Cooling water temperature controlling apparatus
US5111775A · kind A · utility
18Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1990 |
| Grant date | May 12, 1992 |
| Priority date | — |
| Expiry date | Dec 5, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01P2007/146
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A cooling water temperature controlling apparatus for an internal combustion engine comprises a butterfly valve placed in a cooling water passage for the internal combustion engine at a position between the inlet port of a radiator and the inlet port of a radiator bypass pipe, and a stepper motor connected to the butterfly valve through a reduction gear having a worm gear wheel so as to adjust a degree of opening of the butterfly valve depending on the temperature of cooling water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.