EP0509956B1 - Agencement de refroidissement d'un cylindre d'un moteur à combustion interne du type Diesel - Google Patents

Agencement de refroidissement d'un cylindre d'un moteur à combustion interne du type Diesel Download PDF

Info

Publication number
EP0509956B1
EP0509956B1 EP92810209A EP92810209A EP0509956B1 EP 0509956 B1 EP0509956 B1 EP 0509956B1 EP 92810209 A EP92810209 A EP 92810209A EP 92810209 A EP92810209 A EP 92810209A EP 0509956 B1 EP0509956 B1 EP 0509956B1
Authority
EP
European Patent Office
Prior art keywords
line
cylinder
coolant
leading
annular chamber
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
EP92810209A
Other languages
German (de)
English (en)
Other versions
EP0509956A1 (fr
Inventor
Alois Bitterli
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.)
Winterthur Gas and Diesel AG
Original Assignee
Winterthur Gas and Diesel 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 Winterthur Gas and Diesel AG filed Critical Winterthur Gas and Diesel AG
Publication of EP0509956A1 publication Critical patent/EP0509956A1/fr
Application granted granted Critical
Publication of EP0509956B1 publication Critical patent/EP0509956B1/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
    • 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
    • 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
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
    • 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
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • F02F1/14—Cylinders with means for directing, guiding or distributing liquid stream
    • 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
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • F02F1/16—Cylinder liners of wet type
    • 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
    • F01P2003/021—Cooling cylinders
    • 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
    • F01P2003/024—Cooling cylinder heads
    • 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
    • F01P2003/027—Cooling cylinders and cylinder heads in parallel
    • 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
    • F01P2025/00—Measuring
    • F01P2025/60—Operating parameters
    • 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
    • F01P2025/00—Measuring
    • F01P2025/60—Operating parameters
    • F01P2025/62—Load
    • 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
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • F02F2001/104—Cylinders; Cylinder heads  having cooling means for liquid cooling using an open deck, i.e. the water jacket is open at the block top face

