Iskumäntäpolttomoottorikone ja menetelmä iskumäntäpolttomoottorikoneen käyttämiseksi

Internal combustion reciprocating piston engine and method for operating an internal combustion reciprocating piston engine which works according to the Diesel process and has at least one cylinder (10) in which is arranged a reciprocating piston (12) connected to a crankshaft (11), an air supply device (21) for providing combustion air in the cylinder, and a fuel injection arrangement (30) for injecting an LPG fuel from an LPG fuel reservoir (40) and a diesel fuel from a diesel fuel reservoir (50), wherein the method comprises: providing combustion air and compressing this combustion air in the cylinder, and injecting diesel fuel and LPG fuel by means of the fuel injection arrangement into the compressed combustion air in the cylinder, wherein prior to the injection of diesel fuel and LPG fuel the diesel fuel is mixed with the LPG fuel by means of the fuel mixing device (60) so that a homogeneous fuel emulsion of LPG fuel and diesel fuel is produced, and the fuel emulsion is subsequently injected into the at least one cylinder.