EP 0106760 B1 19870715 - EGR CONTROL DEVICE FOR INTERNAL-COMBUSTION ENGINES
Title (en)
EGR CONTROL DEVICE FOR INTERNAL-COMBUSTION ENGINES
Publication
Application
Priority
FR 8216958 A 19821011
Abstract (en)
[origin: ES8405888A1] A device is disclosed for controlling the recirculation of exhaust gas for an internal combustion engine 1 in which an air-fuel mixture intake pipe 2 and an exhaust pipe 3 are connected with each other by a recirculation circuit having a main valve 4 and connecting pipes 5 and 6. This valve 4 is controlled by the partial vacuum prevailing at the venturi V of the intake pipe 2 by a solenoid valve 14. According to the invention, this control device includes a control system 13 having an additive type pneumatic amplifier 17 that generates a partial vacuum signal for the control of this main valve 4 whose strength is greater than the value of partial vacuum at the nozzle 16 of the venturi throat V, with a constant value in a range of extended operation. Application is particularly to internal combustion engines equipped with a system for recirculation of exhaust gas.
IPC 1-7
IPC 8 full level
F02M 25/07 (2006.01)
CPC (source: EP US)
F02M 26/57 (2016.02 - EP US)
Designated contracting state (EPC)
DE GB IT SE
DOCDB simple family (publication)
EP 0106760 A1 19840425; EP 0106760 B1 19870715; DE 3372522 D1 19870820; ES 526355 A0 19840616; ES 8405888 A1 19840616; FR 2534315 A1 19840413; FR 2534315 B1 19850104; US 4479478 A 19841030
DOCDB simple family (application)
EP 83401978 A 19831011; DE 3372522 T 19831011; ES 526355 A 19831010; FR 8216958 A 19821011; US 54084083 A 19831011