EP 0348451 B1 19920122 - HOT-GAS PIPE FOR AN INTERNAL COMBUSTION ENGINE
Title (en)
HOT-GAS PIPE FOR AN INTERNAL COMBUSTION ENGINE
Publication
Application
Priority
DE 3743851 A 19871223
Abstract (en)
[origin: WO8905911A1] A thin-walled pipe (11) is fastened inside the liquid-cooled envelope (13) by screws (16) distributed around the circumference of the pipe (11) in a cross-sectional plane. The screws (16) are lodged in carriers (17) arranged in the wall of the pipe (11) which have an internal screw-thread that mates with the screws (16). In the mounted position, a radial undersize is present in the region of each carrier (17) between the pipe (11) and the envelope (13), which is compensated when the screws (16) are tightened. For this purpose, the pipe (11) is distorted in the cross sectional plane of the screws (16) in the sections between the carriers (17). The size of the distortion is of the order of the thermal expansion of the pipe (11) to be expected at the operating temperature. This prevents constraining forces due to restricted thermal expansion from arising in the hot-pipe (11) during operation.
IPC 1-7
IPC 8 full level
F01N 13/08 (2010.01); F01N 13/10 (2010.01); F01N 13/14 (2010.01); F02F 1/42 (2006.01); F02F 1/24 (2006.01)
CPC (source: EP KR US)
F01N 13/14 (2013.01 - EP US); F02F 1/42 (2013.01 - KR); F02F 1/4271 (2013.01 - EP US); F02F 2001/247 (2013.01 - EP US); F02F 2001/4278 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB IT LI
DOCDB simple family (publication)
DE 3743851 C1 19890503; CN 1009124 B 19900808; CN 1034606 A 19890809; DE 3868059 D1 19920305; EP 0348451 A1 19900103; EP 0348451 B1 19920122; JP H02502470 A 19900809; JP H0411726 B2 19920302; KR 900700748 A 19900816; KR 930011562 B1 19931211; SU 1766274 A3 19920930; US 5022227 A 19910611; WO 8905911 A1 19890629
DOCDB simple family (application)
DE 3743851 A 19871223; CN 88108762 A 19881223; DE 3868059 T 19881109; DE 8800697 W 19881109; EP 88909511 A 19881109; JP 50878488 A 19881109; KR 890701591 A 19890823; SU 4614201 A 19890607; US 42340989 A 19890822