Anode injector control algorithm for a low frequency discrete output
AssigneeGM Global Technology Operations LLC
InventorsDaniel C. Di Fiore, Matthew A. Lang
Life of this patent
Estimating the term…
Abstract
A system and method for controlling an injector in a fuel cell system. The method provides a variety of injector pulse widths for at least one predetermined duty cycle and determines an injector close time for each of the variety of injector pulse widths. The method also determines an error for the at least one predetermined duty cycle based on each of the provided injector pulse widths and uses the injector pulse width with the lowest error for the at least one predetermined duty cycle.
Claims20
A method for controlling an injector in a fuel cell system, said method comprising:
- setting an injector pulse width for at least one predetermined duty cycle;
- determining an injector close time for the at least one predetermined duty cycle based on the injector pulse width;
- changing the injector pulse width for the at least one predetermined duty cycle;
- determining an injector close time for the at least one predetermined duty cycle based on the changed injector pulse width;
- repeating the step of changing the injector pulse width for the at least one predetermined duty cycle such that a variety of injector pulse widths are used for the at least one predetermined duty cycle;
- repeating the step of determining injector close time for the at least one predetermined duty cycle each time the injector pulse width is varied such that injector close time is determined for each of the variety of injector pulse widths for the at least one predetermined duty cycle;
- determining an error for the at least one predetermined duty cycle for each of the injector pulse widths used;
- and
- using the injector pulse width with the lowest error for the at least one predetermined duty cycle.
A method for controlling an injector in a fuel cell system, said method comprising:
- providing a variety of injector pulse widths for at least one predetermined duty cycle;
- determining an injector close time for each of the variety of injector pulse widths;
- determining an error for the at least one predetermined duty cycle based on each of the provided injector pulse widths;
- and
- using the injector pulse width with the lowest error for the at least one predetermined duty cycle.
An injection system for injecting a fluid into a fuel cell system, said injection system comprising:
- a processor that provides:
- means for providing a variety of injector pulse widths for at least one predetermined duty cycle;
- means for determining an injector close time for each of the variety of injector pulse widths;
- means for determining an error for each of the at least one predetermined duty cycles based on each of the provided injector pulse widths;
- and
- means for using the injector pulse width with the lowest error for the at least one predetermined duty cycle.
Dependencies are inferred from the claim text.