Emissions characteristics of diesel car fueled with biodiesel blends

The emissions characteristics of a diesel car fueled by biodiesel volume ratio of 10% (called BD10), which is the mixture of conventional diesel and waste oil based biodiesel, was carried out. And the emission characteristics of HC, CO, NO_x and CO₂ in different driving mode and different driving cycle in accordance with the "I" type test cycle of Chinese vehicle emission standard GB18352.3-2005 was analyzed. The results shown that compared with the idling, constant speed, and deceleration driving modes, the accelerated driving mode\´s HC, CO, NO_X emissions of BD10 fueled diesel car is relatively high. The HC and CO emissions of the first urban operation cycle, and the CO₂ and NO_x emissions of suburban operation cycle are higher than others operation cycles of the "I" type test cycle of GB18352.3-2005. Compared with conventional diesel, the HC, CO, NO_x, CO₂ emissions of BD10 fueled diesel car are reduced by 6%, 1%, 10% and 2% respectively.