EP0787893B1 - Commande de soupape à ressort de rappel pneumatique pour moteur à combustion interne - Google Patents

Commande de soupape à ressort de rappel pneumatique pour moteur à combustion interne Download PDF

Info

Publication number
EP0787893B1
EP0787893B1 EP96119256A EP96119256A EP0787893B1 EP 0787893 B1 EP0787893 B1 EP 0787893B1 EP 96119256 A EP96119256 A EP 96119256A EP 96119256 A EP96119256 A EP 96119256A EP 0787893 B1 EP0787893 B1 EP 0787893B1
Authority
EP
European Patent Office
Prior art keywords
closing
cylinder
spring
piston
engine
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
EP96119256A
Other languages
German (de)
English (en)
Other versions
EP0787893A1 (fr
Inventor
Ulrich Schulz
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 EP0787893A1 publication Critical patent/EP0787893A1/fr
Application granted granted Critical
Publication of EP0787893B1 publication Critical patent/EP0787893B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
    • F01L1/462—Valve return spring arrangements
    • F01L1/465—Pneumatic arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/12—Arrangements for cooling other engine or machine parts
    • F01P3/14—Arrangements for cooling other engine or machine parts for cooling intake or exhaust valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P2003/006—Liquid cooling the liquid being oil

Definitions

  • the invention is based on the preamble of claim 1 of DE-A 42 14 839.
  • valve train is designed as a piston / cylinder unit pneumatic closing spring via its cylinder into a recess in the cylinder head the internal combustion engine pressed in to achieve a good derivation of the heat generated when compressing the enclosed gas volume.
  • the cylinder of the closing spring unit with a considerable wall thickness designed to form cooling channels for the passage of lubricating oil draining from the valve train.
  • the invention is based, for a pneumatic closing spring the task of a generic valve train to show a cooling arrangement, at least a heat dissipation effected depending on the machine speed enables.
  • the advantage of the invention is a constant and in particular by the forced cooling Closing spring flushed by the coolant of the machine depending on the speed, the one optionally set in connection with the heat of compression Spring characteristic curve by means of an appropriate coolant supply to the Closing spring is determined.
  • An advantageous embodiment of the invention describes claim 2, according to which Piston / cylinder unit of the closing spring in a forced-circulation cooled cylinder head is arranged. This can be separate from the internal combustion engine or be chilled with it. Furthermore, claim 2 includes that of the arrangement the closing spring serving recess over the stroke range of the spring piston extends circumferential groove for a formed with the cylinder coolant-carrying chamber, which is advantageously simple to form.
  • a further development of the invention described in claim 3 is directed to that the cylinder designed as an insert (according to EP application No. 95111924.7) Piston / cylinder unit of the closing spring over the outer circumference with in the above Arranged circumferential groove adjacent machine-side areas Sealing devices interacts.
  • the piston / cylinder unit proposed according to EP application 95111924.7 the pneumatic closing spring is sealed against the environment
  • To be designed as a functional unit during assembly Use its spring function is not due to deformation by essentially a press fit especially geared towards sealing against the coolant are at risk, according to claim 3 with the outer circumference of the insert cylinder cooperating sealing devices proposed on the machine side, whereby an essentially smaller press fit is advantageously possible.
  • claim 4 describes a multi-valve internal combustion engine that Separately arranged cooling chambers outside of their cooling jacket in the cylinder head the closing springs connected by a common channel, the when using the coolant of the internal combustion engine to cool the Closing springs are connected to the cooling jacket.
  • the cooling jacket of the cylinder head can be separated from the closing spring cooling chambers can be optimized, with the design of the channel, for example with constant or variable cross-section over its length the invention Speed-dependent cooling of the closing spring or closing springs can be achieved is.
  • claim 5 describes for separately arranged cooling chambers for the closing springs, the use of a lubricant of the internal combustion engine as Coolant, the cooling chambers of the closing springs in the Lubrication system of the internal combustion engine are arranged.
  • the invention is based on an embodiment shown in the drawing described.
  • a valve train 1 of an internal combustion engine 2, not shown, comprises in one liquid-cooled cylinder head 3 a control shaft 4 for actuating a valve 5 of a gas exchange channel 6.
  • the valve 5 is a pneumatic closing spring 7 assigned, which is designed as a piston / cylinder unit 8 in a machine side Recess 9 is arranged.
  • the cylinder 10 of the unit 8 of the closing spring 7 is in the direction of the control shaft 4 for slidably receiving one with a control cam 11 of the control shaft 4 interacting bucket tappet 12 extends directly onto a shaft 13 of the gas exchange valve 5 acts.
  • Next is in the cylinder 10 with the valve stem 13 drive-connected piston 14 arranged as a movable Completion of a compression chamber 15 of the pneumatic closing spring 7 is used.
  • the compression chamber 15 is connected to a gas-carrying supply line 16 in connection.
  • the closing spring unit formed from cylinder 10 and piston 14 is preferably 8 as one against the subject of EP application 95111924.7 Environmentally sealed single-chamber functional unit designed around this advantageously far from the place of use before installation in the internal combustion engine 2 or in the cylinder head 3 for tightness and function.
  • the closing spring 7 can either face one according to FR-A 2 529 616 the supply line 16 by means of a check valve, not shown lockable compression chamber 15 or according to DE-A 29 49 413 in connection with GB-PS 392 294 one with the supply line 16 via a small throttle bore, not shown, constantly communicating compression chamber 15.
  • the cylinder 10 of the Closing spring 7 via an outer peripheral portion 17 at least in the stroke range of the spring piston 14 with a coolant-carrying chamber 18 of a liquid-cooled Internal combustion engine 2, preferably by a not shown Pump forced cooling is connected.
  • the piston / cylinder unit 8 of the closing spring 7 is preferably in one arranged circulation-cooled cylinder head 3, the arrangement of the Closing spring 7 serving recess 9 over the stroke range of the spring piston 14 extending circumferential groove 19 which with the cylinder 10 a forms coolant-carrying chamber 18.
  • a multi-valve internal combustion engine 2 are outside of their cooling jacket 22 in the cylinder head 3 separately arranged cooling chambers 18 of the closing springs 7 connected by means of a common channel 23, which when using the Coolant of the internal combustion engine 2 for cooling the closing springs 7 with the machine-side cooling jacket 22 is connected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Claims (5)

