EP0851101B1 - Moteur diesel - Google Patents

Moteur diesel Download PDF

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Publication number
EP0851101B1
EP0851101B1 EP96810903A EP96810903A EP0851101B1 EP 0851101 B1 EP0851101 B1 EP 0851101B1 EP 96810903 A EP96810903 A EP 96810903A EP 96810903 A EP96810903 A EP 96810903A EP 0851101 B1 EP0851101 B1 EP 0851101B1
Authority
EP
European Patent Office
Prior art keywords
piston
diesel engine
slider
accordance
cylinder liner
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
EP96810903A
Other languages
German (de)
English (en)
Other versions
EP0851101A1 (fr
Inventor
Herbert Zehnder
Christian Just
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.)
Wartsila NSD Schweiz AG
Original Assignee
Wartsila NSD Schweiz 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 Wartsila NSD Schweiz AG filed Critical Wartsila NSD Schweiz AG
Priority to EP96810903A priority Critical patent/EP0851101B1/fr
Priority to DE59609434T priority patent/DE59609434D1/de
Priority to DK96810903T priority patent/DK0851101T3/da
Priority to KR1019970060406A priority patent/KR19980063585A/ko
Priority to CN97125587A priority patent/CN1089853C/zh
Priority to JP35555297A priority patent/JPH10196326A/ja
Publication of EP0851101A1 publication Critical patent/EP0851101A1/fr
Application granted granted Critical
Publication of EP0851101B1 publication Critical patent/EP0851101B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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 
    • F02F1/18—Other cylinders
    • F02F1/22—Other cylinders characterised by having ports in cylinder wall for scavenging or charging
    • 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
    • F01L5/00—Slide valve-gear or valve-arrangements
    • F01L5/04—Slide valve-gear or valve-arrangements with cylindrical, sleeve, or part-annularly shaped valves
    • F01L5/06—Slide valve-gear or valve-arrangements with cylindrical, sleeve, or part-annularly shaped valves surrounding working cylinder or piston
    • 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
    • F01L5/00—Slide valve-gear or valve-arrangements
    • F01L5/20—Slide valve-gear or valve-arrangements specially for two-stroke engines
    • 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
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
    • 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
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F2007/0097—Casings, e.g. crankcases or frames for large diesel engines

