• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:AT510350A2
    申请号:T11302011
    申请日:2011-08-04
    公开日:2012-03-15
    发明作者:Maximilian Bierl；Hans-Peter Graf
    申请人:Man Diesel & Turbo Se；
    IPC主号:
    专利说明:

    The invention relates to a trained according to the preamble of claim 1 exhaust pipe for an internal combustion engine.
    An exhaust pipe of the type mentioned above is e.g. from US 2 014 355 A known. In this exhaust pipe, the pipe assembly has a formed as a separate component deformation compensator, which is introduced via threaded flanges such in the piping arrangement that it connects two adjacent separate pipe segments of the pipe assembly releasably together.
    In such an exhaust pipe, for each engagement of a deformation compensator, corresponding connection means, such as e.g. Flanges or clamp connections, be provided, which increases the complexity of the exhaust pipe.
    The invention has for its object to provide an exhaust pipe according to the preamble of claim 1, which has a lower complexity compared to the prior art.
    This is achieved with an exhaust pipe according to claim 1. Further developments of the invention are defined in the dependent claims.
    According to the invention, an exhaust pipe for an internal combustion engine has a pipeline arrangement and at least one deformation compensator arranged within a longitudinal extension of the pipeline arrangement for accommodating in particular temperature-induced deformations of the pipeline arrangement. The exhaust pipe according to the invention is characterized in that the pipe assembly has at least one laterally disposed on a wall of this (or radial) cylinder connection for the exhaust gas of a cylinder of the internal combustion engine and that the pipe assembly and the at least one deformation compensator are integrally formed with each other, i. are made as a single component from a single common material structure.
    Due to the one-piece design of the piping arrangement with each provided deformation compensator, according to the invention no connection means need to be provided, which considerably reduces the complexity of the piping arrangement and thus its weight and costs through fewer components.
    The weight reduction reduces the oscillating mass of the exhaust pipe and its heat capacity. Due to the lower oscillating mass, vibration influences on cylinder heads of the internal combustion engine and a lateral excitation of each deformation compensator are reduced. With the lower heat capacity allows the exhaust pipe according to the invention a shorter warm-up phase for the internal combustion engine and a lower response time of a possibly downstream catalyst.
    According to one embodiment of the invention, a plurality of cylinder connections according to the invention are provided along the longitudinal extent of the pipeline arrangement, so that the pipeline arrangement is designed as a manifold for the exhaust gas of several cylinders of the internal combustion engine.
    According to a further embodiment of the invention, a plurality of deformation compensators according to the invention are arranged at an axial distance from one another along the longitudinal extent of the pipeline arrangement. 3
    According to yet another embodiment of the invention, each deformation compensator in the form of a compensation structure is shaped by deformation into the wall of the pipeline arrangement, wherein at least one compensation structure-free section of the pipeline arrangement adjoins the deformation compensator. The compensation structure is preferably designed in the form of a wave structure or bellows structure.
    Preferably, the piping arrangement may be e.g. are produced by round rolling and subsequent welding of sheet metal, wherein the compensation structure is formed during the round rolling, i. is integrated in a roll section.
    According to a further embodiment of the invention, a plurality of compensation-structure-free sections according to the invention are arranged at an axial distance from one another along the longitudinal extent of the pipeline arrangement. Preferably, deformation compensators and compensation structure-free sections alternate with one another along the longitudinal extent of the pipeline arrangement.
    According to one embodiment of the invention, therefore, a plurality of deformation compensators alternating with compensation structure-free sections are provided integrally or as an integral unit in the pipeline arrangement.
    According to a further embodiment of the invention, each cylinder connection has a receiving opening formed in the wall of the pipe arrangement into which an exhaust pipe of the cylinder of the internal combustion engine can be inserted.
    In this way, for the inflow geometry at an end of the exhaust pipe to be inserted a larger constructive • • •
    Given freedom, while low tolerances are feasible.
    According to yet another embodiment of the invention, the exhaust pipe is inserted by a predetermined length of its in the receiving opening, so that it branches off at a predetermined angle, preferably an angle of greater than 0 degrees and less than 90 degrees to a longitudinal axis of the pipe assembly, radially from the pipe assembly, wherein the exhaust pipe is externally circumferentially welded to the pipe assembly.
