EP3250804A1 - Piston destiné à un moteur à combustion interne et procédé de fabrication dudit piston destiné à un moteur à combustion interne - Google Patents

Piston destiné à un moteur à combustion interne et procédé de fabrication dudit piston destiné à un moteur à combustion interne

Info

Publication number
EP3250804A1
EP3250804A1 EP16702059.3A EP16702059A EP3250804A1 EP 3250804 A1 EP3250804 A1 EP 3250804A1 EP 16702059 A EP16702059 A EP 16702059A EP 3250804 A1 EP3250804 A1 EP 3250804A1
Authority
EP
European Patent Office
Prior art keywords
piston
rib
shaft
internal combustion
combustion engine
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.)
Withdrawn
Application number
EP16702059.3A
Other languages
German (de)
English (en)
Inventor
Michael Seiffert
Hanno Necker
Georg HOPP
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 EP3250804A1 publication Critical patent/EP3250804A1/fr
Withdrawn legal-status Critical Current

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 
    • F02F3/0076—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 
    • F02F3/02—Pistons  having means for accommodating or controlling heat expansion
    • 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
    • F16J1/10—Connection to driving members
    • F16J1/14—Connection to driving members with connecting-rods, i.e. pivotal connections
    • F16J1/16—Connection to driving members with connecting-rods, i.e. pivotal connections with gudgeon-pin; Gudgeon-pins
    • F16J1/18—Securing of gudgeon-pins
    • 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

Definitions

  • Piston for an internal combustion engine and method for producing the piston for an internal combustion engine
  • the invention relates to a piston for a
  • the mass of the piston should be relatively low, and on the other hand, the stiffness and
  • JP 2010-038048 A relates to a piston having a ring field and a shaft, which has a significantly lower height, along the piston axis, than the ring field, and in one embodiment with two, substantially parallel to the piston axis extending reinforcements to the ring field supported.
  • the invention has for its object to a piston for an internal combustion engine
  • Weight savings on the one hand and the strength on the other hand are as equally satisfied.
  • this has a ring field, a shaft, openings between the ring field and shaft, ranging from the piston outside to the piston interior, and at least one with respect to a length of a male piston substantially central rib between two
  • Piston bottom adjacent region understood in which there are one or more Kolbenringnuten.
  • the stem substantially represents the region of the piston where the piston bears against the walls of a cylinder or a piston
  • Cylinder liner is in sliding contact.
  • the sheep is formed by two separate shaft walls which are located on either side of the piston pin bosses. The connection of the shaft walls to the
  • Piston pin hubs are made by so-called connection.
  • the described breakthroughs advantageously save weight.
  • the necessary strength is provided by the central rib
  • Breakthroughs and a single rib are provided.
  • the strength has proved to be favorable, and the design of the rib can in this way be arranged simultaneously with the aim of weight saving, that it has, starting from its, in the circumferential direction, center a decreasing, measured in the radial direction of the piston thickness ,
  • Umf ngsoplasty has more than twice the width of the rib.
  • the shaft in particular the individual shaft walls, have along the piston axis at least 1.5 times the height of the ring field.
  • the rib in the direction of the piston crown less far extends as along the shaft.
  • a securing groove is provided for a locking ring for a piston pin, which is interrupted along its circumference at least at one point.
  • Breaking the same can be achieved such that the material surrounding the securing groove is partially withdrawn along the piston pin axis and in the direction of the interior of the piston, that the securing groove in these areas "disappears", and the locking ring
  • the securing groove in the upper region in its circumferential direction wider is wider
  • the interruptions of the locking groove also offer the advantage that no special lifting groove is required for the removal of the retaining ring, because a
  • Lifting tool can be set in the area of the interruption. This reduces the production costs.
  • the shank viewed from the underside of the piston, to have a convex curvature on the outside, starting from the shank walls, and a concave curvature at the transition to the piston pin bosses.
  • Shaft connection to the connecting walls can at the same time be provided with increased flexibility, and an undesirable "rail support” can be reduced, resulting overall in a modern piston architecture.
  • At least one aperture is formed by forming a groove from the outside of the piston.
  • This breakthrough can already be provided in the forged or cast piston, but it can edoch alternatively or additionally from the outside by forming the groove
  • the material thickness is chosen sufficiently thick in the region of the intended rib.
  • the rib is provided in the primary molding, for example, in casting or forging, or the piston is machined from its inside by milling in a suitable manner to form the rib.
  • the training of the rib in the context of rapid prototyping is possible.
  • FIG. 1 is a perspective bottom view of a piston according to the invention.
  • Fig. 2 is a side perspective view of a portion of the piston according to the invention.
  • the piston 10 shown in a bottom view in FIG. 1 comprises a ring field 12 and a shank 14 formed by two opposing shank walls connected by connecting walls in which the piston pin bosses are provided ,
  • the connecting walls starting from the j e election shaft wall, first, viewed from the outside, convex, and concavely curved at the transition to the piston pin bosses.
  • a central rib 18 which can be seen on the right side of the piston.
  • the breakthrough extends from the outside of the piston to its interior and can be formed, for example, by forming a groove from the outside, and the material thickness in the areas adjacent to the rib 18 is sufficiently thin so that the openings 16 described arise.
  • Breakthrough leading groove can, as e in addition to FIG. 2 to be largely perpendicular to the piston axis, and the bottom of the groove described, that is, the outside of the rib 18 and / or the areas 26 adjacent to the apertures 16th may be concavely curved when viewed from the outside. This is supplementary in Fig. 2 recognizable.
  • the rib has a greater (radial) thickness in its center viewed in the circumferential direction than at its openings 16
  • Fig. 1 is also the special embodiment of a
  • Piston pin axis are considered to have rounded sides.
  • the respective skirt wall has a width which is substantially constant along the piston axis and, moreover, preferably also along the piston axis

