EP1213468A2 - Système de recyclage de gaz d'échappement avec une vanne de contre-pression dans le collecteur d'échappement - Google Patents

Système de recyclage de gaz d'échappement avec une vanne de contre-pression dans le collecteur d'échappement Download PDF

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Publication number
EP1213468A2
EP1213468A2 EP01125970A EP01125970A EP1213468A2 EP 1213468 A2 EP1213468 A2 EP 1213468A2 EP 01125970 A EP01125970 A EP 01125970A EP 01125970 A EP01125970 A EP 01125970A EP 1213468 A2 EP1213468 A2 EP 1213468A2
Authority
EP
European Patent Office
Prior art keywords
exhaust
exhaust gas
egr
gas recirculation
scroll element
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.)
Withdrawn
Application number
EP01125970A
Other languages
German (de)
English (en)
Other versions
EP1213468A3 (fr
Inventor
Keith E. Caterpillar Inc. Lawrence
David A. Caterpillar Inc. Pierpont
Carol A. Caterpillar Inc. Rathman
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.)
Caterpillar Inc
Original Assignee
Caterpillar Inc
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 Caterpillar Inc filed Critical Caterpillar Inc
Publication of EP1213468A2 publication Critical patent/EP1213468A2/fr
Publication of EP1213468A3 publication Critical patent/EP1213468A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/04—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning exhaust conduits
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/09—Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine
    • F02M26/10—Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine having means to increase the pressure difference between the exhaust and intake system, e.g. venturis, variable geometry turbines, check valves using pressure pulsations or throttles in the air intake or exhaust system
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F02M26/16—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system with EGR valves located at or near the connection to the exhaust system
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient valves
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/71—Multi-way valves
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/51—EGR valves combined with other devices, e.g. with intake valves or compressors

