0137282-A2 is referenced by 6 patents and cites 4 patents.

An EGR system (12) and method for controlling the amount of exhaust gas recirculation flow between an exhaust gas conduit and the intake manifold having a plurality of solenoid actuated valves (22) situated in a conduit linking the exhaust gas system and the intake manifold having associated with each of the plurality of solenoid responsive valves (22) an orifice (70) sized to permit the flow of a predetermined though different fraction of the total desired exhaust gas flow including means of activating particular solenoids in a predetermined order such that the desired composite flow through the orifices is achieved.

Electro-mechanically controlled egr valve and method.
Application Number
EP19840110311 19840830
Publication Number
0137282 (A2)
Application Date
August 30, 1984
Publication Date
April 17, 1985
Cook John Edward
Fram Canada
F16K 31/06
F02M 25/07
F02D 21/00
F02M 25/07
F02D 21/08
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