PT Journal AU Merkel, S Eckert, P Wagner, U Velji, A Spicher, U TI Investigation of a New Injection Strategy for Simultaneous Soot and NOx Reduction in a Diesel Engine with Direct Injection SO SAE International journal of fuels and lubricants PY 2008 BP 1433 EP 1442 VL 1 IS 1 DI 10.4271/2008-01-1790 LA english ER