In which part or mechanical element is the electric retarder of a heavy vehicle usually installed?

Question

DentroTest · Accepted Answer

The electric retarder or decelerator (an eddy-current electromagnetic brake) is mounted in line with the drivetrain, specifically on the truck's driveshaft, between the gearbox and the drive axle or else attached to the gearbox output. Its function is to reduce and control the vehicle's speed without mechanical friction, transforming kinetic energy into heat that is dissipated into the air. Fitting it on the discs or the drums is a mistake, because that is where the friction service brakes go, which wear and suffer overheating (fading) if used for a prolonged time.

In which part or mechanical element is the electric retarder of a heavy vehicle usually installed?

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