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WO2012021651A1 - Aspiration de filtre à air et entraînement de ventilateur d'aspiration destinés à être utilisés lors d'un traitement d'échappement - Google Patents

Aspiration de filtre à air et entraînement de ventilateur d'aspiration destinés à être utilisés lors d'un traitement d'échappement Download PDF

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Publication number
WO2012021651A1
WO2012021651A1 PCT/US2011/047293 US2011047293W WO2012021651A1 WO 2012021651 A1 WO2012021651 A1 WO 2012021651A1 US 2011047293 W US2011047293 W US 2011047293W WO 2012021651 A1 WO2012021651 A1 WO 2012021651A1
Authority
WO
WIPO (PCT)
Prior art keywords
pulley
aspiration
air
particles
engine
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/US2011/047293
Other languages
English (en)
Inventor
Rex Schertz
John Anderson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AGCO Corp
Original Assignee
AGCO Corp
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 AGCO Corp filed Critical AGCO Corp
Publication of WO2012021651A1 publication Critical patent/WO2012021651A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/02—Air cleaners
    • F02M35/08—Air cleaners with means for removing dust, particles or liquids from cleaners; with means for indicating clogging; with by-pass means; Regeneration of cleaners
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion
    • F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
    • F01N3/208—Control of selective catalytic reduction [SCR], e.g. by adjusting the dosing of reducing agent
    • 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
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present disclosure is generally related to diesel engines and, more particularly, is related to a system and method for aspirating an air filter assembly of a diesel engine, which uses exhaust treatment.
  • Utility vehicles such as agricultural tractors, and plant machinery are often required to work in dusty environments.
  • dust entering the air intake of an internal combustion engine of such a vehicle or machine it is known to filter intake air upstream of the engine.
  • a typical air intake system includes, in airflow order, a pre-filter and a main filter.
  • the pre-filter removes larger dust particles from the intake air, and then the main filter removes smaller particles. Without the pre-filter, the main filter tends to clog in an unacceptably short time.
  • the particles collected by the pre-filter are typically removed by scavenging vacuum pressure that is created from engine exhaust.
  • scavenging vacuum pressure that is created from engine exhaust.
  • reliance on an engine exhaust system to provide such vacuum pressure can be problematic due to various factors, such as structural complexity and back pressure being too high to accommodate additional requirements.
  • FIG. 1 is a schematic diagram of an example embodiment of a tractor with a diesel engine assembly.
  • FIG. 2 is a schematic diagram of an example embodiment of an exhaust treatment system.
  • FIG. 3 is a perspective view of an example embodiment of an intake treatment system.
  • FIG. 4 is a flow chart depicting an example embodiment of a method for operating a diesel engine.
  • FIG. 5 is a perspective view of another example embodiment of a diesel engine assembly.
  • FIG. 6 is a perspective view showing detail of an example embodiment of an aspiration fan drive.
  • FIG. 7 is a perspective view of selected components of an example embodiment of an aspiration fan drive.
  • FIG. 8 is an assembly view of an example embodiment of an aspiration fan drive.
  • FIG. 9 is a flow chart depicting another example embodiment of a method for operating a diesel engine.
  • An example embodiment of a system includes a diesel engine with an intake and an exhaust.
  • An exhaust treatment system communicates with the exhaust and treats combustion products of the engine.
  • An intake treatment system communicates with the intake and includes an air filter assembly that removes particles from a flow of air that is provided to the engine.
  • An aspiration fan assembly includes a fan mechanically driven by the engine to produce scavenging vacuum pressure, which is applied to the air filter assembly to remove particles collected in the air filter assembly.
  • scavenging vacuum pressure can be provided for aspirating an air filter of a diesel engine that implements exhaust treatment (e.g., Selective Catalytic Reduction (SCR)).
  • SCR Selective Catalytic Reduction
  • this is accomplished by an idler pulley that engages a drive belt of the engine, and which imparts rotational speed to a fan that produces the scavenging vacuum pressure.
  • rotational speeds of the fan in excess of 8,000 RPM can be achieved.
  • a tractor 100 includes an engine compartment 102, a cab
  • a diesel engine assembly 1 10 is housed within engine compartment 102, and includes intake treatment system 1 12, engine 1 14 and exhaust treatment system 1 16.
  • Intake treatment system 1 12 is positioned along the flow path of intake 1 18, which provides a flow of air to engine 1 14.
  • Exhaust treatment system 1 16 is positioned along the flow path of exhaust 120, which directs combustion products from engine 1 14.
  • intake treatment system 1 12 removes particles (e.g., dust) from a flow of air that is provided to engine 1 14 via intake 1 18 to facilitate combustion.
  • particles e.g., dust
  • combustion products are directed to exhaust treatment system 1 16, which performs a catalytic reaction with the combustion products to reduce undesirable emissions.
  • exhaust treatment system 1 16 is shown to incorporate a catalyst 122, a controller 124 and a supply 126 of additives.
  • catalyst 122 includes an SCR catalyst positioned within exhaust 120 along the flow path of the combustion products.
  • the combustion products are represented by arrow A.
  • exhaust treatment system 1 16 functions as means for performing SCR on combustion products of a diesel engine.
  • An injector 128 is fluidicly coupled to supply 126.
  • Injector 128 selectively dispenses additives (e.g., DEF) into exhaust 120, with the dispensed additives being represented by arrow B.
  • the additives are dispensed within exhaust 120 and upstream of catalyst 122 to stimulate a reaction that is known to reduce various emissions such as NOx.
  • Dispensing of the additives is performed responsive to signals from controller 124, which monitors various system parameters.
  • controller 124 can monitor exhaust temperature via sensor 130. Remaining products, represented by arrow C, are directed to atmosphere with exhaust 120.
