Research on fuel consumption and emission of LNG bus with the different reduce emissions technology

摘要

In this paper, the fuel consumption, vehicle emission and acceleration performance of two LNG bus were tested and compared by the heavy-duty chassis dynamometer and CVS emission test system. The reducing emission technology of two LNG bus respectively are the lean-burn with oxidation catalytic aftertreatment (DOC) technology and the equivalence ratio combustion with three way catalysts (TWC) technology. The results show that the emission and acceleration performance of the LNG bus using the equivalence ratio combustion with three way catalysts (TWC) technology was better than the LNG bus using the lean-burn with oxidation catalytic aftertreatment (DOC) technology. However, the fuel consumption of the LNG bus using equivalence ratio combustion with three way catalysts (TWC) technology was higher than the LNG bus using the lean-burn with oxidation catalytic aftertreatment (DOC) technology.