Definitions

  • the present invention relates to a Diesel engine according to the generic term of the independent Claim 1.
  • Modern, large two-stroke diesel engines usually have one Longitudinal flushing of the working cylinder. That the purge air enters via fixed flushing slots in the cylinder liner in the Cylinder space as soon as the piston is below this Flush slots. The new, unused purge air flows through the flushing slots in the cylinder liner and the combustion chamber and pushes the exhaust gases through one or more Exhaust valves in the cylinder cover in the exhaust system.
  • One of the objects of the present invention is an engine to create, in which the purge air even in the absence a stuffing box does not flow into the crankcase space. According to the invention, such a motor has the features of the characterizing part of independent claim 1.
  • the dependent claims relate to advantageous Embodiments of the invention.
  • the new engine according to the invention can, if the Gland can be built lower. This is particularly so advantageous for marine engines if the clearance above the Engine necessary for repair and service work is, can be smaller. If the piston rod consists of several parts the removal and installation or replacement of the Piston rod even when there is little free space above the engine possible.
  • the diesel engine with cylinder liner, in which the piston moves, has a slide which on the the lower end of the cylinder liner adjoins, and the with the cylinder liner forms a slide valve.
  • the Slider moves with the movement of the piston, in Area of bottom dead center, from the cylinder liner away, between the cylinder liner and slide a ring-like opening, the flushing gap, for feeding from purge air to the piston chamber.
  • the rinsing gap closes again when the piston moves towards the top Reversal point moved.
  • This new construction of the Diesel engine is particularly suitable for slow-running, long-stroke two-stroke large diesel engines with longitudinal flushing and Crosshead, as used for ships and for power plants Power generation can be used. With the new construction the stuffing box seal to the engine compartment can be omitted, what a lower design of the engine enables.
  • the diesel engine of Fig. 2 to 4, with cross head (not shown), is constructed according to the invention.
  • the Cylinder liner 21 has no flushing slots on lower area.
  • Cylinder liner 21 is a flushing slide or slide 24 present, which follows with the movement of the piston 20 moved down and up again. Doing so opens and the rinsing gap 210 closes between Cylinder liner 21 and slide 24 through which the Cylinder liner, cylinder chamber 22 and the combustion chamber with Flushing air is flowed through.
  • An annular piston skirt 201 is attached to the piston 20.
  • the piston 20 with the piston shirt 201 is with the Piston rod 23 connected.
  • Cooling oil is supplied via a channel 230 pumped into the interior of the piston 20.
  • the nozzles 202 inject the oil into the cooling holes 203 in the bottom of the Pistons 20.
  • the cooling oil Return drain channels 204 instead of the previous engines Design where the return for the cooling oil e.g. in one second channel of the piston rod, it is the new one Engine according to the invention possible through the cooling oil Return drain channels 204 to the engine compartment.
  • the drain channels 204 are arranged differently.
  • the Flush valve 24 movable in the longitudinal axis of the cylinder Slider 24 is formed with the annular space Air spring 209 against and to the lower end of the Cylinder liner 21 pressed.
  • the piston 20 moves with the lower control edge 206 towards the opposite edge 241 of the slide, so begins the slide 24 to move gradually with the piston 20.
  • the slide 24 moving with the piston 20 moves down from the cylinder liner 21.
  • the annular gap can be through guide webs 2124 are bridged by the rebound of the piston rings Prevent 205 in the annular gap 210. If there are no boardwalks 2124 are present, the piston rings 205 rebound in the annular gap 210 only possible if the air spring 209 fails.
  • the piston 20 moves again towards the top Dead center, so the slide 24 follows that of the air spring 206 is driven, the piston 20 and closes the Flushing gap 210 again. While the piston 20 is in the Cylinder liner 21 continues towards the top Dead center moves, the slider 24 pushes delayed and damped at the bottom of the cylinder liner 21. The annular gap 210 for the purge air is closed again.
  • the Purge air space 211 remains against the crankcase space or the engine compartment constantly separated.
  • the slide 24 follows, driven from the air spring 209, the piston 20.
  • the slide 24 but could also with a hydraulic Drive device (not shown) are driven.
  • the delay of the slide 24 during the Closing process from piston speed to the permissible Setting speed for the slide 24 on the Cylinder liner 21 is made using compressed air filled damping space 243 after the edge 242 the Volume of the ring-shaped damping space 243 closed Has.
  • the slider 24 is constructed so that the upper and the purge air is applied to the lower side. If the top and the lower side is the same in the direction of movement projected areas, the influence of Purge air and in particular changes to the Purge air pressure neutralized, i.e. they have no influence on the movement of the slide 24.
  • the movement of the Slider 24 can be projected by unequal size Surfaces, resulting in a resulting force on the slider 24, in one or in the opposite other Direction leads, also influenced in a desired way become.
  • the flushing gap 210 with the vertical guide webs can an adjustable ring of baffles can be placed in front.
  • the purge air flowing into the cylinder chamber 22 can thus a swirl adapted to the respective operating state mediated.
  • the cylinder surface becomes intensive with lubricating oil wetted. This flows on the inner wall of the Cylinder liner 21 and the slide 24 in that Engine crankcase back.
  • the draining lubricating oil forms after the control edge 206 of the Piston support ring 208 on the opposite edge 241 of the slide 24, together with the air in the now closed damping volume 207 below the piston shirt 201 a damping Mixture.
  • the piston shirt 201 serves as a centering element between the piston 20 and the piston support ring 208 and wears an oil control ring.
  • the elimination of the piston rod stuffing box 12 (FIG. 1) enables motors with a stroke / bore ratio of about 4: 1 the reduction in the overall height of the engine by about 30% of the size of the cylinder bore, otherwise unchanged dimensions (relative push rod length).
  • the Length of the cylinder liner 21 can be omitted Purge air slots reduced by approximately 85% of the cylinder bore become.
  • the connecting screws between the piston rod 23 and the piston support ring 208 are good from the crankcase accessible.
  • the connection can be used for overhaul work be solved, causing the piston rod to be removed unnecessary.
  • the piston extension height is thus reduced about the length of the piston rod.
  • Cylinder liner 21 and slide 24 from different To manufacture materials.
  • the Slide 24 be made of a material that against those that occur chemically in the lower, rather cool part Corrosive acids such as sulphurous acid are particularly resistant is.
  • the cylinder liner 23 as a separate one Component is described, could be the cylinder liner of course, be part of the engine block. If in Connection with cylinder liner 21 or piston 20 of spoken below and above should, as in Engine construction usual, the top dead center of the piston 20 as above and the bottom dead center of the piston 20 as below, regardless of the actual position of the cylinder.
  • the invention is for Suitable for engines regardless of the number of cylinders.
  • the ring-like opening is the Annular gap 210 with flat boundary surfaces on the slide 24 and shown on the cylinder liner 21.
  • the interface between cylinder liner 21 and slide 24 could for example, also considered the scope wavy, zigzag. It would be the same conceivable, the separating surface, viewed radially, for example to train in a step-like or wavy manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Claims (12)

