Issued Patents All Time
Showing 51–59 of 59 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7028464 | Method for purifying exhaust gas of an internal combustion engine | Hong Zhang | 2006-04-18 |
| 6959539 | Exhaust-gas cleaning system for an internal-combustion engine | Hong Zhang | 2005-11-01 |
| 6799419 | Method for diagnosing an exhaust gas cleaning system of a lambda-controlled internal combustion engine | Hong Zhang | 2004-10-05 |
| 6571550 | Method for adjusting the oxygen concentration in a three-way catalytic converter system | Hong Zhang | 2003-06-03 |
| 6439038 | Method for monitoring the operability of a lambda sensor | Hong Zhang | 2002-08-27 |
| 6318314 | Device for setting the movement behavior of gas-exchange valves of an internal combustion engine | Erhard Otto, Wolfgang Schulte, Hong Zhang | 2001-11-20 |
| 6287453 | Method for the diagnosis of a continuous-action lambda probe | Hong Zhang | 2001-09-11 |
| 5974870 | Process for model-assisted determination of the fresh-air mass flowing into the cylinders of an internal combustion engine with external exhaust-gas recycling | Stefan Treinies, Maximilian Engl | 1999-11-02 |
| 5889205 | Method for determining an air mass flow into cylinders of an internal combustion engine with the aid of a model | Stefan Treinies, Maximilian Engl | 1999-03-30 |