EP 1136688 A2 20010926 - Exhaust gas re-circulation device for an internal combustion engine
Title (en)
Exhaust gas re-circulation device for an internal combustion engine
Title (de)
Abgasrückführvorrichtung für eine Brennkraftmaschine
Title (fr)
Dispositif de recirculation de gaz d'échappement pour un moteur à combustion interne
Publication
Application
Priority
LU 90551 A 20000322
Abstract (en)
An exhaust gas re-circulation device for an internal combustion engine comprises an intake air channel (2), an intake air control valve (18), an exhaust gas re-circulation valve (12) and an actuator (22), a first motion transmission mechanism between the actuator (22) and the exhaust gas re-circulation valve (12) and a second motion transmission mechanism between the actuator (22) and the intake air control valve (18). A first uncoupling means (26) is included in the first motion transmission mechanism and a first pull-back spring (34) biases the exhaust gas re-circulation valve (12) in a closed position. The device enables to control exhaust gas re-circulation rates by simultaneously driving the two valves in opposite senses and to obtain a smooth engine shut-off, by simultaneously closing the two valves. In a preferred embodiment, with a second uncoupling means (50) in the second motion transmission mechanism and a second pull-back spring (52) biasing the intake air control valve (18) in an open position, low exhaust gas re-circulation rates can be controlled with the intake air control valve (18) fully open. <IMAGE>
IPC 1-7
IPC 8 full level
F02M 25/07 (2006.01); F02D 9/02 (2006.01)
CPC (source: EP)
F02M 26/21 (2016.02); F02M 26/54 (2016.02); F02M 26/60 (2016.02); F02M 26/63 (2016.02); F02M 26/64 (2016.02); F02M 26/67 (2016.02); F02D 2009/0276 (2013.01); F02M 26/51 (2016.02)
Citation (applicant)
EP 0900930 A2 19990310 - GEN MOTORS CORP [US]
Designated contracting state (EPC)
DE FR IT
DOCDB simple family (publication)
EP 1136688 A2 20010926; EP 1136688 A3 20020612; EP 1136688 B1 20030917; DE 60100768 D1 20031023; DE 60100768 T2 20040805
DOCDB simple family (application)
EP 01104948 A 20010228; DE 60100768 T 20010228