System Level Modeling and Optimization of Fuel Cell Powered Auxiliary Power Unit (APU) to be used in Commercial Vehicles 2015-26-0116
Engines of commercial vehicles deliver significant amount of power (more than 25% of propulsive power) for non-propulsive loads such as air-conditioner, alternator, air compressor, radiator fan, steering oil pump, lights etc. Use of these auxiliaries cause sub-optimal utilization of engine power resulting in increased fuel consumption and emissions. A fuel cell powered auxiliary power unit (FC-APU) is proposed to isolate the auxiliaries from the engine. Use of FC-APU shall help improve load carrying capacity, gradeability, fuel efficiency and emissions of the vehicle. This paper describes a mathematical system level model developed using MATLAB-SIMULINK to estimate auxiliary power consumption and simulate FC-APU system. A statistical analysis is performed on the power consumed by various auxiliaries during different duty cycles. The data is used to propose a FC- APU system. Fuel cell is the most expensive component in the system. Cost of the fuel cell increases with increase in power rating. Hence, objective of the system simulation is to propose a FC-APU system featuring fuel cell with lowest possible power rating.
Citation: Kshirsagar, C., "System Level Modeling and Optimization of Fuel Cell Powered Auxiliary Power Unit (APU) to be used in Commercial Vehicles," SAE Technical Paper 2015-26-0116, 2015, https://doi.org/10.4271/2015-26-0116. Download Citation
Author(s):
Chinmay Kshirsagar
Affiliated:
Ashok Leyland Technical Center
Pages: 8
Event:
Symposium on International Automotive Technology 2015
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Fuel cells
Fuel consumption
Fuel economy
Energy conservation
Energy consumption
Commercial vehicles
Statistical analysis
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