Internal-combustion engines – Charge forming device – Exhaust gas used with the combustible mixture
Reexamination Certificate
2007-04-10
2007-04-10
Cronin, Stephen K. (Department: 3747)
Internal-combustion engines
Charge forming device
Exhaust gas used with the combustible mixture
Reexamination Certificate
active
10387439
ABSTRACT:
A exhaust gas recirculation assembly for an engine having an intake manifold and an exhaust manifold, the exhaust gas recirculation assembly including a flow control body, a closing member, an electric motor coupled to the closing member, and an electronic controller electrically connected to the electric motor. The flow control body includes a manifold conduit and an inlet conduit in fluid communication with the manifold conduit. The manifold conduit includes a recirculation opening and a mounting member. The mounting member is adapted to connect the manifold conduit in fluid communicate with the intake manifold. The inlet conduit includes a mounting member adapted to connect the inlet conduit in fluid communication with the exhaust manifold. The closing member is movably mounted in the manifold conduit and has a first position where the closing member closes the recirculation opening and blocks fluid communication between the inlet conduit and the manifold conduit and a second position where the closing member opens the recirculation opening and permits fluid communication between the inlet conduit and the manifold conduit and creates a pressure differential across the recirculation opening to mix fluid flowing from the inlet conduit with fluid flowing in the manifold conduit. The electronic controller selectively controls the operation of the electric motor to drive the closing member between the first position and the second position such that the fluid from the inlet conduit is mixed with the fluid flowing in the manifold conduit in a sufficient amount for combustion in the engine.
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Castro Arnold
Siemens Canada Limited
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