EP3615784A1 - Piston monobloc coulé destiné à un moteur à combustion interne - Google Patents

Piston monobloc coulé destiné à un moteur à combustion interne

Info

Publication number
EP3615784A1
EP3615784A1 EP18721724.5A EP18721724A EP3615784A1 EP 3615784 A1 EP3615784 A1 EP 3615784A1 EP 18721724 A EP18721724 A EP 18721724A EP 3615784 A1 EP3615784 A1 EP 3615784A1
Authority
EP
European Patent Office
Prior art keywords
piston
internal combustion
combustion engine
piece
rib
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
EP18721724.5A
Other languages
German (de)
English (en)
Other versions
EP3615784B1 (fr
Inventor
Sven Ungermann
Georg HOPP
Rainer Weiss
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.)
Federal Mogul Nuernberg GmbH
Original Assignee
Federal Mogul Nuernberg GmbH
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 Federal Mogul Nuernberg GmbH filed Critical Federal Mogul Nuernberg GmbH
Publication of EP3615784A1 publication Critical patent/EP3615784A1/fr
Application granted granted Critical
Publication of EP3615784B1 publication Critical patent/EP3615784B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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 
    • F02F3/0076—Pistons  the inside of the pistons being provided with ribs or fins
    • 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 
    • F02F3/0084—Pistons  the pistons being constructed from specific materials
    • 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
    • F02F3/18—Pistons  having cooling means the means being a liquid or solid coolant, e.g. sodium, in a closed chamber in piston
    • 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 
    • F02F3/26—Pistons  having combustion chamber in piston head
    • 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 
    • F02F2003/0007—Monolithic pistons; One piece constructions; Casting of 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

Definitions

  • the invention relates to a one-piece, cast piston for an internal combustion engine.
  • DE 101 10 889 Cl discloses a two-part piston for an internal combustion engine, one part of which is forged and the other part of which may be cast. Furthermore, a cooling channel is provided, and at the bottom of a
  • the invention has for its object to a piston for an internal combustion engine create, which is improved compared to the above piston and also meets the requirements.
  • the piston according to the invention is for a
  • Combustion engine integrally formed and cast. Further, it has at least one cooling channel and a rib, on the piston inside, opposite, or in other words, opposite to the trough bottom of a combustion bowl, in other words on the side of the piston pin bosses
  • the bottom is partially thickened, in particular, in contrast to the disclosure of the above-mentioned DE 10 2013 214 738 AI, the thickening of the floor in a cross section
  • the cooling channel extends in the direction of the piston axis in
  • the rib described in more detail below can be designed with a shape by forging can not be produced or, for example due to high wear in the forging die, not economical
  • the inventive rib formed on the underside of the piston that is, the side facing away from the combustion side of the trough base of a combustion bowl rib reinforced and stiffened for a mechanically highly loaded area
  • the at least one rib acts in terms of dissipation of the resulting heat in
  • the piston of the invention is the
  • the rib can already be brought into the final shape by casting by means of corresponding molds, so that in
  • the piston according to the invention is preferably used for a diesel engine.
  • Piston pin hub extends.
  • at least one rib extends to a left or right area of the piston pin hub, preferably two ribs in the direction of the two said areas.
  • the piston according to the invention is a
  • Iron material steel or cast iron made.
  • materials offer the possibility of realizing particularly thin wall thicknesses, and thus of saving weight in an advantageous manner.
  • the inherent in such materials, compared with other materials lower thermal conductivity is compensated according to the invention by the above-described heat dissipation effect of at least one rib.
  • the piston according to the invention can have one or more coolant inlets and outlets in a known manner, it is possible, due to the achieved heat dissipation, to dispense with a continuous exchange of coolant in the cooling duct. In other wordsdeffenzu- and -ablaufe be avoided, as well as measures for filling the cooling channel, such as coolant nozzles.
  • the cooling passage may be closed and filled with coolant, and due to the heat dissipation effect of the at least one rib, a sufficiently low temperature can still be ensured
  • the figure shows a section of the piston according to the invention perpendicular to the piston pin axis.
  • the piston 10 has in its upper region, approximately the same level in the piston axis direction, on the outside a ring field 12, radially inside a preferably closed cooling channel 14 and in the central region a combustion bowl 14.
  • Burner trough is a thickening or rib 18 on
  • Piston pin hub 16 extend.
  • the ribs 18 are each rounded at their upper side, which is the underside in the orientation shown. This applies equally to the adjacent areas of the piston underside, so that the
  • rib 18 can be formed in an advantageous manner during casting of the piston, so that no reworking is required.

