EP 2454464 A1 20120523 - MULTI-PART PISTON FOR AN INTERNAL COMBUSTION ENGINE AND METHOD FOR THE PRODUCTION THEREOF
Title (en)
MULTI-PART PISTON FOR AN INTERNAL COMBUSTION ENGINE AND METHOD FOR THE PRODUCTION THEREOF
Title (de)
MEHRTEILIGER KOLBEN FÜR EINEN VERBRENNUNGSMOTOR UND VERFAHREN ZU SEINER HERSTELLUNG
Title (fr)
PISTON EN PLUSIEURS PARTIES POUR UN MOTEUR À COMBUSTION INTERNE ET PROCÉDÉ DE FABRICATION
Publication
Application
Priority
- DE 2010000753 W 20100629
- DE 102009032941 A 20090714
Abstract (en)
[origin: WO2011006469A1] The present invention relates to a method for producing a multi-part piston (10, 110) for an internal combustion engine, comprising the following method steps: producing an upper piston part (11) and a lower piston part (12), each having an inner support element (22, 26; 122, 126) having joining surfaces (24, 28; 124, 128) and an outer support element (23, 27; 123, 127) having joining surfaces (25, 29; 125, 129), applying a high-temperature solder material in the area of at least one joining surface (24, 28 or 25, 29; 124, 128 or 125, 129), assembling the upper piston part (11) and the lower piston part (12) to form a piston body by establishing a contact between the joining surfaces (24, 28 or 25, 29; 124, 128 or 125, 129), placing the piston body in a vacuum furnace and evacuating the vacuum furnace; heating the piston body at a pressure of at most 10-2 mbar to a soldering temperature of at most 1300°C; cooling the soldered piston (10, 110) at a pressure of at most 10-2 mbar until the high-temperature solder material is completely solidified. The present invention further relates to a piston (10, 110) that can be produced by means of said method.
IPC 8 full level
CPC (source: EP KR US)
B23K 1/00 (2013.01 - KR); F02B 23/0672 (2013.01 - EP KR US); F02B 23/0693 (2013.01 - EP US); F02F 3/00 (2013.01 - KR); F02F 3/003 (2013.01 - EP KR US); Y02T 10/12 (2013.01 - EP US); Y10T 29/49252 (2015.01 - EP US); Y10T 29/49256 (2015.01 - EP US); Y10T 29/49263 (2015.01 - EP US)
Citation (search report)
See references of WO 2011006469A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
DE 102009032941 A1 20110120; CN 102483009 A 20120530; CN 102483009 B 20150422; EP 2454464 A1 20120523; JP 2012533020 A 20121220; KR 101649010 B1 20160830; KR 20120049882 A 20120517; US 2012192828 A1 20120802; US 8991046 B2 20150331; WO 2011006469 A1 20110120
DOCDB simple family (application)
DE 102009032941 A 20090714; CN 201080038350 A 20100629; DE 2010000753 W 20100629; EP 10742706 A 20100629; JP 2012519881 A 20100629; KR 20127003624 A 20100629; US 201013383682 A 20100629