FUEL DELIVERY CONTROL FOR AN INTERNAL COMBUSTION ENGINE

摘要

A method of controlling an internal combustion engine 10 is disclosed in which the method includes adjusting fuel pump output based on a fuel pressure sensor output when the fuel pressure sensor is determined to be operating correctly 412 and during a degraded condition of the fuel pressure sensor adjusting the fuel pump output in response to an output of an exhaust gas sensor 420. The engine may have a fuel vapour purging system, and a parameter of the said vapour purging system is adjusted during the degraded condition or the system may be disabled. The engine may have a common rail injection system. The injection control signal may be pulse width controlled in response to the signal from the exhaust gas sensor.