Life Cycle Assessment of a Diesel Engine Based on an Integrated Hybrid Inventory Analysis Model

This paper conducts a Life Cycle Assessment (LCA) to evaluate the energy consumptions and environmental emissions of an engine with Integrated Hybrid Life Cycle Inventory (IH-LCI) analysis method. Aggregated Input–Output matrix Aint is established by the methods of site investigation, data collection, and input-output analysis. Furthermore, the paper compares the results of this study with the one achieved by the process based inventory analysis method to show the sources of the differences between the two methods. Data quality of both the methods is checked by uncertainty analysis. The result can be used for exploring the optimal boundary division by LCA practitioners when applying the IH-LCI for more convenient and accurate decision making in future.