US20110107753A1 - Exhaust line for automobile - Google Patents
Exhaust line for automobile Download PDFInfo
- Publication number
- US20110107753A1 US20110107753A1 US12/988,171 US98817109A US2011107753A1 US 20110107753 A1 US20110107753 A1 US 20110107753A1 US 98817109 A US98817109 A US 98817109A US 2011107753 A1 US2011107753 A1 US 2011107753A1
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- United States
- Prior art keywords
- flange
- outlet
- manifold
- inlet
- exhaust gas
- 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.)
- Abandoned
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Classifications
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- 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
-
- 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
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
-
- 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
- F01N2450/24—Methods or apparatus for fitting, inserting or repairing different elements by bolts, screws, rivets or the like
Definitions
- the present invention generally concerns exhaust lines for automobiles.
- the invention concerns an exhaust line provided to be connected to the engine of an automobile, the exhaust line being of the type comprising:
- the downstream apparatus is typically a turbocompressor, which itself is connected to a catalytic purification member. These two apparatuses have a significant mass.
- a support structure is provided to fasten the catalytic purification member and the turbocompressor on the engine block.
- This support structure picks up part of the weight of the catalytic purification member and the turbocompressor and transmits it to the engine block.
- the other part of the weight is picked up by the outlet flange of the manifold.
- This manifold is connected by an inlet flange on the cylinder head of the engine.
- the outlet flange which picks up part of the weight of the turbocompressor and the catalytic purification member, has a fairly significant overhang in relation to the inlet flange. Because of this, it is necessary to dimension the enclosure of the manifold and the upstream and downstream flanges accordingly.
- the support attached to the engine block is complex and costly.
- the invention aims to propose an exhaust line that is less complex and less costly, while also ensuring effective maintenance of the apparatus(es) located downstream of the manifold.
- the invention concerns an exhaust line of the aforementioned type, characterized in that the engine comprises an engine block and a cylinder head, the exhaust line comprising means for attaching the outlet flange of the manifold directly to the engine block or cylinder head.
- the exhaust line can also have one or several of the features below, considered individually or according to all technically possible combinations:
- the manifold includes an enclosure inwardly defining the exhaust gas circulation channel and an intermediate flange welded to the enclosure, the outlet flange being rigidly attached to the intermediate flange of the manifold.
- FIG. 1 is a top view of a first embodiment of the invention
- FIG. 2 is a view similar to that of FIG. 1 , for a second embodiment of the invention.
- FIG. 3 is a view similar to FIG. 1 , for a third embodiment of the invention.
- FIG. 4 is a view similar to FIG. 1 , for a fourth embodiment of the invention.
- FIG. 5 is a side view of an alternative embodiment of the invention wherein the outlet flange is perpendicular to the inlet flange;
- FIG. 6 is a perspective view of the upstream and downstream flanges of FIG. 5 ;
- FIG. 7 is a front view of the upstream and downstream flanges of FIG. 6 .
- the exhaust line 1 illustrated in FIG. 1 is provided to be connected to the engine 3 of an automobile.
- the exhaust line includes, from upstream to downstream in the direction of circulation of the exhaust gases, a manifold 5 provided to capture the exhaust gas coming out of the combustion chambers of the engine, a turbocompressor 7 , a catalytic purification member (not shown), and other equipment not shown, such as a muffler.
- the exhaust line includes a cannula (not shown) making it possible to release the purified exhaust gas into the atmosphere.
- the manifold 5 includes an inlet flange 9 for attaching to the engine, an enclosure 11 and an outlet flange 13 for attaching to the turbocompressor 7 .
- the inlet flange 9 is rigidly attached on the cylinder head 15 of the engine.
- the enclosure 11 inwardly defines an exhaust gas circulation channel 16 having four inlets 17 and one outlet 19 .
- Each inlet 17 is provided to be placed to coincide with the exhaust gas outlet of one of the combustion chambers of the engine.
- each inlet 17 is connected to the outlet of one of the combustion chambers of the engine and is capable of capturing the exhaust gases coming out of the corresponding combustion chamber.
- the inner channel 16 includes four inlet sections 21 each defining an inlet 17 .
- the inlet sections 21 emerge in an outlet section 23 defining the outlet 19 .
- the inlets 17 pass through the inlet flange 9 .
- the outlet 19 passes through the outlet flange 13 .
- the turbocompressor 7 includes an inlet duct 25 inwardly defining an exhaust gas inlet 27 .
- the inlet 27 is placed to coincide with and is sealably attached to the exhaust gas outlet 19 of the manifold.
- the turbocompressor 7 includes a companion flange 29 rigidly attached to the outlet flange 13 .
- the flange 13 and the companion flange 29 are typically attached to each other by bolts 31 .
- the inlet duct 25 is for example welded on the companion flange 29 .
- the exhaust gas inlet 27 passes through the companion flange 29 .
- the flange 13 and the companion flange 29 are pushed against each other and are parallel to each other.
- the exhaust line includes means 33 for attaching the outlet flange 13 of the manifold directly to the cylinder head 15 .
- the means 33 comprises at least one elongated attaching member 35 , and preferably comprises several elongated attaching members 35 . It for example comprises three or four attaching members 35 , each ensuring attaching of the outlet flange 13 directly to the cylinder head 15 .
- Each attaching member is connected to the outlet flange 13 by a first end 37 and is connected to the cylinder head 15 by a second end 39 .
- the attaching member 35 is for example a screw or a threaded rod or a bolt or a lug stud, or a tierod.
- each attaching member 35 passes through the inlet flange 9 by a hole 41 provided to that end.
- the attaching means 33 includes spacers 43 inserted along each attaching member 35 between the inlet flange 9 and the outlet flange 13 .
