Patent ID: 8775052
Filing Date: 2014-07-08
Classification: F02D

Abstract:
1. Method for isolating an actual sensor bias in a fuel delivery system having a fuel pump comprising: monitoring a plurality of fuel pump parameters, comprising: modeling a first fuel pump modeled parameter based on the monitored second fuel pump parameter and the monitored third fuel pump parameter, said modeled first fuel pump modeled parameter corresponding to a modeled pump current; modeling a second fuel pump modeled parameter based on the monitored first fuel pump parameter and the monitored third fuel pump parameter, said modeled second fuel pump modeled parameter corresponding to a modeled pump pressure; detecting first and second fuel pump sensor biases, comprising modeling a fourth fuel pump modeled parameter based on the monitored second and third fuel pump parameters; and isolating the actual sensor bias in one of the detected first and second fuel pump biases based on the monitored third fuel pump parameter and the modeled fourth fuel pump modeled parameter.