  • FIG. 3 depicts intake treatment system 1 12 (in greater detail), which does not rely on engine exhaust for producing scavenging vacuum pressure.
  • intake treatment system 1 12 communicates with intake 1 18.
  • intake treatment system 1 12 includes an air filter assembly 132 that removes particles from an intake flow of air represented by arrow D.
  • Air filter assembly 132 then provides a flow of filtered air (represented by arrow E) to engine 1 14 via intake 1 18.
  • air filter assembly 132 functions as means for collecting particles from an intake flow of air for the diesel engine.
  • Aspiration fan assembly 134 also is depicted in FIG. 3.
  • Aspiration fan assembly 134 incorporates a fan 136 that is mechanically driven by engine 1 14 (not shown in FIG. 3) to produce scavenging vacuum pressure.
  • the scavenging vacuum pressure is applied to air filter assembly 132 by aspiration conduit 138 to remove particles collected in air filter assembly 132 from the intake flow of air. That is, the particles are drawn away from air filter assembly 132, through aspiration conduit 138, and toward fan 136.
  • aspiration fan assembly 134 functions as means for removing the particles collected using scavenging vacuum pressure and without adding exhaust restriction to the system.
  • FIG. 4 An example embodiment of a method for operating a diesel engine is depicted in FIG. 4 that includes collecting particles from an intake flow of air (block 140). In block 142, the particles that were collected are removed using scavenging vacuum pressure and without adding exhaust restriction. Then, as shown in block 144, combustion products of the diesel engine are treated.
  • SCR can be used.
  • FIG. 5 is a perspective view of another example embodiment of a diesel engine assembly 1 10 that includes an intake treatment system 1 12, an engine 1 14 and an exhaust treatment system 1 16.
  • Intake treatment system 1 12 is positioned along the flow path of an intake 1 18.
  • Exhaust treatment system 1 16 is positioned along the flow path of exhaust 120 and includes an SCR catalyst 122 for reacting with combustion products.
  • Intake treatment system 1 12 of FIG. 5 incorporates an air filter assembly 132 that removes particles from an intake flow of air.
  • air filter assembly 132 includes a pre-filter 146 positioned upstream of a main filter 148.
  • Pre-filter 146 removes particles that are drawn into air filter assembly 132.
  • Pre-filter 146 collects these particles until scavenged as will be described later.
  • pre-filter 146 functions as means for pre- filtering the flow of air.
  • Main filter 148 receives pre-filtered air from pre-filter 146 and removes smaller particles from the air flow. Air filter assembly 132 then provides a flow of filtered air to engine 1 14 via intake 1 18. Thus, main filter 148 functions as means for filtering the flow of air.
  • Aspiration fan assembly 134 incorporates a fan (not shown in FIG. 5) that is mechanically driven by engine 1 14 to produce scavenging vacuum pressure.
  • the scavenging vacuum pressure is applied to air filter assembly 132 by aspiration conduit 138 to remove particles collected in air filter assembly 132.
  • aspiration conduit 138 applies the scavenging vacuum pressure to pre-filter 146 to draw particles collected by the pre-filter into the aspiration conduit such that efficiency of air filter assembly 132 is maintained.
  • engine 1 14 includes various accessories, such as an alternator 150 that is driven by an engine drive belt 152.
  • engine drive belt 152 engages about and extends between a first pulley 154, which is coupled to alternator 150, and a second pulley 156, which is a drive pulley.
  • Aspiration fan assembly 134 includes a compound idler pulley 158, an outer surface of which engages an outer surface of engine drive belt 152 to rotate compound idler pulley 158.
  • compound idler pulley 158 includes a first pulley stage 160 and a second pulley stage 162, with the first pulley stage being positioned to engage engine drive belt 152.
  • Second pulley stage 162 drives a fan 164 (FIG. 7) of aspiration fan assembly 134 responsive to rotation of first pulley stage 160.
  • first pulley stage 160 and second pulley stage 162 are coaxial and form an integral component. So configured, rotation of first pulley stage 160 results in rotation of second pulley stage 162. Additionally, second pulley stage 162 exhibits a longer radius (R 2 ) than the radius (Ri) of first pulley stage 160 such that R 2 >Ri . Thus, compound idler pulley 160 functions as a means for converting rotational motion to higher speed rotational motion.
  • fan pulley 166 and aspiration drive belt 168 are depicted in FIG. 7.
  • Aspiration drive belt 168 engages about and extends between fan pulley 166 and second pulley stage 162.
  • second pulley stage 162 exhibits a longer radius (R 2 ) than the radius (R 3 ) of fan pulley 166 such that R 2 >R3.
  • second pulley stage 162 exhibits a longer radius (R 2 ) than the radius (Ri) of first pulley stage 160, which also exhibits a longer radius than the radius (R 3 ) of fan pulley 166 (i.e., R 2 >Ri>R 3 ).
  • aspiration fan assembly 134 is capable of driving fan 164 at speeds in excess of 8,000 RPM.
  • fan pulley 166 is also capable of functioning as a means for converting rotational motion to higher speed rotational motion.
  • compound idler pulley 158 is secured to an engine mount 170 by a bolt 172 that passes, in sequence, through spacer 174, compound idler pulley 158, bearing 176, retaining ring 178 and spacer 180.
  • fan support 182 that mounts stator 184, which supports axle 186 (FIG. 7) of fan 164.
  • Stator 184 also secures fan 164 to housing 188, which surrounds fan 164 and serves as a connector for aspiration conduit 138.
  • An evacuation port 190 is located at base of aspiration conduit 138 adjacent to housing 188 for expelling particles scavenged from pre-filter 146.
  • FIG. 9 is a flow chart depicting another example embodiment of a method for operating a diesel engine that includes pre-filtering intake air to remove larger particles (block 190), and then filtering the air to remove smaller particles (block 192).
  • block 194 mechanically drive a fan to produce the scavenging vacuum pressure, which is then applied to remove particles that were collected during pre-filtering (block 196).
  • the fan is mechanically driven in a manner that does not add exhaust restriction.
  • SCR is performed on combustion products of the diesel engine.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