Definitions

  • the invention relates to an arrangement for the cylinder cooling of a reciprocating piston internal combustion engine of the diesel type, with at least one cylinder insert arranged in a cylinder block, which is surrounded by an annular space through which coolant flows and which is spanned by a cylinder cover through which coolant coming from the annular space flows, the coolant after flowing back through the cylinder cover via a cooler to the annulus.
  • the amount of coolant coming from the cooler flows successively first through the annular space, then through the cooling channels present in the upper thickened end of the cylinder insert and finally through the cylinder cover.
  • the amount of coolant is adjusted so that at 100% load of the internal combustion engine the temperature of the inner surface of the cylinder insert, which forms the running surface for the working piston, is always slightly above the dew point temperature of water. This avoids that - due to the high sulfur content (4% and more) of the fuels used in diesel internal combustion engines today - sulphurous acid (H2SO3) and sulfuric acid (H2SO4) lead to corrosion on the combustion chamber walls.
  • the sulfurous acid is the more unpleasant one because the combustion product necessary for its formation, namely SO2, is produced in larger quantities and at lower temperatures than the SO3 necessary for the formation of sulfuric acid.
  • the condensate of the sulfuric acid which only appears in small quantities, can also be neutralized with lubricating oil additives. If the dew point temperature for water is undershot, considerable condensation of sulfuric acid is to be expected, which can result in adhesive wear on the running surface of the cylinder insert due to the destroyed lubricating oil film and on the running surfaces of the piston rings as well as on the running surface of the cylinder insert. In the known arrangement, falling below the dew point temperature can easily occur during part-load operation of the reciprocating piston internal combustion engine.
  • a further arrangement for cooling a cylinder block and a cylinder cover is known from EP 0 038 556.
  • the cylinder cover and the cylinder block are cooled with a separate liquid flow and with a liquid flowing essentially transversely to the direction of travel of a cylinder, in order to keep the cylinder head at a lower temperature than the cylinder block.
  • a disadvantage of this device can be seen in the fact that if it were operated with a fuel with a high sulfur content, a considerable condensation of sulfurous acid can be expected on the cylinder cover.
  • the invention has for its object to improve a cooling arrangement of the type mentioned in such a way that formation of sulfurous acid is reliably avoided even at part-load operation of the internal combustion engine.
  • a line leading to the cylinder cover branches from the line leading from the cooler to the annular space
  • a controller is provided which, depending on the load, distributes the coolant quantity coming from the line leading to the annular space and the line leading to the cylinder cover
  • a bypass line is connected to the coolant line between the cylinder cover and the radiator and opens into the line leading to the annular space below the branch of the line leading to the cylinder cover. Due to the line leading to the cylinder cover, part of the coolant quantity is always fed directly to the cylinder cover during operation of the internal combustion engine.
  • 1 denotes a cylinder block of a multi-cylinder reciprocating piston internal combustion engine of the diesel type
  • 2 denotes a cylinder insert which is inserted in the cylinder block 1 and protrudes from the cylinder block with its upper end
  • 3 denotes a cylinder cover spanning the cylinder insert 2.
  • the three parts mentioned of the cylinder are cooled by a liquid coolant, for example water, for which a main circuit 5 and a secondary circuit 13 are provided.
  • the main circuit 5 consists of a line 6 extending from the cylinder cover 3, a cooler 7 connected to the line 6, a coolant pump 8 and a line 9 which leads from the cooler 7 to the cylinder block 1 and in which the coolant pump 8 is arranged.
  • the main circuit 5 also includes a bypass line 11 which bypasses the cooler 7.
  • a distribution valve 12 is arranged, which, depending on its temperature, divides the coolant coming from the valve cover 3 and flowing in the main circuit 5 into a quantity flowing into the cooler 7 and a quantity flowing through the bypass line 11.
  • a distribution valve 17 namely between the coolant pump 8 and the cylinder block 1.
  • a distribution line 6 'and 9' arranged to which the other cylinders, not shown, of the internal combustion engine are connected.
  • the secondary circuit 13 consists of a coolant pump 14 containing line 15 which branches off from the distribution line 6 'and opens into the distribution line 9'. From the distribution valve 17 branches off a line 16 which opens directly into the cylinder block 3 and in which the distribution lines 6 'and 9' corresponding distribution line 16 'is arranged.
  • the distribution valve 17 is under the influence of a regulator 18, which is connected to the load of the internal combustion engine via a signal line 19 dependent target signal receives. In addition to the target signal, the controller also receives at least one actual value signal which is directly or indirectly dependent on the temperature of the running surface of the cylinder insert 2 and which is supplied via the signal line 20.
  • the lower half of the cylinder insert 2 projects into the cylinder block 1, which, separated by a wall 1 ', has an upper space 22 through which coolant flows and a lower space 23 through which purge air flows.
  • the cylinder insert 2 has, in its lower region and distributed over its circumference, a plurality of flushing slots 24 which let purge air from the purge air space 23 into the cylinder insert when the working piston 50, which is shown only rudimentary in its upper dead center OTP, near its lower dead center UTP exposes the flushing slots 24.
  • the cylinder insert 2, the tread is denoted by 2 ', is provided at its upper end with the cylinder cover 3, in which a plate-shaped outlet valve 25 is arranged approximately in the center of the cylinder insert.