  1. Moteur diesel, notamment grand moteur diesel à deux temps, avec une chemise de cylindre (21) dans laquelle se déplace le piston (20), caractérisé par une coulisse (24) qui avoisine l'extrémité inférieure de la chemise de cylindre (21), et qui forme avec la chemise de cylindre (21) une soupape à coulisse, où la coulisse (24), avec le déplacement du piston (20), est éloignée de la chemise de cylindre (21) et, ce faisant, il se forme entre la chemise de cylindre (21) et la coulisse (24) une ouverture annulaire (210) pour l'amenée d'air de rinçage à l'enceinte (22) du cylindre, qui se ferme de nouveau lorsque le piston (20) se déplace en direction du point d'inversion supérieur.
  2. Moteur diesel selon la revendication 1, où le piston (20) entraíne la coulisse (24) en vue du déplacement en va-et-vient.
  3. Moteur diesel selon l'une des revendications 1 ou 2, où est disposée entre le piston (20) et la coulisse (24) une première installation à ressort et/ou d'amortissement (206) et d'autres installations à ressort et/ou d'amortissement (207) sont présentes, qui soutiennent élastiquement ou empêchent et/ou amortissent le mouvement de va-et-vient de la coulisse (24) dans la direction de déplacement.
  4. Moteur diesel selon la revendication 3, où les installations à ressort et/ou d'amortissement (206) fonctionnent au moins partiellement d'une manière pneumatique et/ou hydraulique.
  5. Moteur diesel selon l'une des revendications 3 ou 4, où au moins une, de préférence plusieurs installations à ressort et/ou d'amortissement (207) sont chargées en air de rinçage du moteur.
  6. Moteur diesel selon l'une des revendications 1 à 5, où la coulisse (24) est guidée avec des parties de guidage (2124) par rapport à la chemise de cylindre (21).
  7. Moteur diesel selon l'une des revendications 1 à 6, où la face de séparation entre la coulisse (24) et la chemise de cylindre (21) est réalisée en forme d'anneau ou d'une manière ondulée.
  8. Moteur diesel selon l'une des revendications 1 à 7, où la coulisse (24) et la chemise de cylindre (21) sont fabriquées en des matériaux différents.
  9. Moteur diesel selon l'une des revendications 1 à 8, avec des aubes directrices (212), de préférence des aubes directrices ajustables dans l'amenée d'air de rinçage (211) vers l'enceinte du cylindre et l'enceinte de combustion (22).
  10. Moteur diesel selon l'une des revendications 1 à 9, avec des pistons (20) refroidis à l'huile et avec des canaux de retour (204) dans le piston (20) qui mènent directement dans l'enceinte du cylindre respectivement dans la boíte de manivelle en dessous du piston (20).
  11. Moteur diesel selon l'une des revendications 1 à 10, avec un entraínement mécanique (20) et/ou pneumatique (209), hydraulique et/ou hydraulique-pneumatique, fonctionnant de préférence d'une manière pneumatique (209 ; 207) pour le mouvement de va-et-vient de la coulisse (24).
  12. Moteur diesel selon l'une des revendications 1 à 9, qui est un grand moteur diesel à deux temps tournant lentement, avec une crosse de piston et avec un rinçage longitudinal de l'enceinte du cylindre (22) respectivement de l'enceinte de combustion (22), avec une course de piston supérieure à un mètre, de préférence supérieure à trois mètres, où la tige de piston (23) est réalisée en plusieurs parties entre la crosse de piston et le piston (20).
EP96810903A 1996-12-24 1996-12-24 Moteur diesel Expired - Lifetime EP0851101B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP96810903A EP0851101B1 (fr) 1996-12-24 1996-12-24 Moteur diesel
DE59609434T DE59609434D1 (de) 1996-12-24 1996-12-24 Dieselmotor
DK96810903T DK0851101T3 (da) 1996-12-24 1996-12-24 Dieselmotor
KR1019970060406A KR19980063585A (ko) 1996-12-24 1997-11-17 디젤 엔진
CN97125587A CN1089853C (zh) 1996-12-24 1997-12-23 柴油机
JP35555297A JPH10196326A (ja) 1996-12-24 1997-12-24 ディーゼルエンジン

