Environmental impact characteristics of diesel engine fueled by wasted oil based biodiesel blends

Experimental studies on global warming potential (GWP), photochemical ozone creation potential (POCP), acid potential (AP), health toxic potential (HTP), and air quality potential (AQP) of an common rail diesel engine fueled with wasted oil based biodiesel blends were carried out. The results shown that when the engine fueled with wasted oil based biodiesel blends, its POCP and AQP are lower than fossil diesel at all test speed and load cases, the AP is lower than that of fossil diesel at all test load cases on engine rated speed. Moreover, the GWP, AP, and HTP at engine rated speed are lower than fossil diesel when the test load was under 75%. And, the GWP, AP, and HTP at engine speed characteristic under full load are lower either than fossil diesel when the engine speed was higher than 1600 rpm.