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
• • 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
• • 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
  • F01M2013/026—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure with pumps sucking air or blow-by gases from the crankcase

Definitions

• the invention relates to a device for the venting of a Kurbeigehauses of an internal combustion engine according to the O-berbegriff of claim 1.
• a device of the generic type is known from the practice of engine construction, especially for automobiles.
• the object of such a device is to maintain a necessary technical and legal reasons negative pressure in Kurbeigehause the internal combustion engine by the Kurbeigehause is vented.
• Oil components entrained in the crankcase degassing gas are separated off in an oil mist separator, and the separated oil is preferably returned to the lubricating oil circuit of the internal combustion engine.
• the gas freed from the oil enters the intake pipe of the internal combustion engine and then passes through the combustion taking place in the cylinder.
• the invention is concerned with the problem of improving a device according to the invention in relation to the previously known prior art in such a way that, in particular, a reduced space requirement can be achieved.
• the invention is based on the general idea, in a device for venting a Kurbeigehauses an internal combustion engine with a Olnebelabscheider and a downstream of this pump to generate a negative pressure, the Olnebelabscheider and form the pump as an interconnected assembly.
• a particularly compact design is achieved, which is a great advantage in an increasingly scarce supply of space in an engine compartment.
• eliminates a further line between Olnebelabscheider and pump so that on the one hand reduces the variety of parts and on the other hand assembly costs can be saved.
• the pump is the Olnebelabscheider downstream in a known manner. In principle, it is also conceivable that at Such an assembly can be found a cheaper for maintenance purposes installation location, so that a change of Olnebelabscheiders or a maintenance of the pump is easier and thus less expensive.
• At least part of a stator of the pump is integrated in the oil mist separator.
• the close teeth between the pump and the Olnebelabscheider is clear, which is reflected in a very compact design and connected to a very small space requirement.
• simplified maintenance is possible by this design, since a part of the stator of the pump is preferably formed simultaneously as a baffle for the Olnebelabscheider and, if this baffle is covered with a corresponding web or the like, allows simplified access thereto.
• the oil mist separator comprises an importer which has flow nozzles and a baffle wall opposite this.
• an impactor oil mist separator have long been known for example from EP 1 068 890 Bl and ensure reliable oil separation over a long period of operation.
• the Olnebelabscheider an additional Olnebelvorabscheider or an additional Olnebelachabscheider is upstream or downstream.
• an upstream Olnebelvorabscheider is for example a cyclone in question, which is an additional Cleaning the oil-mist-containing blow-by gases causes.
• Such a cyclone can also be used as Nachabscheider.
• an air bucket of the pump is arranged coaxially to the axis of the Olnebelab- separator and circulates this radially outward.
• Such an arrangement of the air bucket of the pump ensures a particularly compact design, which can reduce the space requirement of the assembly formed by Olnebelabscheider and pump let.
• a part of the oil mist separator can be formed by parts of the stator of the pump, whereby the compactness of the assembly according to the invention can be additionally increased.
• the oil mist separator and the pump have a common housing or are arranged in a common housing.
• This measure also favors the compact design of the module formed from Olnebelabscheider and pump and also eliminates the need for another housing, for example for the pump or the oil mist separator.
• a common housing therefore reduces the variety of parts and helps to reduce the manufacturing costs of the assembly.
• Fig. 2 is a representation as in Fig. 1, but in another embodiment.
• FIG. 1 an inventive device 1 for the venting of a Kurbeigehauses not shown of an internal combustion engine is shown.
• the device 1 is arranged in a Ent Kunststoffungstechnisch which leads from the crankcase to a suction, or suction of the engine, and has essentially a Olnebelabscheider 2 and a downstream downstream pump 3 for generating a negative pressure.
• the pump 3 is connected downstream of the oil mist separator 2, so that only cleaned blow-by gases come into contact with an air impeller 4 of the pump 3.
• the pump 3 is used to generate a negative pressure, which is to ensure that even in zero-load operation of the engine too high a gas pressure in Kurbeigehause is avoided and occurring in the crankcase blow-by gases are reliably sucked.
• the oil mist separator 2 and the pump 3 are formed as an interconnected assembly. This allows a particularly compact design of the device 1 and reduced their space requirements, which is especially in the small space available in today's engine rooms of great advantage.
