EP2054589B1 - Soupape de régulation de pression, dispositif de purge d'air de carter moteur et procédé pour son exploitation - Google Patents

Soupape de régulation de pression, dispositif de purge d'air de carter moteur et procédé pour son exploitation Download PDF

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Publication number
EP2054589B1
EP2054589B1 EP07802232A EP07802232A EP2054589B1 EP 2054589 B1 EP2054589 B1 EP 2054589B1 EP 07802232 A EP07802232 A EP 07802232A EP 07802232 A EP07802232 A EP 07802232A EP 2054589 B1 EP2054589 B1 EP 2054589B1
Authority
EP
European Patent Office
Prior art keywords
valve
crankcase
internal combustion
combustion engine
pressure control
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.)
Expired - Fee Related
Application number
EP07802232A
Other languages
German (de)
English (en)
Other versions
EP2054589A1 (fr
Inventor
Wolfram Enke
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP2054589A1 publication Critical patent/EP2054589A1/fr
Application granted granted Critical
Publication of EP2054589B1 publication Critical patent/EP2054589B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F01M13/0011—Breather 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
    • F01M13/0011—Breather valves
    • F01M2013/0016—Breather valves with a membrane
    • 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

Definitions

  • the invention relates to a crankcase ventilation device, comprising a pressure control valve for a crankcase ventilation of an internal combustion engine with a valve housing, a valve diaphragm and a valve spring.
  • crankcase vents are provided, via which a pressure equalization can take place by gases escape from the crankcase and can be returned to the intake system of the internal combustion engine. It is also known to arrange a pressure control valve in the region between the crankcase and the intake system in order to control the outflow of crankcase gases into the intake system.
  • crankcase ventilation device for example, goes DE-OS 1 526 575 and describes a the control valve upstream check valve, which closes the connection to the crankcase in the event of a misfire of the internal combustion engine due to the increased pressure in the intake system. In this way, a continuation of the pressure wave is prevented in the crankcase.
  • the situation is completely different in the case of gas-powered, in particular hydrogen-powered, internal combustion engines.
  • the fuel in combination with air has a very high ignitability over a wide range, so that in the case of a misfire of the internal combustion engine, a propagation of the flame front through the crankcase ventilation into the crankcase and there the ignition of a larger amount of ignitable mixture is possible.
  • Another aspect related to gas-powered internal combustion engines relates to the possible accumulation of fuel (vapor) in the intake system, especially during the Internal combustion engine is not in operation, with the result of a very high probability of ignition during the subsequent start of the internal combustion engine.
  • Such accumulation of fuel in the intake system may for example be due to an increased amount of blow-by gases or a defect in the fuel supply.
  • the US 3,262,436 relates to means for regulating the pressure in an engine crankcase with a pressure control valve and a check valve for locking the pressure control valve at standstill and when starting the internal combustion engine to improve the starting behavior of the internal combustion engine.
  • a pressure control valve and a check valve for locking the pressure control valve at standstill and when starting the internal combustion engine to improve the starting behavior of the internal combustion engine.
  • an active locking of the pressure control valve is not possible.
  • the object of the invention is to effectively prevent the ignition of a combustible fuel / air mixture in the intake system and / or a flashback on the crankcase ventilation in the crankcase, starting from the cylinder inlet of a particular hydrogen-powered internal combustion engine.
  • the propagation of the flame front should be prevented by the crankcase ventilation in the crankcase.
  • the possibility of accumulation of fuel in the intake system should already be avoided.
  • the vent volume flow of the crankcase ventilation device should not be affected during operation of the internal combustion engine.
  • an active blocking of the pressure regulating valve should be made possible in the case of critical states.
  • crankcase ventilation device with the features of claim 1, by a vacuum pump is provided for evacuation of the separate room.
  • crankcase ventilation device with a pressure control valve for a crankcase ventilation of an internal combustion engine with a valve housing, a valve diaphragm and a valve spring, wherein a separate check valve is provided to block the pressure control valve, to evacuate the separate room to provide a vacuum pump and to switch the vacuum pump to use an energizable electric switching valve, which is not evacuated when energized Elektroumschaltventil the separate room and is evacuated when energized Elektroumschaltventil the separate room.
  • a common negative pressure pump is provided in a crankcase ventilation device with a plurality of pressure control valves for evacuating the separate spaces of the pressure control valves.
  • FIG. 1 shows a crankcase ventilation device 100 with vacuum actuated shut-off valves 102, 104, a vacuum pump 106 and a Elektroumschaltventil 108.
  • the present crankcase ventilation device 100 is suitable for use in an internal combustion engine shown here with two cylinder groups, each having a separate intake system, for example, a V12 Cylinder internal combustion engine.
  • crankcase ventilation gases are fed in two places by the shut-off valve 102nd a first and the check valve 104 is associated with a second intake system.
