Improvement of Mobile Crusher Energy Efficiency Through Hybridization and Electrification

Abstract

The energy efficiency of non-road mobile machines (NRMM) requires significant enhancement to mitigate harmful emissions. Mobile crushers, akin to numerous other NRMMs, encounter a challenge due to the absence of standardized load cycles, impeding efficiency assessments and system-level developments. This paper addresses the issue by utilizing measured load cycles, establishing a foundation for comprehending mobile crusher power requirements. This understanding forms the basis for augmenting efficiency and performance of the selected machine. To achieve these improvements, this paper proposes and studies the applicability of a hybrid powertrain to the selected machine. In this work, a simulation model of a series-hybrid powertrain for a mobile crushing machine is developed, and its efficiency is compared to that of a conventional diesel-electric powertrain using the measured load cycles. The simulation results demonstrate that the hybrid powertrain enhances the mobile crusher’s efficiency, concurrently improving crushing performance by increasing available peak power.