Definitions

  • the present invention relates generally to internal combustion engines, and more particularly to a valve-controlled system for developing or generating sufficient back pressure within the engine exhaust sys-tem so as to force or drive engine exhaust gas toward the engine inlet manifold during exhaust gas recirculation (EGR) operative modes.
  • EGR exhaust gas recirculation
  • a back pressure valve assembly is utilized within the exhaust gas recirculation (EGR) system such that the exhaust gases from, for example, the front bank of three engine cylinders and its exhaust manifold are routed into the exhaust gas recirculation (EGR) loop conduit, while the exhaust gases from the rear bank of engine cylinders and its exhaust manifold are routed to the turbine stage of the engine turbocompressor.
  • EGR exhaust gas recirculation
  • EGR exhaust gas recirculation
  • an exhaust gas recirculation (EGR) system is used with an internal combustion engine.
  • the engine has an exhaust gas recirculation (EGR) conduit interposed an exhaust manifold structure of all of the cylinders of the engine and an atmospheric exhaust structure.
  • EGR exhaust gas recirculation
  • a valve mechanism is disposed at a juncture defined between said exhaust gas recirculation (EGR) conduit and the atmospheric exhaust structure and is movable between a fully closed position at which an entrance to the exhaust gas recirculation (EGR) conduit is blocked and all exhaust gases from all of the cylinders of the engine pass to atmospheric exhaust through the atmospheric exhaust structure, and a fully opened position at which the valve mechanism opens the entrance to the exhaust gas recirculation (EGR) conduit and partially occludes an entrance portion of the atmospheric exhaust structure such that a sufficiently large back pressure is developed with respect to the atmospheric exhaust structure such that exhaust gases from all of the cylinders of the engine are forced through the exhaust gas recirculation (EGR) conduit.
  • EGR exhaust gas recirculation
  • an exhaust gas recirculation (EGR) system is used with an internal combustion engine having a plurality of cylinders.
  • the exhaust gas recirculation system has an intake manifold connected to the plurality of cylinders of the internal combustion engine for introducing air into the plurality of cylinders of the internal combustion engine.
  • An exhaust manifold structure is connected to the plurality of cylinders of the internal combustion engine for conducting exhaust gases out from the cylinders of the internal combustion engine.
  • An exhaust gas recirculation (EGR) conduit is interposed the exhaust manifold structure of all the plurality of cylinders of the internal combustion engine and atmospheric exhaust structure.
  • a valve mechanism is disposed at a juncture defined between the exhaust gas recirculation (EGR) conduit and the atmospheric exhaust structure.
  • the valve mechanism is movable between a fully closed position at which an entrance to the exhaust gas recirculation (EGR) conduit is blocked and all exhaust gases from all of the plurality of cylinders of the internal combustion engine pass to atmospheric exhaust through the atmospheric exhaust structure, and a fully opened position at which the valve mechanism opens the entrance to the exhaust gas recirculation (EGR) conduit and partially occludes an entrance portion of the atmospheric exhaust structure such that a sufficiently large back pressure is developed with respect to the atmospheric exhaust structure such that exhaust gases from all of the plurality of cylinders of the internal combustion engine are forced through the exhaust gas recirculation (EGR) conduit.
  • an exhaust gas recirculation (EGR) loop utilized in conjunction with an internal combustion engine, and having incorporated therein the new and improved exhaust gas manifold back pressure valve assembly constructed in accordance with the principles and teachings of the present invention, is disclosed and is generally indicated by the reference character 10.
  • EGR exhaust gas recirculation
  • the internal combustion engine and associated exhaust gas recirculation (EGR) loop 10 comprises an intake manifold 12 fluidically connected to, for example, the six cylinders 14 of the engine, and a pair of exhaust manifolds 16,18 respectively fluidically connected to front and rear banks of the cylinders 14.
  • EGR exhaust gas recirculation
  • the pair of exhaust manifolds 16,18 are in turn respectively fluidically connected to an exhaust gas recirculation loop conduit 20 which leads to an exhaust gas recirculation (EGR) cooler 22, and to a turbine stage 24 of a turbocompressor 26 whereby the turbine stage 24 of the turbocompressor 26 drives a compressor stage 28 of the turbocompressor 26 such that intake air is driven toward the engine intake manifold 12 through means of an intake air conduit 30 and an aftercooler 32, while the exhaust gases are ultimately exhausted to atmosphere.
  • Intake air and recirculated exhaust gas from conduits 20 and 30 are mixed together within a mixer 34 before being transmitted into the engine intake manifold 12.
  • an exhaust gas recirculation (EGR) back pressure valve assembly developed in accordance with the teachings and principles of the present invention, is generally indicated by the reference character 36.
  • the valve assembly 36 is mounted upon or within the inlet or upstream end portion of the scroll element 37 of the turbine stage 24 of the turbocompressor 26 and is in effect disposed at the junction of the exhaust gas recirculation (EGR) loop conduit 20 and the turbine stage 24 of the turbocompressor 26 so as to selectively route exhaust gas from both the front and rear banks of engine cylinders 14 and exhaust gas manifolds 16,18 into exhaust gas recirculation (EGR) loop conduit 20, or to the turbine stage 24 of turbocompressor 26, depending upon the disposition of the valve element of the valve assembly 36.
  • EGR exhaust gas recirculation
  • the exhaust gas recirculation (EGR) back pressure valve assembly 36 is seen to comprise a substantially T-shaped manifold section 38 which includes a first, horizontally disposed or extending inlet port or tubular conduit section 40 through which exhaust gases from first and second ones of the six cylinders are conducted, and a second, horizontally disposed inlet port or tubular conduit section 42, disposed substantially perpendicular to the first inlet port or conduit section 40, through which exhaust gas from a third one of the six cylinders is conducted.
