Method of estimating the injection pressure of an internal combustion engine

摘要

A method of estimating an injection pressure for an internal combustion engine of an automotive system is disclosed that is well-suited for use with a digital pressure sensor, which periodically acquires injection pressure signals. An updated injection pressure value is calculated starting from an injection pressure signal and compensated with a pressure-correcting parameter, based on an elapsed time from the injection pressure signal acquisition, an actual engine speed and an actual fuel injection quantity.

主权项

1. An internal combustion engine comprising a fuel injection system provided with a digital pressure sensor, the fuel injection system being operable to:
periodically acquire an injection pressure signal from the digital pressure sensor; calculate an updated injection pressure value, starting from the injection pressure signal; compensate the updated injection pressure value with a pressure correcting parameter, based on an elapsed time from the injection pressure signal acquisition, an actual engine speed and an actual fuel injection quantity; and control the fuel injection based on the compensated updated pressure value.