METHODS AND SYSTEMS FOR LEARNING VARIABILITY OF A DIRECT FUEL INJECTOR

摘要

Systems and methods for improving fuel injection of an engine that includes a cylinder receiving fuel from a direct fuel injector are disclosed. In one example, a transfer function or gain of a direct fuel injector is adjusted in response to an exhaust lambda value and a pulse width of a plurality of split fuel injections provided to an injector of the cylinder during a cylinder cycle.

主权项

1. A method for a cylinder, comprising:
splitting injection of a fuel amount into a plurality of injections during a cylinder cycle in response to a request to characterize a control parameter of a fuel injector delivering fuel to the cylinder; adjusting the control parameter based on an exhaust lambda value; and operating the fuel injector based on the adjusted control parameter.