A communication system includes: a communication device; and a data receiver that is configured so as to be capable of being connected to the communication device. For each cylinder two coolant ducts are formed in the cylinder head and each is fluidly connected to the corresponding coolant distributing chamber and the corresponding coolant accumulating chamber. A method according to the technique may involve sending a server signed certificate from the device prior to any communication to receive tickets. In a first embodiment, a first probe may be provided for carbon monoxide detection with a second probe being provided for hydrogen cyanide detection. The belts are then cooled and the matt 1 with saturation layer applied is wound for further processing. Each second capacitor is connected in series to a respective one of the output paths.