The wireless temperature sensors are installed in the rotating connecting rod big end. The stationary antennas are screwed to a custom-designed bracket fixed inside the engine block in such a way, that the sensors and antennas pass within a fixed distance of each other at each rotation of the engine crankshaft. The resultant signal is then transmitted via a thin cable passing through the engine block, to the SPU fixed to the engine, and from there to the control room cabinet placed in the engine room.