EP0254816B1 - Ventilation du carter de vilebrequin dans des véhicules - Google Patents

Ventilation du carter de vilebrequin dans des véhicules Download PDF

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Publication number
EP0254816B1
EP0254816B1 EP87105943A EP87105943A EP0254816B1 EP 0254816 B1 EP0254816 B1 EP 0254816B1 EP 87105943 A EP87105943 A EP 87105943A EP 87105943 A EP87105943 A EP 87105943A EP 0254816 B1 EP0254816 B1 EP 0254816B1
Authority
EP
European Patent Office
Prior art keywords
crankcase
ventilation system
ventilation device
duct
connexion
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 - Lifetime
Application number
EP87105943A
Other languages
German (de)
English (en)
Other versions
EP0254816A2 (fr
EP0254816A3 (en
Inventor
Karl Dipl.-Ing. Langlois
Manfred Dipl.-Ing. Batzill
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.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche 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 Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of EP0254816A2 publication Critical patent/EP0254816A2/fr
Publication of EP0254816A3 publication Critical patent/EP0254816A3/de
Application granted granted Critical
Publication of EP0254816B1 publication Critical patent/EP0254816B1/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
    • 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
    • F01M13/025—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure using engine inlet suction with an inlet-conduit via an air-filter
    • 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
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/006—Camshaft or pushrod housings

Definitions

  • the invention relates to a crankcase ventilation in motor vehicles, in which the crankcase gases are returned via a main ventilation system or a safety ventilation system from the cylinder crankcase to an intake system of an internal combustion engine, connecting pieces being arranged on an air guide housing of the intake system, to which lines of the main ventilation system and the safety ventilation system are connected.
  • crankcase ventilation Service Information 1985, Porsche 928 S, USA, pages 30 and 31
  • two spaced-apart connecting pieces are provided on the air duct housing of the intake system, one connecting piece with the line of the main ventilation system and the other connecting piece is connected to the line of the safety ventilation system.
  • This crankcase ventilation has a good function, but the air duct housing with the two connecting pieces is complex to construct.
  • the two connecting pieces on the air duct housing take up a considerable amount of space, so that the space constraints, which are in any case restricted in particular in the area of the intake system of a 4-valve engine, are additionally restricted.
  • the object of the invention is to take such precautions on a crankcase ventilation that the connection between the lines of the two systems and the air duct housing is simplified in construction and also takes up little space.
  • the main advantages achieved with the invention are that the arrangement of only one connector for the lines of both systems creates a simple, space-saving connection between the lines and the air duct housing.
  • the separate channels within the connecting piece for the two systems and the staggered outlet openings ensure that the crankcase ventilation functions properly. If the outlet opening of the main ventilation system is blocked, for example by icing, the safety ventilation system with the outlet opening protruding into the interior of the air duct housing takes over the crankcase ventilation until the overgrown connection of the main ventilation system in the air duct housing has become permeable again after the engine operating temperature or a sufficient engine compartment temperature has been reached .
  • the connector can be produced easily and inexpensively.
  • the snap-in connection between the connecting piece and the socket of the air duct housing ensures quick and easy assembly of the connecting piece.
  • a multi-cylinder internal combustion engine 1 for a motor vehicle comprises a cylinder head 2 and a cylinder crankcase 3.
  • a crankcase ventilation 5 is provided, which is composed of a main ventilation system 6 and a safety ventilation system 7.
  • crankcase gases (blow-by gases) pass from the cylinder crankcase 3 into an oil filler neck 8. Then they pass through a line 9, which is connected via an angled connection 10 to a cylinder head cover 11 and penetrates it.
  • An oil separator (not shown in more detail) is provided within the cylinder head cover 11 between the two middle cylinders. After flowing through this oil separator, the crankcase gases pass via a further angle connection 12 and a line 13 arranged outside the cylinder head cover to a connecting piece 14 which is arranged on an air guide housing 15 of the intake system 4.
  • a throttle is inserted within the angle connection 12.
  • the overpressure in the cylinder crankcase 3 increases due to a lack of pressure compensation and the safety ventilation system 7 is activated.
  • the crankcase gases enter the oil filler neck 8 via an opening (not shown) of the cylinder crankcase 3.
  • a safety valve is inserted into a connection of the oil filler neck 8, which opens at an overpressure of 80 to 100 mbar.
  • the safety valve is open, the crankcase gases flow via a line 17 directly to the air duct housing 15 (FIG. 2).
  • a common connecting piece 14 with connecting pieces 18, 19 for the lines 13, 17 of the two systems 6, 7 (main ventilation system and safety ventilation system) is provided on the air guide housing 15 hen, separate channels 20, 21 are led away from the two connecting pieces 18, 19, which extend to distant outlet openings 22, 23.
  • the two connecting pieces 18, 19 run at an angle to one another.
  • the outlet openings 22, 23 of the two channels 20, 21, viewed in the direction of flow B, run at a distance A from one another and open into the air duct housing 15.
  • the cross section of the channel 21 is seen over its entire longitudinal extent, constant.
  • the channel 20 of the main ventilation system 6 partially surrounds the channel 21 of the safety ventilation system 7, the two channels 20, 21 being arranged eccentrically to one another. Wall sections of the inner channel 21 and the outer channel 20 are brought together at 25.
  • the outer channel 20 has an approximately crescent-shaped cross section (FIG. 4).
  • the connecting piece 18 of the main ventilation system 6 runs at an angle to the adjoining duct 20, the side 26 of the duct 20 opposite the outlet opening 22 being designed to be closed.
  • the outlet opening 22 of the main ventilation system 6 is seen in the direction of flow B, arranged in front of the outlet opening 23 of the safety ventilation system 7, in such a way that the outlet opening 22 of the main ventilation system 6 extends in the region of a connecting piece 27 of the air guide housing 15.
  • the outlet opening 23 of the safety ventilation system 7 runs approximately parallel to an inner boundary wall 28 of the air duct housing 15.
  • the approximately Y-shaped connecting piece 14 is inserted into the molded connection piece 27 of the air duct housing 15 and connects to it via a snap-in connection 29.
  • the latching connection 29 comprises grooved projections 30 on the connecting piece 14, which engage in corresponding recesses 31 in the connecting piece 27.
  • the air guide housing 15 is formed by a nozzle-shaped air guide hood 32, which is arranged between an air mass meter and a throttle valve connector, namely below a throttle valve, not shown.

