▎ 摘　　要

NOVELTY - The device has an experiment box (1) equipped with a sleeve (2). The experimental box is provided with a mounting plate (10), which is equipped with a support saddle (11). A top of the experiment box is fixed with a first motor (7). The support saddle is equipped with a second motor (12). The second motor is connected with a belt transmission device (13). An output shaft of the first motor is equipped with a gear (8). A top of the mounting plate is installed with a controller (15). Sides of the controller are equipped with a torque measuring device (14), which is connected with the belt transmission device. Ends of the experiment box are installed with a thermometer (4). USE - Graphene modified engine lubricating oil testing device. ADVANTAGE - The device is easy to observe cooling effect of lubricating oil, and can observe and compare torque at different times. DESCRIPTION OF DRAWING(S) - The drawing shows a side sectional view of a graphene modified engine lubricating oil testing device. Experiment box (1) Sleeve (2) Thermometer (4) Motors (7, 12) Gear (8) Mounting plate (10) Support saddle (11) Belt transmission device (13) Torque measuring device (14) Controller (15)