A method of coding, decoding and usage of three-dimensional code is provided. Each read port is configured to be connected to a read line. The exhaust gas is recirculated to the combustion chamber during overrun operation of the internal combustion engine. Also provided is a control unit 15 that controls the motion of the knife holder 9. The grease includes a silicasilicate mixture that can imparts a relatively high pH and corrosion resistant properties to the grease.