    Preferably, each cylinder port is formed so that in an inserted state of the exhaust pipe of the cylinder, an inflow direction of the exhaust pipe is at an angle of greater than 0 degrees and less than 90 degrees to a main flow direction of the piping arrangement.
    According to yet another embodiment of the invention, each cylinder port is shaped as a radial tubular projection of the pipe assembly by forming from the wall thereof, wherein the receiving opening is formed by the tubular projection.
    Due to the shaping out of the cylinder connection, the desired inflow direction of the exhaust pipe can be given the same way in a simple manner so that complicated casting designs can be dispensed with.
    According to one embodiment of the invention, the at least one cylinder connection is formed as inserted into the wall of the pipe assembly pipe saddle, wherein the receiving opening is formed by the pipe saddle. 5 «· · ·» »· · · ·« «* * ·
    Such a pipe saddle can be easily retrofitted to the pipe assembly and can be e.g. As a standard part, the desired inflow direction of the exhaust pipe is equal to predetermined, so that complicated castings can be omitted.
    According to another embodiment of the invention, in an inner circumference of each deformation compensator is the
    Piping axially inserted in each case a guide tube, which bridges the compensation structure of the deformation compensator axially. In this way, if necessary, viable turbulences of the exhaust gas can be avoided by the compensation structure.
    According to a further embodiment of the invention, each compensating structure-free section has a predetermined inner diameter, wherein the respective guide tube has an outer diameter which is dimensioned such that the guide tube is supported free of radial play on the inner diameter of the compensation structure-free section.
    Thus, each guide tube can be easily and safely held radially in the pipe assembly and need only be selectively fixed against displacement.
    According to yet another embodiment of the invention, each cylinder port is formed in a compensation structure-free section of the piping arrangement.
    According to yet another embodiment of the invention, the piping arrangement is double-walled. In this way, excessive heating of the exhaust pipe and downstream turbocharger excessive energy loss of the exhaust gas can be prevented.
    The invention expressly extends to such embodiments, which are not given by combinations of features of explicit back references of the claims, with which the disclosed features of the invention - as far as is technically feasible - can be combined with each other.
    In the following the invention will be described in more detail by means of preferred embodiments and with reference to the attached figures.
    Fig.l shows a schematic side view of an unilaterally provided with cylinder connections for the exhaust of cylinders of an internal combustion engine exhaust pipe.
    2 shows a schematic side view of an exhaust pipe provided on both sides with cylinder connections for the exhaust gas of cylinders of an internal combustion engine.
    3 shows a schematic side view of an exhaust pipe according to an embodiment of the invention.
    4 shows a schematic side view of an exhaust pipe according to another embodiment of the invention.
    5 shows a schematic side view of an exhaust pipe according to yet another embodiment of the invention. 6 shows a schematic side view of an exhaust pipe according to yet another embodiment of the invention.
    7 shows a schematic side view of an exhaust pipe according to a further embodiment of the invention.
    Fig. 1 and Fig. 2 show two examples of exhaust pipes 100, 100a for an internal combustion engine (not shown) heretofore manufactured by the applicant. 7
    As shown in Fig. 1, the exhaust conduit 100 has a tubing assembly 101 comprising a plurality of separate tube segments 102 of e.g. Has cast iron. Within a longitudinal extent of the pipe arrangement 101, a deformation compensator 105 (only one shown in FIG. 1) for accommodating deformations of the pipe arrangement 101 is respectively arranged between two adjacent pipe segments 102. For connection of the individual pipe segments 102 and deformation compensators 105, respective clamping sleeve connections 103 are provided at respective longitudinal ends of these components, which are held together with tension clamps 104.
    Each tube segment 102 is laterally attached to a wall of which e.g. molded cylinder port 106 for the exhaust gas of a cylinder (not shown) of the internal combustion engine.
    Likewise, the exhaust conduit 100a of Fig. 2 comprises a pipeline assembly 101a having a plurality of separate tube segments 102a of e.g. Has cast iron. Within a longitudinal extent of the pipe arrangement 101a, a deformation compensator 105a for accommodating deformations of the pipe arrangement 101a is arranged in each case between two adjacent pipe segments 102a. To connect the individual tube segments 102a and deformation compensators 105a, clamped connections 103a are respectively provided at respective longitudinal ends of these components, which are held together with clamps 104a.