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96810903A EP0851101B1 (fr) 1996-12-24 1996-12-24 Moteur diesel

Publications (2)

Publication Number Publication Date
EP0851101A1 EP0851101A1 (fr) 1998-07-01
EP0851101B1 true EP0851101B1 (fr) 2002-07-10

Family

ID=8225783

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96810903A Expired - Lifetime EP0851101B1 (fr) 1996-12-24 1996-12-24 Moteur diesel

Country Status (6)

Country Link
EP (1) EP0851101B1 (fr)
JP (1) JPH10196326A (fr)
KR (1) KR19980063585A (fr)
CN (1) CN1089853C (fr)
DE (1) DE59609434D1 (fr)
DK (1) DK0851101T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4166766A1 (fr) * 2021-10-15 2023-04-19 Winterthur Gas & Diesel AG Grand moteur diesel à balayage axial

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0965739A3 (fr) * 1998-06-15 2000-07-26 Wärtsilä NSD Schweiz AG Moteur diesel
EP0965738A1 (fr) * 1998-06-15 1999-12-22 Wärtsilä NSD Schweiz AG Moteur diesel
PL1867860T3 (pl) * 2006-06-16 2009-06-30 Waertsilae Nsd Schweiz Ag Układ tulei cylindrowej
WO2013185802A1 (fr) 2012-06-11 2013-12-19 N2S B.V. Moteur à combustion interne
DE102013008790A1 (de) * 2013-05-22 2014-11-27 Audi Ag Kurbelgehäuse für eine Brennkraftmaschine
EP3037639A3 (fr) * 2014-12-22 2016-07-13 Winterthur Gas & Diesel AG Système de cylindre pour un moteur à combustion à piston élévateur rincé en longueur, ainsi qu'élément d'étranglement pour un revêtement de cylindre
WO2018163237A1 (fr) * 2017-03-06 2018-09-13 株式会社Ihi Moteur deux temps à balayage longitudinal
GB201711254D0 (en) * 2017-07-13 2017-08-30 Knight Brian Russell A two stroke engine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR551947A (fr) * 1922-05-23 1923-04-17 Perfectionnements apportés aux moteurs à combustion interne à deux temps à aspiration et à distribution par tiroir
FR633466A (fr) * 1926-09-02 1928-01-30 Machine motrice ou réceptrice à distribution automatique
US1919829A (en) * 1931-10-01 1933-07-25 Charles G Curtis Two-cycle internal combustion engine
FR966756A (fr) * 1939-11-11 1950-10-18 Moteur à deux temps
US3815566A (en) * 1973-02-08 1974-06-11 J Staggs Engine
JPS5638512A (en) * 1979-09-05 1981-04-13 Mitsubishi Heavy Ind Ltd Two-cycle internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4166766A1 (fr) * 2021-10-15 2023-04-19 Winterthur Gas & Diesel AG Grand moteur diesel à balayage axial

Also Published As

Publication number Publication date
DK0851101T3 (da) 2002-09-02
CN1186156A (zh) 1998-07-01
EP0851101A1 (fr) 1998-07-01
CN1089853C (zh) 2002-08-28
JPH10196326A (ja) 1998-07-28
DE59609434D1 (de) 2002-08-14
KR19980063585A (ko) 1998-10-07

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