Modeling Transient Control of a Turbogenerator on a Drive Cycle

<div class="section abstract"><div class="htmlview paragraph">GTDI engines are becoming more efficient, whether individually or part of a HEV (Hybrid Electric Vehicle) powertrain. For the latter, this efficiency manifests itself as increase in zero emissions vehicle mileage. An ideal device for energy recovery is turbogenerator (TG), and, when placed downstream conventional turbine, it has minimal impact on catalyst light-off and can be used bolt-on aftermarket device. A Ricardo WAVE model representative GTDI engine was adapted to include TG (Turbogenerator) TBV (Turbine Bypass Valve) with mechanical turbocompounding configuration, calibrated using steady state mapping data. This integrated into co-simulation environment SISO (Single-Input, Single-Output) dynamic controller developed SIMULINK actuator control (with BMEP, manifold air pressure ratio controlled variables). Transient verification WAVE-RT conducted WLTP NEDC drive cycles, estimating fuel consumption improvement. Hints given advanced MIMO (Multiple-Input, Multiple-Output) system architecture calibration.</div></div>