Air conditioning system for a motor vehicle
US6189325A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Aug 20, 1999 |
| Grant date | Feb 20, 2001 |
| Priority date | — |
| Expiry date | Aug 20, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B13/00
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An air conditioning system (10) for a passenger compartment of a motor vehicle having a windscreen comprises a first heat exchanger (14) positionable outside the passenger compartment; a second heat exchanger (18) positionable inside the passenger compartment; an expansion device (16) positioned in a first fluid passage (22) between the heat exchangers; an electronically controlled variable stroke compressor (12) for pumping fluid into the second fluid passage and either in a first direction (X) or in a second direction (Y); reverse flow means (32) in the second fluid passage for controlling the direction of the flow of fluid; first sensing means (36, 40) providing a first output signal indicative of the dewpoint temperature of the air leaving the second heat exchanger; second sensing means (53; 44,46,48) providing a second output signal indicative of the temperature of the windscreen; and control means (26,30) electrically connected to the first and second sensing means and to the compressor for receiving the first and second output signals, for determining the dewpoint temperature for the air leaving the second heat exchanger dependent on the first output signal, for determining …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.