- the spacer 43 is for example a rigid metal cylinder in which the member 35 is engaged.
- the member 35 passes through the spacer 43 over the entire length thereof.
- the spacer 43 bears by one end on the inlet flange 9 and by its opposite end on the outlet flange 13 .
- Each attaching member 35 passes through the outlet flange 13 by orifices 45 provided to that end.
- the end 37 is the head of the screw, and the end 39 corresponds to a threaded portion of the screw.
- the head 37 bears on a face 47 of the outlet flange turned opposite the cylinder head 15 .
- the threaded end 39 is screwed into a corresponding tapped housing 49 of the cylinder head 15 .
- the holes 41 and 45 formed in the upstream and downstream flanges to allow the screw 35 to pass, are not tapped. Thus the screw is free in relation to the inlet flange.
- the screw 35 is screwed by its end 39 into the tapped housing 49 . Due to the tractive force exerted by the head of the screw 37 towards the cylinder head 15 , the spacer 35 is squeezed between the flanges 9 and 13 .
- the inlet flange 9 is typically attached to the cylinder head 15 by screws, engaged in holes 52 provided to that end, and illustrated in FIG. 6 .
- the attaching members 35 can be not screws, but rather bolts.
- the member 35 includes a screw and a nut.
- the head of the screw is mounted as in FIG. 1 .
- the threaded end of the screw passes all the way through an orifice formed in the web of the cylinder head, a nut being screwed on the threaded end of the screw so as to press the web of the cylinder head and the inlet flange 9 against each other.
- the attaching head 35 is a rod whereof both ends are threaded
- one of the threaded ends is mounted so as to pass all the way through one of the orifices 45 of the outlet flange 13 , a nut being screwed on the threaded end of the rod.
- the opposite end of the threaded rod can be screwed into a tapped housing as shown in FIG. 1 . Said end can also pass through a non-tapped orifice of a web of the cylinder head, and receive a nut.
- the end 37 of the attaching member could be threaded, and the orifice 45 tapped, the end 37 thus being screwed into the orifice 45 .
- the orifices 45 are distributed around the orifice of the corresponding flange 13 at the outlet 19 .
- the attaching means 33 can include four attaching members 35 , engaged in four orifices 45 occupying the apices of a square, the outlet 19 occupying the center of said square.
- bolts 31 for attaching the companion flange 29 to the outlet flange 13 and said bolts can be arranged at the apex of a square whereof the outlet 19 constitutes the center.
- the bolts 31 are closer to the outlet 19 than the attaching members 35 .
- FIG. 2 A second embodiment of the invention is shown in FIG. 2 . Only the points by which the second embodiment differs from the first will be described below. Elements that are identical or ensure the same function in both embodiments will be designated by the same references.
- the companion flange 29 is smaller than the outlet flange 13 .
- the companion flange 29 is substantially the same size as the outlet flange 13 .
- the exhaust line does not include specific means for ensuring the attaching of the outlet flange 13 to the companion flange. Indeed, the outlet flange 13 is attached to the companion flange 29 via attaching members 35 .
- the companion flange 29 includes holes 51 arranged to coincide with the orifices 45 of the outlet flange 13 .
- the attaching members 35 pass through both the holes 51 and the orifices 45 .
- the head 37 of the screw bears on a face 53 of the companion flange turned opposite the cylinder head 15 .
- the flange and the companion flange are squeezed between the head 47 of the screw on one hand, and the spacer 43 on the other.
- the hole 51 could be tapped, and the fastening member 35 could include an end portion 37 to be threaded screwed into the tapped hole 51 .
- FIG. 3 A third embodiment of the invention is illustrated in FIG. 3 . Only the points by which the third embodiment differs from the first will be described here. Elements that are identical or ensure the same function in both embodiments will be designated by the same references.
- the turbocompressor does not include a companion flange 29 .
- the duct 25 is directly welded on the outlet flange 13 .
- the manifold includes an intermediate flange 55 welded to the enclosure 11 .
- the outlet 19 passes through both the intermediate flange 55 and the outlet flange 13 .
- the outlet flange 13 is pushed against a face of the intermediate flange 55 turned opposite the cylinder head 15 .
- the outlet flange and the flange 55 are rigidly attached to each other by bolts 57 .
- the intermediate flange 55 is smaller than the outlet flange 13 .
- the bolts 57 are arranged closer to the outlet 19 than the attaching members 35 . They are for example arranged like the bolts 31 of the first embodiment.
- FIG. 4 A fourth embodiment of the invention is illustrated in FIG. 4 . Only the points by which this fourth embodiment differs from the first will be described here. Elements that are identical or ensure the same function in both embodiments will be designated by the same references.
- the turbocompressor does not include a companion flange 29
- the manifold does not include an intermediate flange 55 .
- the enclosure 11 of the manifold is welded directly on a face 59 of the outlet flange 13 turned towards the cylinder head.
- the duct 25 of the turbocompressor is rigidly attached, for example by a seam weld, on a face 61 of the outlet flange 13 situated opposite the cylinder head 15 .
- the outlet flange 13 is planar, as is the inlet flange 9 .
- the upstream and downstream flanges are substantially parallel to each other.
- the outlet flange 13 extends substantially perpendicular to the inlet flange 9 .
- the inlet flange 9 extends in a substantially vertical and transverse plane, the outlet flange 13 being in a substantially horizontal and transverse plane.
- the inlets 17 of the exhaust gas circulation channel through the manifold are oriented substantially longitudinally.
- the outlet flange 13 is placed above the enclosure 11 , the outlet 19 being oriented vertically upward.
