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
  • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
  • F02M35/10288—Air intakes combined with another engine part, e.g. cylinder head cover or being cast in one piece with the exhaust manifold, cylinder head or engine block
• • 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
  • F02B75/00—Other engines
  • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
  • F02B75/18—Multi-cylinder engines
  • F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
• • 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
  • F02M33/00—Other apparatus for treating combustion-air, fuel or fuel-air mixture
  • F02M33/02—Other apparatus for treating combustion-air, fuel or fuel-air mixture for collecting and returning condensed fuel
• • 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
  • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
  • F02M35/10222—Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission
• • 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
  • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
  • F02M35/10281—Means to remove, re-atomise or redistribute condensed fuel; Means to avoid fuel particles from separating from the mixture
• • 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 an internal combustion engine with a crankcase, in which a crankshaft is rotatably mounted, on which at least one connecting rod is articulated, which carries a piston which is movable in a cylinder tube covered by a cylinder head, wherein gas exchange valves with an exhaust pipe are inserted into the cylinder head and a combustion air line are connected.
• the invention has for its object to provide an internal combustion engine with a combustion air line that avoids the disadvantages described above and also ensures a largely oil-free supply of combustion air to the individual cylinders.
• combustion air line has an oil trap at the geodetically lowest point, which is designed as a trough. It is thereby achieved that the oil entrained in the combustion air, which settles on the walls of the combustion air line as it flows through and thus separates from the combustion air, in the area below the Combustion air line arranged tub collects. The oil collected in this way can then be discharged in a suitable form and fed to the oil circuit of the internal combustion engine.
• the trough is made in one piece with the combustion air line and the cross-sectional area of the trough forms an additional area to the cross-sectional area of the combustion air line.
• the combustion air line is essentially tubular.
• the trough is at least approximately trapezoidal, the trapezoidal side walls of which are arranged below the equatorial plane in a straight extension of the walls of the combustion air line.
• the combustion air line is a charge air line and can be composed of charge air line sections.
• the combustion air line is a charge air line and can be composed of charge air line sections.
• an oil trap in the form of a trough can advantageously be used. Assembling the charge air line from individual charge air line sections is particularly advantageous for an internal combustion engine of a series manufactured in several variants if, for example, different numbers of cylinders are to be realized.
• a 16-cylinder V internal combustion engine it is possible and provided in a 16-cylinder V internal combustion engine to connect the charge air line sections of two adjacent cylinders of a row and the corresponding opposite row of cylinders to a charge air line section, so that this charge air line section supplies four cylinders with charge air.
• an 8-cylinder version for example, a 12-cylinder version and the aforementioned 16-cylinder version with identically designed charge air line sections can be realized.
• the trough is composed of trough sections corresponding to the charge air line sections. This training is suitable for a technically simple and inexpensive manufacture of a charge air line designed in this way.
• the trough sections have bulkheads at their longitudinal ends, which correspond to the contour of the tubular charge air line.
• these bulkheads ensure further stiffening of the trough sections together with the charge air line sections and, moreover, they bring about a calming of the flow in the trough sections.
• the oil separated from the charge air can settle in the trough and be carried away without being entrained by the air flow.
• a cooling water line is integrally formed on the charge air line at the geodetically highest point.
• the cooling water line is divided according to the charge air line sections. Through this cooling water line or these cooling water line sections, the cooling water, which is introduced into the line via connecting pieces from the cylinder heads of the internal combustion engine, is returned to a cooling water heat exchanger.
• the combination of the cooling water line with the charge air line thus contributes to a further reduction in the construction and manufacturing costs of the internal combustion engine, since the cooling water must be removed from the same cylinder heads, which in turn have to be supplied with charge air.
• the cooling water line connects directly to the charge air line, so that both lines have a common partition.
• This training ensures a further manufacturing technology and also cost-effective design.
• the charge air line and the cooling water line are made in one piece, but not with a common partition. This configuration achieves thermal insulation of both lines, which may be necessary in certain applications.
