Air conditioning installation, especially for a motor vehicle
US5720181A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1996 |
| Grant date | Feb 24, 1998 |
| Priority date | — |
| Expiry date | Dec 19, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60H1/00849
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A motor vehicle air conditioning system includes an adjustable position air inlet valve for controlling the relative proportions of recirculated air and fresh air from outside entering the system. A first sensor and a second sensor give respective measurement signals representing the inside temperature of the cabin and the outside temperature. The occupant of the vehicle can set a required value of inside temperature on a data unit, which memorizing this setting. The installation includes a processor for computing the difference between the actual inside temperature and its required value, and for memorizing at least one first temperature threshold value. The processor makes a first comparison between this first threshold value and the computed absolute value of the temperature difference, and then performs a second comparison between the inside and outside temperatures. The installation also includes control means for positioning the air inlet valve as a function at least of the first and second comparisons: this enables the temperature inside the cabin to be adjusted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.