WO2013170947A1 - Piston de moteur à combustion interne - Google Patents

Piston de moteur à combustion interne Download PDF

Info

Publication number
WO2013170947A1
WO2013170947A1 PCT/EP2013/001406 EP2013001406W WO2013170947A1 WO 2013170947 A1 WO2013170947 A1 WO 2013170947A1 EP 2013001406 W EP2013001406 W EP 2013001406W WO 2013170947 A1 WO2013170947 A1 WO 2013170947A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
connecting rod
spring element
sliding shoe
shoe
Prior art date
Application number
PCT/EP2013/001406
Other languages
German (de)
English (en)
Inventor
Talat Shaer
Hubert Pelzel
Original Assignee
Man Diesel & Turbo Se
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 Man Diesel & Turbo Se filed Critical Man Diesel & Turbo Se
Priority to CN201380025298.5A priority Critical patent/CN104302902B/zh
Priority to KR1020147034959A priority patent/KR101687090B1/ko
Priority to JP2015503787A priority patent/JP5964497B2/ja
Publication of WO2013170947A1 publication Critical patent/WO2013170947A1/fr
Priority to FI20145895A priority patent/FI126961B/fi

Links

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
    • F02F3/00—Pistons 
    • F02F3/16—Pistons  having cooling means
    • F02F3/20—Pistons  having cooling means the means being a fluid flowing through or along piston
    • F02F3/22—Pistons  having cooling means the means being a fluid flowing through or along piston the fluid being liquid
    • 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
    • F01P3/06—Arrangements for cooling pistons
    • F01P3/10—Cooling by flow of coolant through pistons
    • 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
    • F01M1/06—Lubricating systems characterised by the provision therein of crankshafts or connecting rods with lubricant passageways, e.g. bores
    • 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
    • F02F3/00—Pistons 
    • F02F3/0015—Multi-part pistons
    • 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
    • F02F3/00—Pistons 
    • F02F3/16—Pistons  having cooling means
    • F02F3/20—Pistons  having cooling means the means being a fluid flowing through or along piston
    • F02F3/22—Pistons  having cooling means the means being a fluid flowing through or along piston the fluid being liquid
    • F02F3/225—Pistons  having cooling means the means being a fluid flowing through or along piston the fluid being liquid the liquid being directed into blind holes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J1/00—Pistons; Trunk pistons; Plungers
    • F16J1/09—Pistons; Trunk pistons; Plungers with means for guiding fluids