    Each tube segment 102 has on both sides on a wall whose several e.g. molded cylinder ports 106a for the exhaust gas of cylinders (not shown) of the internal combustion engine. δ
    • * * m # * ♦ · ·
    By the invention may u.a. the clamp clips 103, 103a and the clamps 104, 104a and corresponding welds omitted.
    Embodiments of the invention will now be described with reference to FIGS.
    3 shows a first embodiment of an exhaust pipe 1 according to the invention for an internal combustion engine (not shown)
    The exhaust pipe 1 has a pipe assembly 10 and within a longitudinal extent of the pipe assembly 10, a plurality of deformation compensator 20 for receiving deformations of the pipe assembly 10.
    Deformation compensators serve u.a. to compensate for temperature-induced axial length changes, radial misalignments and possibly to dampen vibrations. Examples of deformation compensators are e.g. in DE 10 2004 021 799 B3.
    The tubing assembly 10 and the strain compensators 20 are integrally formed with each other, i. molded from a continuous tube.
    Each deformation compensator 20 is e.g. formed by rolling as a wave-shaped or bellows-shaped compensation structure in a wall 11 of the pipe assembly 10, wherein at least one compensation structure-free portion 30 of the pipe assembly 10 adjacent to each deformation compensator 20. 9
    As can be seen from FIG. 3, a plurality of deformation compensators 20 according to the invention and a plurality of compensation structure-free sections 30 according to the invention are arranged at axial distance from one another along the longitudinal extent of the pipeline arrangement, wherein deformation compensators 20 and compensation structure-free sections 30 alternate with one another.
    Accordingly, in the piping arrangement 10, a plurality of deformation compensators 20 alternating with compensation structure-free sections 30 are provided in one piece or as an integral unit.
    As can also be seen from FIG. 3, each compensation structure-free section 30 has laterally on a single longitudinal side of the wall 11 of the pipeline arrangement 10 a cylinder connection 40 for the exhaust gas of a cylinder {not shown) of the internal combustion engine.
    Thus, along the longitudinal extent of the
    Pipe assembly 10 a plurality of cylinder ports 40, 40 are provided so that the pipe assembly 10 is formed as a manifold for the exhaust gas of several cylinders of the internal combustion engine.
    Each cylinder port 40 has a formed in the wall 11 of the pipe assembly 10 receiving opening 41, into which an exhaust pipe 50 of each cylinder of the internal combustion engine inserted or -ein -ein predetermined length of the inserted and externally circumferentially welded to the pipe assembly 10. 10
    As can be seen in Figure 3, each exhaust pipe 50 is insertable so as to be inserted at a predetermined angle, here e.g. an angle of about 55 degrees to a longitudinal axis L of the pipe assembly 10, branches off radially from the pipe assembly 10. Thus, each cylinder port 40 is formed so that in an inserted state of the exhaust pipe 50, an inflow direction ER of the exhaust pipe 50 extends at an angle of about 55 degrees to a main flow direction HR of the pipe assembly 10.
    According to the first embodiment of the invention shown in Figure 3, each cylinder port 40 is preferably formed as a radial tubular projection or dome of the pipe assembly 10 hydraulically molded out of the wall 11, wherein the receiving opening 41 is formed by the tubular projection.
    In an inner circumference of each deformation compensator 20 of the pipe assembly 10, a guide tube 60 is axially inserted, which bridges the compensation structure of the respective deformation compensator 20 axially or along the longitudinal extent.
    The compensation structure-free sections 30 have a predetermined inner diameter 31, wherein the guide tubes 60 at an expanded end of these each have an outer diameter 61 which is dimensioned so that each guide tube 60 is supported without play radially on the inner diameter 31 of the respective compensation structure-free portion 30. For fixing the position, the guide tubes 60 are additionally provided, e.g. by means of one or more screws (not shown) attached to the pipe assembly 10. 11
    4 shows a second embodiment of an exhaust pipe la according to the invention for an internal combustion engine (not shown). The exhaust pipe la according to Figure 4 is identical to the exhaust pipe 1 according to Figure 3 except for a few differences. For this reason, only the differences will be described below, with the same reference numerals being used in FIG. 4 for components that are identical to FIG.
    In contrast to FIG. 3, according to FIG. 4, each cylinder connection 40a is designed as a pipe saddle inserted into the wall 11 of the pipe arrangement 10, the receiving opening 41a being formed by the pipe saddle.
