Heating apparatus for vehicle having heat-generating unit
US5884839A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 1997 |
| Grant date | Mar 23, 1999 |
| Priority date | — |
| Expiry date | May 23, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01P2060/18
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a heating apparatus according to the present invention, when a temperature of cooling water in a cooling water circuit is equal to a set cooling water temperature or less, a viscous clutch is turned on to operate a viscous heater disposed in the cooling water circuit, for maintaining the temperature of the cooling water in the cooling water circuit at a predetermined value. A shaft of the viscous heater is rotated by a water-cooled engine through a belt transmitting mechanism and the viscous clutch. The set cooling water temperature is increased in accordance with an increase of a target air temperature calculated based on a set temperature, an inside air temperature, an outside air temperature, and a sunlight amount to optimize a used condition of the viscous heater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.