Fuel injector calibration method and apparatus

摘要

A method for calibrating an electronic fuel injector may include: setting a supply voltage to a control module; applying a control voltage signal having a pulse width to an electronic fuel injector by the control module; determining whether a fuel pressure of a fuel supply to the electronic fuel injector decreases by a predetermined amount; and in response to determining that the fuel pressure of the fuel supply to the electronic fuel injector decreases by the predetermined amount, recording the pulse width and the supply voltage to the control module.

主权项

1. A method for calibrating an electronic fuel injector, the method comprising:
setting a supply voltage to a control module; applying a control voltage signal having a pulse width to an electronic fuel injector, wherein the control module is configured to apply the control voltage signal; determining whether a fuel pressure of a fuel supply to the electronic fuel injector decreases by a predetermined amount; and in response to determining that the fuel pressure of the fuel supply to the electronic fuel injector decreases by the predetermined amount, recording the pulse width and the supply voltage to the control module; in response to determining that the fuel pressure of the fuel supply to the electronic fuel injector does not decrease by the predetermined amount: incrementally increasing the pulse width of the control voltage signal; applying the control voltage signal to the electronic fuel injector after each incremental increase in the pulse width; determining at each application of the control voltage signal whether the fuel pressure of the fuel supply to the electronic fuel injector decreases by the predetermined amount; and in response to determining that the fuel pressure of the fuel supply to the electronic fuel injector decreases by the predetermined amount, recording the pulse width and the supply voltage to the control module, wherein the control module comprises a processor and a storage unit.