  • the crankcase ventilation device according to the invention may also include only one shut-off valve, for example when crankcase ventilation gases are to be fed into the intake system at only one location, or comprise more than two shut-off valves.
  • Shut-off valves 102, 104, vacuum pump 106 and electric switching valve 108 are connected to pressure lines 110.
  • a vacuum actuatable shut-off valve 200 for crankcase ventilation is disclosed in US Pat FIG. 2 shown in section.
  • a partially concealed inlet port 202 in the present view serves to connect the shut-off valve 200 with a vent opening in the crankcase of the internal combustion engine.
  • the shut-off valve 200 is attached to a connection surface 218 of the valve housing 204 on an intake system of the internal combustion engine, not shown here, wherein an outlet port 210 protrudes through an inlet opening in the intake system in the intake air leading portion of the intake, so starting from the inlet port 202 on the within the Valve housing 204 formed between the valve housing 204 and a valve diaphragm 206 space and the nozzle 210 crankcase ventilation gases are fed to the intake system.
  • a negative pressure prevails in the intake system, while blow-by gases increase the pressure in the crankcase.
  • the intake system is connected in a gas-conducting manner with the crankcase, a predetermined negative pressure can also be achieved in the crankcase.
  • there is a regulation of the negative pressure in the crankcase by means of the check valve 200 with the valve diaphragm 206, which cooperates with the stop valve side, lying in the valve housing 204 opening of the outlet nozzle 210.
  • valve membrane 206 is acted upon by the force of a housing side supporting valve spring 205 in the opening direction.
  • the valve diaphragm 206 by the force of a locking spring 220 with the interposition of a barrier membrane 212, which is supported on the valve diaphragm 206 on the one hand and on the locking spring 220 on the other hand, acted upon.
  • the force of the locking spring 220 exceeds the force of the valve spring 205 such that when the locking spring force is fully effective, the shut-off valve 200 is locked and also a possible negative pressure in the crankcase and / or overpressure in the intake system remains securely closed.
  • a separate enclosed space 214 is formed within the valve housing 204, which is accessible via an opening with nozzle 216 to the outside and evacuated.
  • the barrier diaphragm is depressed against the force of the valve spring 220, thus reducing the barrier spring force acting on the valve diaphragm 206.
  • the valve membrane 206 moves in Opening direction and releases the vent line between intake and crankcase.
  • crankcase pressure is controlled as usual, by shifting the valve diaphragm 206 against the force of the valve spring 205 towards the valve seat and thus the passage cross-section for a lower pressure in the intake system compared to the pressure in the crankcase crankcase ventilation gases reduced. If the negative pressure in the intake system is too large, the valve diaphragm 206 closes the passage for crankcase ventilation gases for a short time.
  • An evacuation of the space 214 takes place by means of the vacuum pump 106, which is connected by means of pressure lines 110 to the shut-off valves 102, 104 and for the control of which the electrical switching valve 108 is provided.
  • the vacuum pump 106 is turned on when opening the crankcase ventilation is safe in terms of safety, otherwise - in critical phases, especially at start and at standstill of the engine - the vacuum pump 106 is turned off, thus blocking the crankcase ventilation.
  • FIG. 3 shows an intake system 302 of a hydrogen-powered V12 cylinder internal combustion engine 300 with a vacuum-actuable shut-off valve 304 in the installed position.

Landscapes

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

Claims (3)

  1. Installation de ventilation de carter de vilebrequin comprenant :
    - une soupape de régulation de pression (102, 104, 200, 304) pour la ventilation du carter de vilebrequin d'un moteur à combustion (300), ayant un boîtier de soupape (204), une membrane de soupape (206) et un ressort de soupape (205),
    - une soupape d'arrêt particulière (222) bloquant la soupape de régulation de pression (102, 104, 200, 304),
    caractérisée par
    une pompe à dépression (106) pour évacuer la chambre particulière (214) formée entre une membrane d'arrêt (212) de la soupape d'arrêt (222) et le boîtier de soupape (204).
  2. Installation de ventilation de carter de vilebrequin selon la revendication 1,
    caractérisée par
    une électrosoupape de commutation (108) susceptible d'être alimentée pour commuter la pompe à dépression (106), et
    lorsque l'électrosoupape (108) n'est pas alimentée, la chambre particulière (214) n'est pas évacuée, alors que lorsque l'électrosoupape (108) est alimentée, la chambre particulière (214) est évacuée.
  3. Installation de ventilation de carter de vilebrequin selon l'une des revendications 1 et 2, comprenant plusieurs soupape de régulation de pression (102, 104, 200, 304) pour la ventilation du carter de vilebrequin du moteur à combustion (300),
    caractérisée en ce qu'
    une pompe à dépression (106) commune, est prévue pour évacuer les chambres particulières (214) des soupapes de régulation de pression (102, 104, 200, 304).
EP07802232A 2006-10-30 2007-09-08 Soupape de régulation de pression, dispositif de purge d'air de carter moteur et procédé pour son exploitation Expired - Fee Related EP2054589B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006051062A DE102006051062A1 (de) 2006-10-30 2006-10-30 Druckregelventil, Kurbelgehäuseentlüftungseinrichtung und Verfahren zum Betreiben derselben
PCT/EP2007/007853 WO2008052620A1 (fr) 2006-10-30 2007-09-08 Soupape de régulation de pression, dispositif de purge d'air de carter moteur et procédé pour son exploitation