Landscapes

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

Claims (13)

1. Dispositif de purge de carter-moteur (5) de véhicules automobiles, dans lequel les gaz du carter sont renvoyés, par un système de purge principal (6) ou un système de purge de sécurité (7), du carter-moteur (3) à un système d'aspiration (4) d'un moteur à combustion interne (1), des pièces de liaison (14) auxquelles se raccordent les conduits (13, 17) du système de purge principal (6) et du système de purge de sécurité (7), étant disposées sur une boîte de guidage d'air (15) du système d'aspiration (4), caractérisé en ce qu'on prévoit sur la boîte de guidage d'air (15), une pièce de liaison (14) commune avec tubulures de raccordement (18, 19) pour les conduits (13, 17) des deux systèmes (6, 7) et en ce que des tubulures de raccordement (18, 19) partent des canaux (20, 21) séparés qui s'étendent en direction d'orifices de sortie (22, 23) disposés éloignés, les orifices de sortie (22, 23) des canaux (20, 21) se rapprochant l'un de l'autre, vus dans le sens de l'écoulement (B), à une distance (A) et débouchant dans la boîte de guidage d'air (15).
2. Dispositif de purge de carter-moteur selon la revendication 1, caractérisé en ce que la pièce de liaison 14 a à peu près la forme d'un Y.
3. Dispositif de purge de carter-moteur selon la revendication 1, caractérisé en ce que le canal (21) du système de purge de sécurité (7) s'étend dans le prolongement de la tubulure de raccordement (19) correspondante et présente une forme rectiligne.
4. Dispositif de purge de carter-moteur selon la revendication 1, caractérisé en ce que le canal (20) du système de purge principal (6) entoure, sur une section, le canal (21) du système de purge de sécurité (7).
5. Dispositif de purge de carter-moteur selon la revendication 4, caractérisé en ce que les deux canaux (20, 21) sont disposés excentrés.
6. Dispositif de purge de carter-moteur selon les revendications 4 et 5, caractérisé en ce que des sections de paroi du canal intérieur (21) et du canal extérieur (20) s'appliquent l'une contre l'autre, sur une section.
7. Dispositif de purge de carter-moteur selon la revendication 1, caractérisé en ce que l'orifice de sortie (22) du système de purge principal (6) est placé devant, dans le sens d'écoulement (B), de l'orifice de sortie (23) du système de purge de sécurité (7).
8. Dispositif de purge de carter-moteur selon la revendication 1, caractérisé en ce que le canal (20) du système de purge principal (6) et la tubulure de raccordement (18) associée sont disposés de manière à former un angle.
9. Dispositif de purge de carter-moteur selon la revendication 1, caractérisé en ce que le canal (20) du système de purge principal (6) est fermé, sur le côté (26) opposé à l'orifice de sortie (22).
10. Dispositif de purge de carter-moteur selon la revendication 1, caractérisé en ce que la pièce de liaison 14 est placée dans une tubulure (27) de la boîte de guidage d'air (15) et est assemblée à celle-ci, par une liaison à encliquetage (29).
11. Dispositif de purge de carter-moteur selon la revendication 1, caractérisé en ce que le canal (21) du système de purge de sécurité (7) pénètre, par son extrémité libre contenant l'orifice de sortie (23), sur une certaine section, dans le volume intérieur (24) de la boîte de guidage d'air (15).
12. Dispositif de purge de carter-moteur selon la revendication 1, caractérisé en ce que l'extrémité du canal (20), contenant l'orifice de sortie (22), est placée à l'extérieur d'une paroi de délimitation (28) intérieure, dans la région de la tubulure (27).
13. Dispositif de purge de carter-moteur selon la revendication 1, caractérisé en ce que la boîte de guidage d'air (15) est formée par une tôle de guidage d'air (32), placée entre un appareil de mesure de masse d'air et une tubulure de clapet d'étranglement.
EP87105943A 1986-07-26 1987-04-23 Ventilation du carter de vilebrequin dans des véhicules Expired - Lifetime EP0254816B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3625376 1986-07-26
DE3625376A DE3625376C1 (de) 1986-07-26 1986-07-26 Kurbelgehaeuseentlueftung fuer Kraftfahrzeuge

