Method for monitoring injection process of e.g. diesel engine of motor vehicle, involves determining pressure difference from two pressure signals, and monitoring pressure difference based on injection process pressure difference

摘要

The method involves injecting fuel from a high pressure accumulator that is under pressure in a combustion chamber. Pressure in the high pressure accumulator is detected before the injection process, where a pressure signal is provided. The pressure in the high pressure accumulator is detected during the injection process, where another pressure signal is provided. The pressure difference is determined from the pressure signals and monitored based on the pressure difference of the injection process. The injection process is carried out based on the pressure difference. An independent claim is also included for a processing unit for executing a method for monitoring an injection process of an internal combustion engine.