TORQUE MEASUREMENT WITHIN A POWERTRAIN

摘要

A method is provided for measuring torque in a shaft of a drive line including a disc coupling component such as a flexplate (1) or a flanged coupling (13), as well as a drive coupling system for carrying out the method. The disc coupling component (1, 13) is connected between a drive input (4) and a drive output so that all torque transmitted between the input and output passes through said component. The disc coupling component (1, 13) has a radially extending portion, which may include a plurality of spokes (7), to which is attached a SAW based strain sensor which communicates with a stationary coupler (3) fastened to an engine block (5) for wireless transmission of data from the sensor, the strain sensor measuring the strain in the disc coupling component (1, 13) from which the torque carried in the input shaft (4) may be calculated.