Patent attributes
An internal combustion engine is with an injection valve for metering a fuel directly into a combustion chamber during injection. The injection valve is provided with an injection needle whose stroke can be variably adjusted for a given injection process. During the homogenous operation of the internal combusting engine with a desired homogenous fuel distribution, the inventive method consists in predefining a fuel pressure set value, in associating a predefined minimum stroke set value with an injection needle stroke set value, in adjusting a meterable fuel mass set value by modifying an injection duration set value when said injection duration is equal to or less than a predefined maximum duration value. If not, the injection needle stroke set value is modified until the injection duration set value is equal or greater than said predefined maximum duration value. Afterwards, the injection needle stroke and injection duration set value is respectively adjusted.
