Coordinated predictive cruise and coasting control for energy saving in heavy-duty trucks

High fuel consumption in heavy-duty trucks contributes significantly to operating costs and carbon dioxide (CO 2 ) emissions. While predictive cruise control (PCC) is an effective technology for optimizing vehicle speed, its energy-saving potential can be further enhanced. This paper proposes a fused control strategy that synergizes the PCC system with an intelligent, multi-mode coasting function. The algorithm leverages the PCC-generated speed trajectory to make optimal decisions between in-gear and neutral coasting, thereby maximizing the use of vehicle inertia. Simulations, benchmarked against a conventional PCC system, demonstrate that the proposed strategy achieves an additional energy saving of up to 5.73%, with a corresponding reduction in CO 2 emissions.