    FIG. 5 shows a third embodiment of an exhaust line 1b according to the invention for an internal combustion engine (not shown). The exhaust pipe 1b according to FIG. 5 is identical, except for a few differences, to the exhaust pipe 1 according to FIG. 3 or to the exhaust pipe 1a according to FIG. For this reason, only the differences will be described below, with the same reference numerals being used in FIG. 5 for components which are identical to those of FIG. 3 and FIG.
    In contrast to FIGS. 3 and 4, according to FIG. 5, each compensation structure-free section 30 has a cylinder connection 40 (ie two opposite and axially offset cylinder connections 40) for the exhaust gas laterally on two diametrically opposite longitudinal sides of the wall 11 of the pipeline arrangement 10 Such an arrangement of cylinder ports 40 is suitable, for example, for internal combustion engines designed as a V-engine 12 * * 4t * · + · «*
    • * * * * * »• • · f ···« »Λ m · ·
    FIG. 6 shows a fourth embodiment of an exhaust gas line lc according to the invention for an internal combustion engine (not shown). The exhaust pipe 1c according to FIG. 6 is identical, except for a few differences, to the exhaust pipe 1 according to FIG. 3 or to the exhaust pipe 1a according to FIG. For this reason, only the differences will be described below, with the same reference numerals being used in FIG. 6 for components which are identical to those of FIG. 3 and FIG.
    In contrast to FIGS. 3 and 4, according to FIG. 6, the cylinder connections 40 of the compensation structure-free sections 30 have two opposite directions. In other words, the respective cylinder port 40 of successive Kompensationsstrukturfreien sections 30 is arranged alternately laterally on two diametrically opposite longitudinal sides of the wall 11 of the pipe assembly 10. Such an arrangement of cylinder connections 40 is also suitable, for example, for internal combustion engines designed as V-engines.
    7 shows a fifth embodiment of an exhaust line ld according to the invention for an internal combustion engine (not shown). The exhaust pipe ld shown in FIG. 7 shows possible modifications of the first to fourth embodiments (FIGS. 3-6) of the invention. In the following, therefore, only the differences will be described, with the same reference numerals being used for components 3 to 6 in FIG.
    As can be seen from FIG. 7, according to a first modification, some or all of the guide tubes '60' may be omitted. Additionally or alternatively, according to a second modification for high exhaust gas pressures, a tubular reinforcement 70 may be attached to the outside of some or all of the compensation structure-free sections 30 and / or some or all of the exhaust pipes 50.
    According to a sixth embodiment of the invention not shown in the figures, the exhaust pipes 1 to Id of the first to fifth embodiments of the invention or their pipe arrangement 10 may be double-walled. 14 14 • · > · Μ I · t · *
    LIST OF REFERENCES: I exhaust pipe la exhaust pipe lb exhaust pipe lc exhaust pipe
    Id Exhaust pipe 10 Pipe arrangement II Wall 20 Deformation compensator 30 Compensation structure-free section 31 Inner diameter 40 Cylinder connection 40a Cylinder connection 41 Receiving opening 41a Receiving opening 50 Exhaust pipe 60 Conducting pipe 61 Outer diameter 70 Pipe reinforcement 100; 100a exhaust pipe 101; 101a piping arrangement 102; 102a pipe segment 103; 103a clamp clamp 104; 104a clamp 105; 105a deformation compensator 106; 106a Cylinder connection L Longitudinal axis ER Inflow direction HR Main flow direction
    权利要求:
    Claims (10)
    [1]
    15 claims: 1. exhaust pipe {1, la, lb, lc, ld) for an internal combustion engine, with a pipe assembly (10) and at least one within a longitudinal extent of the pipe assembly (10) arranged deformation compensator (20) for receiving deformations of the piping arrangement ( 10), characterized in that the piping arrangement (10) has at least one laterally on a wall (11) of this arranged cylinder port (40; 40a) for the exhaust gas of a cylinder of the internal combustion engine and that the piping arrangement (10) and the at least one deformation compensator ( 20) are integrally formed with each other.
    [2]
    Second exhaust pipe (1, la, lb, lc, ld) according to claim 1, wherein the at least one deformation compensator (20) in the form of a compensation structure in the wall (11) of the pipe assembly (10) is formed, and wherein the deformation compensator ( 20) at least one compensation structure-free portion (30) of the pipe assembly (10) adjacent.
