METHOD FOR OPERATING A DIRECT-INJECTION INTERNAL COMBUSTION ENGINE AND DIRECT-INJECTION INTERNAL COMBUSTION ENGINE

摘要

The invention relates to a method for operating a direct-injection, spark-ignition internal combustion engine comprising a direct-injection unit for injecting the fuel, by means of an injector, into the combustion chamber of at least one cylinder of the motor that is provided with an intake valve. According to said method, for a given operating point of the motor, the start of the injection is positioned in a range, in which the volumetric efficiency of the motor is at least 70 % of its maximum value lambdaI, the fuel being injected with a minimum atomisation quality corresponding to a droplet size of 12 µm SMD. The invention also relates to a direct-injection, spark-ignition internal combustion engine comprising a control module for defining the start of an injection according to the inventive method.