Patent ID: 6085722
Filing Date: 2000-07-11
Classification: F02D

Abstract:
An apparatus for restricting flow of exhaust in an exhaust tract of a machine having an internal combustion engine, comprising:a conduit having an inlet, an outlet, and an interior between said inlet and said outlet;a closure member;an operating shaft connected to said closure member, said operating shaft supporting said closure member and pivotally mounted relative to said conduit within said interior, said closure member being pivotal about an operating shaft pivot axis between a first position wherein fluid flow communication between said inlet and said outlet is substantially unblocked by said closure member and a second position wherein fluid flow communication between said inlet and said outlet is substantially blocked by said closure member;an actuator assembly operatively connected to said closure member, said actuator assembly moving said closure member between said first position and said second position;a machine speed sensor, said machine speed sensor producing a signal indicative of machine speed;a throttle position sensor, said throttle position sensor producing a signal indicative of throttle position;a manually operable switch moveable between an enable state and a disable state, said manually operable switch producing a command signal indicative of the state of the manually operable switch; andan electronic controller connected to said machine speed sensor, said throttle position sensor, said manually operable switch, and said actuator, said electronic controller receiving said machine speed signal, said throttle position signal, and said command signal and responsively producing an actuator control signal.