Exhaust gases emission tests of tractor engine fueled by diesel and biofuels.

Summary This paper presents the methodology and results of comparative tests of tractor engine emission powere d by diesel and two types of biofuels: rapeseed oil methyl esters and c amelina oil methyl esters. Measurements of the CO 2 emissions, toxic exhaust gas components (CO, HC, NO x) and mass, quantity, size of particulate matter (P M) are also included.