TY - SER AU - Lewis, andrew D. AU - Akehurst, S. AU - Turner, James AU - Patel, R. TI - Observations onMeasurement and Performance Impact of Catalyzed Vs. Non Catalyzed Egr on a Heavily Downsized Disi Engine KW - Egr KW - Disi Engines KW - Impact of Catalyzed ER -