• the oil mist separator 2 has nozzles 5, in particular flow or acceleration nozzles, which accelerate the gas stream flowing through the device 1 and feed it to a baffle wall 6 opposite the nozzles 5.
• the baffle 6 is occupied for example with a fabric or a non-woven, which further improves the absorption effect.
• the oil collected at the baffle wall flows according to FIGS. 1 and 2 in the direction of gravity onto a bottom 7 of the oil mist separator 2 and from there to an oil drain 8, which is preferably connected to an oil reservoir, not shown, so that the separated oil a lubrication cycle can be performed again.
• the oil mist separator 2 is designed as an impactor, wherein additionally a not shown Olnebelvorabschei- or Olnebelnachabscheider can be provided.
• Such an oil mist pre-separator which is arranged upstream of the impeller or of the oil mist separator 2, can be designed, for example, as a cyclone.
• the pump 3 is designed as an annular channel air compressor, which via its Lufterschaufein 9 cleaned blow-by gas in the direction of an output 10 and thereby generates a negative pressure in Olnebelabscheider 2 or in this upstream Kurbeigehause. Even- understandably other pump types or types of air are conceivable, which can build compact and generate the required negative pressure.
• the designated by the reference numeral 3 pump according to FIGS. 1 and 2 stands for the space of the pump 3, so that in this example, a storage or control of the pump 3 can be accommodated.
• stator 11 of the pump 3 is integrated into the oil mist separator 2, wherein the stator 11 according to FIG. 1 forms the impact walls 6.
• the Olnebelabscheider 2 is designed as a switchable Olnebelabscheider and a negative pressure valve 12, in particular a spring-loaded vacuum valve 12, which causes a defined deflection at a defined negative pressure and further nozzle 5 'releases.
• the vacuum valve 12 is designed as a poppet valve. When the vacuum valve 12 is open, thus blow-by gas flows through both the nozzles 5 and the other nozzles 5 '. Both nozzles 5 and 5 'have in common that they direct the accelerated blowby gas flow to the baffle 6 and thereby cause a mist misting action on the latter.
• the air bucket 9 of the pump 3 is arranged coaxially to the axis 13 of the Olnebelabscheiders 2 and circulates this radially outward.
• the air bucket 9 of the pump 3 according to FIG. 2 in the axial direction offset from the oil mist separator 2, whereby the structural height of the variant of the device 1 shown in FIG. 2 slightly increases.
• Both the oil mist separator 2 and the pump 3 are arranged in a common housing 14 according to FIG. 1, so that a housing can be saved in comparison with a separate embodiment of the two components.
• FIG. 1 the air bucket 9 of the pump 3 in the axial direction offset from the oil mist separator 2, whereby the structural height of the variant of the device 1 shown in FIG. 2 slightly increases.
• the pump 3 and the baffle 6 of the oil mist separator 2 are arranged in a first housing part 14 ', while the nozzles 5 of the oil mist separator 2 are arranged in a second housing part 14 "which can be connected to the first housing part 14' are.
• This offers the advantage that the individual housing parts 14 'and 14''allow a disassembly of the device 1, which is particularly advantageous for maintenance.
• the device 1 is characterized by a low structural height, for example 45 mm and a small width, for example 90 mm.
• blow-by gases flow along the direction 16 to the air bucket 9 and from there to the output 10.
• the oil collected on the baffle 6 runs in the direction of gravity and drips on the floor 7, which at its lowest point the oil drain. 8 having.
• This oil drain 8 is preferably connected to the oil reservoir and leads the separated oil to the oil circuit again.
• the inventive device 1, a particularly compact design can be achieved, which also saves an additional housing either for the oil mist separator 2 or for the pump 3 and beyond additional connecting lines between the Olnebelab- separator 2 and the pump 3 can be fallen down.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
• Separating Particles In Gases By Inertia (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (2)

Family

ID=38442115

Family Applications (1)

Country Status (6)

Cited By (14)

Families Citing this family (57)

Citations (2)

Family Cites Families (29)

• 2006
  • 2006-05-29 DE DE102006024816A patent/DE102006024816A1/de not_active Withdrawn
• 2007
  • 2007-05-08 EP EP07728890A patent/EP2021592B1/de not_active Ceased
  • 2007-05-08 DE DE502007003230T patent/DE502007003230D1/de active Active
  • 2007-05-08 US US12/302,410 patent/US8607767B2/en active Active
  • 2007-05-08 JP JP2009512533A patent/JP4991850B2/ja not_active Expired - Fee Related
  • 2007-05-08 WO PCT/EP2007/054437 patent/WO2007137934A2/de not_active Ceased
  • 2007-05-08 CN CN2007800195258A patent/CN101495720B/zh not_active Expired - Fee Related

Patent Citations (2)

Also Published As

Similar Documents

Legal Events