Abstract: Embodiments of the invention provide a thermal management unit including a housing, at least one fan, a plurality of thermoelectric modules, at least one heat sink assembly coupled to the plurality of thermoelectric modules, and controller providing power to the plurality of thermoelectric modules. The thermal management unit also includes a printed circuit board incorporating the plurality of thermoelectric modules and electrically connecting the plurality of thermoelectric modules to the controller. The printed circuit board separates an ambient side of the thermal management unit and an enclosure side of the thermal management unit.

Abstract: A tuned quick connect and disconnect coupling arrangement includes a tubular adapter removably secured to the output shaft of an engine and has an external spline formed on its periphery. A tuned resilient coupling assembly is secured to the dynamometer input shaft and has an internal spline adapted for meshing engagement with the external spline of the adapter for drivingly coupling the shaft to one another for checking the power output of the engine and is disengageable therefrom for uncoupling the shafts from each other. The coupling assembly includes an annular ring containing the internal spline, an elongate torque tube having a pair of radially outwardly extending flanges secured thereto at its opposite ends with one of the flanges resiliently connected to the annular ring, and a hub having a radially outwardly extending flange formed thereon resiliently connected to the other flange of the torque tube.