Cooling system for an internal-combustion engine of a motor vehicle having a thermostatic valve
US5617816A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 1996 |
| Grant date | Apr 8, 1997 |
| Priority date | — |
| Expiry date | Jan 11, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01P2025/66
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A cooling system and a method for controlling a cooling system for an internal-combustion engine of a motor vehicle having a thermostatic valve which can be switched over from a higher control level to a lower control level. A fan is provided which is assigned to a coolant radiator and which contains a fan control circuit with a temperature comparison step which compares the ACTUAL temperature of the coolant with a desired value. When the desired value is exceeded, a temperature signal is generated which is applied to an input of an AND-element. A switching signal for the switch-over of the thermostatic valve to the lower control level is applied to the other input of the AND-element which forms a switch-on signal for the fan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.