Automotive air conditioning system including electrically operated expansion valve
US4632358A · kind A · utility
65Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 16, 1985 |
| Grant date | Dec 30, 1986 |
| Priority date | — |
| Expiry date | May 16, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An automotive air conditioning system including an electrically operated expansion valve controlling refrigerant flow to the evaporator. The valve is pressure balanced and provides a minimum flow even when the valve is fully closed. The valve includes a solenoid operator which is energized in a pulse width modulated fashion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.