WO1995016111A1 - Systeme d'echappement pour moteurs diesel - Google Patents

Systeme d'echappement pour moteurs diesel Download PDF

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Publication number
WO1995016111A1
WO1995016111A1 PCT/EP1994/004014 EP9404014W WO9516111A1 WO 1995016111 A1 WO1995016111 A1 WO 1995016111A1 EP 9404014 W EP9404014 W EP 9404014W WO 9516111 A1 WO9516111 A1 WO 9516111A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipes
exhaust system
inner walls
diesel engine
soot
Prior art date
Application number
PCT/EP1994/004014
Other languages
German (de)
English (en)
Inventor
Richard Bauder
Original Assignee
Audi Ag
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 Audi Ag filed Critical Audi Ag
Priority to DE59406293T priority Critical patent/DE59406293D1/de
Priority to EP95903314A priority patent/EP0733157B1/fr
Publication of WO1995016111A1 publication Critical patent/WO1995016111A1/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
    • F01N13/16—Selection of particular materials
    • 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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/084—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases flowing through the silencer two or more times longitudinally in opposite directions, e.g. using parallel or concentric tubes
    • 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
    • F01N13/02—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 having two or more separate silencers in series
    • 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
    • F01N2230/00—Combination of silencers and other devices
    • F01N2230/04—Catalytic converters
    • 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
    • F01N2510/00—Surface coverings
    • F01N2510/08—Surface coverings for corrosion prevention
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Definitions

  • the invention relates to an exhaust system for a diesel internal combustion engine according to the preamble of claim 1.
  • the object of the invention is to provide an exhaust system of the generic type, in which the particle accumulation in part-load operation is reduced considerably with little effort and, consequently, the soot surge during the subsequent acceleration is considerably reduced.
  • At least the inner walls of the connecting pipes and the pipes in the reflection silencer have a maximum roughness of 1 ⁇ m. It has been shown that with such pipes, the inner surface of which has a roughness depth which is only about 20% of the roughness depth of conventional exhaust pipes, the particle accumulation is considerably reduced, namely by up to 60%, which is has a corresponding reduction in the soot impact.
  • the low roughness depth is preferably achieved by coating the inner walls of the pipes, for example by B. by coating with aluminum, or by enamelling, can be realized with the roughness depth of 0.5 ⁇ m.
  • the enamelling of the inner surfaces of the tubes has the further advantage that the inner surfaces of the tubes are then electrically non-conductive, so that no electrostatic charge can occur which could favor the adherence of particles.
  • an exhaust system of a diesel internal combustion engine 1 is schematically shown, on the outlet manifold 2 of which a front pipe 3 is flanged, which is connected to an oxidation catalytic converter 4, to which a reflection pre-silencer 6 is connected by a first intermediate pipe 5, which is in turn connected to a main reflection silencer 8 by a second connecting pipe 7.
  • a front pipe 3 is flanged, which is connected to an oxidation catalytic converter 4
  • a reflection pre-silencer 6 is connected by a first intermediate pipe 5, which is in turn connected to a main reflection silencer 8 by a second connecting pipe 7.
  • the inner walls of the tubes 3, 5, 7 and 9 and the tubes 10, 11, 12 in the mufflers 6 and 8 have a maximum roughness of 1 ⁇ m, which is achieved in particular by an aluminum coating or enamelling.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

