Modeling Transient Control of a Turbogenerator on a Drive Cycle 2022-01-0415
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 a turbogenerator (TG), and, when placed downstream the conventional turbine, it has minimal impact on catalyst light-off and can be used as a bolt-on aftermarket device. A Ricardo WAVE model of a representative GTDI engine was adapted to include a TG (Turbogenerator) and TBV (Turbine Bypass Valve) with the TG in a mechanical turbocompounding configuration, calibrated using steady state mapping data. This was integrated into a co-simulation environment with a SISO (Single-Input, Single-Output) dynamic controller developed in SIMULINK for the actuator control (with BMEP, manifold air pressure and TG pressure ratio as the controlled variables). Transient verification with WAVE-RT was conducted on WLTP and NEDC drive cycles, estimating dynamic energy recovery and fuel consumption improvement. Hints are given for a more advanced MIMO (Multiple-Input, Multiple-Output) control system architecture and calibration.
Citation: Petrovich, S., Ebrahimi, K., Mason, B., and Watson, A., "Modeling Transient Control of a Turbogenerator on a Drive Cycle," SAE Int. J. Adv. & Curr. Prac. in Mobility 4(6):2405-2411, 2022, https://doi.org/10.4271/2022-01-0415. Download Citation
Author(s):
Simon Petrovich, Kambiz Ebrahimi, Byron Mason, Andrew Watson
Affiliated:
Loughborough University
Event:
WCX SAE World Congress Experience
e-ISSN:
2641-9645
Also in:
SAE International Journal of Advances and Current Practices in Mobility-V131-99EJ
Related Topics:
Low emission vehicles (LEV) and zero emission vehicles (ZEV)
Hybrid electric vehicles
Pressure
Fuel consumption
Architecture
Control systems
Compound engines
Engines
Simulation and modeling
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