Landscapes

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

Abstract

L'invention concerne un piston (10) monobloc coulé destiné à un moteur à combustion interne, le piston comprenant un conduit de refroidissement (12) et au moins une nervure (18) sur la face intérieure du piston par rapport à la base d'un bol de combustion (14).
EP18721724.5A 2017-04-26 2018-04-24 Piston monobloc coulé destiné à un moteur à combustion interne Active EP3615784B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017207005.6A DE102017207005A1 (de) 2017-04-26 2017-04-26 Einteiliger, gegossener Kolben für einen Verbrennungsmotor
PCT/EP2018/060487 WO2018197501A1 (fr) 2017-04-26 2018-04-24 Piston monobloc coulé destiné à un moteur à combustion interne

Publications (2)

Publication Number Publication Date
EP3615784A1 true EP3615784A1 (fr) 2020-03-04
EP3615784B1 EP3615784B1 (fr) 2023-05-31

Family

ID=62104249

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18721724.5A Active EP3615784B1 (fr) 2017-04-26 2018-04-24 Piston monobloc coulé destiné à un moteur à combustion interne

Country Status (5)

Country Link
US (2) US20210108592A1 (fr)
EP (1) EP3615784B1 (fr)
CN (1) CN110546368A (fr)
DE (1) DE102017207005A1 (fr)
WO (1) WO2018197501A1 (fr)

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2420474A (en) * 1943-07-19 1947-05-13 Specialloid Ltd Piston
FR2079873A5 (fr) * 1970-02-16 1971-11-12 Semt
US4428330A (en) * 1982-09-08 1984-01-31 Kabushiki Kaisha Komatsu Seisakusho Piston for internal combustion engines
JPH1018908A (ja) * 1996-07-01 1998-01-20 Hidaka Eng:Kk 内燃機関用ピストン
DE10110889C1 (de) 2001-03-07 2002-10-02 Ks Kolbenschmidt Gmbh Verfahren zur Herstellung eines Kühlkanalkolbens, sowie ein nach dem Verfahren hergestellter Kühlkanalkolben
US7406941B2 (en) * 2004-07-21 2008-08-05 Federal - Mogul World Wide, Inc. One piece cast steel monobloc piston
DE102004058968A1 (de) * 2004-12-08 2006-06-14 Mahle International Gmbh Zweiteiliger Kolben für einen Verbrennungsmotor
CN107842437B (zh) * 2011-06-29 2020-03-06 天纳克公司 具有位于冠部下方的支撑结构的活塞
US9046053B2 (en) * 2011-06-29 2015-06-02 Federal-Mogul Corporation Piston with an undercrown support feature
DE102012008690B4 (de) * 2012-04-28 2019-05-16 Mahle International Gmbh Anordnung aus einem Kolben und einem Kolbenbolzen für einen PKW-Dieselmotor
DE102013214738A1 (de) * 2013-07-29 2015-01-29 Federal-Mogul Nürnberg GmbH Leichtbau eines Dieselkolbens
US9765727B2 (en) * 2014-03-03 2017-09-19 Federal-Mogul Llc One-piece piston featuring additive machining produced combustion bowl rim and cooling gallery
DE102014210875A1 (de) * 2014-06-06 2015-12-17 Federal-Mogul Nürnberg GmbH Kolben und Verfahren zu dessen Herstellung
JP6283751B2 (ja) * 2014-12-02 2018-02-21 日立オートモティブシステムズ株式会社 内燃機関用ピストンの製造装置及び製造方法
US10584659B2 (en) * 2015-03-23 2020-03-10 Tenneco Inc Robust, lightweight, low compression height piston and method of construction thereof
WO2017203779A1 (fr) * 2016-05-27 2017-11-30 本田技研工業株式会社 Piston et son procédé de fabrication

Also Published As

Publication number Publication date
EP3615784B1 (fr) 2023-05-31
CN110546368A (zh) 2019-12-06
WO2018197501A1 (fr) 2018-11-01
DE102017207005A1 (de) 2018-10-31
US20220325676A1 (en) 2022-10-13
US20210108592A1 (en) 2021-04-15

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