| 摘要 |
An exhaust gas recirculation system for an internal combustion engine includes an exhaust gas recirculation valve adapted for coupling to an intake manifold and adapted for connection to an secondary exhaust outlet. The exhaust gas recirculation valve is controllably positioned in one of a first position and a second position, wherein when the exhaust gas recirculation valve is in the first position the exhaust gas from each cylinder is transported through the primary exhaust outlet, and when the exhaust gas recirculation valve is in the second position an exhaust gas flow from at least one of the plurality of combustion cylinders is transported through the secondary exhaust outlet. An actuator is placed in communication with the exhaust gas recirculation valve for effecting a position change thereof. A controller is coupled to the actuator to control a timing of movement of the exhaust gas recirculation valve between the first position and the second position based on at least one cyclical engine operation characteristic of the internal combustion engine.
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