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Impact of Active-Grille Shutter Position on Vehicle Air-Conditioning System Performance and Energy Consumption in Real World Conditions
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 14, 2020 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Active grille shutter (AGS) in a vehicle provides aerodynamic benefit at high vehicle speed by closing the front-end grille opening. At the same time this causes lesser air flow through the cooling module which includes the condenser. This results in higher refrigerant pressure at the compressor outlet. Higher head pressure causes the compressor to work more, thereby possibly negating the aerodynamic benefits towards vehicle power consumption. This paper uses a numerical method to quantify the compressor power consumed in different scenarios and assesses the impact of AGS closure on total vehicle energy consumption. The goal is to analyze the trade-off between the aerodynamic performance and the compressor power consumption at high vehicle speeds and mid-ambient conditions. These so called real world conditions represent highway driving at mid-ambient temperatures where the air-conditioning (AC) load is not heavy. AC system is modeled using 1D methodology and its performance simulated at system level. Net power consumed by the vehicle is computed for different scenarios using a robust comparison methodology. System model is validated against vehicle drive cell test data. Tests are conducted on a mid-size sport utility vehicle (SUV) equipped with a full face AGS. Simulations are then performed with the validated model using a Design for Six Sigma (DFSS) methodology to compute net power consumed by the vehicle by varying the blower setting, vehicle speed and ambient temperature. This paper provides guidelines regarding when to have the AGS closed or open for different noise factors considered.
CitationNatarajan, S., Mirzabeygi, P., Westra, M., and Srinivasan, K., "Impact of Active-Grille Shutter Position on Vehicle Air-Conditioning System Performance and Energy Consumption in Real World Conditions," SAE Technical Paper 2020-01-0947, 2020, https://doi.org/10.4271/2020-01-0947.
Data Sets - Support Documents
|Unnamed Dataset 1|
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- Shigarkanthi , V. , Damodaran , V. , Soundararaju , D. , and Kanniah , K. Application of Design of Experiments and Physics Based Approach in the Development of Aero Shutter Control Algorithm SAE Technical Paper 2011-01-0155 2011 https://doi.org/10.4271/2011-01-0155
- Mustafa , R. , Schulze , M. , Eilts , P. , Küçükay , F. et al. Improved Energy Management Using Engine Compartment Encapsulation and Grille Shutter Control SAE Int. J. Fuels Lubr. 5 2 803 812 2012 https://doi.org/10.4271/2012-01-1203
- Xu , B. , Leffert , M. , and Belanger , B. Fuel Economy Impact of Grille Opening and Engine Cooling Fan Power on a Mid-Size Sedan SAE Technical Paper 2013-01-0857 2013 https://doi.org/10.4271/2013-01-0857
- Cho , Y.-C. , Chang , C.-W. , Shestopalov , A. , and Tate , E. Optimization of Active Grille Shutters Operation for Improved Fuel Economy SAE Int. J. Passeng. Cars - Mech. Syst. 10 2 563 572 2017 https://doi.org/10.4271/2017-01-1513
- Vasanth , B. , Putcha , U. , Sathish Kumar , S. , Nukala , R. et al. A DFSS Approach to Optimize the Second Row Floor Duct Using Parametric Modelling SAE Technical Paper 2017-01-0176 2017 https://doi.org/10.4271/2017-01-0176
- Mirzabeygi , P. , Khawaja , A. , Govindarajalu , M. , and Joshi , S. Automotive HVAC Dual Unit System Cool-Down Optimization Using a DFSS Approach SAE Technical Paper 2019-01-0892 2019 https://doi.org/10.4271/2019-01-0892
- Fioravanti , A. and Kaminski , P.C. Design for Six sigma (DFSS): A Technical and Economic Analysis of Its Application in Vehicle Development Process SAE Technical Paper 2004-01-3308 2004 https://doi.org/10.4271/2004- 01-3308
- Natarajan , S. , S , S. , Amaral , R. , and Rahman , S. 1D Modeling of AC Refrigerant Loop and Vehicle Cabin to Simulate Soak and Cool Down SAE Technical Paper 2013-01-1502 2013 https://doi.org/10.4271/2013-01-1502
- Simcenter Amesim 17 2018
- El-Sharkawy , A. , Salahuddin , A. , and Komarisky , B. Design for Six Sigma (DFSS) for Optimization of Automotive Heat Exchanger and Underhood Air Temperature SAE Int. J. Mater. Manf. 7 2 256 261 2014 https://doi.org/10.4271/2014-01-0729