Device for fuel injection for internal combustion engines

An internal combustion engine equipped with supercharging (2), whereby this supercharging (2) is designed to compress the charge air (3) through the intercooler (4), into the charge air pipe (5) with overpressure up to 2.8 BAR at full load, whereby the operation of the throttle valve (6) is to provide a sufficient amount of charge air (3) into the main combustion chamber (11), while at the same time throttling an overpressure of the charge air (3) from the charge air pipe (5) to achieve a pressure reduction of the charge air (3) in the intake port (10), a result of which a temperature reduction of the charge air (3) in the intake port (10) up to −20° C. (−4° F.) at full load, whereby an internal combustion engine is designed to operate with a high compression ratio 16:1, whereby an internal combustion engine is equipped in the cylinder head (18) with one swirl chamber (13), or with one pre-chamber (13) per main combustion chamber (11), whereby only the swirl chamber (13), or the pre-chamber (13) is equipped with an injection nozzle (14), whereby the fuel-air mixture is formed only in the swirl chamber (13), or in the pre-chamber (13), according to the engine load, whereby in the full engine load, the injection nozzle (14) creates in the swirl chamber (13) a very rich mixture, whereby at part engine load, the proportion of fuel (8) in the mixture in the swirl chamber (13) gradually decreases, whereby into the main combustion chamber (11) only the charge air (3) takes place, whereby the fuel-air mixture in the swirl chamber (13) and the charge air (3) in the main combustion chamber (11) are separated before ignition, characterized in that the volume of the swirl chamber (13), or of the pre-chamber (13) in the cylinder head (18) is 8% to 15% of the combined volume of the swirl chamber (13) and main combustion chamber (11), when the piston (12) is at top dead centre (21).