EP0154939A2 - Piston en deux parties, refroidi à l'huile - Google Patents

Piston en deux parties, refroidi à l'huile Download PDF

Info

Publication number
EP0154939A2
EP0154939A2 EP85102582A EP85102582A EP0154939A2 EP 0154939 A2 EP0154939 A2 EP 0154939A2 EP 85102582 A EP85102582 A EP 85102582A EP 85102582 A EP85102582 A EP 85102582A EP 0154939 A2 EP0154939 A2 EP 0154939A2
Authority
EP
European Patent Office
Prior art keywords
oil
internal combustion
combustion engine
cooling
cylinder
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
EP85102582A
Other languages
German (de)
English (en)
Other versions
EP0154939A3 (en
EP0154939B1 (fr
Inventor
Ludwig Elsbett
Günter Elsbett
Klaus Elsbett
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0154939A2 publication Critical patent/EP0154939A2/fr
Publication of EP0154939A3 publication Critical patent/EP0154939A3/de
Application granted granted Critical
Publication of EP0154939B1 publication Critical patent/EP0154939B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • F01M1/00—Pressure lubrication
    • F01M1/08—Lubricating systems characterised by the provision therein of lubricant jetting means
    • 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
    • F01P3/02—Arrangements for cooling cylinders or cylinder heads
    • 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
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/11—Thermal or acoustic insulation
    • 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
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/11—Thermal or acoustic insulation
    • F02B77/13—Acoustic insulation
    • 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
    • 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
    • F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/002—Cooling
    • F01M2005/004—Oil-cooled engines
    • 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
    • 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
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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
    • F02F2200/00—Manufacturing
    • F02F2200/06—Casting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
    • F05C2201/0448—Steel

Definitions

  • the invention relates to an oil-cooled piston internal combustion engine with free-standing cylinders and low emission values of heat, noise and pollutants.
  • the equation cooling equals heating must be correct for all internal combustion engines. What is required of a future engine is that the heat emission is kept as low as possible. Heat losses that are unavoidable should also with a high temperature level of a useful use, such as. B. a cabin heater, are supplied. Since cooling water boils at a relatively low temperature and cooling air becomes unusable for many purposes due to its contamination on the engine, there is reason to use the engine oil as a coolant. For this reason, there have always been attempts to provide engine parts such as pistons, cylinders and cylinder heads with oil chambers, to collect the waste heat in the oil (e.g. DE 26 49562). For reasons related to the thermal properties of the oil, the equation of heating and cooling only worked out with little heating, i.e. low engine power.
  • the external cooling of the cylinder is improved by the fact that the cylinders are included free-standing in the oil-sprayed area of the engine. This is achieved by arranging the cylinders in the V position and covering them with a common cover for both rows of cylinders. This cover replaces the usual cylinder head cover, so that all oil that is used for valve control and head cooling also benefits the external cylinder cooling.
  • the annular space for external oil cooling arranged at the upper end of the cylinder is also all around headed the cylinder.
  • the larger cylinder spacing required for this is created in that the crank mechanism has a separate crank for each cylinder and not, as is usual with V-engines, two cylinders are operated by a crank pin.
  • the present application makes use of the pistons and combustion processes shown in the document DE 3314543.
  • the cylinders and the half cylinder head are kept away from the heat radiation to the outside in that the engine walls and the engine cover are designed with a double wall and with an insulating layer in between.
  • Fig. 1 The inner and outer oil purging of the cylinder is shown in Fig. 1, part (1) representing the motor housing with the oil channel (2). On the oil channel (2), which is fed with lubricating oil, one or more oil splashes (3) are arranged, which spray the interior of the cylinder (4) in the plane of motion of the connecting rod.
  • the spray oil (5) is controlled by guide vanes (6) in the direction of the upper piston part (7) and from there is conveyed back to the lower piston part (8). Cooling oil flows through a second bore (9) into the annular space (10), which continues into the cylinder head (11).
  • the cooling oil flows from the annular space (10) through a bore (12, 13) into the valve control space (14), from where it is deflected into the common oil space (15) and cools the cylinders (4) from the outside with spray oil.
  • a common cover (16) which closes the two valve control spaces (14), is stretched over this common oil space (15) of both cylinder rows. Only the part of the cylinder head (11) outside the valve control chamber (14) is not wetted with oil. Through this part of the cylinder head (11) lead the channels for inlet (17) and exhaust (18). The return of the outer cooling oil leads between the free-standing cylinders (4) and is limited by the sound and heat-insulated outer wall (19).
  • the cylinders (4) are arranged completely free-standing, so that the ring channel (10) runs around the entire cylinder. Oil cooling around the entire circumference of the cylinder is also achieved on the inside of the cylinder.
  • the lower piston part (8) has on its inside the guide vanes (6), which run in the direction of the piston pin (20), and on its outside guide surfaces (31) (Fig. 2), which are transverse to the piston pin (20) .
  • the cooling oil reaches the entire cylinder and about 80% of the cylinder length of the inner cylinder surface.
  • the inner cooling oil does not reach the cylinder surface covered by the piston sealing jacket (22), which is why the sealing jacket is cooled on its inner surface with spray oil (5).
  • the ring channel (10) is pierced approximately as deep as the length of the sealing jacket, so that good oil cooling is guaranteed on both sides of this important upper cylinder part.
  • the noise-emitting parts such as camshaft (23), valve train (24), injection pump (25) and nozzle (26), are also housed in the common sound and heat-sealed oil chamber (15).
  • the higher operating temperature for the injection elements is intended because it is required for the vegetable oil fuel.
  • a combustion process is provided in the piston combustion chamber (27), in which the excess air (29) rotates around the hot combustion zone (28), which provides good protection against high temperatures in the upper piston part (7).
  • Fig. 2 shows a section of the lower piston part (8) in the direction of the piston pin with the outer guide surfaces (31), which collect the spray oil (5) (Fig. 1) reclaimed from the upper piston part (7) and divert into the hole for the piston pin (32).
  • the oil is held here briefly by the lower oil sealing edge (33) in order to achieve more intensive cooling of the cylinder wall in this plane. It then flows through the bores (34) into the lower part of the cylinder (4).
  • the arrows (35) show the oil sprayed up on the guide surfaces (6), which is deflected back by the upper part of the piston.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP85102582A 1984-03-13 1985-03-07 Piston en deux parties, refroidi à l'huile Expired - Lifetime EP0154939B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3409101 1984-03-13
DE3409101 1984-03-13

