EP2938849A1 - Organe d'echappement pour moteur a combustion interne - Google Patents
Organe d'echappement pour moteur a combustion interneInfo
- Publication number
- EP2938849A1 EP2938849A1 EP13785553.2A EP13785553A EP2938849A1 EP 2938849 A1 EP2938849 A1 EP 2938849A1 EP 13785553 A EP13785553 A EP 13785553A EP 2938849 A1 EP2938849 A1 EP 2938849A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet
- exhaust
- inlet duct
- manifold
- exhaust manifold
- 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.)
- Granted
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
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
- F01N13/102—Other arrangements or adaptations of exhaust conduits of exhaust manifolds having thermal insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features
- F01N13/14—Exhaust or silencing apparatus characterised by constructional features having thermal insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features
- F01N13/14—Exhaust or silencing apparatus characterised by constructional features having thermal insulation
- F01N13/141—Double-walled exhaust pipes or housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features
- F01N13/14—Exhaust or silencing apparatus characterised by constructional features having thermal insulation
- F01N13/141—Double-walled exhaust pipes or housings
- F01N13/143—Double-walled exhaust pipes or housings with air filling the space between both walls
-
- 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
- F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
- F02B67/10—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of charging or scavenging 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
- F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
- F01N2450/22—Methods or apparatus for fitting, inserting or repairing different elements by welding or brazing
-
- 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
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
Definitions
- the present invention relates to the automotive field and more particularly to internal combustion engines equipped with an integrated turbocharger.
- This type of engine includes an exhaust manifold connected to an inlet duct of a turbocharger
- the exhaust manifold is most often assembled to the cylinder head of the engine by means of a screw connection which joins the inlet flanges with the exhaust face of the cylinder head.
- a metal seal is interposed between the cylinder head and the inlet flanges of the exhaust manifold to provide a better seal to the exhaust gas.
- the exhaust manifold consists of two sheets and the turbocharger.
- the inner plate of the exhaust manifold and that of the turbocharger being connected either by a non-welded but fitted assembly at each junction between conduits, or with differential expansion compensators.
- the turbocharger is most often assembled to the exhaust manifold by means of a screw connection which joins the outlet flange of the exhaust manifold and the collector of the turbocharger.
- a metal seal is interposed between the turbo and the inlet flange of the exhaust manifold to provide a better seal to the exhaust gas.
- the manifold and the turbine housing are generally cast iron and connected by a flange with studs.
- the conduit between the turbo and the catalytic converter is generally sheet metal.
- the connection with the turbine is usually a flange with studs.
- the connection with the catalytic converter is usually a weld.
- This system makes it possible to reduce the thermal inertia of the system in order to prime the catalyst as much as possible, but the cost of this system remains relatively high today.
- the object of the present invention is to propose a solution which makes it possible to eliminate flanges which are bulky and which have a certain thermal inertia and which respond to the important thermal stresses of the exhaust manifold.
- the exhaust member of an internal combustion engine comprises an exhaust manifold with an internal sheet and an external sheet welded to a turbocharger by an inlet duct with an internal sheet and an outer sheet characterized in that the inlet duct is welded to the outer sheet of the exhaust manifold and the inner sheet of the manifold is connected by a sliding connection.
- the welding between the exhaust manifold and the inlet duct must make it possible to limit the mechanical stresses of thermal origin likely to cause cracks in the weld that may even be destroyed.
- An input that proportionally has a lower temperature is connected to the outer sheet of the exhaust manifold which is also at a lower temperature than the manifold inner sheet. Away from temperature being lower between the different sheets welded together, the mechanical stresses of thermal origins are all reduced.
- the sliding connection of the inner plate of the collector with the inlet duct of the turbine casing gives it the possibility of expanding freely under the effect of heat.
- the outer sheet of the exhaust manifold is welded to the outer sheet of the inlet duct.
- the two outer sheets are those whose temperature is proportionally the most basic and those which are best thermally insulated from the four sheets.
- the outer sheet of the exhaust manifold is welded to the inner sheet of the inlet duct.
- the inner sheet is relatively cooler than the inner sheet of the collector.
- the outer sheet of the inlet duct is welded to the internal sheet of said duct.
- the outer sheet of the duct is thus not in contact with the inner sheet of the hottest collector.
- an expansion compensator is disposed between the two welds.
- the welding between the outer sheet of the manifold most exposed to heat is protected from the weld between the two sheets of the inlet duct by an expansion compensator which reduces the mechanical stresses due to the temperature differences of the two welds.
- an expansion compensator is disposed towards the turbine after the welding of the outer sheet of the inlet duct with the inner sheet of said duct.
- the expansion compensator placed between the weld and the bottom of the inner sheet of the conduit allows the weld not to be subjected to the mechanical stresses related to the heat of the internal sheet.
- a thermal insulator is disposed between the two sheets of the intake duct. This insulation allows the outer sheet of the intake duct to be less hot than the inner sheet. According to another characteristic, a thermal insulator is disposed between the two plates of the exhaust manifold. This insulation allows the outer sheet of the collector to be less hot than the inner sheet.