Definitions

  • the invention relates to a piston of an internal combustion engine according to the preamble of claim 1. Furthermore, the invention relates to a sliding block for such a piston of an internal combustion engine according to the preamble of claim 8.
  • a piston of an internal combustion engine which comprises a piston upper part and a lower piston part, which are preferably screwed together.
  • a piston pin is mounted, wherein the piston pin is used to connect the piston to a connecting rod of the internal combustion engine.
  • the piston according to DE 35 18 721 C2 is oil-cooled, wherein on the one hand an inner cooling space for cooling oil and on the other hand an outer cooling space for cooling oil is formed between the piston upper part and the piston lower part, and wherein the inner cooling space is connected to the outer cooling space via at least one Matterleitbohrung.
  • a feed bore for cooling oil is integrated into the connecting rod according to this prior art, wherein the cooling oil, starting from the connecting rod in the inner cooling space can be converted using a two-piece cooling oil supply.
  • a first, neck-like part of the two-part cooling oil guide sleeve is fixed immovably in the lower piston part of the piston according to DE 35 18 721 C2.
  • a bore 7 is introduced into the sliding block 4, which penetrates both the neck-like end 5 and the funnel-like end 6 of the sliding shoe 7 and widens like a funnel in the funnel-like end 6.
  • a guide surface 8 for the sliding shoe 4 is formed between the sliding shoe 4 and the piston lower part 2, namely in the region of the neck-like end 5 of the sliding shoe 4 adjacent to the funnel-like end 6 thereof.
  • a spring element 9, which can be pressed the sliding shoe 4 in a connecting rod, not shown in Fig. 1, is supported on the one hand on the shoe 4 and on the other hand on the lower housing part 2, wherein seen in the axial direction of the piston or the shoe 4 this spring element 9 in series to the guide surface 8 is arranged.
  • the so-called compression height is a characteristic parameter, wherein the compression height corresponds to the distance between the axis of the piston pin and an upper edge of the piston.
  • the overall height of an internal combustion engine is determined inter alia by this compression height of the or each piston of the internal combustion engine.
  • Another characteristic parameter of a piston of an internal combustion engine which has an influence on the overall height of the internal combustion engine, is a so-called piston-chamber depth of a piston recess formed in the region of the piston upper part. Relatively deep piston recesses can improve the combustion in the cylinder of the respective internal combustion engine in which the respective piston is used. The deeper a piston recess is made, the higher, however, the compression height and thus height of the engine. Proceeding from this, the present invention has the object to provide a novel piston of an internal combustion engine and a novel sliding block for such a piston.
  • the spring element extends in the axial direction of the piston or sliding shoe at least in sections parallel to the guide surface for the one-piece sliding shoe.
  • the guide surface for the one-piece sliding shoe surrounds the spring element radially outside at least in sections.
  • the one-piece shoe has a neck-like end and a funnel-like end, wherein the funnel-like end is pressed by the spring element against the connecting rod of the connecting rod, and wherein starting from the funnel-like end at least in sections radially outward around the neck-like end a projection with Radial distance to the neck-like end extends.
  • the guide surface for the sliding block is formed between the projection and the piston lower part.
  • the spring element extends into a space formed between the projection and the neck-like end.
  • Fig. 1 a section of a known from the prior art
  • FIG. 2 shows a first section of a piston according to the invention in the region of a one-piece sliding shoe
  • FIG. 3 shows a second detail of a piston according to the invention in FIG.
  • Fig. 4 the shoe of Fig. 2 in solo view.
  • the present invention relates to an oil-cooled piston of an internal combustion engine, in particular designed as a diesel engine or gas engine or diesel-gas engine engine, such as a marine diesel engine.
  • a piston is also referred to as a plunger.
  • FIGS. 2 and 3 each show a detail of a piston according to the invention of an internal combustion engine, wherein the piston comprises a piston upper part 10 and a piston lower part 11.
  • the upper piston part 10 and the lower piston part 11 are preferably made of a light metal, steel or nodular cast iron.
  • the piston upper part 10 and the lower piston part 11 are supported on one another and are preferably fastened to one another via fastening means designed as expansion screws.
  • a piston pin 12 is mounted, wherein the piston pin 12 of the connection of the piston to a connecting rod 13 of the internal combustion engine is used.
