VHDL-AMS Full Hybrid Vehicle Simulation Model for the Concept Planning and the Power Performance and Fuel Economy Estimation results

By VHDL-AMS (IEC61691-6, IEEE1076.1) Full vehicle simulation, the fuel economy, the effect of heat energy recovery from the exhaust gas, and the power performance were discussed. The basic model performance was validated by PRIUS. The fuel economy for the LA#4 driving pattern was 22.0km/L by the simulation and on other hand measurement was 21.7km/L (error 1.4%). The energy management using an exhaust gas heat exchange system realized 10.3% fuel consumption improvement during warming up. As for the power performance, the simulated acceleration time of 0-100km/h was 11.12sec and the measured vehicle time was 11.27sec. The error between simulation and actual measurement result was 1.4%. We showed that the multi-domain full vehicle simulation is effective for the vehicle concept planning. Since the HV model uses embedded real control software, the VHDL-AMS modeling can be used as SIL at system control development stage.