EP 2746561 A1 20140625 - Conduit for a heat exchanger of an internal combustion engine EGR system
Title (en)
Conduit for a heat exchanger of an internal combustion engine EGR system
Title (de)
Leitung für einen Wärmetauscher eines Abgasrückführungssystems eines Verbrennungsmotors
Title (fr)
Conduit destiné à un échangeur de chaleur d'un système EGR de moteur à combustion interne
Publication
Application
Priority
EP 12382528 A 20121224
Abstract (en)
The present invention relates to a conduit for a heat exchanger of an internal combustion engine EGR (Exhaust Gas Recirculation) system. This conduit is particularly designed to withstand thermal fatigue due to stresses generated by expansion, primarily of the inner elements of the conduit intended for improving heat transfer, due to being embedded in resistant elements for fixing the ends of said conduits. The invention uses resistant elements with a through hole allowing the passage of the cooling fluid therethrough to prevent these resistant elements from being subjected to an expansion such as that shown by the elements which are arranged inside the conduit. In addition to reducing thermal fatigue, this conduit allows solving problems associated with bubble formation at points where the boiling temperature is reached and particularly problems associated with essentially planar and horizontally arranged conduit configurations. In such configurations, the existence of through holes facilitates the passage of the bubbles that may be formed, preventing such bubbles from being lodged at one point which also facilitates thermal fatigue. Another object of this invention is the heat exchanger built using conduits with a through hole.
IPC 8 full level
F02M 25/07 (2006.01); F28D 7/00 (2006.01); F28D 7/16 (2006.01)
CPC (source: EP)
F02M 26/32 (2016.02); F28D 7/0058 (2013.01); F28D 7/1607 (2013.01); F28D 7/1684 (2013.01); F28D 21/0003 (2013.01); F28D 7/1615 (2013.01); F28F 2250/04 (2013.01); F28F 2265/00 (2013.01); F28F 2265/26 (2013.01)
Citation (search report)
- [XYI] JP 2005331217 A 20051202 - USUI KOKUSAI SANGYO KK
- [XI] WO 02097354 A1 20021205 - ANGLIA POLYTECHNIC UNIVERSITY [GB], et al
- [YA] JP H0579791 A 19930330 - CALSONIC CORP
- [A] US 2009020106 A1 20090122 - IIJIMA TADASHI [JP], et al
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 RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 12382528 A 20121224; EP 2013077877 W 20131223