Diagnosing fuel supply system for internal combustion engine involves driving fuel delivery units feeding fuel from reservoir tank to engine depending on detected engine operating parameters

摘要

The method involves a drive unit driving at least two fuel delivery units (5,6) feeding fuel from a reservoir tank to an engine (25) depending on detected engine operating parameters. The feed units are driven separately via at least two separate end stages (15,16) depending on engine misfire detection and using a changeover routine (17). Misfires are detected from the measured revolution rate.