HYBRID INTAKE SYSTEM FOR SUPERATMOSPHERIC CHARGING OF ENGINE INTAKE MANIFOLD USING LOW-PRESSURE EGR/FRESH AIR BLENDING

摘要

PROBLEM TO BE SOLVED: To supply relatively cooler and cleaner recirculated exhaust gas into an intake manifold at light load/low speed engine operation, in an internal combustion engine.

SOLUTION: The intake manifold (16) of the internal combustion engine (10) is charged to superatmospheric pressure by operating a first compressor (44) to compress fresh air diluted by exhaust gas into the intake manifold while operating a second compressor (24C) to compress undiluted fresh air into the intake manifold through a device (40) that allows flow in a direction from the second compressor into the intake manifold but not in an opposite direction.

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