Internal-combustion engines – Charge forming device – Exhaust gas used with the combustible mixture
Reexamination Certificate
2005-06-21
2005-06-21
Wolfe, Jr., Willis R. (Department: 3747)
Internal-combustion engines
Charge forming device
Exhaust gas used with the combustible mixture
C123S568240
Reexamination Certificate
active
06907868
ABSTRACT:
A modular exhaust gas recirculation assembly includes a flow control body, a closing member movably mounted in the manifold conduit between a first position and a second position, and an actuator assembly coupled to the closing member and driving the closing member between the first position and the second position. The flow control body includes a manifold conduit and an inlet conduit in fluid communication with the manifold conduit. The manifold conduit includes manifold conduit a recirculation opening, a first open end having a first cross-sectional shape, and a second open end having a second cross-sectional shape. The closing member includes a boundary defining an operative surface. The boundary has a configuration that is different from the first cross-sectional shape and the second cross-sectional shape. When in the first position, the closing member closes the recirculation opening and blocks fluid communication between the inlet conduit and the manifold conduit. When in the second position, the closing member opens the recirculation opening and permits fluid communication between the inlet conduit and the manifold conduit such that the operative surface creates a pressure differential across the recirculation opening so that fluid is drawn from the inlet conduit into the manifold conduit.
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Siemens VDO Automotive Inc.
Wolfe, Jr. Willis R.
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