Control-Oriented Modelling of a HEV with Dual-Clutch Transmission for Torque Split and Gear Shifting Optimization

An innovative parallel Hybrid Electric Vehicle (HEV) configuration can be achieved using a Hybrid Dual-Clutch Transmission (H-DCT), which integrates an Electric Motor (EM) connected to one of the DCT input shafts. This configuration allows the Internal Combustion Engine (ICE) and EM to transmit torque through different mechanical paths, optimizing their operational efficiency across various driving conditions. This study develops a control-oriented model of an HEV with H-DCT for Model In the Loop (MIL) applications, incorporating detailed physical models of the DCT components. The simulation platform includes fuel consumption models for the ICE, EM, and battery, and computes vehicle motion and tractive effort using a longitudinal vehicle dynamics model. Rule-based strategies for torque-split and gear-shifting are employed to control the HEV. Validation against data from the Argonne National Laboratory (ANL) demonstrates the model accuracy and highlights the efficiency gains achievable with the H-DCT configuration.