  1. Commande de soupape de moteur à combustion interne à ressort obturateur pneumatique pour une soupape d'échange de gaz, dans laquelle le ressort obturateur (7) en forme d'unité piston/cylindre (8) logée dans une cavité (9) latérale du moteur, est refroidi par du liquide, par l'intermédiaire du cylindre (10) recevant le piston-ressort (14),
    caractérisée en ce que
    le cylindre (10) du ressort obturateur (7) est sollicité au niveau d'un segment de périphérie extérieure (17), au moins dans la plage de déplacement du piston-ressort obturateur (14), par un agent de refroidissement à circulation forcée dans une chemise de refroidissement (22) d'un moteur à combustion interne à refroidissement par liquide (2, culasse 3).
  2. Commande de soupape selon la revendication 1,
    caractérisée en ce que
    l'unité piston/cylindre (8) du ressort obturateur (7) est placée dans une culasse (3) refroidie par circulation forcée,
    la cavité (9) recevant le ressort obturateur (7) ayant une rainure périphérique (19) s'étendant dans la zone de déplacement du piston-ressort obturateur (14), pour former avec le cylindre (10) une chambre (18) à liquide de refroidissement.
  3. Commande de soupape selon la revendication 1 ou 2,
    caractérisée en ce que
    le cylindre (10) de l'unité piston/cylindre (8) en forme d'insert du ressort obturateur (7) coopère par la périphérie extérieure avec des joints d'étanchéité (21, joints toriques) prévus dans des zones (20) latérales du moteur, voisines de la rainure périphérique (19) ou de la chambre (18).
  4. Commande de soupape selon l'une quelconque des revendications 1 à 3,
    caractérisée en ce que
    la culasse (3) à l'extérieur de la chemise (22), comporte des chambres de refroidissement (18) pour plusieurs ressorts obturateurs (7) reliées par un canal commun (23), et
    celui-ci, lorsqu'on utilise le liquide de refroidissement du moteur à combustion interne (2) pour refroidir les ressorts obturateurs (7) communique avec la chemise de refroidissement (22) du moteur à combustion interne (2).
  5. Commande de soupape selon la revendication 4,
    caractérisée en ce qu'
    un agent de graissage du moteur à combustion interne (2) sert d'agent de refroidissement des ressorts obturateurs (7),
    le cas échéant, la ou les chambres de refroidissement (18) du ou des ressorts obturateurs (7) fait ou font partie du système de graissage du moteur à combustion interne (2).
EP96119256A 1996-02-01 1996-12-02 Commande de soupape à ressort de rappel pneumatique pour moteur à combustion interne Expired - Lifetime EP0787893B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19603536 1996-02-01
DE19603536A DE19603536C2 (de) 1996-02-01 1996-02-01 Ventiltrieb für eine Brennkraftmaschine mit einer pneumatischen Schließfeder für ein Gaswechselventil

Publications (2)

Publication Number Publication Date
EP0787893A1 EP0787893A1 (fr) 1997-08-06
EP0787893B1 true EP0787893B1 (fr) 2001-04-04

Family

ID=7784206

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96119256A Expired - Lifetime EP0787893B1 (fr) 1996-02-01 1996-12-02 Commande de soupape à ressort de rappel pneumatique pour moteur à combustion interne

Country Status (2)

Country Link
EP (1) EP0787893B1 (fr)
DE (2) DE19603536C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022111123A1 (de) 2022-05-05 2023-11-09 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Gaswechselventilanordnung für Brennkraftmaschinen sowie Ventiltriebanordnung