  • a third, horizontally disposed inlet port or conduit 44 extends parallel to the second inlet port or conduit 42 so as to provide exhaust gas from a fourth one of the six cylinders to the exhaust gas recirculation (EGR) back pressure valve manifold section 38, and a fourth, horizontally disposed inlet port or conduit 46, disposed substantially coaxially with respect to the first inlet port or conduit 40 and substantially perpendicular to the third inlet port or conduit 44, is provided for conducting exhaust gases from fifth and sixth ones of the six engine cylinders into the exhaust gas recirculation (EGR) back pressure valve assembly manifold section 38.
  • EGR exhaust gas recirculation
  • the underside portion of the exhaust gas recirculation (EGR) back pressure valve assembly manifold section 38 also includes an exhaust section 48 for conducting exhaust gases from the front bank of cylinders, that is, from the first, second, and third cylinders, and from the rear bank of cylinders, that is, from the fourth, fifth, and sixth cylinders, into the turbine stage 24 of the turbocompressor 26 through means of the scroll element 37 of the turbine stage 24 of the turbocompressor 26.
  • EGR exhaust gas recirculation
  • the flow of the exhaust gases from both the front bank of engine cylinders, that is, from the first, second, and third cylinders, and the rear bank of engine cylinders, that is, from the fourth, fifth, and sixth cylinders can be variably modulated or adjustably controlled such that sufficient back pressure is developed within the system during exhaust gas recirculation (EGR) operative modes.
  • EGR exhaust gas recirculation
  • the upstream or inlet end portion 50 of the scroll element 37 of the turbine stage 24 of the turbocompressor 26 is provided with a peripheral flanged portion 52 to which the exhaust section 48 of the exhaust gas recirculation (EGR) back pressure valve assembly manifold section 38 is fixedly attached by means of, for example, a plurality of bolt fasteners 49 threadedly secured within threaded bores 51 defined within the flanged portion 52 of scroll element 37.
  • EGR exhaust gas recirculation
  • a similar flanged portion 54 is provided upon a side wall portion 56 of the upstream or inlet end portion 50 of the scroll element 37 of the turbine stage 24 of the turbocompressor 26, and the flanged portion 54 is seen to surround an exhaust aperture or port 58 defined within the side wall portion 56 of the upstream or inlet end portion 50 of the scroll element 37.
  • a valve subassembly is generally indicated by the reference character 60 and is adapted to be fixedly secured to the upstream or inlet end portion 50 of the scroll element 37. More particularly, the upstream or inlet end portion 50 of the scroll element 37 is provided with a plurality of bosses 62 within which a plurality of internally threaded bores 64 are provided, and a pair of similar internally threaded bores 64 are defined within peripheral flanged portion 52.
  • the valve subassembly 60 is seen to comprise a substantially rectangularly configured cast base portion 66, for mating with the flanged portion 54 of the scroll element 37, and accordingly, a plurality of bores 68 are provided within cast base portion 66.
  • a plurality of threaded bolts 70 are thus adapted to pass through the bores 68 of the cast base portion 66 and be threadedly engaged within the threaded bores 64 of the flanged portions 52,54 of the scroll element 37 so as to secure valve subassembly 60 to the upstream or inlet end portion 50 of the scroll element 37 as best seen in FIGURE 2.
  • a peripheral gasket 72 is mounted upon the cast base portion 66 of the valve subassembly 60 so as to be inter-posed between the cast base portion 66 and the flanged portion 54 of scroll element 37 when the valve subassembly 60 is secured to scroll element 37 by means of the bolts 70.
  • the cast base portion 66 includes an integrally formed upwardly projecting center portion 74 which is surrounded by means of the gasket member 72 as best seen in FIGURES 4 and 7, and the upwardly projecting center portion 74 of the valve subassembly 60 is adapted to be disposed within the exhaust aperture or port 58 defined within the upstream or inlet end of the scroll member 37 of the turbine stage 24 of the turbocompressor 26 when the valve subassembly 60 is secured to the scroll element 37 as shown in FIGURE 2 and as can be clearly seen in FIGURE 5 so as to serve, as will be apparent hereinafter, as a valve seat.
  • An exhaust aperture or port 76 is defined within the upwardly projecting center portion 74 and also extends through the cast base portion 66 whereby, when the valve subassembly 60 is secured to the scroll element 37 as shown in FIGURES 2 and 5, exhaust aperture or port 76 is fluidically connected to the exhaust port or aperture 58 defined within the upstream or inlet end portion of the scroll member 37.
  • upstream end flanged portion 52 of scroll member 37 defines an upstream inlet aperture or port 78, and cast base portion 66 has integrally formed therewith an exhaust gas recirculation (EGR) outlet scoop 80.
  • Exhaust gas recirculation (EGR) outlet scoop 80 is fluidically connected at its upstream end to the exhaust aperture or port 76 defined within the cast base portion 66 and is fluidically connected at its downstream end to the exhaust gas recirculation (EGR) loop conduit 20.
  • exhaust gases from the engine exhaust gas manifolds 16,18 can be routed to the exhaust gas recirculation (EGR) loop conduit 20 through means of the exhaust gas manifold back pressure valve assembly 10.
  • valve subassembly 60 In order to control the flow of the exhaust gases from the engine exhaust gas manifolds 16,18 either into the scroll member 37 of the turbine stage 24 of the turbocompressor 26, or into the exhaust gas recirculation (EGR) loop 20 through means of the exhaust gas recirculation (EGR) outlet scoop 80, the valve subassembly 60 further comprises a paddle valve member 82, as best seen in FIGURES 4-7, which is adapted to be pivotally mounted upon the cast base portion 66.
  • the paddle valve member 82 is adapted to be pivotally movable between an opened position at which the paddle valve member 82 will partially occlude the upstream entrance portion 84 of the scroll element 37 of the turbine stage 24 of the turbocompressor 26 when exhaust gas recirculation (EGR) of exhaust gases from the engine exhaust gas manifolds 16,18 through exhaust gas recirculation (EGR) outlet scoop 80 and exhaust gas recirculation (EGR) loop 20 is desired and being conducted, and a closed position at which the paddle valve member 82 will cover the exhaust aperture or port 76 defined within the cast base portion 66 such that all exhaust gases from the engine exhaust gas manifolds 16,18 are conducted directly through the scroll element 37 of the turbine stage 24 of the turbocompressor 26.
