System for detecting the compression of liquid refrigerant in a compressor and controlling the compressor
US5347824A · kind A · utility
10Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1993 |
| Grant date | Sep 20, 1994 |
| Priority date | — |
| Expiry date | Apr 8, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/20
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Problems accompanying the appearance of compressed liquid refrigerant in a compressor are solved and deterioration of vehicle performance and degeneration of a magnetic clutch (when there is no compressed liquid refrigerant in the compressor) are prevented. An ECU 7 for energizing magnetic clutch 5 determines that there is liquid refrigerant in a compressor when a reduction rate .DELTA.NE of the engine revolution number is larger than a set value when the compressor 4 is started and the magnetic clutch is de-energized for a certain period of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.