- the inlet duct 25 of the turbo manifold is situated above the outlet flange 13 .
- the outlet flange 13 has large opposite faces 63 and 65 .
- the flange 13 is also laterally defined by a face 67 turned towards the cylinder head 15 .
- the face 67 extends parallel to and opposite the flange 9 .
- the spacers 43 are inserted between the face 67 and the flange 9 .
- the attaching members 35 were substantially perpendicular to the flanges 9 and 13 .
- the attaching members 35 are substantially parallel to the outlet flange 13 , i.e. parallel to the large faces 63 and 65 .
- the attaching members 35 remain perpendicular to the inlet flange 9 .
- the outlet flange 13 includes two orifices 69 for receiving attaching members 35 . These orifices 69 pass completely through the outlet flange from a face 71 opposite the cylinder head 15 to the face 67 . In the case where the attaching members are screws, the heads 37 of the screws bear on the face 71 .
- the exhaust line described above has multiple advantages.
- the exhaust line comprises attaching means for attaching the outlet flange of the manifold directly to the engine block or the cylinder head, the stresses applied to the outlet flange are picked up by the cylinder head or the engine block through the attaching means. These stresses do not pass through the enclosure or the upstream flange.
- elongated attaching members for example screws, lug studs or any other similar attaching member, makes it possible to perform the attachment particularly simply.
- the attaching means does not include complicated support pieces.
- the attaching means does not significantly increase the weight of the exhaust line.
- securing studs that are already provided on the engine are used to attach the upstream flange.
- the means for attaching the outlet flange to the engine practically does not increase the weight of the exhaust line at all.
- the outlet flange can have any sort of orientation of the upstream flange. It is not necessarily parallel to the upstream flange.
- connection between the outlet flange and the enclosure of the manifold, and the connection between the outlet flange and the apparatus downstream therefrom for example the turbocompressor.
- the invention makes it possible to obtain a connection between the outlet flange and the cylinder head or engine block particularly simply and economically.
- the exhaust line described above can have multiple alternatives.
- the outlet flange can be attached either to the engine block or the cylinder head of the engine.
- the number of attaching members varies.
- the means for attaching the outlet flange can comprise a single attaching member or two, three or even four or more attaching members.
- the attaching members can be arranged in variable positions in relation to the outlet flange.
- two attaching members can be arranged above the exhaust gas outlet.
- two attaching members can be placed below the exhaust gas outlet.
- Two attaching members can also be provided on one of the sides of the exhaust gas outlet, or three attaching members arranged in a triangle, etc. The number of attaching members and their arrangement are determined by the stresses to be picked up by the outlet flange and transmitted to the cylinder head or engine block.
- attaching means for attaching the outlet flange of the manifold directly to the engine block or to the cylinder head refers to means capable of transmitting the majority of the stresses undergone by the outlet flange to the cylinder head or to the engine block, without passing through other elements of the manifold like the enclosure or the upstream flange.
- the members for attaching the outlet flange to the engine block or to the cylinder block can, depending on the case, pass through or not pass through the upstream flange.
- lug studs are provided to attach the upstream flange.
- the inlet flange therefore includes orifices in positions connected with the studs provided on the engines.
- lug studs are used as members for attaching the outlet flange. Holes are thus provided in the outlet flange opposite holes in the inlet flange and connected with the lug studs of the engine. In this case, the traction exerted towards the engine by the end of the fastening member on the outlet flange is transmitted to the spacer, then to the upstream flange. The latter part is thus pushed against the cylinder head or the engine block.
- lug studs can be used exclusively to attach the inlet flange on the engine block or the cylinder head.
- the downstream apparatus rigidly attached to the outlet flange of the manifold is not necessarily a turbocompressor.
- This apparatus can also be a catalytic purification device or any other element of the exhaust line.
- the manifold cannot have a single inlet flange, but include several separate flanges, one per exhaust gas inlet in the manifold.
- the manifold can include four, five, or more than five inlets, or fewer than four inlets.
- the spacer 43 can have any sort of section. It can have a round, square, rectangular, etc. section. The section can be open or closed.
- the spacer bears on one hand on the inlet flange and on the other hand on the outlet flange.
- the spacer can bear on one hand on the cylinder head or the engine block and on the other hand on the outlet flange.
- the spacer can be rigidly attached on the outlet flange and/or on the upstream flange, by any suitable means, for example by a seam weld.
- the manifold can include contacts making the downstream manifold integral with the upstream manifold.
- Each contact thus has a first end rigidly attached, for example by welding, on the downstream manifold, and a second end attached to the upstream manifold, for example by welding.
- the spacers are either attached to, or integral with the flange.
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- Exhaust Silencers (AREA)
Abstract
An exhaust line connected to the engine of an automobile, includes:
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- a manifold (5) including at least one exhaust gas circulation channel (16) having an exhaust gas outlet (19), the manifold (5) including an outlet flange (13) through which the exhaust gas outlet (19) extends;
- a downstream apparatus (7) having an exhaust gas inlet (27) connected to the exhaust gas outlet (19) of the manifold (5), the downstream apparatus (7) being rigidly connected to the outlet flange (13) of the manifold (5). The engine (3) includes an engine block and a cylinder head (15), and the exhaust line (1) includes attachment elements (33) for attaching the outlet flange (13) of the manifold (5) directly to the engine block or the cylinder head (15).
Description
- The present invention generally concerns exhaust lines for automobiles.
- More precisely, the invention concerns an exhaust line provided to be connected to the engine of an automobile, the exhaust line being of the type comprising:
-
- a manifold inwardly including at least one exhaust gas circulation channel having an exhaust gas outlet, the manifold comprising an outlet flange through which the exhaust gas outlet extends;
- a downstream apparatus having an exhaust gas inlet connected to the exhaust gas outlet of the manifold, the downstream apparatus being rigidly connected to the outlet flange of the manifold.
