Table 3: Performance parameters of HCCI mode simulation results with varying EGR condition and comparison with CI mode experimental values (Operating condition: 1400 rpm; 25% load; compression ratio:17.5; fuel quantity: 38.5 mg/stroke).

Mode HCCI HCCI HCCI HCCI CI
EGR rate 0% 20% 40% 60% 20%

Power (kW)19.423.4427.629.424.6
Peak firing pressure (bar)124.7123.8126.1117.465.6
Peak pressure rise (bar/deg)37.233.723.89.23.2
Combustion noise (dBA)98.999.096.791.583.8
Specific fuel consumption (g/kW-h)332.7275.5233.6219.2242.1