Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
  • F02M35/10—Air intakes; Induction systems
  • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
  • F02M35/10144—Connections of intake ducts to each other or to another device
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
  • F02M35/10—Air intakes; Induction systems
  • F02M35/104—Intake manifolds
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
  • F02M35/10—Air intakes; Induction systems
  • F02M35/104—Intake manifolds
  • F02M35/116—Intake manifolds for engines with cylinders in V-arrangement or arranged oppositely relative to the main shaft

Definitions

• the invention relates to a device for supplying air to a multi-cylinder engine cylinder head comprising two rows of air intake ducts to the cylinders.
• such an air supply device comprises a first and a second air distributor arranged, or to arrange, and to fix on the cylinder head, along the air mouths. said air inlet ducts of said cylinder head, which communicate with the combustion chambers of the cylinders.
• Such air distributors formed by a first and a second air distributor are typically present on in-line V-engines, for example 6-cylinder engines.
• the air distributors are supplied with air via an air distributor means.
• the air distributor means is integrated in one piece with one of the air distributors and is sealingly connected to the other air distributor via a connection via fitting using an O - ring for sealing.
• the object of the invention is to propose a solution: - which makes it possible to reduce the volume of the parts involved,
• the aforementioned air supply device which therefore comprises a first and second air distributors, further comprises, replacing the air distributor means integrated with one of these distributors, an air distributor comprising at least two air outlets arranged, or arranged, in front of the respective air mouth of said distributors, respectively, this independent air distributor and the air distributors further comprising, in the immediate environment of their said mouths, and to ensure a relative positioning required and a fixation between them: - between the air distributor and one of the air distributors, first complementary means of positioning and support sliding pivoting along an axis of engagement between the air distributor and the distributor, with: a precise relative centering, substantially without play, along this axis of engagement, a possible pivot about said axis and a tran slation along this same axis, and, between said air distributor and the other air distributor:
• second complementary positioning and support means comprising:
• the air supply means of the cylinders will therefore comprise, overall, three main parts: the upstream air distributor and the two downstream air distributors, with positioning means, centering and fixing optimized.
• the air distributors are each connected, at a first end of their direction of elongation, to an upstream air distributor and / or, at a second downstream end, opposite the first, to an air transfer pipe promoting the good distribution of air there.
• one or other of these "air distributor” and “air transfer manifold” can be made as before and it is recommended that this implementation is preferably applied at least to the input air distributor (upstream) which will therefore include several internal conduits (a priori divided into three) with three air mouths, one receiving external air (typically to from a throttle body), the other two being therefore arranged in front of the corresponding air mouth of the splitters.
• both the upstream air distributor and the aforementioned downstream air transfer pipe (s) are made with the positioning, centering and fixing means presented above. .
• the first complementary sliding pivot positioning means between the air distributor and the air distributor concerned will comprise an annular skirt protruding around the corresponding mouth of the air distributor, this skirt closely covering an outer edge. of the corresponding mouth of the distributor facing it, to ensure a substantially radial fit without interference, along said axis of engagement.
• the first complementary sliding pivot positioning means has a bore having a section adapted to provide said accurate relative centering along the axis of engagement between the distributor and the air distributor concerned, - and that the additional support means comprise two bearing surfaces respectively formed on the distributor and the other distributor, to provide a flat support between them, substantially perpendicular to the engagement axis along which extends 1 aforesaid bore.
• the third complementary fixing means comprise three screws: one (at least) of these screws ensuring the stop in rotation and thus defining said locating means, in cooperation with a hole; non-circular formed on at least one of the distributor and the dispatcher considered, - these screws further ensuring, together, a tight attachment between the distributor and the corresponding distributor, also blocking the distributor relative to the other distributor.
• FIG. 1 is a schematic perspective and exploded view of a portion of an engine according to the invention
• FIG. 2 shows the three parts constituted by the upstream distributor of the air intake and the two distributors together, the air transfer manifold appearing in phantom lines at the top of the figure, which corresponds to a perspective opposite to that of FIG. of Figure 1
• FIG. 3 is a front view, in the direction of the arrow III of FIG. 1, of the only upstream inlet air distributor;
• FIG. 4 is a partial view in section along the line IV-IV of Figure 3, the connections between the distributor considered and each distributor being shown separately, independently of one another.
• FIG. 1 shows two air distributors 1, 3 designed, in a manner known per se, for distributing the intake air to the two sets of air intake mouths (marks 5a, 5b, 5c for one of them) of a cylinder head 9 of multicylinder engine 11 covering a crankcase of the engine.
• Each air distributor 1, 3 comprises at least one air intake mouth and several mouths, or groups of mouths, distribution or air outlet to said corresponding air mouth of the cylinder head 9.
• These mouths have end surfaces, such as 15 for the mouthpiece Id, which serves as a support, and 17 for the mouthpiece 3d, which has, along the axis of engagement 30, a clearance e_ with the facing surface 25 ( see Figure 4).
• Air distributor side marked 19 in Figures 1, 3 and 4, there are three air openings, since it is here an air intake distributor.
• Figure 1, 21a identifies the air inlet zone in the distributor 19 (see also Figure 3). The air is thus admitted substantially parallel to the axes 10 and 30.
• these surfaces 17 and 25 will therefore, axially, in the immediate vicinity, one in front of the other, when the parts 1, 3 and 19 will be fixed together, after being correctly positioned and centered, according to the invention.
• said surfaces will be planes.
• these planes are perpendicular to the axis 10 or 30 considered, the axis 30 constituting the axis of engagement along which we will approach, and here engage, the outlet mouth of the distributor 19 on the mouthpiece 3d, sliding pivot.
• said surfaces or support planes will cooperate in pairs to correctly connect and position the air distributor 19 vis-à-vis each of the two distributors 1, 3, with the mouths and surfaces concerned in support or face to face.
• these co-operating surfaces are completed:
• the fitting 27 is favorably made, as illustrated in FIGS. 1, 3 and 4, by a skirt 37 formed around the mouth 21c, this over the entire periphery of the corresponding end edge.
• this skirt 37 covers the end of the mouthpiece 3d of the distributor tightly and externally, until it is therefore placed axially as close as possible to the end surfaces 17, 25, as explained above, the seal 35 then being compressed radially.
• three screws 39a, 39b, 39c have been used which can pass for at least some with clearance (in their unsealed state) two sets of three holes, such as 41a and 43a for the screw 39a which will serve to ensure the locating effect sought, in connection with the corresponding orifice 41a and its vis-à-vis 43a, said holes being formed through the rim of one side of the mouth Id, and the other of the mouth 21b, and thus through the aforementioned surfaces 15 and 23 transverse to the axis 10 common to these two mouths.
• the threads of the screws 39a, 39b, 39c engage threads formed in the three holes (such as 43a) of the flange 15 of the distributor 1.
• the displacement 29 is stopped at the location of the bearing surface 15, by the engagement of the screws in their holes, such as the hole 41a, here formed in the outer rim 45 of the air distributor.
• the screw 39a also serves for locating, the three screws forming here the fastening means 33 can then be clamped on the distributor 1, through their corresponding holes, to ensure the desired tight attachment.
• the two air distributors 1, 3 can also be interconnected by the same isostatic assembly system acting without deformation of the parts, since at this end it will be provided, as illustrated in Figure 2, to connect their corresponding mouths 50, 51, via an air transfer pipe 53.
• This air transfer pipe 53 will therefore preferably bear the same means 27, 31, 33 for positioning and centering (sliding pivot, surface support, locating,) and fastening as the distributor 19.
• the axis of engagement (previously 30) between the air transfer tube 53 and the air distributor 3 has been identified 60.
• the difference between the distributor 19 and the air transfer manifold 53 here relates to their internal construction.
• the distributor 19 here comprises three main air ducts: one for admission (on which opens its air intake opening 21a) the other two bringing air to the respective outlet mouths 21b and 21c, these three conduits of course communicating with each other inside the dispenser.
• the air transfer tube 53 contains only one duct, with an opening, respectively 55 and 57, at each end, to let air circulate between the two air distributors 1 and 3, respectively.
• Figure 2 at 59, which has been a recirculation air inlet (EGR) can arrive transversely in the air intake manifold 19.
• EGR recirculation air inlet