- The downstream apparatus is typically a turbocompressor, which itself is connected to a catalytic purification member. These two apparatuses have a significant mass.
- In FR 2 856 735, a support structure is provided to fasten the catalytic purification member and the turbocompressor on the engine block. This support structure picks up part of the weight of the catalytic purification member and the turbocompressor and transmits it to the engine block. The other part of the weight is picked up by the outlet flange of the manifold. This manifold is connected by an inlet flange on the cylinder head of the engine. The outlet flange, which picks up part of the weight of the turbocompressor and the catalytic purification member, has a fairly significant overhang in relation to the inlet flange. Because of this, it is necessary to dimension the enclosure of the manifold and the upstream and downstream flanges accordingly. Moreover, the support attached to the engine block is complex and costly.
- In this context, the invention aims to propose an exhaust line that is less complex and less costly, while also ensuring effective maintenance of the apparatus(es) located downstream of the manifold.
- To that end, the invention concerns an exhaust line of the aforementioned type, characterized in that the engine comprises an engine block and a cylinder head, the exhaust line comprising means for attaching the outlet flange of the manifold directly to the engine block or cylinder head.
- The exhaust line can also have one or several of the features below, considered individually or according to all technically possible combinations:
-
- the attaching means comprises at least one elongated attaching member, having a first end portion connected to the outlet flange and a second end portion connected to the engine block or the cylinder head;
- the attaching means comprises at least one spacer inserted along the or each attaching member between the outlet flange and the engine block or cylinder head, with or without the insertion of an inlet flange of the manifold;
- the attaching member is of the type chosen from the group comprising a screw, a threaded rod, a stud or a tierod;
- the circulation channel of the exhaust gases has at least one exhaust gas inlet capable of being connected to an outlet of the combustion chamber of the engine, the manifold including at least one inlet flange passed through by the exhaust gas inlet, the attaching member passing through the inlet flange;
- the outlet flange is substantially parallel to the or each inlet flange;
- the outlet flange is inclined in relation to the or each inlet flange;
- the manifold comprises an enclosure inwardly defining the exhaust gas circulation channel, the outlet flange being welded to the enclosure;
- the downstream apparatus has a companion flange passed through by the exhaust gas inlet of the downstream apparatus, the companion flange being rigidly attached to the outlet flange of the manifold;
- the companion flange is attached to the outlet flange of the manifold using the means for attaching the outlet flange to the engine block or the cylinder head;
- the downstream apparatus has an inlet duct defining the exhaust gas inlet, the inlet duct being welded on the outlet flange of the manifold; and
- the manifold includes an enclosure inwardly defining the exhaust gas circulation channel and an intermediate flange welded to the enclosure, the outlet flange being rigidly attached to the intermediate flange of the manifold.
- Other features and advantages of the invention will emerge from the detailed description thereof provided below, for information and non-limitingly, in reference to the appended figures, among which:
-
FIG. 1 is a top view of a first embodiment of the invention; -
FIG. 2 is a view similar to that ofFIG. 1 , for a second embodiment of the invention; -
FIG. 3 is a view similar toFIG. 1 , for a third embodiment of the invention; -
FIG. 4 is a view similar toFIG. 1 , for a fourth embodiment of the invention; -
FIG. 5 is a side view of an alternative embodiment of the invention wherein the outlet flange is perpendicular to the inlet flange; -
FIG. 6 is a perspective view of the upstream and downstream flanges ofFIG. 5 ; -
FIG. 7 is a front view of the upstream and downstream flanges ofFIG. 6 . - The
exhaust line 1 illustrated inFIG. 1 is provided to be connected to theengine 3 of an automobile. - The exhaust line includes, from upstream to downstream in the direction of circulation of the exhaust gases, a
manifold 5 provided to capture the exhaust gas coming out of the combustion chambers of the engine, aturbocompressor 7, a catalytic purification member (not shown), and other equipment not shown, such as a muffler. At its downstream end, the exhaust line includes a cannula (not shown) making it possible to release the purified exhaust gas into the atmosphere. - The
manifold 5 includes aninlet flange 9 for attaching to the engine, anenclosure 11 and anoutlet flange 13 for attaching to theturbocompressor 7. - The
inlet flange 9 is rigidly attached on thecylinder head 15 of the engine. - The
enclosure 11 inwardly defines an exhaustgas circulation channel 16 having fourinlets 17 and oneoutlet 19. Eachinlet 17 is provided to be placed to coincide with the exhaust gas outlet of one of the combustion chambers of the engine. Thus, eachinlet 17 is connected to the outlet of one of the combustion chambers of the engine and is capable of capturing the exhaust gases coming out of the corresponding combustion chamber. - The
inner channel 16 includes fourinlet sections 21 each defining aninlet 17. Theinlet sections 21 emerge in anoutlet section 23 defining theoutlet 19. - The
inlets 17 pass through theinlet flange 9. Theoutlet 19 passes through theoutlet flange 13. - The
turbocompressor 7 includes aninlet duct 25 inwardly defining anexhaust gas inlet 27. Theinlet 27 is placed to coincide with and is sealably attached to theexhaust gas outlet 19 of the manifold. - In the embodiment of
FIG. 1 , theturbocompressor 7 includes acompanion flange 29 rigidly attached to theoutlet flange 13. Theflange 13 and thecompanion flange 29 are typically attached to each other bybolts 31. Theinlet duct 25 is for example welded on thecompanion flange 29. Theexhaust gas inlet 27 passes through thecompanion flange 29. Theflange 13 and thecompanion flange 29 are pushed against each other and are parallel to each other. - To ensure that the stresses applied to the
