Operating direct fuel injection combustion engine involves selecting high or low pressure starting using minimum fuel pressure and number of cycles dependent on combustion chamber temperature

摘要

The method involves feeding combustion air to a combustion chamber via an inlet channel, injecting fuel into the combustion chamber via a fuel nozzle, igniting a fuel/air mixture in the combustion chamber with an ignition plug at an ignition time and selecting a high or low pressure start depending on the minimum fuel pressure built up in a defined number of cycles during the injection process. The minimum fuel pressure and number of cycles are selected depending on the combustion chamber temperature. The method involves feeding combustion air to a combustion chamber (4) via an inlet channel, injecting fuel into the combustion chamber via a fuel nozzle, igniting a fuel/air mixture in the combustion chamber with an ignition plug (11) at an ignition time and selecting a high or low pressure start depending on the minimum fuel pressure built up in a defined number of cycles during the injection process. The minimum fuel pressure and number of cycles are selected depending on the combustion chamber temperature.