A Simulation Based Analysis of 12V and 48V Microhybrid Systems Across Vehicle Segments and Drive Cycles 2015-01-1151
The majority of studies in automotive electrification technology focus on the performance of high voltage HEV and EV powertrains. With the introduction of microhybrid systems as a near term technology trend, this work focuses on an analysis of low voltage (<60V) systems across multiple vehicle segments and region-specific regulatory drive cycles. Vehicle simulation results are presented for 12V and 48V vehicle systems equipped with start-stop and regenerative braking, features commonly associated with microhybrid vehicles. Simulation results show that fuel economy benefits from start-stop vary significantly between drive cycles. In contrast, total energy recuperation is similar across all vehicle classes for 12V microhybrid systems. For 48V systems, total recuperated energy increases with vehicle mass while the percent fuel economy benefit is highest for lighter vehicles. The results suggest that a single 12V electrification system may be implemented for a range of segments and that technology adaptation trends will be influenced by region specific regulatory drive cycles.
Citation: Rick, A. and Sisk, B., "A Simulation Based Analysis of 12V and 48V Microhybrid Systems Across Vehicle Segments and Drive Cycles," SAE Technical Paper 2015-01-1151, 2015, https://doi.org/10.4271/2015-01-1151. Download Citation
Author(s):
Anthony Rick, Brian Sisk
Affiliated:
Johnson Controls Power Solutions
Pages: 6
Event:
SAE 2015 World Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Fuel economy
Regenerative braking
Simulators
High voltage systems
Stop / start technology
Powertrains
Simulation and modeling
Hybrid electric vehicles
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