Systems and methods for a turbocharged internal combustion engine are provided herein. The fuel is supplied via a conveyor device arranged outside the firing region, in such a manner that it moves the fuel bed that is present in the direction towards the discharge opening. In some embodiments, iron is the majority component and tungsten is a minority component, with steel optionally forming a portion of the iron-containing component. A through hole which the engagement head can be engaged with by insertion is formed in part of the belt attaching member. wherein R1, R2 and R3 have the meaning as given in the specification and the claims. The computer chassis is configured to removably retain the PDC system in a docked mode, and when in said docked mode the PDC system is operable to communicate with the computer system through the respective communication interfaces and the computer system is operable to send data from the computer memory to the PDC system.