Publications (3)

Publication Number Publication Date
EP0154939A2 true EP0154939A2 (fr) 1985-09-18
EP0154939A3 EP0154939A3 (en) 1987-11-04
EP0154939B1 EP0154939B1 (fr) 1990-12-27

Family

ID=6230313

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85102582A Expired - Lifetime EP0154939B1 (fr) 1984-03-13 1985-03-07 Piston en deux parties, refroidi à l'huile

Country Status (4)

Country Link
US (1) US4715335A (fr)
EP (1) EP0154939B1 (fr)
JP (1) JPS618418A (fr)
DE (1) DE3581093D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1956202A1 (fr) * 2005-11-29 2008-08-13 Hino Motors, Ltd. Structure de lubrification de moteur

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4895111A (en) * 1984-03-13 1990-01-23 Elsbett L Engine cooling system
DE4206165C2 (de) * 1991-03-13 2000-03-30 Volkswagen Ag Kurbelgehäuse für eine Hubkolben-Brennkraftmaschine
GB2286014A (en) * 1994-01-28 1995-08-02 Perkins Ltd Engine rocker arm lubrication
US5595145A (en) * 1995-05-31 1997-01-21 Kabushiki Kaisha Komatsu Seisakusho Cooling structure of diesel engine piston
US5533472A (en) * 1995-07-31 1996-07-09 Chrysler Corporation Oil jet nozzle for an internal combustion with reciprocating pistons
US6257188B1 (en) * 1998-09-02 2001-07-10 Honda Giken Kogyo Kabushiki Kaisha Structure for mounting cylinder head cover of internal combustion engine
US6250275B1 (en) 1999-08-16 2001-06-26 Caterpillar Inc. Internal combustion engine piston pin lubrication
EP1268991B1 (fr) * 2000-03-28 2006-07-05 Federal-Mogul Corporation Piston a grande puissance pourvu d'un deflecteur d'huile
FR2844003B1 (fr) * 2002-09-02 2006-06-16 Bontaz Centre Sa Gicleur a projections multiples pour refroidissement de moteur, et moteurs equipes de tels gicleurs
US6866011B1 (en) 2003-10-09 2005-03-15 General Motors Corporation Block-mounted piston squirter
AP2009004853A0 (en) * 2006-10-05 2009-06-30 Hinderks M V Improved reciprocating devices
US20120031367A1 (en) * 2010-08-05 2012-02-09 Hyundai Motor Company Cylinder bore wall oil squirter, reciprocating engine embodying same and where the engine further embodies a rollerized cranktrain
JP2013130129A (ja) * 2011-12-21 2013-07-04 Kawasaki Heavy Ind Ltd エンジンのピストンの冷却構造
DE102012200279A1 (de) * 2012-01-11 2013-07-11 Ford Global Technologies, Llc Verfahren und Vorrichtung zum Betreiben eines Schmiersystems einesVerbrennungsmotors
US20150059678A1 (en) * 2013-09-03 2015-03-05 Delphi Technologies, Inc. Cylinder head assembly with oil reflector for lubrication of a rocker arm
US11248515B2 (en) * 2019-08-02 2022-02-15 Transportation Ip Holdings, Llc Piston cooling jet system