outlet flange 13 are directly picked up by the engine, the exhaust line includesmeans 33 for attaching theoutlet flange 13 of the manifold directly to thecylinder head 15. - The
means 33 comprises at least one elongated attachingmember 35, and preferably comprises several elongated attachingmembers 35. It for example comprises three or four attachingmembers 35, each ensuring attaching of theoutlet flange 13 directly to thecylinder head 15. - Each attaching member is connected to the
outlet flange 13 by afirst end 37 and is connected to thecylinder head 15 by asecond end 39. - The attaching
member 35 is for example a screw or a threaded rod or a bolt or a lug stud, or a tierod. - In one embodiment, each attaching
member 35 passes through theinlet flange 9 by ahole 41 provided to that end. In this case, the attaching means 33 includesspacers 43 inserted along each attachingmember 35 between theinlet flange 9 and theoutlet flange 13. Thespacer 43 is for example a rigid metal cylinder in which themember 35 is engaged. Themember 35 passes through thespacer 43 over the entire length thereof. Thespacer 43 bears by one end on theinlet flange 9 and by its opposite end on theoutlet flange 13. - Each attaching
member 35 passes through theoutlet flange 13 byorifices 45 provided to that end. In the case where the attaching member is a screw, theend 37 is the head of the screw, and theend 39 corresponds to a threaded portion of the screw. Thehead 37 bears on aface 47 of the outlet flange turned opposite thecylinder head 15. The threadedend 39 is screwed into a corresponding tappedhousing 49 of thecylinder head 15. - The
holes screw 35 to pass, are not tapped. Thus the screw is free in relation to the inlet flange. - In the embodiment of
FIG. 1 , thescrew 35 is screwed by itsend 39 into the tappedhousing 49. Due to the tractive force exerted by the head of thescrew 37 towards thecylinder head 15, thespacer 35 is squeezed between theflanges - The
inlet flange 9 is typically attached to thecylinder head 15 by screws, engaged inholes 52 provided to that end, and illustrated inFIG. 6 . - The attaching
members 35 can be not screws, but rather bolts. In this case, themember 35 includes a screw and a nut. The head of the screw is mounted as inFIG. 1 . However, the threaded end of the screw passes all the way through an orifice formed in the web of the cylinder head, a nut being screwed on the threaded end of the screw so as to press the web of the cylinder head and theinlet flange 9 against each other. In the case where the attachinghead 35 is a rod whereof both ends are threaded, one of the threaded ends is mounted so as to pass all the way through one of theorifices 45 of theoutlet flange 13, a nut being screwed on the threaded end of the rod. The opposite end of the threaded rod can be screwed into a tapped housing as shown inFIG. 1 . Said end can also pass through a non-tapped orifice of a web of the cylinder head, and receive a nut. - Alternatively, the
end 37 of the attaching member could be threaded, and theorifice 45 tapped, theend 37 thus being screwed into theorifice 45. - Preferably, the
orifices 45 are distributed around the orifice of the correspondingflange 13 at theoutlet 19. For example, the attaching means 33 can include four attachingmembers 35, engaged in fourorifices 45 occupying the apices of a square, theoutlet 19 occupying the center of said square. - Likewise, there can for example be four
bolts 31 for attaching thecompanion flange 29 to theoutlet flange 13 and said bolts can be arranged at the apex of a square whereof theoutlet 19 constitutes the center. Thebolts 31 are closer to theoutlet 19 than the attachingmembers 35. - A second embodiment of the invention is shown in
FIG. 2 . Only the points by which the second embodiment differs from the first will be described below. Elements that are identical or ensure the same function in both embodiments will be designated by the same references. - In the first embodiment, the
companion flange 29 is smaller than theoutlet flange 13. In the second embodiment, thecompanion flange 29 is substantially the same size as theoutlet flange 13. Moreover, the exhaust line does not include specific means for ensuring the attaching of theoutlet flange 13 to the companion flange. Indeed, theoutlet flange 13 is attached to thecompanion flange 29 via attachingmembers 35. - To that end, the
companion flange 29 includesholes 51 arranged to coincide with theorifices 45 of theoutlet flange 13. The attachingmembers 35 pass through both theholes 51 and theorifices 45. - When for example the attaching members are screws, the
head 37 of the screw bears on aface 53 of the companion flange turned opposite thecylinder head 15. - Thus, the flange and the companion flange are squeezed between the
head 47 of the screw on one hand, and thespacer 43 on the other. - Alternatively, the
hole 51 could be tapped, and thefastening member 35 could include anend portion 37 to be threaded screwed into the tappedhole 51. - A third embodiment of the invention is illustrated in
FIG. 3 . Only the points by which the third embodiment differs from the first will be described here. Elements that are identical or ensure the same function in both embodiments will be designated by the same references. - In the embodiment of
FIG. 3 , the turbocompressor does not include acompanion flange 29. Theduct 25 is directly welded on theoutlet flange 13. - However, the manifold includes an
intermediate flange 55 welded to theenclosure 11. Theoutlet 19 passes through both theintermediate flange 55 and theoutlet flange 13. - The
outlet flange 13 is pushed against a face of theintermediate flange 55 turned opposite thecylinder head 15. The outlet flange and theflange 55 are rigidly attached to each other bybolts 57. Theintermediate flange 55 is smaller than theoutlet flange 13. Thebolts 57 are arranged closer to theoutlet 19 than the attachingmembers 35. They are for example arranged like thebolts 31 of the first embodiment. - A fourth embodiment of the invention is illustrated in
FIG. 4 . Only the points by which this fourth embodiment differs from the first will be described here. Elements that are identical or ensure the same function in both embodiments will be designated by the same references. - In the fourth embodiment, the turbocompressor does not include a
