A combustion engine system, a retrofit system for retrofitting a combustion engine, and a method for retrofitting combustion engine

Abstract

A combustion engine system (10) comprising a combustion engine (20), a retrofit system (1) being retrofitted to the combustion engine (20), and an engine control arrangement, wherein the combustion engine (20) comprises a combustion chamber (27), an inlet channel (28) connected to the combustion chamber (27), a main fuel provision arrangement (22) connected to the inlet channel (28) and / or to the combustion chamber (27) and configured for providing a main fuel into the inlet channel (28) and / or into the combustion chamber (27), and a receiving arrangement (25) arranged in a housing (24) of the combustion engine (20), wherein the receiving arrangement (25) comprises an original opening (26) in the housing (24), the original opening (26) is originally formed into the housing (24) during an original manufacturing process of the combustion engine (20) and is not subsequently manufactured into the housing (24) after the original manufacturing process was finalized, the original opening (26) is forming a physical pathway between an environment (21) of the combustion engine (20) into the combustion chamber (27), wherein the retrofit system (1) comprises an additional fuel provision arrangement (2), which is configured for providing an additional fuel into the inlet channel (28) and / or into the combustion chamber (27), and wherein the additional fuel provision arrangement (2) is mounted by retrofitting to the receiving arrangement (25), in particular to the original opening (26), of the combustion engine (20), and wherein the engine control arrangement is configured for controlling the main fuel provision arrangement (22) and / or the additional fuel provision arrangement (2).