Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
  • F01M13/00—Crankcase ventilating or breathing
  • F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
  • F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
  • F01M13/022—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure using engine inlet suction
  • F01M13/023—Control valves in suction conduit
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
  • F01M13/00—Crankcase ventilating or breathing
  • F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
  • F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
  • F01M13/022—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure using engine inlet suction
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
  • F01M13/00—Crankcase ventilating or breathing
  • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
  • F01M13/00—Crankcase ventilating or breathing
  • F01M2013/0038—Layout of crankcase breathing systems
  • F01M2013/0044—Layout of crankcase breathing systems with one or more valves
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
  • F01M13/00—Crankcase ventilating or breathing
  • F01M2013/0038—Layout of crankcase breathing systems
  • F01M2013/005—Layout of crankcase breathing systems having one or more deoilers
  • F01M2013/0061—Layout of crankcase breathing systems having one or more deoilers having a plurality of deoilers
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
  • F01M13/00—Crankcase ventilating or breathing
  • F01M2013/0077—Engine parameters used for crankcase breather systems
  • F01M2013/0094—Engine load
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
  • F01M13/00—Crankcase ventilating or breathing
  • F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
  • F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
  • F01M2013/027—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure with a turbo charger or compressor

Definitions

• the invention relates to an apparatus and a method for Kurbelgehauseentluftung and return the Entluftungsgase in the combustion chamber of a supercharged internal combustion engine
• combustion gases between the cylinders and the piston rings can escape into the spa.
• gases are referred to as blow-by gases and can build up considerable pressure within the body of the spa so that venting of the body is required.
• By-gases in the crankcase are loaded with motor oil, which is why they should not be discharged into the environment and usually pass through an oil separator to finally be fed into the intake manifold of the internal combustion engine From here, the gases are directed back into the combustion chambers of the cylinder
• pressure control valves or variable throttles with or without sudtschfunktion zabe PCV valves can be provided about such control valves, the negative pressure in the intake tract is used to Suction gases from the crankcase
• a turbocharger is provided, the extracted gas is sucked in Teugastbet ⁇ eb the downstream of the turbocharger in the intake, and at full load upstream of the turbocharger in the intake check valves at full load must prevent the pressure on the so-called part-load venting in the Kurbeigehause is transmitted
• the extraction of the gases takes place either in the area of the bottom of the
• each cylinder row is associated with a turbocharger, wherein a common intake manifold is provided for both rows
• a common oil separator for both rows of cylinders, said provided in the cylinder head cover collecting chambers on a connecting line are coupled to each other The gas is then introduced in Teufastbet ⁇ eb downstream of the throttle cap in the intake and at full load in an air supply pipe upstream of the turbocharger
• the object of the invention is to provide a simpler device for Kurbelgehauseent Kunststoffung and a method for this purpose
• the device according to the invention for crankcase ventilation and jerk guidance of the vent gases (called blow-by gases) in the combustion chamber of a supercharged internal combustion engine has several manifolds for exhaust gases associated with the turbine housing and one or more cylinders. These manifolds can be provided in the turbine housing or on the cylinder head side At least one turbocharger is arranged in a suction line, whereby several suction lines can also be provided. In addition, each collecting chamber is assigned at least one separate oil separator.
• a partial gravity discharge line leads from an oil separator to the downstream of the turbocharger to the suction line into which it flows each Entlabscheider a Vollastruckschreibtechnisch provided for Ent Kunststoffungsgas, the upstream of the turbocharger mouths in the intake
• de-aeration gas flows through each collecting chamber on the associated, own Olabsc heider in the intake pipe
• the inventive device provides that in part-load operation less
• each row of cylinders has its own collection chamber.
• these collection chambers can be sections of the crankcase or be associated with the cylinder head and lie in its area
• the collecting chambers must be current-connected with each other. This can preferably take place via the common crankcase, so that additional lines could be omitted
• each row of cylinders (also called a cylinder bank) has its own associated turbocharger
• an oil separator is assigned to each turbocharger
• Full-throttle delivery lines may be provided which travel from the oil separators to the intake manifolds of the plurality of turbochargers. These full-load delivery conduits will then direct the gas to the intake manifolds upstream of the turbochargers at full load
• Ventilation provided, which leads to a collection chamber and on the Connection of the collecting chambers vented
• a ventilation line enables a so-called winding of the Kurbeigehauses with fresh air, which among other things, the chemical aging of the lubricating oil is reduced
• the construction cost of ventilation is very low
• the aeration line in the oil separator which does not work in part-load operation, mouth, so that from this, the ventilation is also hereby let the number of terminals or provided with terminals parts reduce
• the ventilation line can be the full-load transfer line of the non-working oil separator.
• This line has, as it were, a double function and is flowed through in two directions, in one direction from the deaeration gas and in the other direction from the fresh air
• the check valve in serving as a ventilation line Vollastruckschreib can be provided with a throttled bypass, which is then vented, although the check valve is actually in the closed position
• This embodiment can be realized very inexpensive
• a throttle unit with backlash function eg PCV valve