  • EGR exhaust gas recirculation
  • EGR exhaust gas recirculation
  • the cast base portion 66 is provided with a transversely oriented blind bore 86 within which a pair of transversely spaced bearing members 88,89 are disposed.
  • a valve actuating shaft 90 is inserted within the blind bore 86 such that an innermost end portion 92 thereof and an intermediate portion 94 thereof, which is transversely spaced from the inner end portion 92, are respectively disposed within the bearing members 88,89, while the end 96 of the shaft 90 which is disposed opposite the innermost end portion 92 thereof projects outwardly from the cast base portion 66 so as to be operatively connected to a suitable valve actuator, not shown.
  • An axially central portion 98 of the valve actuating shaft 90 is interposed between the innermost end portion 92 of the shaft 90 and the intermediate portion 94 of the shaft 90, and is adapted to have the paddle valve member 82 mounted thereon. More particularly, as best seen in FIGURE 6, the paddle valve member 82 further comprises a hinge portion 100 integrally formed therewith, and the hinge portion 100 is provided with a through bore 102 for accommodating the actuating shaft 90.
  • the internal peripheral wall of the hinge portion 100 which defines the upper portion of the through bore 102 within the hinge portion 100 of the paddle valve member 82 is seen to have a flattened configuration as at 104, and the upper external peripheral surface portion of the axially central portion 98 of the actuating shaft 90 is likewise provided with a flattened configuration as at 106 such that when the actuating shaft 90 is inserted within the through bore 102 of the hinge portion 100 of the paddle valve member 82, the shaft 90 and hinge portion 100 are effectively keyed together such that relative rotation therebetween is prevented.
  • the two members could be splined together.
  • An upstanding wall portion 108 is formed at the end of flattened portion 106 which is opposite innermost end portion 92 of the shaft 90 so as to engage an external side wall portion 110 of the hinge portion 100 of the paddle valve 82 and thereby properly axially seat the actuating shaft 90 within the through bore 102 of the hinge portion 100 of the paddle valve member 82.
  • the hinge portion 100 of the paddle valve member 82 is also provided with a transversely extending internally threaded blind bore 112 through which a cap screw 114 is inserted, as best seen in FIGURE 7, such that the innermost end of the cap screw 114 is seated upon the flattened portion 106 of the actuating shaft 90 so as to retain the paddle valve member 82 and the actuating shaft 90 assembled together.
  • the cast base portion 66 is also provided with a recessed socket portion 116, as best seen in FIGURE 7, for accommodating the hinge portion 100 of the paddle valve member 82 in order to permit or facilitate the pivotal movements of the paddle valve member 82.
  • the paddle valve member 82 is also seen to be centered within socket portion 116 by means of inside or internally facing surfaces of the bearing members 88,89.
  • EGR exhaust gas recirculation
  • the actuator When partial recirculation of the engine exhaust gases is to take place, the actuator, not shown, is actuated such that the shaft 90 is rotated or pivoted and the paddle valve member 82 is likewise rotated or pivoted such that the paddle valve member 82 is now disengaged from the valve seat 74 whereby a partial back pressure is developed within the upstream portion 84 of the scroll element 37 such that a predetermined portion of the exhaust gases from the engine cylinders is in effect partially deflected through exhaust port 76 of the cast base portion 66, through exhaust outlet scoop 80, and into exhaust gas recirculation (EGR) loop 20 toward the EGR cooler 22 while the remaining portion of the exhaust gases from the engine cylinders is con-ducted through the scroll element 37 toward the turbine stage 24 of the turbocompressor 26.
  • EGR exhaust gas recirculation
  • EGR partial exhaust gas recirculation
  • the actuator not shown, can of course be programmed or controlled so as to achieve any one of a substantially infinite number of pivotal or rotational states so as to in turn cause a substantially infinite number of partial exhaust gas recirculation (EGR) states.
  • such occlusion serves not only to physically occlude the upstream portion 84 of the scroll element 37 but in addition, develops a significant back pressure with respect to the scroll element 37 whereby a significant portion of the exhaust gases from the engine cylinders is effectively forced to be conducted from inlet aperture or port 78 of scroll element 37, through elongated exhaust port 74 of the valve sleeve member 64, through exhaust port 58, through exhaust aperture or port 76, and out through exhaust outlet scoop 80 and into the exhaust gas recirculation (EGR) loop 20 and toward the EGR cooler 22 while a remaining portion of the exhaust gases from the engine cylinders is also conducted through the aforenoted annular space defined between the outer peripheral edge portion 117 of the paddle valve member 82 and the inner peripheral surface portion 118 of the scroll element 37 so as to be exhausted into the scroll element 37 and the turbine stage 24 of the turbocompressor 26.
  • EGR exhaust gas recirculation
  • EGR exhaust gas re-circulation
  • the new and improved exhaust gas recirculation (EGR) back pressure valve assembly is not simply an ON-OFF type valve assembly, but to the contrary, as a result of the provision of a suitable actuator, which may be, for example, an electrohydraulic actuator, a substantially infinite number of open positions of the paddle valve member, for achieving a substantially infinite number of degrees of occlusion of the upstream portion of the scroll element of the turbine stage of the turbo compressor, and therefore a substantially infinite number of exhaust gas recirculation (EGR) states, is able to be achieved.
  • a suitable actuator which may be, for example, an electrohydraulic actuator, a substantially infinite number of open positions of the paddle valve member, for achieving a substantially infinite number of degrees of occlusion of the upstream portion of the scroll element of the turbine stage of the turbo compressor, and therefore a substantially infinite number of exhaust gas recirculation (EGR) states, is able to be achieved.