Publications (2)

Publication Number Publication Date
EP2054589A1 EP2054589A1 (fr) 2009-05-06
EP2054589B1 true EP2054589B1 (fr) 2010-04-21

Family

ID=38596217

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07802232A Expired - Fee Related EP2054589B1 (fr) 2006-10-30 2007-09-08 Soupape de régulation de pression, dispositif de purge d'air de carter moteur et procédé pour son exploitation

Country Status (4)

Country Link
US (1) US20090205620A1 (fr)
EP (1) EP2054589B1 (fr)
DE (2) DE102006051062A1 (fr)
WO (1) WO2008052620A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018210443A1 (fr) 2017-05-19 2018-11-22 Deutz Aktiengesellschaft Moteurs à combustion avec formation de mélange externe et réservoirs de compensation pour éviter le retour de flammes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015101886B4 (de) 2015-02-10 2022-07-14 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Regelvorrichtung zur Gleichverteilung von Gasen und/oder Flüssigkeiten auf mindestens zwei Behälter

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3225753A (en) * 1965-12-28 Fire check and cold start control device for crankcase ventilator
US2933075A (en) * 1952-12-24 1960-04-19 Geffroy Robert Rene Louis Apparatus for controlling the flow of air to the intake manifold and the ignition of an automotive engine
US3262436A (en) * 1964-12-08 1966-07-26 Gen Motors Corp Pressure regulating device
DE1526575A1 (de) * 1966-05-27 1970-04-30 Gen Motors Corp Kurbelgehaeuse-Entlueftungsventil fuer Brennkraftmaschinen
US3473521A (en) * 1967-09-13 1969-10-21 George V Mustain Crankcase ventilation valve and fuel economizer
US4723410A (en) * 1985-10-22 1988-02-09 Otters John L Safety improvements in high pressure thermal machines
US5092281A (en) * 1988-07-26 1992-03-03 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Hydrogen engine system
DE4019757A1 (de) * 1990-06-21 1992-01-02 Honeywell Bv Membrangesteuerter gasdruckregler
US5845485A (en) * 1996-07-16 1998-12-08 Lynntech, Inc. Method and apparatus for injecting hydrogen into a catalytic converter
US5733421A (en) * 1996-09-19 1998-03-31 Pettigrew; J. W. Hydrogen-oxygen fuel cell
DE19860154A1 (de) * 1998-12-24 2000-06-29 Daimler Chrysler Ag Einrichtung zur Entlüftung des Kurbelgehäuses eines Verbrennungsmotors
DE102007033411A1 (de) * 2007-07-18 2009-01-22 Audi Ag Fahrzeug, insbesondere Kraftfahrzeug mit Tankentlüftungssystem

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018210443A1 (fr) 2017-05-19 2018-11-22 Deutz Aktiengesellschaft Moteurs à combustion avec formation de mélange externe et réservoirs de compensation pour éviter le retour de flammes
DE102017004858A1 (de) 2017-05-19 2018-11-22 Deutz Aktiengesellschaft Verbrennungsmotoren mit äußerer Gemischbildung und Ausgleichsbehälter zur Vermeidung von Rückzündungen
US11326564B2 (en) 2017-05-19 2022-05-10 Deutz Aktiengesellschaft Internal combustion engines with external mixture formation and compensation vessel for avoiding re-ignition

Also Published As

Publication number Publication date
EP2054589A1 (fr) 2009-05-06
WO2008052620A1 (fr) 2008-05-08
DE102006051062A1 (de) 2008-05-08
US20090205620A1 (en) 2009-08-20
DE502007003537D1 (de) 2010-06-02

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