Control valve for exhaust gas recycling apparatus

Claim 1

In apparatus for recycling exhaust gas and including two devices for converting operating parameters of an internal combustion engine into mechanical regulating movement, the improvement of a valve for controlling the quantity of exhaust gas recycled comprising a housing having an inlet and an outlet for the exhaust gas and a stationary partition disposed between the inlet and the outlet and dividing the housing into two chambers, said partition having an opening therethrough for the passage of exhaust gas; two perforated plate members, each disposed in one of said chambers between said partition and the inlet and the outlet, respectively; and two rotatable axles, each axle mounting a different one of said two perforated members such that a hole in the respective perforated member can be moved into and out of alignment with said opening in said partition thereby to open and close said opening and control a flow of exhaust gas through the valve, each of the axles being adapted for coupling to a different one of the converting devices of the recycling apparatus.