Browse Publications Technical Papers 2018-01-0965
2018-04-03

Turbocharger Impact on Diesel Electric Powertrain Performance 2018-01-0965

When electrifying the powertrain, there arises an opportunity to revise the traditional turbocharging trade-off between fuel-economy and transient performance. With the help of electrification, it might be possible to make the trade-off in favor of fuel economy, since transient response can be improved by the electric machine. The paper investigates this trade-off by looking at three turbocharger selections. A conventionally dimensioned turbocharger, an efficiency optimized turbocharger with maintained flow capacity, and an efficiency optimized turbocharger with increased flow capacity. The concepts are evaluated on the following cases: stationary operation, engine tip-in performance, vehicle acceleration performance, and on road fuel economy performance. The investigation is based on a validated mean value engine model of a six cylinder inline CI engine, and on a validated driveline and vehicle model of a heavy-duty truck. The evaluations are made with the help of simulations and numerical optimal control. The results show that there is a fuel saving potential, and that the transient response is improved by the electric machine.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Drivecycle Benefits of Controlling Airflow with the SuperTurbo™

2018-01-0970

View Details

TECHNICAL PAPER

Comparative Evaluation of Turbochargers for High Horsepower Diesel-Electric Locomotives

2013-01-0930

View Details

JOURNAL ARTICLE

Turbocharger Dynamics Influence on Optimal Control of Diesel Engine Powered Systems

2014-01-0290

View Details

X