TIRE DRIVING TRANSMISSION EFFICIENCY MEASURING DEVICE, TIRE DRIVING TRANSMISSION EFFICIENCY MEASURING METHOD, AND PREDICTIVE FUEL COST CALCULATING METHOD

摘要

A tire driving transmission efficiency measuring device comprises a tire motor (5) for increasing and decreasing a tire rotational frequency (Nt) while rotating a tire (3) about a tire rotating shaft (1), a rotational frequency measuring means (6) for measuring the tire rotational frequency (Nt), a drum motor (11) for rotating a traveling drum (12) about a drum rotating shaft (14) at a constant drum speed (Vd), a speed meter (15) for measuring the drum speed (Vd), a load applying means (4) for pressing the tire (3) against the traveling drum (12) by a tire load (Fz), a load load cell (2) for measuring the tire load (Fz), an anteroposterior force load cell (2) for measuring an anteroposterior force (Fx) exerted on the tire (3), and a recording means for recording measurement results of the drum speed (Vd), the tire rotational frequency (Nt), the anteroposterior force (Fx), and the tire load (Fz) in association with time points within a period of time when the measured tire rotational frequency (Nt) is increased and decreased.