sortie de la pièce et une seconde ouverture pouvant être raccordée à un conduit de gaz d'échappement. La partie de guidage ou la plaque de montage présente une saillie externe, qui est reçue dans une ouverture correspondante de la plaque de montage ou de la partie de guidage, lorsque les deux sont assemblées pour empêcher la rotation et le mouvement latéral des parties de guidage par rapport à la plaque de montage. Dans un premier mode de réalisation, la saillie externe est un capteur, tel qu'un capteur de température.
PCT/EP2013/068637 2012-09-20 2013-09-09 Montage de système d'échappement WO2014044571A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
GBGB1216777.1A GB201216777D0 (en) 2012-09-20 2012-09-20 Exhaust system mounting
GB1216777.1 2012-09-20
GB1218260.6 2012-10-11
GB201218260A GB201218260D0 (en) 2012-09-20 2012-10-11 Exhaust system mounting
GB1218433.9 2012-10-15
GB201218433A GB201218433D0 (en) 2012-10-15 2012-10-15 Exhaust system mounting

Publications (1)

Publication Number Publication Date
WO2014044571A1 true WO2014044571A1 (fr) 2014-03-27

Family

ID=50340597

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/068637 WO2014044571A1 (fr) 2012-09-20 2013-09-09 Montage de système d'échappement

Country Status (1)

Country Link
WO (1) WO2014044571A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104632336A (zh) * 2015-02-06 2015-05-20 安徽江淮汽车股份有限公司 一种后处理传感器安装结构
GB2531639A (en) * 2014-09-12 2016-04-27 Cummins Emission Solutions Inc Adjustable mounting system for aftertreatment or exhaust components
CN105986870A (zh) * 2015-03-23 2016-10-05 博萨尔排放控制系统公司 用于内燃机的排气系统的消声器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070169452A1 (en) * 2006-01-26 2007-07-26 Grimm David M Serviceable aligned exhaust aftertreatment assembly
FR2938214A3 (fr) * 2008-11-10 2010-05-14 Renault Sas Agencement pour la fixation par sangle d'un dispositif de depollution sur un bloc moteur associe
US20110120085A1 (en) * 2008-11-11 2011-05-26 Hitachi Construction Machinery Co., Ltd. Exhaust gas treatment device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070169452A1 (en) * 2006-01-26 2007-07-26 Grimm David M Serviceable aligned exhaust aftertreatment assembly
FR2938214A3 (fr) * 2008-11-10 2010-05-14 Renault Sas Agencement pour la fixation par sangle d'un dispositif de depollution sur un bloc moteur associe
US20110120085A1 (en) * 2008-11-11 2011-05-26 Hitachi Construction Machinery Co., Ltd. Exhaust gas treatment device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2531639A (en) * 2014-09-12 2016-04-27 Cummins Emission Solutions Inc Adjustable mounting system for aftertreatment or exhaust components
GB2531639B (en) * 2014-09-12 2020-12-09 Cummins Emission Solutions Inc Adjustable mounting system for aftertreatment or exhaust components
CN104632336A (zh) * 2015-02-06 2015-05-20 安徽江淮汽车股份有限公司 一种后处理传感器安装结构
CN105986870A (zh) * 2015-03-23 2016-10-05 博萨尔排放控制系统公司 用于内燃机的排气系统的消声器

Similar Documents

Publication Publication Date Title
US10487711B2 (en) Work vehicle
US8418448B2 (en) Exhaust gas treatment device for construction machine
EP2345802B1 (fr) Moteur doté d'un appareil de traitement des gaz d'émission
US8191668B2 (en) Mounting assembly for emissions control system
JP5324952B2 (ja) エンジン装置
KR101946095B1 (ko) 배기가스 정화 장치
US10161282B2 (en) Engine device
US20130213015A1 (en) Exhaust system thermal enclosure
US20140000745A1 (en) Adjustable support structure for an after-treatment component
US20110284308A1 (en) Exhaust Systems for Vehicles
WO2014030968A1 (fr) Structure de fixation de dispositif de post-traitement de gaz d'échappement dans un véhicule d'opérations agricoles
WO2014044571A1 (fr) Montage de système d'échappement
JP5658310B2 (ja) 作業車両搭載用のエンジン装置
JP5793169B2 (ja) 作業車両搭載用のエンジン装置
JP6033026B2 (ja) エンジン装置
JP2010185341A (ja) エンジン
JP2010106695A (ja) 作業車両搭載用のエンジン装置
WO2010090069A1 (fr) Dispositif de recirculation des gaz d'échappement et dispositif moteur le comprenant
WO2010092857A1 (fr) Dispositif de moteur
JP5892681B2 (ja) エキゾーストブレーキ装置の取り付け方法
JP5663424B2 (ja) 排気処理装置の製造方法
JP2016180410A (ja) 作業車両
JP5820901B2 (ja) Ｅｇｒ装置及びこれを備えた作業車両搭載用のエンジン装置
JP2010106694A (ja) 作業車両搭載用のエンジン装置
JP6181631B2 (ja) 作業車両搭載用のエンジン装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13762095

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13762095

Country of ref document: EP

Kind code of ref document: A1