Selon un mode de réalisation de la présente invention, un système comprend : un moteur diesel qui présente une admission et un échappement ; un système de traitement d'échappement qui communique avec l'échappement et qui permet de traiter les produits de combustion du moteur ; un système de traitement d'admission qui communique avec l'admission et qui présente un ensemble filtre à air conçu pour ôter des particules d'un écoulement d'air ainsi que pour diriger l'écoulement d'air vers le moteur ; et un ensemble ventilateur d'aspiration qui comporte un ventilateur entraîné mécaniquement par le moteur afin de créer une pression à vide de balayage, ledit ensemble ventilateur d'aspiration servant à appliquer la pression à vide de balayage sur l'ensemble filtre à air en vue d'ôter les particules recueillies dans l'ensemble filtre à air.
PCT/US2011/047293 2010-08-11 2011-08-10 Aspiration de filtre à air et entraînement de ventilateur d'aspiration destinés à être utilisés lors d'un traitement d'échappement Ceased WO2012021651A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US37278010P 2010-08-11 2010-08-11
US61/372,780 2010-08-11
US13/206,758 2011-08-10
US13/206,758 US20120036843A1 (en) 2010-08-11 2011-08-10 Air filter aspiration and aspiration fan drive for use with exhaust treatment
US13/206,799 2011-08-10
US13/206,799 US20120036833A1 (en) 2010-08-11 2011-08-10 Scavenging Vacuum Pressure Provisioning with Exhaust Treatment