  • an exhaust duct 26 is provided in the cylinder cover 3, via which the exhaust gases are expelled by the piston 50 moving upward when the valve 25 is open.
  • the machine shown is therefore a two-stroke internal combustion engine with longitudinal purging. It can be used to drive ships as well as to drive electrical generators.
  • the cylinder cover 3 also has spaces 27 and 28 through which coolant flows.
  • a sleeve 30 is arranged, which extends approximately in the central region of the cylinder insert over approximately half its length.
  • the sleeve has a little on its outer surface projecting ring approach with which it is supported on a shoulder at the opening 51.
  • the lower end of the sleeve 30 is held by a ring 31 while maintaining a distance from the cylinder insert.
  • the cylinder insert 2 is somewhat thickened, so that there is a narrow annular gap 32 between the upper end of the sleeve 30 and the adjacent outer surface of the cylinder insert, as shown in FIG. 2a.
  • This design creates an annular space 33 between the sleeve 30 and the region of the cylinder insert 2 which is adjacent to it and which is essentially filled with stagnant coolant.
  • the coolant temperature in the intermediate space 33 can be preset within certain limits.
  • the intermediate space 33 can have a low flow, for which purpose a valve 33 'is provided in a drain line connected to the intermediate space, as shown in FIG.
  • the valve 33 ' also serves to empty the intermediate space 33.
  • the cylinder block 1 has in its wall above the room 22 a supply channel 34 for coolant, to which the end of the line 9 coming from the distribution line 9 'is connected in a manner not shown.
  • the cylinder insert 2 is thickened in the form of a collar at its upper end and, in this thickened region, has cooling bores 35 which run obliquely in a manner known per se and are uniformly distributed over the circumference of the cylinder insert.
  • a support ring 36 extends between the underside of the collar-shaped thickening of the cylinder insert 2 and the cylinder block 1, leaving an annular space 37 between itself and the cylinder insert 2 and an annular space 38 between itself and the upper half of the sleeve 30.
  • the coolant from line 9 therefore initially flows in via cooling channel 34 the annular space 38, then into the annular space 37 and from there into the cooling holes 35 of the collar-shaped thickening.
  • the coolant heated in the cylinder flows via line 6 and the distribution valve 12 to the cooler 7, in which the absorbed heat e.g. is released to seawater flowing on the secondary side.
  • the coolant cooled in this way is conveyed by the pump 8 via line 9 to cylinder block 1 and via line 16 to cylinder cover 3.
  • the coolant quantities flowing to the cylinder block 1 and the cylinder cover 3 are set by the distribution valve 17, which is controlled by the controller 18 as a function of the load.
  • a small amount of higher temperature coolant is always added to the amount of coolant flowing to the cylinder block 1 via the line 15 of the secondary circuit 13 because it has not been cooled in the cooler 7.
  • the coolant flowing to the cylinder block 1 first reaches the annular space 38 via the cooling channel 34. Because of the coolant stagnating in the intermediate space 33, a moderate heat transfer from the cylinder insert 2 to the coolant takes place here. In the annular space 37 above the sleeve 30, the heat transfer is then more intensive because the flowing coolant comes into contact with the cylinder insert 2 here. The same then also applies when the coolant flows through the cooling bores 35. After leaving the cooling bores 35 and before the coolant enters the space 27 of the cylinder cover 3, the reheated coolant becomes in cooler coolant from line 16 is mixed into line 39.
  • the circuit shown in FIG. 1 thus supplies the cylinder block 1 with a reduced amount of coolant, which is relatively warm due to the admixture of coolant from the line 15 and thus reduces the cooling effect on the cylinder insert 2 accordingly.
  • the space 27 in the cylinder cover 3, however, is always acted upon by the full amount of coolant of a relatively cool temperature.
  • the cooling effect is weakened by the load-dependent adjustment of the amount of coolant by means of the distribution valve 17. So that the temperatures on the tread 2 'of the cylinder insert 2 are raised compared to the previously usual cooling. This can be seen from Figure 3 for an engine load of 100%.
  • the solid line B shows the profile of the tread temperature with a previously customary cooling
  • the dash-dotted line C shows the profile of the tread temperature for the arrangement according to the invention.
  • the dashed line D shows the course of the dew point temperature for water. From the course of line C there is a clear distance between the tread temperature and the course of the dew point temperature. Because of the small distance between line B and the dew point temperature line D, the tread temperature in FIG. 3 shifts to the right in the known arrangement at partial load of the internal combustion engine, so that the dew point temperature line D falls below, as is the case for 50% load in FIG. 4 is shown. With the new cooling arrangement, however, the tread temperature (line C) remains above the dew point temperature line D even at partial load.
  • FIGS. 3 and 4 The structural design of the cylinder block, cylinder insert and support ring in FIGS. 3 and 4 thus corresponds to the prior art.
  • the pump 8 of the main circuit in the line 6 upstream of the distribution valve 12 and then to have the line 15 of the secondary circuit 13 branch off between this pump and the distribution valve 12.
  • the pump 14 of the secondary circuit can be omitted and is replaced by a throttle point in line 15.
  • the internal combustion engine is equipped with a turbocharger, this can also be cooled by a subset of the coolant from the main circuit 5.
  • a coolant line containing the turbocharger will be branched off on the line 9 between the coolant pump 8 and the distribution valve 17 and open into the distribution line 6 '.

