Fast fuel adjustment system diagnostic systems and methods
AssigneeGM Global Technology Operations LLC
InventorsWajdi B. Hamama, Richard D. Wells
Life of this patent
Estimating the term…
Abstract
A control system for diagnosing a fuel system of a vehicle is provided. The system generally includes a correction term module that estimates a fuel correction term based on a first fuel correction value and a second fuel correction value, wherein the first fuel correction value is based on a first period and the second fuel correction value is based on a second period, and wherein the first period is longer than the second period. A diagnostic module diagnoses the fuel system of the vehicle based on the fuel correction term.
Claims18
A control system for diagnosing a fuel system of a vehicle, comprising:
- a correction term module that estimates a fuel correction term based on a first fuel correction value and a second fuel correction value, wherein the first fuel correction value is based on a first period and the second fuel correction value is based on a second period, and wherein the first period is longer than the second period;
- and
- a diagnostic module that diagnoses the fuel system of the vehicle based on the fuel correction term.
A method of diagnosing a fuel system of a vehicle, comprising:
- estimating a fuel correction term based on a first fuel correction value and a second fuel correction value, wherein the first fuel correction value is based on a first period and the second fuel correction value is based on a second period, and wherein the first period is longer than the second period;
- monitoring the fuel correction term for change based on a stability threshold;
- and
- diagnosing the fuel system of the vehicle based on the monitoring of the fuel correction term.
Dependencies are inferred from the claim text.