    [3]
    3. exhaust pipe (1, la, lb, lc, ld) according to claim 2, wherein the at least one cylinder port (40, 40a) in the wall (11) of the pipe assembly (10) formed receiving opening (41, 41a), in an exhaust pipe (50) of the cylinder of the internal combustion engine can be inserted.
    [4]
    4. exhaust pipe (1, la, lb, lc, ld) according to claim 3, wherein the exhaust pipe (50) by a predetermined length of which in the receiving opening (41, 41 a) is inserted, so that in 16 a predetermined angle radially from the pipe assembly (10) branches off, and wherein the exhaust pipe (50) is externally circumferentially welded to the pipe assembly (10).
    [5]
    5. exhaust pipe (1, 1b, lc, ld) according to claim 3 or 4, wherein the at least one cylinder port (40) is formed as a radial tubular projection of the pipe assembly (10) from the wall thereof, and wherein the receiving opening (41) of the tubular projection is formed.
    [6]
    6. exhaust pipe (la) according to claim 3 or 4, wherein the at least one cylinder port (40a) as in the wall (11) of the pipe assembly (10) inserted pipe saddle is formed, and wherein the receiving opening (41a) of the pipe Saddle is formed.
    [7]
    7. exhaust pipe (1, la, 1b, lc, ld) according to one of claims 2 to 6, wherein in an inner periphery of the at least one deformation compensator (20) of the pipe assembly (10) axially a guide tube (60) is inserted, which is the compensation structure the at least one deformation compensator (20) axially bridged.
    [8]
    8. The exhaust pipe (1, la, lb, lc, ld) according to claim 7, wherein the at least one compensation structure free portion (30) has a predetermined inner diameter (31), and wherein the guide tube (60) has an outer diameter (61) is dimensioned such that the guide tube (60) is supported without play radially on the inner diameter (31) of the compensation structure-free portion (30). 17
    [9]
    9. exhaust pipe (1, la, lb, lc, ld) according to one of claims 2 to 8, wherein the at least one cylinder port (40; 40a) in the at least one compensation structure free portion (30) of the pipe assembly (10) is formed.
    [10]
    10. exhaust pipe (1, la, lb, lc, ld) according to one of claims 1 to 9, wherein the pipe assembly (10) is double-walled.
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    同族专利:
    公开号 | 公开日
    FI20115818A0|2011-08-23|
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    JP2012047176A|2012-03-08|
    DE102010039751A1|2012-03-01|
    JP5524150B2|2014-06-18|
    CN102434259A|2012-05-02|
    FI20115818A|2012-02-26|
    引用文献:
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    JPS5497623U|1977-12-23|1979-07-10|
    JPS5618017A|1979-07-19|1981-02-20|Mitsubishi Motors Corp|Exhaust pipe for vehicle|
    DE3500568A1|1985-01-10|1986-07-10|Witzenmann GmbH, Metallschlauch-Fabrik Pforzheim, 7530 Pforzheim|Exhaust manifold|
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    DE102004021799B3|2004-05-03|2005-12-29|Mtu Friedrichshafen Gmbh|Exhaust compensator|
    FR2870886A1|2004-05-25|2005-12-02|Renault Sas|Exhaust manifold for e.g. diesel engine, has inlet pipes with wide annular zones and connected with exhaust orifices using inlet flange that is integrated with outlet flange used for connecting outlet pipe to exhaust gas conduit|
    JP4537842B2|2004-12-16|2010-09-08|株式会社ヒロテック|Exhaust pipe joint and manufacturing method thereof|
    DE102008010071A1|2008-02-19|2009-08-20|Man Nutzfahrzeuge Ag|Compact exhaust aftertreatment system|
    JP2010001838A|2008-06-20|2010-01-07|Futaba Industrial Co Ltd|Exhaust manifold|AU2789989A|1987-10-28|1989-05-23|Pro-Neuron, Inc.|Acylated uridine and cytidine and uses thereof|
    US5470838A|1987-10-28|1995-11-28|Pro-Neuron, Inc.|Method of delivering exogenous uridine or cytidine using acylated uridine or cytidine|
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    DE102012218747A1|2012-10-15|2014-04-17|Wacker Chemie Ag|Method of depositing polycrystalline silicon|
    法律状态:
    2016-05-15| REJ| Rejection|Effective date: 20160515 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102010039751A|DE102010039751A1|2010-08-25|2010-08-25|Exhaust pipe for an internal combustion engine|
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