Publications (3)

Publication Number Publication Date
EP0254816A2 EP0254816A2 (fr) 1988-02-03
EP0254816A3 EP0254816A3 (en) 1989-01-11
EP0254816B1 true EP0254816B1 (fr) 1990-10-03

Family

ID=6306074

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87105943A Expired - Lifetime EP0254816B1 (fr) 1986-07-26 1987-04-23 Ventilation du carter de vilebrequin dans des véhicules

Country Status (4)

Country Link
US (1) US4753214A (fr)
EP (1) EP0254816B1 (fr)
JP (1) JPS6341613A (fr)
DE (2) DE3625376C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004043545A1 (de) * 2004-09-09 2006-03-30 Audi Ag Kurbelgehäuseentlüftungseinrichtung für eine Brennkraftmaschine eines Kraftfahrzeuges

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3821528C1 (fr) * 1988-06-25 1989-09-07 Bayerische Motoren Werke Ag, 8000 Muenchen, De
US5140968A (en) * 1992-02-14 1992-08-25 Navistar International Transportation Corp. Closed loop breather system for engine crankcase
IT232314Y1 (it) * 1994-01-20 1999-12-17 Cornaglia G Off Met Spa Condotto di sfiato per vapori combustibili, in particolare di olio lubrificante, in un motore endotermico.
DE19645665A1 (de) * 1996-11-06 1998-05-07 Mann & Hummel Filter Ventileinheit
DE19717040C1 (de) * 1997-04-23 1998-11-26 Mannesmann Vdo Ag Entlüftungsvorrichtung in einer zu einer Saugrohranordnung einer Brennkraftmaschine hinführenden Entlüftungsleitung
DE10136463B4 (de) * 2001-07-26 2010-04-15 Man Nutzfahrzeuge Ag Kurbelgehäuseentlüftung
JP4059130B2 (ja) * 2003-04-15 2008-03-12 日産自動車株式会社 内燃機関のブローバイガス還流装置
US7431023B2 (en) * 2007-01-23 2008-10-07 Gm Global Technology Operations, Inc. Engine PCV system with venturi nozzle for flow regulation
JP4748152B2 (ja) * 2007-12-27 2011-08-17 トヨタ自動車株式会社 内燃機関の吸気管構造
JP4466754B2 (ja) * 2008-03-18 2010-05-26 トヨタ自動車株式会社 内燃機関の電子制御式ブローバイガス還元装置
DE102010013422A1 (de) * 2010-03-30 2011-10-06 Mahle International Gmbh Kupplungseinrichtung, Kurbelgehäuseentlüftungseinrichtung und Frischluftanlage
JP6225885B2 (ja) * 2014-11-14 2017-11-08 マツダ株式会社 ブローバイガス還流装置
FR3069277A1 (fr) * 2017-07-19 2019-01-25 Psa Automobiles Sa Moteur thermique comprenant un circuit interne de limitation de pression des gaz de carter

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
US2128154A (en) * 1937-01-11 1938-08-23 Raymond H Masters Internal combustion engine
US2311036A (en) * 1940-05-27 1943-02-16 Dick Wills Engine breather and ventilating system
US3059628A (en) * 1960-12-13 1962-10-23 William J Linn Gas and fume disposal system for internal combustion engines
US3077871A (en) * 1962-03-19 1963-02-19 Richfield Oil Corp Crankcase ventilating system for internal combustion engines
US3362386A (en) * 1965-05-17 1968-01-09 Mcmahon Binder & Huron Internal-combustion engine
US3381673A (en) * 1965-11-22 1968-05-07 Drysdale William Robert Crankcase ventilation system
US3372685A (en) * 1966-12-05 1968-03-12 Ardell T. Bestland Excessive crankcase pressure warning system and relief valve
US4011846A (en) * 1975-03-24 1977-03-15 Did-Mor Engineering And Manufacturing Co. Anti-pollution device
DE3627376C2 (de) * 1986-08-12 1995-09-21 Unilever Nv Gebinde aus mehreren Einzelpackungen und Verfahren zu seiner Herstellung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Service Information Technik, 1985, Porsche 928S USA, WKD 491 710, Seiten 30, 31 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004043545A1 (de) * 2004-09-09 2006-03-30 Audi Ag Kurbelgehäuseentlüftungseinrichtung für eine Brennkraftmaschine eines Kraftfahrzeuges

Also Published As

Publication number Publication date
EP0254816A2 (fr) 1988-02-03
US4753214A (en) 1988-06-28
JPS6341613A (ja) 1988-02-22
EP0254816A3 (en) 1989-01-11
DE3625376C1 (de) 1987-10-29
DE3765340D1 (de) 1990-11-08

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