| Patents for F01N 11 - Monitoring or diagnostic devices for exhaust-gas treatment apparatus (7,022) |
|---|
| 04/26/1988 | US4739614 Double air-fuel ratio sensor system in internal combustion engine |
| 09/16/1987 | EP0236659A1 Device for protecting the catalyst in a catalytic silencer for motor vehicles |
| 09/08/1987 | US4691562 Process for determining aging condition of exhaust-gas catalyst |
| 05/19/1987 | US4666194 Trunk lid fastening device for automobiles |
| 05/19/1987 | US4665690 Exhaust gas cleaning system for vehicle |
| 11/18/1986 | US4622809 Method and apparatus for monitoring and adjusting λ-probe-controlled catalytic exhaust gas emission control systems of internal combustion engines |
| 07/23/1986 | EP0188267A1 Exhaust gas cleaning system for vehicle |
| 02/09/1982 | US4315243 Unused fuel indicator for automotive engines employing catalytic converters |
| 10/06/1981 | CA1110087A1 Method and apparatus for quickly evaluating engine exhaust gas emissions |
| 01/27/1981 | CA1094348A1 Thermal reactor/catalytic converter efficiency determination method |
| 11/27/1979 | US4175427 Engine fault analysis on catalytic converter equipped autos |
| 08/14/1979 | US4164142 Method for setting side to side carburetor balance |
| 01/02/1979 | CA1045700A1 Engine with dual sensor closed loop fuel control |
| 11/21/1978 | CA1042683A1 Method and apparatus for production hot testing of engines under load |
| 09/26/1978 | US4116053 Thermal reactor/catalytic converter efficiency determination method |
| 02/15/1977 | US4007589 Internal combustion exhaust catalytic reactor monitoring system |
| 12/21/1976 | US3998095 Method and apparatus for quickly evaluating engine exhaust gas emissions |
| 09/07/1976 | US3979185 Catalytic converter having plural reaction stages with temperature-comparing means therein |
| 07/20/1976 | US3969932 Method and apparatus for monitoring the activity of catalytic reactors |
| 06/15/1976 | US3962866 Internal combustion exhaust catalytic reactor monitoring system |
| 02/24/1976 | US3939654 Engine with dual sensor closed loop fuel control |
| 02/17/1976 | US3938377 Method and apparatus for production hot testing of engines under load |