Landscapes

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

Claims (2)

  1. Agencement de refroidissement d'un cylindre d'un moteur à combustion interne, à pistons alternatifs, de type Diesel, avec au moins une chemise de cylindre (2), disposée dans un bloc de cylindres (1), chemise qui est entourée par une chambre annulaire (38), parcourue par un agent de refroidissement et qui est recouverte par un couvercle de cylindre (3),qui est parcouru par l'agent de refroidissement, provenant de la chambre annulaire (38) et s'écoulant le long de la chemise du cylindre (2),l'agent de refroidissement revenant à la chambre annulaire (38), via un radiateur (7), après être passé à travers le couvercle du cylindre (3), agencement caractérisé en ce que de la conduite (9) qui mène du radiateur (7) à la chambre annulaire (38) part une conduite (16), qui mène au couvercle du cylindre (3), en ce qu'il est prévu un régulateur (18), qui répartit la quantité d'agent de refroidissement, provenant du radiateur (7), en fonction de la charge du moteur à combustion interne, entre la conduite (9) qui va à la chambre annulaire (38) et la conduite (16) qui va au couvercle du cylindre (3) et en ce qu'une conduite de dérivation (11) est raccordée à la conduite d'agent de refroidissement (5) entre le couvercle du cylindre (3) et le radiateur (7), conduite de dérivation qui débouche en aval de la dérivation de la conduite (5), qui va au couvercle du cylindre (3), dans la conduite (9) qui va à la chambre annulaire (38).
  2. Agencement selon la revendication 1, caractérisé en ce que la chemise du cylindre (2) est entourée dans sa zone médiane par un manchon (30), qui est à moitié aussi long que la chemise du cylindre (2) et qui laisse libre entre lui et la chemise du cylindre (2) une chambre intermédiaire (33) de forme annulaire, qui dans la zone de l'extrémité supérieure du manchon (30) est en liaison par un point d'étranglement (32) avec la chambre annulaire (38) et est rempli, quand le moteur est en fonctionnement, d'agent de refroidissement qui stagne.
EP92810209A 1991-04-18 1992-03-23 Agencement de refroidissement d'un cylindre d'un moteur à combustion interne du type Diesel Expired - Lifetime EP0509956B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH117091 1991-04-18
CH1170/91 1991-04-18

Publications (2)

Publication Number Publication Date
EP0509956A1 EP0509956A1 (fr) 1992-10-21
EP0509956B1 true EP0509956B1 (fr) 1995-10-18

Family

ID=4204126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92810209A Expired - Lifetime EP0509956B1 (fr) 1991-04-18 1992-03-23 Agencement de refroidissement d'un cylindre d'un moteur à combustion interne du type Diesel

Country Status (5)

Country Link
EP (1) EP0509956B1 (fr)
JP (1) JP3444606B2 (fr)
KR (1) KR100257921B1 (fr)
DE (1) DE59204029D1 (fr)
DK (1) DK0509956T3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3379354B2 (ja) * 1996-10-07 2003-02-24 トヨタ自動車株式会社 ２系統冷却装置付き内燃機関の排気再循環制御装置
KR101385792B1 (ko) * 2009-06-29 2014-04-16 에이치.세지엘스키-서비스 에스피. 지 오.오. 저속 압축-점화 2-행정 엔진에서 피스톤-실린더 라이너 유닛용 작동 파라미터 결정 방법
EP2848786A1 (fr) * 2013-09-11 2015-03-18 Wärtsilä Schweiz AG Agencement linéaire de cylindre pour un moteur à combustion interne à piston élévateur et procédé de refroidissement
WO2017017717A1 (fr) * 2015-07-24 2017-02-02 日本郵船株式会社 Dispositif pour spécifier la facilité d'apparition de corrosion à basse température dans un cylindre de moteur, programme et support d'enregistrement
EP3693566A1 (fr) * 2019-02-08 2020-08-12 Winterthur Gas & Diesel AG Agencement de cylindre pour un gros moteur ainsi que procédé de refroidissement

