Technical Paper
Predicting and Minimizing Virtual Vehicle Cold Start Driveline Model with a Real-Time 1-D Gas Engine Code and Chemical Kinetics Aftertreatment
2018-04-03
2018-01-1425
The upcoming World-harmonized Light-duty Vehicles Test Cycle (WLTC) together with the Real Driving Emissions (RDE) legislation used for the assessment of fuel economy and emissions, demand a start from a cold engine state. The process of warming up the engine from a cold start has a significant contribution to the emissions and fuel economy of the entire drive cycle. The process involves a multitude of interdependent components which means that modelling the phenomena has so far only been achieved using highly simplified approaches or accepting a very large penalty on calculation time. This paper presents a modelling of the real-time running virtual vehicle whose parts are built in different domains connected with the Functional Mock-up Interface (FMI) co-simulation standard. A real- time 1-D gas thermodynamics code ‘WAVE-RT’ is used as a virtual gasoline engine providing detailed information about any chosen parameters at every engine crank angle.