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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 Circulating Devices (AREA)
  • Supercharger (AREA)
EP01125970A 2000-12-07 2001-10-31 Système de recyclage de gaz d'échappement avec une vanne de contre-pression dans le collecteur d'échappement Withdrawn EP1213468A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US73388100A 2000-12-07 2000-12-07
US733881 2000-12-07

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EP1213468A2 true EP1213468A2 (fr) 2002-06-12
EP1213468A3 EP1213468A3 (fr) 2003-11-26

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003089819A1 (fr) * 2002-04-15 2003-10-30 Jenara Enterprises Ltd. Soupape de commande des gaz d'echappement, dispositif et procede de commande de l'ecoulement des gaz d'echappement
EP1273775B1 (fr) * 2001-07-02 2005-03-16 BorgWarner Inc. Conduit de récirculation de gaz d'échappement à pression totale
FR2873759A1 (fr) * 2004-08-02 2006-02-03 Renault Sas Agencement pour l'alimentation en gaz d'echappement recycles d'un moteur thermique turbocompresse
WO2006056279A1 (fr) * 2004-11-19 2006-06-01 Bayerische Motoren Werke Aktiengesellschaft Vehicule a moteur turbo diesel et recyclage des gaz d'echappement
FR2943722A1 (fr) * 2009-03-30 2010-10-01 Melchior Jean F Moteur a combustion interne suralimente
ITMI20091799A1 (it) * 2009-10-19 2011-04-20 Dellorto Spa Valvola egr per applicazioni di tipo low pressure, nella tecnica del ricircolo controllato di gas combusti in motori a combustione interna.
WO2011147513A1 (fr) * 2010-05-28 2011-12-01 Daimler Ag Moteur à combustion interne
DE102010050256A1 (de) * 2010-11-02 2012-05-03 Volkswagen Ag Bauelement für eine Brennkraftmaschine und eine solche Brennkraftmaschine mit einer Abgasrückführleitung und einem Abgasrückführventil
KR20130113098A (ko) * 2012-04-05 2013-10-15 두산인프라코어 주식회사 엔진의 배기가스 재순환 시스템
CN104508287A (zh) * 2012-07-25 2015-04-08 通用电气公司 用于导引排气的系统和方法
FR3012558A1 (fr) * 2013-10-31 2015-05-01 Valeo Sys Controle Moteur Sas Element de vanne, notamment pour moteur thermique
EP2930326A1 (fr) * 2014-04-09 2015-10-14 MAN Truck & Bus AG Collecteur de gaz d'échappement pour un moteur à combustion interne, en particulier dans des véhicules automobiles