Un système d'échappement pour un moteur Diesel comprend un catalyseur (4) et au moins un silencieux à chicanes (6, 8) reliés l'un à l'autre et au moteur (1) par des tuyaux (3, 5, 6). Les parois intérieures des tuyaux de liaison et des tuyaux (10, 11, 12) situés dans le silencieux à chicanes présentent une rugosité d'au maximum 1 νm, obtenue par exemple par enduction des parois intérieures avec de l'aluminium ou par émaillage. L'accumulation de particules pendant le fonctionnement sous une charge partielle et l'émission de fumée pendant l'accélération qui s'ensuit sont ainsi considérablement réduites.
PCT/EP1994/004014 1993-12-09 1994-12-02 Systeme d'echappement pour moteurs diesel WO1995016111A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE59406293T DE59406293D1 (de) 1993-12-09 1994-12-02 Auspuffanlage für eine diesel-brennkraftmaschine
EP95903314A EP0733157B1 (fr) 1993-12-09 1994-12-02 Systeme d'echappement pour moteurs diesel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEG9318921.4U 1993-12-09
DE9318921U DE9318921U1 (de) 1993-12-09 1993-12-09 Auspuffanlage für eine Diesel-Brennkraftmaschine

Publications (1)

Publication Number Publication Date
WO1995016111A1 true WO1995016111A1 (fr) 1995-06-15

Family

ID=6901775

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1994/004014 WO1995016111A1 (fr) 1993-12-09 1994-12-02 Systeme d'echappement pour moteurs diesel

Country Status (3)

Country Link
EP (1) EP0733157B1 (fr)
DE (2) DE9318921U1 (fr)
WO (1) WO1995016111A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002001049A1 (fr) * 2000-06-30 2002-01-03 Faurecia Systemes D'echappement Volume d'echappement et dispositif d'echappement le comportant

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2742802B1 (fr) * 1995-12-20 1998-01-30 Lorraine Laminage Pot d'echappement de vehicule automobile
JP2001330394A (ja) * 2000-05-22 2001-11-30 Denso Corp 排気熱交換器
DE202007012019U1 (de) 2007-08-28 2008-02-21 Penzkofer, Klaus Abgassystem für Kraftfahrzeuge mit Verbrennungsmotoren

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0007131A1 (fr) * 1978-07-07 1980-01-23 Reimbold & Strick GmbH & Co. KG Silencieux émaillé pour pot d'echappement et procédé d'émaillage d'un tel silencieux

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT355878B (de) * 1975-05-30 1980-03-25 Vmw Ranshofen Berndorf Ag Auspuffanlage
DE2917586C2 (de) * 1979-04-30 1982-11-18 Werner Dr.-Ing. 8450 Amberg Baumann Auspufftopf aus emailliertem Stahlblech
DE3015907A1 (de) * 1980-04-24 1981-10-29 Werner Dr.-Ing. 8450 Amberg Baumann Auspufftopf aus emailliertem stahlblech und verfahren zu seiner herstellung
DE3638807A1 (de) * 1986-11-17 1988-05-19 Westfalia Email Gusseisenabgaskruemmer fuer zylinderbrennkraftmaschinen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0007131A1 (fr) * 1978-07-07 1980-01-23 Reimbold & Strick GmbH & Co. KG Silencieux émaillé pour pot d'echappement et procédé d'émaillage d'un tel silencieux

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ASHWORTH ET AL: "Materials requirements for modern exhaust systems", STEEL TIMES INTERNATIONAL, no. 4, 17 July 1993 (1993-07-17), REDHILL, SURREY, GB, pages 36 - 38, XP000389933 *
J. DECROIX ET AL.: "Evolution des matériaux pour la ligne d' échappement de l' automobile européene", INGENIEURS DE L' AUTOMOBILE, no. 4, May 1986 (1986-05-01), PARIS, FRANCE, pages 94 - 98 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002001049A1 (fr) * 2000-06-30 2002-01-03 Faurecia Systemes D'echappement Volume d'echappement et dispositif d'echappement le comportant
FR2811015A1 (fr) * 2000-06-30 2002-01-04 Ecia Equip Composants Ind Auto Volume d'echappement et dispositif d'echappement le comportant

Also Published As

Publication number Publication date
DE9318921U1 (de) 1994-02-03
EP0733157B1 (fr) 1998-06-17
DE59406293D1 (de) 1998-07-23
EP0733157A1 (fr) 1996-09-25

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