INTEGRATED POWERTRAIN CONTROL TO MEET LOW CO_2 EMISSIONS FOR A HYBRID DISTRIBUTION TRUCK WITH SCR-DENOX SYSTEM

摘要

This article presents a cost-based optimization strategy that explicitly deals with the requirements for fuel consumption and emissions. Based on the Integrated Powertrain Control (IPC) ap proach, the overall powertrain performance is optimized by in tegrated energy and emission management. The potential of this strategy is demonstrated for a parallel hybrid diesel truck with a Selective Catalytic Reduction (SCR) de-NO_x system. New results are presented for a challenging city cycle; although the average power demand is low, IPC is able to keep the SCR catalyst tem perature relatively high. With this IPC approach, the CO_2-NO_x trade-off is optimized in a systematic way. It is demonstrated that CO_2 emissions and related operating costs are reduced by 3.5% or 24.9% NO_x emission reduction is achieved, depending on the applied IPC calibration.