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US4237837A (en) * 1978-09-13 1980-12-09 Toyota Jidosha Kogyo Kabushiki Kaisha Exhaust gas recirculation for a diesel engine
US4428352A (en) * 1980-12-22 1984-01-31 Bbc Brown, Boveri & Co., Ltd. Process for operating an internal-combustion engine with a supercharger which can be cut out, and a device for carrying out the process
US5740785A (en) * 1997-06-09 1998-04-21 Southwest Research Institute Two way-high pressure loop, exhaust gas recirculation valve
DE19858626C1 (de) * 1998-12-18 2000-05-04 Mtu Friedrichshafen Gmbh Abgasklappenmechanismus für eine Brennkraftmaschine
US6089019A (en) * 1999-01-15 2000-07-18 Borgwarner Inc. Turbocharger and EGR system
EP1273775A1 (fr) * 2001-07-02 2003-01-08 BorgWarner Inc. Conduit de récirculation de gaz d'échappement à pression totale

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4237837A (en) * 1978-09-13 1980-12-09 Toyota Jidosha Kogyo Kabushiki Kaisha Exhaust gas recirculation for a diesel engine
US4428352A (en) * 1980-12-22 1984-01-31 Bbc Brown, Boveri & Co., Ltd. Process for operating an internal-combustion engine with a supercharger which can be cut out, and a device for carrying out the process
US5740785A (en) * 1997-06-09 1998-04-21 Southwest Research Institute Two way-high pressure loop, exhaust gas recirculation valve
DE19858626C1 (de) * 1998-12-18 2000-05-04 Mtu Friedrichshafen Gmbh Abgasklappenmechanismus für eine Brennkraftmaschine
US6089019A (en) * 1999-01-15 2000-07-18 Borgwarner Inc. Turbocharger and EGR system
EP1273775A1 (fr) * 2001-07-02 2003-01-08 BorgWarner Inc. Conduit de récirculation de gaz d'échappement à pression totale

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1273775B1 (fr) * 2001-07-02 2005-03-16 BorgWarner Inc. Conduit de récirculation de gaz d'échappement à pression totale
WO2003089819A1 (fr) * 2002-04-15 2003-10-30 Jenara Enterprises Ltd. Soupape de commande des gaz d'echappement, dispositif et procede de commande de l'ecoulement des gaz d'echappement
FR2873759A1 (fr) * 2004-08-02 2006-02-03 Renault Sas Agencement pour l'alimentation en gaz d'echappement recycles d'un moteur thermique turbocompresse
WO2006056279A1 (fr) * 2004-11-19 2006-06-01 Bayerische Motoren Werke Aktiengesellschaft Vehicule a moteur turbo diesel et recyclage des gaz d'echappement
FR2943722A1 (fr) * 2009-03-30 2010-10-01 Melchior Jean F Moteur a combustion interne suralimente
WO2010112689A1 (fr) * 2009-03-30 2010-10-07 Melchior Jean F Moteur a combustion interne suralimente
ITMI20091799A1 (it) * 2009-10-19 2011-04-20 Dellorto Spa Valvola egr per applicazioni di tipo low pressure, nella tecnica del ricircolo controllato di gas combusti in motori a combustione interna.
WO2011048540A1 (fr) * 2009-10-19 2011-04-28 Dell'orto S.P.A. Soupape pour applications egr à basse pression dans les moteurs à combustion interne
WO2011147513A1 (fr) * 2010-05-28 2011-12-01 Daimler Ag Moteur à combustion interne
DE102010050256A1 (de) * 2010-11-02 2012-05-03 Volkswagen Ag Bauelement für eine Brennkraftmaschine und eine solche Brennkraftmaschine mit einer Abgasrückführleitung und einem Abgasrückführventil
KR20130113098A (ko) * 2012-04-05 2013-10-15 두산인프라코어 주식회사 엔진의 배기가스 재순환 시스템
CN104204493A (zh) * 2012-04-05 2014-12-10 斗山英维高株式会社 发动机的排气再循环系统
CN104508287A (zh) * 2012-07-25 2015-04-08 通用电气公司 用于导引排气的系统和方法
FR3012558A1 (fr) * 2013-10-31 2015-05-01 Valeo Sys Controle Moteur Sas Element de vanne, notamment pour moteur thermique
WO2015063394A1 (fr) * 2013-10-31 2015-05-07 Valeo Systemes De Controle Moteur Élément de vanne, notamment pour moteur thermique
EP2930326A1 (fr) * 2014-04-09 2015-10-14 MAN Truck & Bus AG Collecteur de gaz d'échappement pour un moteur à combustion interne, en particulier dans des véhicules automobiles

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