Arrangement for switching in an exhaust-gas probe heater
US5156044A · kind A · utility
2Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1991 |
| Grant date | Oct 20, 1992 |
| Priority date | — |
| Expiry date | Jun 14, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/1494
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention is directed to an arrangement for advancing the point in time at which the mixture control is placed into operation when starting an internal combustion engine. This advance is made possible in that the exhaust-gas probe heater is already switched on in advance of the start of the engine. Operations are utilized for triggering the required switching signal which occur when the vehicle is taken into service such as opening the doors of the vehicle. An unnecessary heating of the exhaust-gas probe is precluded by limiting the time duration of the heating pulse applied to the heater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.