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH438837A (de) * 1964-05-13 1967-06-30 Hedemora Verkstaeder Ab Einrichtung zur Zuführung von Schmieröl zum Kolbenmantel in Kolbenmotoren, insbesondere beim Anlassen des Motors
DE1601435A1 (de) * 1968-02-14 1970-10-29 Daimler Benz Ag Vorrichtung zur Regelung der Kolbenkuehlung von Brennkraftmaschinen
DE2539470A1 (de) * 1975-09-05 1977-03-10 Daimler Benz Ag Brennkraftmaschinenkolben
DE2649562A1 (de) * 1975-11-03 1977-05-12 Mario Brighigna Verbrennungsmotor mit einem einzigen kreislauf fuer kuehlung und schmierung durch dieselbe fluessigkeit
US4106455A (en) * 1977-01-06 1978-08-15 Vance Jr Robert Vaporizer system for gasoline engines
DE2825870A1 (de) * 1977-06-13 1978-12-21 Stabilimenti Meccanici Vm Spa Verbrennungsmotor
DE2819609A1 (de) * 1978-05-05 1979-11-08 Kloeckner Humboldt Deutz Ag Hubkolbenbrennkraftmaschine
JPS582421A (ja) * 1981-06-29 1983-01-08 Hino Motors Ltd ピストン冷却制御装置
DE3314543A1 (de) * 1983-04-21 1984-10-25 Ludwig Ing.(grad.) 8543 Hilpoltstein Elsbett Gemeinsame innen- und aussenkuehlung einer brennkraftmaschine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1420684A (en) * 1921-07-12 1922-06-27 Bradshaw Granville Cooling internal-combustion engines
US2085810A (en) * 1932-06-20 1937-07-06 Spontan Ab Cooling of internal combustion engines
DE2140824C2 (de) * 1971-08-14 1983-06-01 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Ölgekühlter Kolben für Brennkraftmaschinen
US3731660A (en) * 1971-12-29 1973-05-08 Gen Motors Corp Vapor-cooled internal combustion engine
JPS5823492B2 (ja) * 1977-11-17 1983-05-16 日産自動車株式会社 自動車用低騒音エンジン
SU1134746A2 (ru) * 1982-08-06 1985-01-15 Научно-исследовательский конструкторско-технологический институт тракторных и комбайновых двигателей Устройство дл воздушного и жидкостного охлаждени двигател
FR2541377B1 (fr) * 1983-02-22 1987-06-05 Scoma Energie Procede et dispositif d'echange thermique, en particulier pour le rechauffage du carburant dans les moteurs a combustion interne, notamment diesel
US4508065A (en) * 1983-03-21 1985-04-02 General Motors Corporation Piston cooling oil delivery tube assembly

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH438837A (de) * 1964-05-13 1967-06-30 Hedemora Verkstaeder Ab Einrichtung zur Zuführung von Schmieröl zum Kolbenmantel in Kolbenmotoren, insbesondere beim Anlassen des Motors
DE1601435A1 (de) * 1968-02-14 1970-10-29 Daimler Benz Ag Vorrichtung zur Regelung der Kolbenkuehlung von Brennkraftmaschinen
DE2539470A1 (de) * 1975-09-05 1977-03-10 Daimler Benz Ag Brennkraftmaschinenkolben
DE2649562A1 (de) * 1975-11-03 1977-05-12 Mario Brighigna Verbrennungsmotor mit einem einzigen kreislauf fuer kuehlung und schmierung durch dieselbe fluessigkeit
US4106455A (en) * 1977-01-06 1978-08-15 Vance Jr Robert Vaporizer system for gasoline engines
DE2825870A1 (de) * 1977-06-13 1978-12-21 Stabilimenti Meccanici Vm Spa Verbrennungsmotor
FR2394675A1 (fr) * 1977-06-13 1979-01-12 Stabilimenti Meccanici Vm Spa Moteur a combustion interne refroidi par l'huile de lubrification
DE2819609A1 (de) * 1978-05-05 1979-11-08 Kloeckner Humboldt Deutz Ag Hubkolbenbrennkraftmaschine
JPS582421A (ja) * 1981-06-29 1983-01-08 Hino Motors Ltd ピストン冷却制御装置
DE3314543A1 (de) * 1983-04-21 1984-10-25 Ludwig Ing.(grad.) 8543 Hilpoltstein Elsbett Gemeinsame innen- und aussenkuehlung einer brennkraftmaschine

