An Open Access Journal
Table 2 Vehicle and propulsion systems parameters of conventional and hybrid DMU
From: Reducing DMU fuel consumption by means of hybrid energy storage
conventional DMU | hybrid DMU | |
|---|---|---|
Vehicle parameters | ||
Davis coefficient A | 1850 N | |
Davis coefficient B | 70 N/(m/s) | |
Davis coefficient C | 5 N/(m/s)² | |
Total mass | 100 t | 102 t |
Max. acceleration/avg. deceleration | 1.0 m/s²/0.6 m/s² | |
Max. velocity | 140 km/h | |
Engine parameters | ||
Rated power/rated torque | 560 kW (2000 rpm)/3200 Nm (1200 rpm) | |
Fuel consumption (best point) | 195 g/kWh | |
Transmission parameters | ||
Gear ratio range/axle gear ratio | 3.36–0.62/2.59 | |
Electric drive parameters | ||
Generator power elec./max. torque | 60 kW/770 Nm | 200 kW/2000 Nm |
Motor power elec./max. torque | – | 90 kW/1200 Nm |
Fixed efficiency | 90% | 90% |