  • a so-called Pleuelkopf 14 is shown in Fig. 2.
  • an inner cooling chamber 15 and, on the other hand, an outer cooling chamber 16 for cooling oil are formed, wherein the inner cooling chamber 15 is connected to the outer cooling chamber 16 according to FIG. 2 via transfer bores 17.
  • the cooling oil is the inner cooling chamber 15 via a bore 18 can be fed, which extends through the connecting rod 13 and also by the connecting rod 14, wherein the cooling oil from the connecting rod 13 in the inner cooling chamber 15 by means of a shoe 19 can be transferred, in the lower piston part 11 is movably mounted.
  • the sliding shoe 19 movably mounted in the lower piston part 11 is designed as a one-piece sliding shoe 19 and is pressed against the connecting rod 14 of the connecting rod 13 by a spring element 20 for sealing purposes.
  • a guide surface 21 is formed, which serves to guide the piston base 11 movably mounted, one-piece slide shoe 19.
  • the spring element 20 extends in the axial direction of the piston and the sliding block 19 at least in sections parallel to the guide surface 21 for the one-piece sliding shoe 19.
  • a reduced overall height of the sliding shoe 19 can be used to reduce the so-called compression height of the piston, ie the distance between the axis of the piston pin 12 and an upper edge of the piston.
  • a depth of a piston recess 22, which is provided by the piston upper part 10 can thereby be increased at a constant compression height in order to positively influence the combustion of the internal combustion engine.
  • the guide surface 21 for the one-piece sliding shoe 19 surrounds, at least in sections, the spring element 20 radially outward. Accordingly, the spring element 20 is positioned radially within the guide surface 21 for the sliding shoe 19 as viewed in the radial direction of the piston or of the sliding shoe 19.
  • the sliding shoe 19 is used to transfer cooling oil starting from the connecting rod 13 into the inner cooling space 15, with a bore 22 extending in the axial direction through the sliding shoe 19 for this purpose.
  • the one-piece slide shoe 19 has a first, neck-like end 23 and a second funnel-like end 24, wherein the funnel-like end 24 of the slide shoe 19 is pressed by the spring element 20 sealingly against the connecting rod 14 of the connecting rod 13.
  • the second, funnel-like end 24 extends at least partially radially outward around the neck-like end 23 around a projection 25 having a radial distance from the neck-like end 23, so that between the radially inner, neck-like end 23 and the radially outer projection 25th a free space 26 is formed.
  • the guide surface 21 for the sliding shoe 19 is formed between this projection 25 and the lower piston part 11.
  • the present invention further relates to the shown in Fig. 4 in solo view shoe 19 for a piston of an internal combustion engine. To avoid unnecessary repetition, reference is made to the above statements with regard to details of the one-piece sliding shoe 9.
  • a piston recess 22 can be made deeper. Furthermore, with the same depth of the piston recess 22, the compression height of the piston can be reduced. In addition, both effects can be used combinatorial, so on the one hand an increase in the piston bowl depth and on the other hand, a reduction in the compression height of the piston.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne un piston de moteur à combustion interne, comprenant un élément de piston supérieur (10) et un élément de piston inférieur (11), un axe de piston (12) qui est placé dans l'élément de piston inférieur (11) et qui sert à relier le piston à une bielle (13) du moteur à combustion interne, une chambre de refroidissement interne (15) pour l'huile de refroidissement du piston, formée entre l'élément de piston supérieur (10) et l'élément de piston inférieur (11) et reliée par au moins un perçage de transfert (17) à une chambre de refroidissement extérieure (16) formée entre l'élément de piston supérieur (10) et un élément de piston inférieur (11), ainsi qu'un coulisseau monobloc (19), monté mobile dans l'élément de piston inférieur (11) et poussé par un élément à ressort (20) contre une tête (14) de la bielle (13), lequel sert à transférer dans la chambre de refroidissement interne (15) l'huile de refroidissement guidée dans un perçage (18) de la bielle (13). Entre le coulisseau monobloc (19) et l'élément de piston inférieur (11) est formée une surface de guidage (21) pour le coulisseau monobloc (19) et, vu dans la direction axiale du piston ou du coulisseau, l'élément ressort (20) s'étend au moins par endroits parallèlement à la surface de guidage (21) pour le coulisseau monobloc (19).
PCT/EP2013/001406 2012-05-15 2013-05-14 Piston de moteur à combustion interne WO2013170947A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201380025298.5A CN104302902B (zh) 2012-05-15 2013-05-14 内燃机的活塞
KR1020147034959A KR101687090B1 (ko) 2012-05-15 2013-05-14 내연기관의 피스톤
JP2015503787A JP5964497B2 (ja) 2012-05-15 2013-05-14 内燃機関のピストン
FI20145895A FI126961B (fi) 2012-05-15 2014-10-14 Polttomoottorikoneen mäntä

