Evaluation of Hybrid Powertrains for Medium and Heavy Duty Vehicles Argonne National Laboratory

Format:

Book

Conference/Event

Author/Creator:

Nieto Prada, Daniela, author.

Contributor:

Costanzo, Vincent

Vijayagopal, Ram

Conference Name:

SAE WCX Digital Summit (2021-04-13 : Live Online, Pennsylvania, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2021

Summary:

The objective of this study includes evaluating the fuel saving potential of various hybrid powertrain architectures for medium and heavy duty vehicles. The relative benefit of each powertrain is analyzed and the observed fuel savings is explained in terms of operational efficiency gains and regenerative braking benefits from powertrain electrification. Vehicles designed for various purposes, namely urban delivery, construction, transit, refuse, drayage, regional and long haul are included in this work. Fuel consumption is measured in regulatory cycles and various real world representative cycles.Conventional diesel powered variant was first developed for each case, based on vehicle technical specifications for each type of truck. Amber, a simulation tool developed by Argonne National Laboratory, is used for carrying out the vehicle modeling, sizing and fuel economy evaluation. Performance based sizing rules implemented in Amber are briefly discussed in this paper. This sizing algorithm is used to determine the component sizes for the hybridized concept trucks. In addition to the conventional baseline, a 48V start-stop system, parallel pre-transmission system and a series plug in hybrid system are considered in this work. This study shows that not all trucks can utilize engine downsizing as part of hybridization strategy. Hybrid trucks designed for prolonged operations at maximum rated power output will require engines that are comparably sized as the conventional counterparts. Plug in hybrids can have downsized engines and still meet performance goals, as the larger battery packs can be used to assist engine for a longer period of time. Depending on the drive cycle, the observed fuel economy for the hybrid powertrains will vary. It could be comparable to that of baseline vehicle in highway driving while resulting in over 30% fuel savings in more transient drive cycles

Notes:

Vendor supplied data

Publisher Number:

2021-01-0717

Access Restriction:

Restricted for use by site license