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

L'invention concerne un piston en acier (10) destiné à un moteur à combustion interne et présentant une zone de segmentation (12), une tige (14), des ouvertures (16) situées entre la zone de segmentation (12) et la tige (14) et allant du côté extérieur du piston jusqu'à l'intérieur du piston, et une nervure (18) sensiblement centrale par rapport à une longueur d'un axe de piston à loger et située entre deux ouvertures (16), la nervure (18) présentant une épaisseur mesurée en direction radiale qui diminue à partir de son centre, vu dans la direction périphérique. L'invention concerne également un procédé de fabrication d'un piston en acier destiné à un moteur à combustion interne et présentant une zone de segmentation et une tige. Entre la zone de segmentation et la tige sont réalisées des ouvertures qui vont du côté extérieur du piston jusqu'à l'intérieur du piston, et au moins une rainure sensiblement centrale par rapport à une longueur d'un axe de piston à loger, la rainure (18) présentant une épaisseur mesurée en direction radiale qui diminue à partir de son centre, vu dans la direction périphérique.
EP16702059.3A 2015-01-30 2016-01-26 Piston destiné à un moteur à combustion interne et procédé de fabrication dudit piston destiné à un moteur à combustion interne Withdrawn EP3250804A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015201633.1A DE102015201633A1 (de) 2015-01-30 2015-01-30 Kolben für einen Verbrennungsmotor sowie Verfahren zur Herstellung des Kolbens für einen Verbrennungsmotor
PCT/EP2016/051523 WO2016120246A1 (fr) 2015-01-30 2016-01-26 Piston destiné à un moteur à combustion interne et procédé de fabrication dudit piston destiné à un moteur à combustion interne

Publications (1)

Publication Number Publication Date
EP3250804A1 true EP3250804A1 (fr) 2017-12-06

Family

ID=55272452

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16702059.3A Withdrawn EP3250804A1 (fr) 2015-01-30 2016-01-26 Piston destiné à un moteur à combustion interne et procédé de fabrication dudit piston destiné à un moteur à combustion interne

Country Status (4)

Country Link
US (1) US10436146B2 (fr)
EP (1) EP3250804A1 (fr)
DE (1) DE102015201633A1 (fr)
WO (1) WO2016120246A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015201633A1 (de) 2015-01-30 2016-08-04 Federal-Mogul Nürnberg GmbH Kolben für einen Verbrennungsmotor sowie Verfahren zur Herstellung des Kolbens für einen Verbrennungsmotor
DE102018109205A1 (de) * 2017-04-19 2018-10-25 Ks Kolbenschmidt Gmbh Kolben in Strukturbauweise
DE102017206922B3 (de) 2017-04-25 2018-08-23 Federal-Mogul Nürnberg GmbH Verfahren zur Herstellung eines Kolbens für einen Verbrennungsmotor, Kolben, Kolbenrohling sowie Gießform
DE102017213831A1 (de) 2017-08-08 2019-02-14 Volkswagen Aktiengesellschaft Kolben für eine Hubkolbenbrennkraftmaschine sowie Hubkolbenbrennkraftmaschine

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR375308A (fr) * 1907-03-02 1907-07-05 Moteurs Gnome Système de montage indesserrable des axes de piston
GB190487A (en) * 1921-12-19 1924-03-14 Edmondo Michele Borgo Improvements relating to pistons for internal combustion engines
FR822409A (fr) 1936-09-05 1937-12-30 Perfectionnements au moulage des pistons, à ces pistons et nouveaux pistons obtenus
US2195552A (en) * 1937-07-23 1940-04-02 Alexander M Alexandrescu Heavy duty piston
FR988910A (fr) 1944-01-28 1951-09-03 Perfectionnements aux pistons pour moteurs
DE1021203B (de) * 1952-04-23 1957-12-19 Mahle Kg Lagesicherung fuer Bolzen in Brennkraftmaschinen
JPS5899555U (ja) * 1981-12-26 1983-07-06 いすゞ自動車株式会社 ピストンのピストンピン抜止用スナツプリング溝装置
DE3418454A1 (de) * 1984-05-18 1985-12-19 Kolbenschmidt AG, 7107 Neckarsulm Leichtmetallkolben
DE60041153D1 (de) 1999-12-30 2009-01-29 Federal Mogul Corp Kolben mit entkoppeltem schaftteil
DE102004013905B4 (de) 2004-03-17 2006-01-26 Adc Gmbh Glasfaser-Steckverbindung
DE102006013905A1 (de) 2006-03-25 2007-09-27 Mahle International Gmbh Kolben für einen Verbrennungsmotor
ES2361777T3 (es) * 2007-08-24 2011-06-22 ThyssenKrupp Metalúrgica Campo Limpo Ltda. Pistón para un motor de combustión interna y procedimiento para fabricar un pistón de este tipo.
JP2010038048A (ja) 2008-08-06 2010-02-18 Toyota Motor Corp 内燃機関のピストン
WO2012078401A2 (fr) * 2010-12-07 2012-06-14 Karl Ramm Élément de verrouillage à câble de piston et outil permettant d'insérer et de retirer ce dernier
JP5755057B2 (ja) 2011-07-04 2015-07-29 本田技研工業株式会社 エンジン用ピストン
DE102015201633A1 (de) 2015-01-30 2016-08-04 Federal-Mogul Nürnberg GmbH Kolben für einen Verbrennungsmotor sowie Verfahren zur Herstellung des Kolbens für einen Verbrennungsmotor

Also Published As

Publication number Publication date
DE102015201633A1 (de) 2016-08-04
US10436146B2 (en) 2019-10-08
US20180202388A1 (en) 2018-07-19
WO2016120246A1 (fr) 2016-08-04

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