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012208090.2A DE102012208090B4 (de) 2012-05-15 2012-05-15 Kolben einer Brennkraftmaschine
DE102012208090.2 2012-05-15

Publications (1)

Publication Number Publication Date
WO2013170947A1 true WO2013170947A1 (fr) 2013-11-21

Family

ID=48463918

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/001406 WO2013170947A1 (fr) 2012-05-15 2013-05-14 Piston de moteur à combustion interne

Country Status (6)

Country Link
JP (1) JP5964497B2 (fr)
KR (1) KR101687090B1 (fr)
CN (1) CN104302902B (fr)
DE (1) DE102012208090B4 (fr)
FI (1) FI126961B (fr)
WO (1) WO2013170947A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016202643A1 (de) 2016-02-22 2017-08-24 Mahle International Gmbh Kolben einer Brennkraftmaschine
DE102018203417A1 (de) 2018-03-07 2019-09-12 Mahle Lnternational Gmbh Kolbenanordnung einer Brennkraftmaschine
DE102019122877B4 (de) * 2019-08-27 2021-08-19 Man Energy Solutions Se Kolben einer Brennkraftmaschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2241629A (en) * 1940-04-20 1941-05-13 Gen Motors Corp Oil cooled piston
FR1524454A (fr) * 1967-04-19 1968-05-10 Moteur Moderne Le Piston refroidi de moteur diesel
DE3518721C2 (fr) 1985-05-24 1990-10-18 Man B & W Diesel Ag, 8900 Augsburg, De
US20030154855A1 (en) * 2000-05-05 2003-08-21 Dieter Messmer Combustion engine with a built-up piston

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1669290A (en) * 1927-03-04 1928-05-08 Worthington Pump & Mach Corp Piston
GB702002A (en) * 1951-06-27 1954-01-06 Crossley Brothers Ltd Improvements relating to the pistons of internal combustion engines
GB737714A (en) 1953-05-16 1955-09-28 British Leyland Motor Corp Cooling of internal combustion engine pistons
GB1120206A (en) * 1965-07-09 1968-07-17 Wellworthy Ltd Improvements in or relating to pistons for internal combustion engines
US3450113A (en) * 1967-12-08 1969-06-17 Continental Aviat & Eng Corp Valve construction for variable compression ratio piston
SE7712947L (sv) * 1976-11-18 1978-05-19 Nat Res Dev Anordning vid forbrenningsmotorer
FR2575227B1 (fr) * 1984-12-20 1988-12-23 Semt Piston a structure allegee, notamment pour un moteur a combustion interne
DE3702694C1 (en) * 1987-01-30 1988-04-21 Mahle Gmbh Oil-cooled piston for internal combustion engines, especially for diesel engines
DE4018252A1 (de) * 1990-06-07 1991-12-12 Man B & W Diesel Ag Oelgekuehlter kolben
DE10063568A1 (de) * 2000-12-20 2002-07-04 Mahle Gmbh Kühlkanalkolben für einen Dieselmotor mit Direkteinspritzung mit einem Kolbendurchmesser von 100 mm
WO2007068222A1 (fr) * 2005-12-17 2007-06-21 Mahle International Gmbh Piston en deux pieces pour moteur a combustion interne
JP4624373B2 (ja) * 2007-03-20 2011-02-02 三井造船株式会社 内燃機関のピストン冷却金物

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2241629A (en) * 1940-04-20 1941-05-13 Gen Motors Corp Oil cooled piston
FR1524454A (fr) * 1967-04-19 1968-05-10 Moteur Moderne Le Piston refroidi de moteur diesel
DE3518721C2 (fr) 1985-05-24 1990-10-18 Man B & W Diesel Ag, 8900 Augsburg, De
US20030154855A1 (en) * 2000-05-05 2003-08-21 Dieter Messmer Combustion engine with a built-up piston

Also Published As

Publication number Publication date
DE102012208090A1 (de) 2013-11-21
KR20150013770A (ko) 2015-02-05
FI20145895A (fi) 2014-10-14
CN104302902A (zh) 2015-01-21
KR101687090B1 (ko) 2016-12-15
FI126961B (fi) 2017-08-31
CN104302902B (zh) 2017-08-25
JP5964497B2 (ja) 2016-08-03
JP2015514182A (ja) 2015-05-18
DE102012208090B4 (de) 2022-03-24

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