companion flange 29, and the manifold does not include anintermediate flange 55. Theenclosure 11 of the manifold is welded directly on aface 59 of theoutlet flange 13 turned towards the cylinder head. Theduct 25 of the turbocompressor is rigidly attached, for example by a seam weld, on aface 61 of theoutlet flange 13 situated opposite thecylinder head 15. - In the embodiments of
FIGS. 1 to 4 , theoutlet flange 13 is planar, as is theinlet flange 9. The upstream and downstream flanges are substantially parallel to each other. - On the contrary, in the embodiment of
FIGS. 5 to 7 , theoutlet flange 13 extends substantially perpendicular to theinlet flange 9. For example, theinlet flange 9 extends in a substantially vertical and transverse plane, theoutlet flange 13 being in a substantially horizontal and transverse plane. In this case, theinlets 17 of the exhaust gas circulation channel through the manifold are oriented substantially longitudinally. Theoutlet flange 13 is placed above theenclosure 11, theoutlet 19 being oriented vertically upward. Theinlet duct 25 of the turbo manifold is situated above theoutlet flange 13. - Thus, the
outlet flange 13 has large opposite faces 63 and 65. Theflange 13 is also laterally defined by aface 67 turned towards thecylinder head 15. Theface 67 extends parallel to and opposite theflange 9. In the embodiment ofFIGS. 5 to 7 , thespacers 43 are inserted between theface 67 and theflange 9. - Moreover, in the embodiments of
FIGS. 1 to 4 , the attachingmembers 35 were substantially perpendicular to theflanges FIGS. 5 to 7 , the attachingmembers 35 are substantially parallel to theoutlet flange 13, i.e. parallel to the large faces 63 and 65. The attachingmembers 35 remain perpendicular to theinlet flange 9. - The
outlet flange 13 includes twoorifices 69 for receiving attachingmembers 35. Theseorifices 69 pass completely through the outlet flange from aface 71 opposite thecylinder head 15 to theface 67. In the case where the attaching members are screws, theheads 37 of the screws bear on theface 71. - The exhaust line described above has multiple advantages.
- Because the exhaust line comprises attaching means for attaching the outlet flange of the manifold directly to the engine block or the cylinder head, the stresses applied to the outlet flange are picked up by the cylinder head or the engine block through the attaching means. These stresses do not pass through the enclosure or the upstream flange.
- This makes it possible to reduce, if necessary, the thickness of the inlet flange and possibly the thickness of the manifold enclosure. This also makes it possible to dimension the means for attaching the inlet flange on the cylinder head or the engine block.
- This is even more important given that the outlet flange is generally staggered in relation to the upstream flange, with a significant overhang. Thus, the stresses applied to the outlet flange create a significant torsion torque at the attaching points of the inlet flange to the engine.
- Using elongated attaching members, for example screws, lug studs or any other similar attaching member, makes it possible to perform the attachment particularly simply. The attaching means does not include complicated support pieces. The attaching means does not significantly increase the weight of the exhaust line.
- Preferably, securing studs that are already provided on the engine are used to attach the upstream flange. In this case, the means for attaching the outlet flange to the engine practically does not increase the weight of the exhaust line at all.
- The outlet flange can have any sort of orientation of the upstream flange. It is not necessarily parallel to the upstream flange.
- Moreover, there are multiple possibilities for making the connection between the outlet flange and the enclosure of the manifold, and the connection between the outlet flange and the apparatus downstream therefrom, for example the turbocompressor.
- Thus, the invention makes it possible to obtain a connection between the outlet flange and the cylinder head or engine block particularly simply and economically.
- The exhaust line described above can have multiple alternatives.
- The outlet flange can be attached either to the engine block or the cylinder head of the engine.
- The number of attaching members varies. The means for attaching the outlet flange can comprise a single attaching member or two, three or even four or more attaching members.
- The attaching members can be arranged in variable positions in relation to the outlet flange. Thus, two attaching members can be arranged above the exhaust gas outlet. According to another alternative, two attaching members can be placed below the exhaust gas outlet. Two attaching members can also be provided on one of the sides of the exhaust gas outlet, or three attaching members arranged in a triangle, etc. The number of attaching members and their arrangement are determined by the stresses to be picked up by the outlet flange and transmitted to the cylinder head or engine block. It should be noted that attaching means for attaching the outlet flange of the manifold directly to the engine block or to the cylinder head refers to means capable of transmitting the majority of the stresses undergone by the outlet flange to the cylinder head or to the engine block, without passing through other elements of the manifold like the enclosure or the upstream flange.
- The members for attaching the outlet flange to the engine block or to the cylinder block can, depending on the case, pass through or not pass through the upstream flange. Indeed, on many engines, lug studs are provided to attach the upstream flange. The inlet flange therefore includes orifices in positions connected with the studs provided on the engines. Preferably, lug studs are used as members for attaching the outlet flange. Holes are thus provided in the outlet flange opposite holes in the inlet flange and connected with the lug studs of the engine. In this case, the traction exerted towards the engine by the end of the fastening member on the outlet flange is transmitted to the spacer, then to the upstream flange. The latter part is thus pushed against the cylinder head or the engine block.
- Moreover, other lug studs can be used exclusively to attach the inlet flange on the engine block or the cylinder head.
- To attach the outlet flange, it is possible to have both attaching members that pass through the inlet flange and others that do not pass through the upstream flange. It is also possible to have only attaching members that pass through the inlet flange or only attaching members that do not pass through the upstream flange.