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Fuel-Injection Apparatus (AREA)
• Actuator (AREA)
• Cylinder Crankcases Of Internal Combustion Engines (AREA)
• Compressor (AREA)
• Magnetic Resonance Imaging Apparatus (AREA)
• Valve-Gear Or Valve Arrangements (AREA)

Applications Claiming Priority (2)

Publications (2)

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• 2005
  • 2005-10-07 FR FR0510292A patent/FR2891874B1/fr not_active Expired - Fee Related
• 2006
  • 2006-10-02 DE DE602006016142T patent/DE602006016142D1/de active Active
  • 2006-10-02 CN CN200680041480XA patent/CN101305179B/zh not_active Expired - Fee Related
  • 2006-10-02 KR KR1020087010752A patent/KR20080069986A/ko active IP Right Grant
  • 2006-10-02 WO PCT/FR2006/050977 patent/WO2007042706A1/fr active Application Filing
  • 2006-10-02 EP EP06831263A patent/EP1934461B1/de not_active Not-in-force
  • 2006-10-02 AT AT06831263T patent/ATE477414T1/de not_active IP Right Cessation
  • 2006-10-02 JP JP2008534055A patent/JP2009511800A/ja active Pending
  • 2006-10-02 US US12/089,442 patent/US8006664B2/en not_active Expired - Fee Related

Non-Patent Citations (1)

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