Issued Patents 2003
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6662638 | System and method for determining degradation of an exhaust gas sensor in an engine | — | 2003-12-16 |
| 6650991 | Closed-loop method and system for purging a vehicle emission control | David George Farmer | 2003-11-18 |
| 6629453 | Method and apparatus for measuring the performance of an emissions control device | David Karl Bidner | 2003-10-07 |
| 6622476 | Lean NOx storage estimation based on oxygen concentration corrected for water gas shift reaction | Grant Alan Ingram | 2003-09-23 |
| 6604504 | Method and system for transitioning between lean and stoichiometric operation of a lean-burn engine | David George Farmer | 2003-08-12 |
| 6594986 | Oxidant storage capacity estimation | Grant Alan Ingram | 2003-07-22 |
| 6594989 | Method and apparatus for enhancing fuel economy of a lean burn internal combustion engine | Jeffrey Scott Hepburn, Jerry D. Robichaux, Michael John Cullen | 2003-07-22 |
| 6594985 | Exhaust gas aftertreatment device efficiency estimation | Grant Alan Ingram | 2003-07-22 |
| 6591604 | Oxygen storage capacity estimation | Grant Alan Ingram | 2003-07-15 |
| 6588200 | Method for correcting an exhaust gas oxygen sensor | Grant Alan Ingram | 2003-07-08 |
| 6574953 | NOx purge air/fuel ratio selection | Grant Alan Ingram, Jeffrey Scott Hepburn, John M. Roth, Joseph Robert Theis | 2003-06-10 |
| 6568177 | Method for rapid catalyst heating | — | 2003-05-27 |
| 6553757 | NOx purge air/fuel ratio selection | Grant Alan Ingram | 2003-04-29 |
| 6543219 | Engine fueling control for catalyst desulfurization | — | 2003-04-08 |
| 6543431 | System for air-fuel ratio control | Salomone Castro | 2003-04-08 |
| 6539704 | Method for improved vehicle performance | David Karl Bidner | 2003-04-01 |
| 6539706 | Method and system for preconditioning an emission control device for operation about stoichiometry | David George Farmer | 2003-04-01 |
| 6532732 | Method for improved vehicle performance | David Karl Bidner | 2003-03-18 |