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Torque on Demand (Tod)

ToD Is becoming an increasingly demanded method of controlling torque distribution between front and rear axles of a 4WD vehicle






















Driveline torque sensors optimise vehicle performance and do not rely on predetermined software. Situated between the crankshaft and torque convertor, the flexplate sensor provides direct measurement of engine output torque for engine and transmission control.



Electrical Power Assisted Steering (EPAS)


Transense's SAW sensors measure torque in the steering column, which is a vital input to enable the EPAS control system to function correctly. Unlike existing EPAS torque sensors, the SAW approach does not require a low stiffness 'torsion bar', over which to measure the twist, coupled with mechanical over-torque protection. Instead, the SAW sensor is stiff and can be a simple modification of a section of the steering column. Compared with conventional hydraulic power assisted steering ('HPAS') systems, in which the engine driven power assisted steering pump is always consuming power, EPAS systems only take power when needed (at parking speeds primarily) from the vehicle battery. This results in improved fuel economy (2-3 percent savings) and therefore cost savings, reduced weight and easier installation.


SAW  Torque Sensor Design - EPAS