flow meter. The measurement accuracy of fuel mass flow is 1 g/h,
and measurement accuracy of power is 1 kW. Smoke opacity was
measured with AVL 415S smoke meter, and the measurement accuracy
is 0.001 FSN. Power output and speed were measured with
an AVL electric dynamometer, and the measurement accuracy of
speed and torquewere 10 rpm and 5 Nmrespectively. A KISTLER
6052 pressure transducer (1% measurements accuracy), mounted
flush at the cylinder head and connected via a KISTLER 5018 charge
amplifier to WaveBook data acquisition board, was used to record
the cylinder pressure. The schematic of the experimental setup is
shown in Fig. 1.