- the thermal insulation is air.
- Insulation can also be a solid insulator.
- the invention also relates to an internal combustion engine equipped with an exhaust member with one of the preceding characteristics.
- FIG. 1 represents a general view of an internal combustion engine according to the invention
- FIG. 2 shows a first variant of the invention
- FIG. 3 illustrates a second variant of the invention
- FIG. 4 represents a third variant
- Figure 5 shows a fourth variant.
- the internal combustion engine 1 illustrated in Figure 1 comprises an internal combustion chamber (not shown), an exhaust manifold 2 and a turbocharger or turbo 3.
- the turbo 3 as the exhaust manifold 2 is double wall, an inner plate 20 for the collector 2 and an inner sheet 30 for the turbo 3 and an outer sheet 21 for the collector 2 and an outer sheet 31 for the turbo 3.
- the internal 30 and outer plates 31 of the turbo 3 are substantially cylindrical.
- the first variant illustrated in FIG. 2 details the connection between the collector 2 and the turbo 3.
- the inner and outer plates 20 of the collector 21 each have an edge 200 and 210 of substantially circular shape of dimension substantially equal to the cylinder formed by the sheets of the turbo 3.
- the edge 210 of the inner plate 21 of the collector 2 is slid into the edge 200 of the outer sheet 20.
- the sheet 30 is slid into the edge 200.
- the sheet 31 of the turbo 3 is welded by a weld seam
- the edge 200 is slid into the edge 210 in which it is free to move.
- the outer edge 210 is welded by a weld bead 5 to the inner sheet 30 of the turbo 3 while the outer sheet 31 is welded to the inner sheet 30 by a weld bead 4.
- the advantage of this solution is that the wall turbo 3 can be performed before its mounting on the exhaust manifold 2, the weld 5 being made only at the time of final assembly.
- the turbo 3 is welded to the outer sheet 21 of the collector 2, said sheet being less subjected to heat than the inner sheet 20 the deformations are less important.
- a second expansion compensator 7 is disposed between the weld 4 and the internal plate 30 of the turbo 3 to allow the inner plate 30, warmer, to expand without stressing the weld bead 4.
- An air layer 8 may act as an insulator between the two sheets 30 and 31 of the turbo 3 but a solid insulator 80 may also be disposed between these two sheets. In the same way an air layer 9 or a solid insulator 90 is placed between the two sheets 20 and 21 of the collector 2.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
- Supercharger (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1262776A FR3000134B1 (fr) | 2012-12-26 | 2012-12-26 | Organe d'echappement pour moteur a combustion interne |
| PCT/FR2013/052444 WO2014102472A1 (fr) | 2012-12-26 | 2013-10-14 | Organe d'echappement pour moteur a combustion interne |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2938849A1 true EP2938849A1 (fr) | 2015-11-04 |
| EP2938849B1 EP2938849B1 (fr) | 2018-04-25 |
Family
ID=47989178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13785553.2A Active EP2938849B1 (fr) | 2012-12-26 | 2013-10-14 | Organe d'echappement pour moteur a combustion interne |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2938849B1 (fr) |
| CN (1) | CN104870769A (fr) |
| FR (1) | FR3000134B1 (fr) |
| WO (1) | WO2014102472A1 (fr) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10061846B4 (de) * | 2000-12-12 | 2004-09-09 | Daimlerchrysler Ag | Abgasturbolader für eine Brennkraftmaschine |
| EP1426557B1 (fr) * | 2002-12-03 | 2013-07-17 | BorgWarner, Inc. | Boîtier pour turbocompresseur |
| JP4365840B2 (ja) * | 2006-08-10 | 2009-11-18 | 三菱重工業株式会社 | 多段過給式排気ターボ過給機の製造方法 |
| FR2924467B1 (fr) * | 2007-12-04 | 2009-12-11 | Renault Sas | Collecteur d'echappement avec turbocompresseur integre. |
| US9151208B2 (en) * | 2008-03-13 | 2015-10-06 | Borgwarner Inc. | Exhaust manifold of an internal combustion engine |
| ES2359307B2 (es) * | 2009-02-13 | 2011-10-14 | Universidad Politécnica De Valencia | Colector de escape de un motor alternativo turbo-sobrealimentado. |
| US9500120B2 (en) * | 2011-03-14 | 2016-11-22 | Flexible Metal, Inc. | Integration ring |
-
2012
- 2012-12-26 FR FR1262776A patent/FR3000134B1/fr not_active Expired - Fee Related
-
2013
- 2013-10-14 CN CN201380067186.6A patent/CN104870769A/zh active Pending
- 2013-10-14 EP EP13785553.2A patent/EP2938849B1/fr active Active
- 2013-10-14 WO PCT/FR2013/052444 patent/WO2014102472A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014102472A1 (fr) | 2014-07-03 |
| EP2938849B1 (fr) | 2018-04-25 |
| FR3000134B1 (fr) | 2014-12-05 |
| CN104870769A (zh) | 2015-08-26 |
| FR3000134A1 (fr) | 2014-06-27 |
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