- The downstream apparatus rigidly attached to the outlet flange of the manifold is not necessarily a turbocompressor. This apparatus can also be a catalytic purification device or any other element of the exhaust line.
- The manifold cannot have a single inlet flange, but include several separate flanges, one per exhaust gas inlet in the manifold.
- The manifold can include four, five, or more than five inlets, or fewer than four inlets.
- The
spacer 43 can have any sort of section. It can have a round, square, rectangular, etc. section. The section can be open or closed. - In the case where the attaching member passes through the upstream flange, the spacer bears on one hand on the inlet flange and on the other hand on the outlet flange.
- In the case where the attaching member does not pass through the upstream flange, the spacer can bear on one hand on the cylinder head or the engine block and on the other hand on the outlet flange.
- The spacer can be rigidly attached on the outlet flange and/or on the upstream flange, by any suitable means, for example by a seam weld.
- Moreover, the manifold can include contacts making the downstream manifold integral with the upstream manifold. Each contact thus has a first end rigidly attached, for example by welding, on the downstream manifold, and a second end attached to the upstream manifold, for example by welding. These contacts make it possible to transmit the stresses undergone by the outlet flange directly to the upstream flange.
- Depending on manufacturing constraints, the spacers are either attached to, or integral with the flange.
Claims (15)
1. An exhaust line provided to be connected to the engine of an automobile, the exhaust line (1) comprising:
a manifold (5) inwardly including at least one exhaust gas circulation channel (16) having an exhaust gas outlet (19), the manifold (5) comprising an outlet flange (13) through which the exhaust gas outlet (19) extends;
a downstream apparatus (7) having an exhaust gas inlet (27) connected to the exhaust gas outlet (19) of the manifold (5), the downstream apparatus (7) being rigidly connected to the outlet flange (13) of the manifold (5),
characterized in that the engine (3) comprises an engine block and a cylinder head (15), the exhaust line (1) comprising attaching means (33) for attaching the outlet flange (13) of the manifold (5) directly to the engine block or the cylinder head (15).
2. The exhaust line according to claim 1 , characterized in that the attaching means (33) comprises at least one elongated attaching member (35), having a first end portion (37) connected to the outlet flange (13) and a second end portion (39) connected to the engine block or the cylinder head (15).
3. The exhaust line according to claim 2 , characterized in that the attaching means (33) comprises at least one spacer (43) inserted along the or each attaching member (35) between the outlet flange (13) and the engine block or cylinder head (15), with or without the insertion of an inlet flange (9) of the manifold (5).
4. The exhaust line according to claim 2 , characterized in that the elongated attaching member (35) is of the type chosen from the group comprising a screw, a threaded rod, a lug stud, or a tierod.
5. The exhaust line according to claim 2 , characterized in that the circulation channel (16) of the exhaust gases has at least one exhaust gas inlet (17) capable of being connected to an outlet of the combustion chamber of the engine, the manifold (5) including at least one inlet flange (9) passed through by the exhaust gas inlet (17), the attaching member (35) passing through the inlet flange (9).
6. The exhaust line according to claim 5 , characterized in that the outlet flange (13) is substantially parallel to the or each inlet flange (9).
7. The exhaust line according to claim 5 , characterized in that the outlet flange (13) is inclined in relation to the or each inlet flange (9).
8. The exhaust line according to claim 1 , characterized in that the manifold (5) includes an enclosure (11) inwardly defining the exhaust gas circulation channel (16), the outlet flange (13) being welded to the enclosure (11).
9. The exhaust line according to claim 8 , characterized in that the downstream apparatus (7) has a companion flange (29) passed through by the exhaust gas inlet (27) of the downstream apparatus (7), the companion flange (28) being rigidly attached to the outlet flange (13) of the manifold.
10. The exhaust line according to claim 9 , characterized in that the companion flange (29) is attached to the outlet flange (18) of the manifold (5) using the means (33) for attaching the outlet flange (13) to the engine block or the cylinder head (15).
11. The exhaust line according to claim 8 , characterized in that the downstream apparatus (7) has an inlet duct (25) defining the exhaust gas inlet (27), the inlet duct (27) being welded on the outlet flange (13) of the manifold (5).
12. The exhaust line according to claim 1 , characterized in that the manifold (5) includes an enclosure (11) inwardly defining the exhaust gas circulation channel (16) and an intermediate flange (55) welded to the enclosure (11), the outlet flange (13) being rigidly attached to the intermediate flange (55) of the manifold (5).
13. The exhaust line according to claim 3 , characterized in that the elongated attaching member (35) is of the type chosen from the group comprising a screw, a threaded rod, a lug stud, or a tierod.
14. The exhaust line according to claim 3 , characterized in that the circulation channel (16) of the exhaust gases has at least one exhaust gas inlet (17) capable of being connected to an outlet of the combustion chamber of the engine, the manifold (5) including at least one inlet flange (9) passed through by the exhaust gas inlet (17), the attaching member (35) passing through the inlet flange (9).