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1942846A1 (de) * 1969-08-22 1971-03-04 Caterpillar Tractor Co Zylinderbuechsenhalterung mit verbesserter Kuehlung
JPS56148610A (en) * 1980-04-18 1981-11-18 Toyota Motor Corp Cooling device for engine
US4440118A (en) * 1980-05-13 1984-04-03 Cummins Engine Company, Inc. Oil cooled internal combustion engine

Also Published As

Publication number Publication date
KR100257921B1 (ko) 2000-06-01
EP0509956A1 (fr) 1992-10-21
DK0509956T3 (da) 1995-11-27
KR920020059A (ko) 1992-11-20
DE59204029D1 (de) 1995-11-23
JPH05171933A (ja) 1993-07-09
JP3444606B2 (ja) 2003-09-08

Similar Documents

Publication Publication Date Title
DE19633190B4 (de) Kühlsystem für eine Brennkraftmaschine
DE3217064C2 (fr)
DE102004041186B4 (de) Brennkraftmaschine der Kompressionszündungsbauart
EP0313583B1 (fr) Injection de carburant pour moteur diesel a injection directe
DE3102628A1 (de) Geteilter v-verbrennungsmotor
DE102015007393B4 (de) Abgasrückführungssystem für eine Brennkraftmaschine
EP0509956B1 (fr) Agencement de refroidissement d'un cylindre d'un moteur à combustion interne du type Diesel
EP0814243B1 (fr) Système de refroidissment pour la chemise du cylindre d'un moteur à combustion interne
DE3214855C2 (fr)
DE69711608T2 (de) Methode und einrichtung zur rückgewinnung von wärme aus der ladeluft eines motors
DE3516253A1 (de) Einrichtung zum betrieb einer kolbenbrennkraftmaschine mit einem brennstoff relativ hoher viskositaet
DE3618794A1 (de) Oelgekuehlte brennkraftmaschine
DE2856595A1 (de) Kraftstoff-steuerventil fuer mehrzylinder-dieselmotoren
EP1280984A1 (fr) Circuit de refroidissement pour moteur a combustion interne multicylindre
DE2523436A1 (de) Fluessigkeitskuehlsystem fuer eine brennkraftmaschine
WO2003024559A1 (fr) Procede et dispositif de degazage thermique
AT524566B1 (de) Flüssigkeitsgekühlte Brennkraftmaschine
AT522272A1 (de) Brennkraftmaschine
DE2331556A1 (de) Brennkraftmaschine
EP1280985B1 (fr) Circuit de refroidissement pour moteur a combustion interne multicylindre
DE69202890T2 (de) Zylinderlaufbüchse.
DE3608294A1 (de) Fluessigkeitskuehlsystem fuer eine brennkraftmaschine
DE7911903U1 (de) Zylindereinsatz einer hubkolbenbrennkraftmaschine
DE249403C (fr)
DE69918362T2 (de) Brennkraftmaschine mit Hilfseinlasskanal

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): CH DE DK FR IT LI

17P Request for examination filed

Effective date: 19930326

17Q First examination report despatched

Effective date: 19940624

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE DK FR IT LI

REF Corresponds to:

Ref document number: 59204029

Country of ref document: DE

Date of ref document: 19951123

ITF It: translation for a ep patent filed
REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

ET Fr: translation filed
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: DK

Payment date: 20090313

Year of fee payment: 18

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

Ref country code: CH

Payment date: 20090316

Year of fee payment: 18

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

Ref country code: IT

Payment date: 20090325

Year of fee payment: 18

Ref country code: DE

Payment date: 20090320

Year of fee payment: 18

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

Ref country code: FR

Payment date: 20090312

Year of fee payment: 18

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20101130

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: 20100331

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

Ref country code: LI

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

Effective date: 20100331

Ref country code: DE

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

Effective date: 20101001

Ref country code: CH

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

Effective date: 20100331

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

Ref country code: IT

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

Effective date: 20100323

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

Ref country code: DK

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

Effective date: 20100331