Abstract
In 2020, Korean government introduced a CO2 monitoring regulation that heavy-duty vehicle (HDV) manufactures are required to submit CO2 calculation data using Heavy-duty vehicle Emission Simulator (HES). Based on HES program, the mandatory CO2 regulation for HDVs is expected to be implemented from 2026. This study addresses the development of HES program, which is a vehicle dynamics-based vehicle system model that estimates fuel consumption and CO2 emissions of HDVs. The CO2 prediction accuracy of HES was rigorously validated with 19 experimental data, and the average CO2 emission error between the experimental values and HES results was 4.6%. For comparative analysis between HES and European HDV simulation program VECTO, 21 simulations were performed using the same input data for both programs, and the average CO2 emission error is 1.59%. Using the HES program, we calculated CO2 emissions from HDVs from 2015 to 2020 in Korea.
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