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19632628A1 (de) 1996-08-13 1998-02-19 Bayerische Motoren Werke Ag Pneumatische Feder, insbesondere Schließfeder für ein Gaswechselventil einer Brennkraftmaschine
DE10016878A1 (de) * 2000-04-05 2001-10-18 Bayerische Motoren Werke Ag Schliessfeder-Vorrichtung für den Ventiltrieb eines Gaswechselventils einer Brennkraftmaschine
JP6390368B2 (ja) * 2014-11-13 2018-09-19 トヨタ自動車株式会社 シリンダヘッド
JP6303991B2 (ja) * 2014-11-13 2018-04-04 トヨタ自動車株式会社 シリンダヘッド
KR20180085935A (ko) * 2017-01-20 2018-07-30 두산인프라코어 주식회사 엔진의 롤러 태핏용 어댑터 및 이를 포함하는 엔진의 롤러 태핏 조립체

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB392294A (en) 1932-02-09 1933-05-18 Albert Eustace Short Improvements in or relating to valve mechanism for internal combustion engines
CH614014A5 (fr) * 1977-01-28 1979-10-31 Sulzer Ag
DE2949413A1 (de) * 1979-12-08 1981-06-11 Volkswagenwerk Ag, 3180 Wolfsburg Vorrichtung zur veraenderung der rueckstellkraefte bei gaswechsel-steuerventilen von verbrennungsmotoren
FR2529616B1 (fr) 1982-06-30 1987-03-27 Renault Sport Systeme de rappel pneumatique de soupape pour moteur a combustion interne
SE455111B (sv) * 1986-10-20 1988-06-20 Volvo Ab Ventilfjederanordning med paverkningsorgan for fjeder
DE4214839A1 (de) * 1992-05-05 1993-11-11 Audi Ag Ventiltrieb für eine Brennkraftmaschine
JP3484498B2 (ja) * 1993-09-30 2004-01-06 ヤマハ発動機株式会社 ４サイクルエンジン

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022111123A1 (de) 2022-05-05 2023-11-09 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Gaswechselventilanordnung für Brennkraftmaschinen sowie Ventiltriebanordnung

Also Published As

Publication number Publication date
DE59606719D1 (de) 2001-05-10
EP0787893A1 (fr) 1997-08-06
DE19603536A1 (de) 1997-08-07
DE19603536C2 (de) 1999-01-14

Similar Documents

Publication Publication Date Title
DE60200462T2 (de) Brennkraftmaschine mit hydraulischer Vorrichtung zur variablen Betätigung der Ventile und Mittel zum Ausgleichen von Volumenänderungen der hydraulischen Flüssigkeit
DE102005009054B4 (de) Kühlanordnung für einen Zylinderblock
CH628399A5 (de) Anordnung zur kuehlung des zylinderdeckels eines viertakt-dieselmotors.
EP2370714B1 (fr) Unité de commande électromagnétique
EP0787893B1 (fr) Commande de soupape à ressort de rappel pneumatique pour moteur à combustion interne
DE102016120967A1 (de) Längenverstellbare Pleuelstange mit einer Zylinder-Kolben-Einheit mit mehreren Kolbendichtungen
DE4214839A1 (de) Ventiltrieb für eine Brennkraftmaschine
EP0356641B1 (fr) Dispositif de refroidissement pour des sièges de soupapes situés dans une culasse de moteur à combustion interne
DE19535920C2 (de) Drehschiebersteuerung für eine Verbrennungskraftmaschine oder eine Kolbenpumpe
EP0806562B1 (fr) Culasse pour moteur à combustion interne
DE19739165C2 (de) Brennkraftmaschine mit direkt gekühlter Zylinderbüchse
DE102017212547A1 (de) Hubkolben-Brennkraftmaschine
DE102004040781A1 (de) Öldrucksteuersystem und -verfahren für Motoren mit hydraulischer Zylinderabschaltung
DE19514918C2 (de) Kolben für Brennkraftmaschine
DE60221471T2 (de) Kolbenzusammenbau für eine Freikolbenbrennkraftmaschine
DE4336920A1 (de) Ventiltrieb mit niedriger Reibung
DE102010009392A1 (de) Vorrichtung zur variablen Einstellung der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine
DE102016100411A1 (de) Hubkolbenvorrichtung sowie Brennkraftmaschine mit einer solchen Hubkolbenvorrichtung
DE102019101469A1 (de) Hubkolben-Brennkraftmaschine mit einer Kolbenkühlung
EP3311045B1 (fr) Segment de piston doté d'un élément d'étanchéité de gorge
DE4326366A1 (de) Kompressor der Taumelscheibenbauart
DE102018206901A1 (de) Zylinderkopfhaube mit Öffnung zur Durchführung und Lagerung einer Nockenwelle einer Brennkraftmaschine sowie Anordnung einer Nockenwelle an einer solchen Zylinderkopfhaube
DE2629464A1 (de) Motordurchlass
DE4221921B4 (de) Kraftstoffeinspritzpumpe für Brennkraftmaschinen
DE102019216820B4 (de) Flüssigkeitsgekühlte Brennkraftmaschine mit mindestens einem Zylinderrohr

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19980121

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

17Q First examination report despatched

Effective date: 20000523

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20010404

REF Corresponds to:

Ref document number: 59606719

Country of ref document: DE

Date of ref document: 20010510

ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN P. & C. S.N.C.

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20141216

Year of fee payment: 19

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20151217

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20151228

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20151229

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59606719

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160701

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20161201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20161201