Requiring one motor and one sensor, exhaust gas recirculation (EGR) valve unit integrates air intake throttle valve and EGR valve. Air intake throttle valve controls air entering engine, while EGR valve controls exhaust gas to be recirculated into engine. Combining ducts and reducing number of connectors, design promotes automotive design flexibility. Coupling between valves allows application to various engine parameters by changing shape of connection between 2 valves (cam profile).
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