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
AUTOMOTIVE ENGINEERING, Band 87, Nr. 6, Juni 1979, Seiten 43-50, New York, US; "A new V-6" *
PATENT ABSTRACTS OF JAPAN, Band 7, Nr. 74 (M-203)[1219], 26. März 1983; & JP-A-58 002 421 (HINO JIDOSHA KOGYO) 08.01.1983 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1956202A1 (fr) * 2005-11-29 2008-08-13 Hino Motors, Ltd. Structure de lubrification de moteur
EP1956202A4 (fr) * 2005-11-29 2009-01-14 Hino Motors Ltd Structure de lubrification de moteur
US7827942B2 (en) 2005-11-29 2010-11-09 Hino Motors, Ltd. Lubrication structure for engine

Also Published As

Publication number Publication date
EP0154939A3 (en) 1987-11-04
JPH0262685B2 (fr) 1990-12-26
DE3581093D1 (de) 1991-02-07
JPS618418A (ja) 1986-01-16
US4715335A (en) 1987-12-29
EP0154939B1 (fr) 1990-12-27

Similar Documents

Publication Publication Date Title
EP0154939A2 (fr) Piston en deux parties, refroidi à l'huile
DE2501605C2 (de) Gehäuse für eine Brennkraftmaschine
EP1126152B1 (fr) Culasse pour un moteur à combustion interne
DE3241723A1 (de) Drehschieberanordnung zur steuerung des ladungswechsels einer brennkraftmaschine
DE2847057A1 (de) Verbrennungskraftmaschine mit kuehlsystem
DE2638025A1 (de) Wassergekuehlte brennkraftmaschine, insbesondere dieselmotor
EP0387277A1 (fr) Culasse refroidie a l'huile.
DE3508405A1 (de) Brennkraftmaschine mit reduzierter schall- und waermeemission
DE3326317A1 (de) Zylinderblock
DE19651175C2 (de) Gegenkolben-Zweitakt-Verbrennungsmotor mit Direkteinspritzung des Kraftstoffes in den Zylinder und regelbarer Rotation und Turbulenz der Ladeluft
DE2904167A1 (de) Im druckgiessverfahren herstellbarer zylinderkopf fuer wassergekuehlte brennkraftmaschinen
DE3546646C2 (en) Oil-cooled internal combustion engine with two-part piston and oil baffle surfaces in the bottom part of the piston
EP1079080B1 (fr) Moteur à combustion interne refroidi par de l'huile
EP3219970A1 (fr) Cylindre pour un gros moteur diesel deux temps lave longitudinalement et gros moteur diesel
AT404163B (de) Zylinderkopf für mehrzylindrige brennkraftmaschine
DE3629673A1 (de) Brennkraftmaschine mit fluessigkeitsgekuehlter zylinderlaufbuchse
DE4119594A1 (de) Fluessigkeitsgekuehlter leichtmetall-zylinderkopf
DE429064C (de) Verbrennungskraftmaschine mit zwei doppelt wirkenden, in zwei Arbeitszylindern laufenden Kolben
DE3615018C1 (en) Valve stem guide for an exhaust valve
DE3609752C2 (fr)
DE4040936A1 (de) Hubkolbenbrennkraftmaschine
DE2729050A1 (de) Zylinderkopf fuer hubkolben-brennkraftmaschinen, insbesondere dieselmotoren
DE19849912A1 (de) Flüssigkeitsgekühlte Brennkraftmaschine
EP0483134A1 (fr) Moteur a combustion interne.
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

Designated state(s): DE FR GB IT SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT SE

17P Request for examination filed

Effective date: 19880429

17Q First examination report despatched

Effective date: 19881021

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 SE

REF Corresponds to:

Ref document number: 3581093

Country of ref document: DE

Date of ref document: 19910207

ITF It: translation for a ep patent filed

Owner name: DE DOMINICIS & MAYER S.R.L.

ITTA It: last paid annual fee
ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
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
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19920101

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

Ref country code: FR

Payment date: 19940307

Year of fee payment: 10

EAL Se: european patent in force in sweden

Ref document number: 85102582.5

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

Ref country code: GB

Payment date: 19950227

Year of fee payment: 11

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

Ref country code: SE

Payment date: 19950309

Year of fee payment: 11

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

Ref country code: FR

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

Effective date: 19951130

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

Ref country code: GB

Effective date: 19960307

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

Ref country code: SE

Effective date: 19960308

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19960307

EUG Se: european patent has lapsed

Ref document number: 85102582.5