• the charge air line and the cooling water line have external fastening flanges. This design enables simple connection of the individual line sections to one another and at the end regions with corresponding covers or connecting pieces.
• the trough has recesses which are accessible from the outside at one end and which allow the insertion of fastening screws into fastening holes embedded in the bulkhead. Furthermore, in the opposite end of the tub in the bulkhead there are the mounting holes opposite
• the intake manifold connecting the charge air line with the inlet ducts of the individual cylinder heads are integrally formed on the cylinder heads and designed so that they rest on corresponding openings in the charge air line with the insertion of an elastic round seal. Due to the rigid design of the charge air line according to the invention and the selected arrangement of the charge air line in the V space, the intake manifold can be made very short and no additional screw connections between the intake manifold and the charge air line need be provided.
• Figure 1 A cross section through a charge air line inserted in the V-space of an internal combustion engine with molded-on trough and attached cooling water line and
• Figure 2 a charge air line section with molded cooling water line and tub in plan view.
• the charge air line 1 is inserted into the V space between the two rows of cylinders of a V-shaped internal combustion engine.
• the charge air line 1 is composed of individual charge air line sections 2.
• the individual charge air line sections have fastening sockets 3, through which fastening screws are guided, with which the assemblies to form the charge air line 1 are connected
• Charge air line sections 2 can be fastened in the V space of the internal combustion engine.
• the internal combustion engine also has a crankcase 4, only partially shown, on which an intermediate housing 5 is placed, which establishes the connection to a cylinder head 6.
• a piston 9, which is connected to a crankshaft via a connecting rod, can be moved in the cylinder tube 7.
• the cylinder tube 7 can be cooled by cooling water in the area surrounded by the intermediate housing 5, the cooling water being passed on from the intermediate housing into the cylinder head 6, which is also to be cooled. From the cylinder head 6, the cooling water is conducted at the highest point through a pipe section 11 into a cooling water line 10 arranged above the charge air line 1.
• the cooling water line 10 is arranged in one piece on the charge air line 1 via spacing feet 12. According to an embodiment, not shown, it is also provided to arrange the cooling water line 10 directly on the charge air line 1 with the omission of the feet 12, so that the two lines have a common partition.
• the charge air line 1 also has charge air connections 13 which cooperate with connecting pieces 14 to the inlet channels of the cylinder heads 6. These connecting pieces 14 lie on the charge air connections 13 without an additional screw connection, with the insertion of an elastic seal 15.
• a trough 16 is also formed on the charge air line 1 and is arranged at the geodetically lowest point of the charge air line 1.
• the trough 16 has an essentially trapezoidal shape, with the shorter trapezoidal leg at its geodetically lowest point.
• the trough 16 collects the oil which is discharged in the charge air line 1 and is deposited on the walls. This collected oil can then be removed in a suitable form. It can be seen in FIG. 1 that the trough surface does not influence, in particular does not reduce, the cross-sectional area of the charge air line 1, so that the flow of the charge air, for example by narrowing the cross section, is largely excluded.
• the trough has bulkheads 17 which correspond to the contour of the tubular charge air line, that is to say the bulkheads 17 have an arcuate configuration with the charge air line 1.
• the individual charge air line sections 2 according to FIG. 2 have flanges 18a, 18b at their front ends, into which openings are inserted, through which the charge air line sections 2 can be screwed together. Similar flanges are provided on the cooling water line 10.
• the tub 16, however, has at the front end 18b an externally accessible indentation 19, which the insertion of fastening screws into the Bulkhead allow 17 recessed mounting holes.
• blind hole threads opposite the fastening holes are embedded in the bulkhead 17. The fastening screws are screwed into this.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
• Cylinder Crankcases Of Internal Combustion Engines (AREA)
• Rigid Pipes And Flexible Pipes (AREA)
• Filtering Of Dispersed Particles In Gases (AREA)
• Exhaust-Gas Circulating Devices (AREA)
• Valve-Gear Or Valve Arrangements (AREA)
• Exhaust Silencers (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=6528558

Family Applications (1)

Country Status (6)

Families Citing this family (4)

Family Cites Families (15)

• 1994
  • 1994-09-19 DE DE4433285A patent/DE4433285A1/de not_active Withdrawn
• 1995
  • 1995-09-18 WO PCT/EP1995/003661 patent/WO1996009469A1/fr active IP Right Grant
  • 1995-09-18 EP EP95933384A patent/EP0782667B1/fr not_active Expired - Lifetime
  • 1995-09-18 DK DK95933384T patent/DK0782667T3/da active
  • 1995-09-18 DE DE59502847T patent/DE59502847D1/de not_active Expired - Lifetime
  • 1995-09-18 AT AT95933384T patent/ATE168449T1/de active
• 1997
  • 1997-03-18 FI FI971135A patent/FI107754B/fi not_active IP Right Cessation

Non-Patent Citations (1)

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