15. The exhaust line according to claim 4 , characterized in that the circulation channel (16) of the exhaust gases has at least one exhaust gas inlet (17) capable of being connected to an outlet of the combustion chamber of the engine, the manifold (5) including at least one inlet flange (9) passed through by the exhaust gas inlet (17), the attaching member (35) passing through the inlet flange (9).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0852564 | 2008-04-16 | ||
FR0852564A FR2930287B1 (en) | 2008-04-16 | 2008-04-16 | EXHAUST LINE OF MOTOR VEHICLE. |
PCT/FR2009/050698 WO2009138623A1 (en) | 2008-04-16 | 2009-04-15 | Exhaust line for automobile |
Publications (1)
Publication Number | Publication Date |
---|---|
US20110107753A1 true US20110107753A1 (en) | 2011-05-12 |
Family
ID=40040063
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/988,171 Abandoned US20110107753A1 (en) | 2008-04-16 | 2009-04-15 | Exhaust line for automobile |
Country Status (6)
Country | Link |
---|---|
US (1) | US20110107753A1 (en) |
KR (1) | KR20110040749A (en) |
CN (1) | CN102084098B (en) |
DE (1) | DE112009000882T5 (en) |
FR (1) | FR2930287B1 (en) |
WO (1) | WO2009138623A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100162692A1 (en) * | 2008-12-18 | 2010-07-01 | Friedrich Boysen Gmbh & Co. Kg | Single-wall manifold |
US8839758B2 (en) | 2010-03-18 | 2014-09-23 | Avl List Gmbh | Internal combustion engine comprising a connecting assembly for a cylinder head |
WO2015035263A1 (en) * | 2013-09-06 | 2015-03-12 | James Schmitz | Engine manifold adapter |
US11396855B2 (en) * | 2020-03-31 | 2022-07-26 | Perkins Engines Company Limited | Spacer for use in an air intake system of an internal combustion chamber |
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US4000143A (en) * | 1971-03-03 | 1976-12-28 | Mead Johnson & Company | Substituted piperidines |
JPH0427709A (en) * | 1990-05-23 | 1992-01-30 | Nissan Motor Co Ltd | Exhaust manifold for internal combustion engine |
FR2849469A1 (en) * | 2002-12-27 | 2004-07-02 | Renault Sa | Exhaust manifold for motor vehicle internal combustion engine has single support inlet forming rigid connection between turbocompressor and head |
US6863154B2 (en) * | 2001-06-13 | 2005-03-08 | Honda Giken Kogyo Kabushiki Kaisha | Vibration absorbing apparatus for exhaust system of engine |
Family Cites Families (3)
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JP3283372B2 (en) * | 1994-02-23 | 2002-05-20 | トヨタ自動車株式会社 | Exhaust manifold of internal combustion engine |
SE0101451L (en) * | 2001-04-26 | 2002-04-09 | Press & Plaatindustri Ab | Manifold |
FR2856735B1 (en) | 2003-06-30 | 2005-09-02 | Renault Sa | ENGINE COMPRISING A CATALYST AND A TURBOCHARGER FIXED ON THE CYLINDER BLOCK BY MEANS OF A COMMON SUPPORT |
-
2008
- 2008-04-16 FR FR0852564A patent/FR2930287B1/en not_active Expired - Fee Related
-
2009
- 2009-04-15 US US12/988,171 patent/US20110107753A1/en not_active Abandoned
- 2009-04-15 CN CN200980121426XA patent/CN102084098B/en not_active Expired - Fee Related
- 2009-04-15 WO PCT/FR2009/050698 patent/WO2009138623A1/en active Application Filing
- 2009-04-15 DE DE112009000882T patent/DE112009000882T5/en not_active Withdrawn
- 2009-04-15 KR KR1020107025447A patent/KR20110040749A/en not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US4000143A (en) * | 1971-03-03 | 1976-12-28 | Mead Johnson & Company | Substituted piperidines |
JPH0427709A (en) * | 1990-05-23 | 1992-01-30 | Nissan Motor Co Ltd | Exhaust manifold for internal combustion engine |
US6863154B2 (en) * | 2001-06-13 | 2005-03-08 | Honda Giken Kogyo Kabushiki Kaisha | Vibration absorbing apparatus for exhaust system of engine |
FR2849469A1 (en) * | 2002-12-27 | 2004-07-02 | Renault Sa | Exhaust manifold for motor vehicle internal combustion engine has single support inlet forming rigid connection between turbocompressor and head |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100162692A1 (en) * | 2008-12-18 | 2010-07-01 | Friedrich Boysen Gmbh & Co. Kg | Single-wall manifold |
US8429906B2 (en) * | 2008-12-18 | 2013-04-30 | Friedrich Boysen Gmbh & Co. Kg | Single-wall manifold |
US8839758B2 (en) | 2010-03-18 | 2014-09-23 | Avl List Gmbh | Internal combustion engine comprising a connecting assembly for a cylinder head |
WO2015035263A1 (en) * | 2013-09-06 | 2015-03-12 | James Schmitz | Engine manifold adapter |
US20160230637A1 (en) * | 2013-09-06 | 2016-08-11 | Jim's Tooling Solutions, LLC | Engine Manifold Adapter |
US10683792B2 (en) | 2013-09-06 | 2020-06-16 | Jim's Tooling Solutions, LLC | Engine manifold adapter |
US11396855B2 (en) * | 2020-03-31 | 2022-07-26 | Perkins Engines Company Limited | Spacer for use in an air intake system of an internal combustion chamber |
Also Published As
Publication number | Publication date |
---|---|
FR2930287B1 (en) | 2012-09-28 |
KR20110040749A (en) | 2011-04-20 |
WO2009138623A1 (en) | 2009-11-19 |
DE112009000882T5 (en) | 2011-03-03 |
FR2930287A1 (en) | 2009-10-23 |
CN102084098A (en) | 2011-06-01 |
CN102084098B (en) | 2013-06-05 |
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Legal Events
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AS | Assignment |
Owner name: FAURECIA SYSTEMES D'ECHAPPEMENT, FRANCE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LEROY, VINCENT;KADANDALE, MURLI;SIGNING DATES FROM 20101123 TO 20101220;REEL/FRAME:025559/0804 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE |