EP0896133A1 - Ventilation du carter moteur - Google Patents

Ventilation du carter moteur Download PDF

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Publication number
EP0896133A1
EP0896133A1 EP98114397A EP98114397A EP0896133A1 EP 0896133 A1 EP0896133 A1 EP 0896133A1 EP 98114397 A EP98114397 A EP 98114397A EP 98114397 A EP98114397 A EP 98114397A EP 0896133 A1 EP0896133 A1 EP 0896133A1
Authority
EP
European Patent Office
Prior art keywords
throttle valve
ventilation
crankcase
primary
line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98114397A
Other languages
German (de)
English (en)
Other versions
EP0896133B1 (fr
Inventor
Ulrich Dipl.-Ing. Bachmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Adam Opel GmbH
Original Assignee
Adam Opel GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Adam Opel GmbH filed Critical Adam Opel GmbH
Publication of EP0896133A1 publication Critical patent/EP0896133A1/fr
Application granted granted Critical
Publication of EP0896133B1 publication Critical patent/EP0896133B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to a crankcase ventilation according to the preamble of claim 1.
  • crankcase ventilation is with DE 38 24 791 described. Secure such crankcase vents constantly during the operation of the internal combustion engine Vacuum in the crankcase, so that no gases from it can escape into the environment uncontrolled.
  • Vacuum in the crankcase is opened when the internal combustion engine is loaded and Throttle valve the greater part of the crankcase gas through the primary ventilation line into the intake pipe.
  • Throttle valve At idle and thus the throttle valve is closed however, it is only at the secondary venting point at, so that it is only by the cross-section tighter secondary vent line the negative pressure transfers to the crankcase and the crankcase gas only through the secondary vent in the Intake pipe arrives.
  • the amount of this gas is at idle particularly critical because of their idle behavior the internal combustion engine is affected. It is therefore usual, the secondary vent through a nozzle to calibrate.
  • the invention has for its object a crankcase ventilation of the type mentioned above to improve that in all areas of the Internal combustion engine a sufficient negative pressure in the crankcase sets, the vacuum in the intake pipe downstream of the throttle valve remains sufficiently high and the Calibration of the engine control with regard to the idling behavior is not affected.
  • the throttle valve opens the primary vent via the primary ventilation line with the crankcase in connection. That is in the entire intake pipe Any negative pressure can also be found extend the crankcase. That at high load in increased Extent of crankcase gas (blow-by) vacuumed safely.
  • the throttle valve can advantageously by means of a vacuum box of the vacuum in the intake pipe below the Throttle valve must be operated. It can also be beneficial be the vacuum box from the differential pressure between the Press upstream and downstream of the throttle to operate. It is also possible to use a throttle valve electric actuator, e.g. B. an electromagnet or to operate a stepper motor by the electronic Engine control unit an electrical signal for that Degree of throttling is generated.
  • a throttle valve electric actuator e.g. B. an electromagnet or to operate a stepper motor by the electronic Engine control unit an electrical signal for that Degree of throttling is generated.
  • the throttle valve is particularly advantageous designed as a slide valve.
  • the spool of this valve can be provided with a closing curve, which in addition to controlling the operating force of the throttle valve an adaptation of the throttle behavior to the Motor characteristic enables.
  • An internal combustion engine 1 has a crankcase, which via oil return channels and oil separators with two on the Valve hood 2 of the cylinder head 3 vent port emerging 4 communicates.
  • the internal combustion engine 1 also has an intake tract with an intake pipe 5 and an exhaust pipe 6.
  • the arrow 8 is the Direction of flow of air in the intake pipe 5 indicated.
  • Upstream of the throttle valve 7 is in the intake pipe 5 a primary ventilation opening 9, which is connected via a primary ventilation line 10 with one of the ventilation ports 4 is connected to the valve cover 2.
  • the cross section of the primary vent line 10 is larger than that of the secondary vent line 12.
  • the size the secondary vent 11 is calibrated by a Nozzle 13 determined and significantly smaller than that Primary ventilation opening 9.
  • a throttle valve 14 in which a slider 15 slidably against the force of a Spring 16 is arranged.
  • the slide 15 is with a Membrane 17 connected to a pressure cell 18.
  • the membrane 17 separates the pressure cell 18 into two rooms 19 and 20.
  • the space 19 of the pressure cell 18 directed towards the slide 15 is downstream of the intake pipe 5 by means of a line 21 the throttle valve 7 connected.
  • the room 20 is with a Line 22 connected to the intake pipe 5 upstream of the Throttle valve 7.
  • the slide 10 has a closing curve 23 on.
  • the throttle valve 7 is fully or almost completely open. In the intake pipe 5 there is both upstream and downstream an approximately equal negative pressure downstream of the throttle valve 7. This vacuum builds up both through the primary vent line 10 as well as via the secondary vent line 12 to the crankcase of the internal combustion engine 1 continued. The gas generated in the crankcase (blow-by) is through the primary vent line 10 and - in less Dimensions - also through the secondary ventilation line 12 sucked into the intake pipe 5 and the motor Combustion supplied.
  • the throttle behavior of the slide 10 can be coordinated that over the entire operating range of the internal combustion engine 1 an optimal and stable vacuum in Crankcase can be maintained. Likewise, the crankcase is sufficient in all operating conditions vented and it is still more and more sufficient Vacuum available to drive servo devices.
  • the invention is not restricted to the exemplary embodiment.
  • the throttle valve can e.g. also as a rotary valve be trained.
  • As an actuator for actuating the Throttle valve can also be used instead of a pressure cell Electric servomotor can be provided, the control signals is controlled by an electronic engine control are generated in a manner known per se or as a map in a file of the engine control unit are saved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
EP98114397A 1997-08-06 1998-07-31 Ventilation du carter moteur Expired - Lifetime EP0896133B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19734001 1997-08-06
DE19734001A DE19734001A1 (de) 1997-08-06 1997-08-06 Kurbelgehäuse-Entlüftung

Publications (2)

Publication Number Publication Date
EP0896133A1 true EP0896133A1 (fr) 1999-02-10
EP0896133B1 EP0896133B1 (fr) 2002-11-06

Family

ID=7838143

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98114397A Expired - Lifetime EP0896133B1 (fr) 1997-08-06 1998-07-31 Ventilation du carter moteur

Country Status (4)

Country Link
EP (1) EP0896133B1 (fr)
AT (1) ATE227391T1 (fr)
DE (2) DE19734001A1 (fr)
ES (1) ES2186060T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2815084A1 (fr) * 2000-10-06 2002-04-12 Volkswagen Ag Moteur a combustion interne avec purge de carter-cylindres
WO2002073009A1 (fr) * 2001-03-13 2002-09-19 Volvo Lastvagnar Ab Dispositif a soupapes pour commande de pression dans un moteur a combustion et procede de commande de pression
DE20118388U1 (de) * 2001-11-13 2003-03-27 Hengst GmbH & Co.KG, 48147 Münster Einrichtung für die Kurbelgehäuse-Entlüftung einer Brennkraftmaschine
EP1411216A1 (fr) * 2002-10-15 2004-04-21 DaimlerChrysler AG Ventilation de carter moteur
DE10254626B4 (de) * 2002-11-22 2015-11-12 Volkswagen Ag Kurbelgehäuseentlüftungsventil für eine Brennkraftmaschine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10321211B4 (de) * 2003-05-12 2009-01-15 Woco Industrietechnik Gmbh Drosselventil zur Regelung von Druck im Kurbelgehäuse einer Brennkraftmaschine
DE10331344B4 (de) * 2003-07-11 2015-10-22 Daimler Ag Verfahren zum Entlüften eines Kurbelgehäuses einer Brennkraftmaschine
DE102005020442B4 (de) * 2005-04-29 2018-01-25 Mahle International Gmbh Entlüftungseinrichtung für ein Kurbelgehäuse einer Brennkraftmaschine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB544761A (en) * 1941-03-04 1942-04-27 Bendix Aviat Corp Improvements in or relating to crank-case ventilation in internal combustion engines
US3589347A (en) * 1968-07-17 1971-06-29 Nissan Motor Crankcase ventilation system
US4102314A (en) * 1977-03-30 1978-07-25 Chrysler Corporation Crankcase ventilation
US4856487A (en) * 1985-12-24 1989-08-15 Kabushiki Kaisha Tsuchiya Seisakusho Gas flow rate control system for internal combustion engine
DE3824791A1 (de) 1988-07-21 1990-01-25 Porsche Ag Kurbelgehaeuseentlueftung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB544761A (en) * 1941-03-04 1942-04-27 Bendix Aviat Corp Improvements in or relating to crank-case ventilation in internal combustion engines
US3589347A (en) * 1968-07-17 1971-06-29 Nissan Motor Crankcase ventilation system
US4102314A (en) * 1977-03-30 1978-07-25 Chrysler Corporation Crankcase ventilation
US4856487A (en) * 1985-12-24 1989-08-15 Kabushiki Kaisha Tsuchiya Seisakusho Gas flow rate control system for internal combustion engine
DE3824791A1 (de) 1988-07-21 1990-01-25 Porsche Ag Kurbelgehaeuseentlueftung

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2815084A1 (fr) * 2000-10-06 2002-04-12 Volkswagen Ag Moteur a combustion interne avec purge de carter-cylindres
WO2002073009A1 (fr) * 2001-03-13 2002-09-19 Volvo Lastvagnar Ab Dispositif a soupapes pour commande de pression dans un moteur a combustion et procede de commande de pression
US6802303B2 (en) 2001-03-13 2004-10-12 Volvo Lastvagnar Ab Valve device for pressure control in a combustion engine, and a method for such pressure control
DE20118388U1 (de) * 2001-11-13 2003-03-27 Hengst GmbH & Co.KG, 48147 Münster Einrichtung für die Kurbelgehäuse-Entlüftung einer Brennkraftmaschine
EP1411216A1 (fr) * 2002-10-15 2004-04-21 DaimlerChrysler AG Ventilation de carter moteur
DE10254626B4 (de) * 2002-11-22 2015-11-12 Volkswagen Ag Kurbelgehäuseentlüftungsventil für eine Brennkraftmaschine

Also Published As

Publication number Publication date
DE19734001A1 (de) 1999-02-11
DE59806156D1 (de) 2002-12-12
ATE227391T1 (de) 2002-11-15
EP0896133B1 (fr) 2002-11-06
ES2186060T3 (es) 2003-05-01

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