• PCV valves prevent the backflow of the gases
• PCV valves are available in heatable and unhookable execution About the PCV valves sucked by means of the negative pressure in the intake tract, the Ent Kunststoffungsgase, in part-load bed
• the oil separators are gravity separators, in particular cyclone separators, as already mentioned, preferably even non-switchable cyclone separators
• the venting takes place according to the preferred embodiment cylinder head side, wherein the collecting chambers may be provided in the cylinder head or in the valve bonnets.
• the collecting chambers can also be sections of the interior of the crankcase that merge into one another.
• the invention further relates, as already explained, a method for venting a crankcase of an internal combustion engine, in particular a
• Reciprocating engine which has several collecting chambers for venting gases, which are assigned their own oil separator. The procedure provides that in
• a motor more specifically, a reciprocating engine one
• the engine is in this embodiment, a V-type engine with a crankcase 10, which has two rows of cylinders 12, 14. Denoted at 16 are the pistons and at 18 the intake and exhaust valves housed in the cylinder heads 20,22. Each row of cylinders is covered with a so-called. Valve cover 24, 26, wherein the valve bonnets 24, 26 can also merge into one another in one piece.
• Collection chambers 28, 30 are provided for vent gases.
• vent gases are contaminated with water, oil from the crankcase 10 and other components blow-by gases 32, which between the
• Piston 16 and the cylinders 34, 36 can escape from the corresponding working spaces in the crankcase chamber 38.
• these blow-by gases 32 rupture oil 40 at the bottom of the crankcase chamber 38.
• the resulting vent gas 32 is then in the crankcase chamber 38, where it would generate an overpressure.
• vent gases 32 not only spread in the crankcase chamber 38, but may flow through passages 42, 44 in the cylinders 34, 36 or between the cylinders 34, 36 and the valve bonnets 24, 26 to the cylinder heads 20, 22.
• a separate collection chamber 28, 30 is provided for the vent gases for each cylinder row 12, 14 between the cylinder heads 22, 24 and the associated valve bonnets 24, 26.
• the Sammelkammem 28, 30 could of course also be formed in the area of the cylinder heads 20, 22 and the cylinder head cover, as shown for example in DE 35 09 439 C2.
• the collection chambers 28, 30 are interconnected via the crankcase 10 or, more specifically, via the merging passages 42, 44 (e.g., on the facing sides of the cylinders 34, 36).
• junction is designated 46.
• one of the several outflow openings 48 for the venting gas is also provided.
• the arrow 50 symbolizes at this point, the venting gas, which flows into the passages 42, 44.
• the engine block shown is of course integrated in an air supply and an exhaust system, which will be described in more detail below.
• Each cylinder bank 12, 14 is associated with its own intake manifold 52, 54, which is subdivided into several sections, in each of which a separate intake noise damper 56 and a possibly necessary hot-film air mass meter 58 are integrated.
• Each intake pipe 52, 54 is also associated with its own turbocharger 60, 62, which is integrated in an exhaust pipe 64, 66 and is driven by the exhaust gas.
• the turbochargers 60, 62 divide the intake passages 52, 54 into an upstream section 68, 70 and a downstream section 72, 74.
• a device for crankcase ventilation and return of the venting gases in the respective combustion chamber 84, 86 of the cylinder 34 and 36 is provided.
• This device comprises, inter alia, the collection chambers 28, 30 and at least one own oil cutters 88, 90 assigned to each collection chamber 28, 30.
• the oil separators 88, 90 are cyclone separators, with no switchable cyclones.
• bypass with throttle 96 can be bridged.
• bypass with throttle 96 may also be fully integrated into the check valve 94.
• the oil separator 90 of the other collection chamber 30 has a from the
• Oil separator 90 outgoing gas return line, which divides several times, namely on the one hand in a Vollast Wegtechnischtechnisch 98, in the upstream
• Section 70 opens and in which a check valve 99 is seated, and two part throttle return lines 100, 102nd
• the part throttle return line 100 is provided with a so-called. PCV valve 104 and opens into the downstream section 72 of the suction line 52, which is not actually assigned to the oil separator 90.
• the partial flow return line 102 is also provided with a PCV valve 106 and opens into the downstream section 74 of the suction line 54 associated with the oil separator 90.
• the part throttle return lines 100, 102 preferably end after the throttle valves 76, 78 and also preferably after the intercoolers 80, 82nd
• vent gas then flows from the oil separators 88, 90 through the open check valves 94, 99 into the upstream ones
• Sections 72, 74 closed.
• the venting gas of the collection chamber 28 flows through the flow connection (here the passages 42, 44) to the collection chamber 30.
• the flow connection here the passages 42, 44
• vent gas then splits downstream of the oil separator 90 and passes through the open PCV valves 104, 106 into the downstream sections 72, 74 of the exhaust conduits 64, 66, respectively.
• fresh air ventilation also takes place, namely ventilation of both the collection chambers 28, 30 and the crankcase.
• fresh air drawn in symbolized by a broken line parallel to the full return line 92
• the oil separator 88 passes via the full return line 92 into the oil separator 88 and thus into the collecting space 28. From there, the fresh air can supply all the spaces provided with the vent gas Flow through chambers and get to the oil separator 90.
• the inventive method thus provides that in partial load operation the
• Oil separator 90 is guided and vented through this, whereas the exhaust gases of the collecting chambers 28, 30 via their own, each associated oil separator 88, 90 are vented in full load operation.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Applications Claiming Priority (2)

Publications (2)

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Country Status (5)

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• 2008
  • 2008-06-24 DE DE102008029904A patent/DE102008029904A1/de not_active Withdrawn
• 2009
  • 2009-05-27 EP EP09768885A patent/EP2297434B1/fr active Active
  • 2009-05-27 WO PCT/EP2009/003751 patent/WO2009156036A1/fr active Application Filing
  • 2009-05-27 AT AT09768885T patent/ATE532948T1/de active
  • 2009-05-27 ES ES09768885T patent/ES2373778T3/es active Active

Non-Patent Citations (1)

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