Publications (1)

Publication Number Publication Date
WO2012021651A1 true WO2012021651A1 (fr) 2012-02-16

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PCT/US2011/047293 Ceased WO2012021651A1 (fr) 2010-08-11 2011-08-10 Aspiration de filtre à air et entraînement de ventilateur d'aspiration destinés à être utilisés lors d'un traitement d'échappement

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US (2) US20120036843A1 (fr)
WO (1) WO2012021651A1 (fr)

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GB2466277A (en) * 2008-12-19 2010-06-23 Agco Gmbh Exhaust systems for vehicles
JP2012171596A (ja) * 2011-02-24 2012-09-10 Hitachi Constr Mach Co Ltd 建設機械
US8590650B2 (en) * 2011-04-01 2013-11-26 Agco Corporation Cooling package assembly for work vehicles
US9605629B2 (en) * 2014-02-14 2017-03-28 Cnh Industrial America Llc Under-hood mounting configuration for a control unit of a work vehicle
US9222448B2 (en) 2014-02-14 2015-12-29 Cnh Industrial America Llc Air intake system for a work vehicle with improved fan aspiration
US9869190B2 (en) 2014-05-30 2018-01-16 General Electric Company Variable-pitch rotor with remote counterweights
US10072510B2 (en) 2014-11-21 2018-09-11 General Electric Company Variable pitch fan for gas turbine engine and method of assembling the same
JP6492922B2 (ja) 2015-04-20 2019-04-03 井関農機株式会社 トラクタ
JP6492921B2 (ja) 2015-04-20 2019-04-03 井関農機株式会社 トラクタ
US10100653B2 (en) 2015-10-08 2018-10-16 General Electric Company Variable pitch fan blade retention system
US10543443B2 (en) * 2017-12-13 2020-01-28 Caterpillar Inc. Air intake system for engines
WO2021173413A1 (fr) 2020-02-28 2021-09-02 Cummins Filtration Inc. Pompe d'évacuation de matière particulaire
US11674435B2 (en) 2021-06-29 2023-06-13 General Electric Company Levered counterweight feathering system
US11795964B2 (en) 2021-07-16 2023-10-24 General Electric Company Levered counterweight feathering system

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DE10128788A1 (de) * 2001-06-13 2002-12-19 Stihl Maschf Andreas Ansaugvorrichtung für Verbrennungsluft
EP1731749A1 (fr) * 2005-06-09 2006-12-13 Mann+Hummel Gmbh Système de distribution de poussière
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WO2009141247A1 (fr) * 2008-05-20 2009-11-26 Agco Sa Système d’admission d’air
WO2010075345A2 (fr) * 2008-12-24 2010-07-01 Basf Catalysts Llc Systèmes et procédés de traitement d'émissions employant un filtre rcs catalysé et un catalyseur rcs aval

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Publication number Priority date Publication date Assignee Title
US20020179352A1 (en) * 2001-05-31 2002-12-05 Keen Eric A. Vacuum pump aspirator for work vehicle pre-cleaner
DE10128788A1 (de) * 2001-06-13 2002-12-19 Stihl Maschf Andreas Ansaugvorrichtung für Verbrennungsluft
EP1731749A1 (fr) * 2005-06-09 2006-12-13 Mann+Hummel Gmbh Système de distribution de poussière
US20090266327A1 (en) * 2008-03-11 2009-10-29 Yamaha Hatsudoki Kabushiki Kaisha Vehicle with secondary air supply passage
WO2009141247A1 (fr) * 2008-05-20 2009-11-26 Agco Sa Système d’admission d’air
WO2010075345A2 (fr) * 2008-12-24 2010-07-01 Basf Catalysts Llc Systèmes et procédés de traitement d'émissions employant un filtre rcs catalysé et un catalyseur rcs aval

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Publication number Publication date
US20120036843A1 (en) 2012-02-16
US20120036833A1 (en) 2012-02-16

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