State Of the Art Three-Level Integrated Strategy for Hybrid Automated Transmission Vehicles

Three-level integrated strategy enhances the idea of controlling three domains optimally - torque distribution between the internal combustion engine and BRM (Boost recuperation machine), gear shifts, and mode change to improve fuel benefit and drivability. The aimed new algorithm is based on incorporating a third-term power reserve into the Adaptive Equivalent fuel Consumption Minimization Strategy (ECMS) and integrating the heuristic-based technique for mode shift decision. The novel concept deals with i) Refined drivability by efficiently performing gear shifts by utilizing the novel idea power reserve term ii) selecting optimal torque distribution between BRM and ICE by considering optimal gear iii) Optimization gear decision based on prioritization, iv)Under high loading, limiting frequent gear shifts v) Mode selection based on the Heuristic approach. The proposed algorithm is verified and validated on a P3 48V AMT hybrid vehicle. The technique developed is more physics-based, resulting in the minimal revisiting of the control software and its calibrations, enabling Original Equipment Manufacturers (OEM) to use the proposed method for Hybrid and Non-hybrid vehicles considering different automated transmissions systems.