MISSED FUEL INJECTION DIAGNOSTIC SYSTEMS AND METHODS

摘要

An injector driver module applies power to a fuel injector of an engine for a fuel injection event. A voltage measuring module measures first and second voltages at first and second electrical connectors of the fuel injector. A parameter determination module determines a maximum value based on a first difference between the first and second voltages, determines a minimum value based on the first difference between the first and second voltages, and determines a second difference between the maximum and minimum values. A diagnostic module, based on the second difference between the maximum and minimum values, indicates whether the fuel injector injected fuel in response to the application of power.

主权项

1. A fuel control system for a vehicle, comprising:
an injector driver module that applies power to a fuel injector of an engine for a fuel injection event; a voltage measuring module that measures first and second voltages at first and second electrical connectors of the fuel injector; a parameter determination module that determines a maximum value based on a first difference between the first and second voltages, that determines a minimum value based on the first difference between the first and second voltages, and that determines a second difference between the maximum and minimum values; and a diagnostic module that, based on the second difference between the maximum and minimum values, indicates whether the fuel injector injected fuel in response to the application of power.