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Simulation of Cooling System and Thermal Management in Hybrid Electric Vehicles

Ahmadi, Naghi | 2019

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 53170 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical Engineering
  6. Advisor(s): Saeedi, Mohammad Hassan; Hakaki Fard, Ali
  7. Abstract:
  8. Nowadays, according to environmental issues and fuel economy in internal combustion engines, the tendency to use of electrical and hybrid-electrical propulsions has become more than the past. On the other hand, still there are some problems like distance and charge time in electrical propulsions. Among them there are Hybrid-electric propulsions that have the benefits of two other propulsions. These propulsions are classified into three categories: series, parallel and series-parallel.Propulsion hybridization will change the cooling system. Internal combustion engine, electric motors, inverter and batteries operate at different temperature levels. So more than one cooling circuit with its own temperature level and coolant flow rate is required to dissipate heat from these components. In this study, using KULI software, a model for integrated simulation of the cooling system and vehicle in series-parallel hybrid electric vehicle is presented to investigate the thermal behavior of important components in vehicle performance and ensure their function at optimal temperature. At first a series-parallel hybrid electric vehicle based on TIBA has developed. Then components of cooling system including internal combustion engine, electric propulsions and batteries cooling circuit one by one have modeled and validated. At the end, these two models are combined together and in three cycles including NEDC, HWFET and grade load, the thermal behavior of the vehicle has been investigated and the proper operation of the designed system is verified
  9. Keywords:
  10. Cooling System ; Tiba Vehicle ; Hybrid Electric Vehicle (HEV) ; Series-Parallel System ; Electric Propulsion ; Internal Combustion Engines

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