Patent ID: 7404390

Claim:
A method for forming an ignitable fuel/air mixture in a combustion chamber of a spark-ignition internal combustion engine with direct injection, comprising: feeding combustion air to the combustion chamber via an inlet duct, injecting fuel into the combustion chamber by a fuel injector arranged in the combustion chamber, the fuel injector having an injection nozzle which opens to the outside, so that the fuel from the fuel injection nozzle is injected into the combustion chamber in the form of a hollow cone, and igniting a fuel/air mixture which is formed by a spark plug arranged in the combustion chamber, wherein fuel injection takes place in a plurality of part amounts, wherein, in a stratified charge operating mode of the internal combustion engine, the fuel injection is configured so that first, second, and third part amounts are introduced into the combustion chamber in a compression stroke of the internal combustion engine, and wherein ignition is performed based on at least one of a start of the injection of the third part amount and an end of the injection of the third part amount and in a range from 2° CA before the start of the injection of the third part amount to 20° CA after the start of the injection of the third part amount.