Vehicle passenger compartment temperature control system with multi-speed response
US5226595A · kind A · utility
13Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 26, 1991 |
| Grant date | Jul 13, 1993 |
| Priority date | — |
| Expiry date | Dec 26, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60H1/00885
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A system for controlling vehicle passenger compartment comfort. An electronic controller receives input from: (i) a thermistor array sensing blower plenum discharge temperature, (ii) a user movable Level Select Control (iii) a potentiometer sensing the position of a servo driven heater core water valve, (iv) an engine rpm tachometer generator and (v) a blower speed signal. The controller drives the servomotor for the water valve at a "High" rate until the valve position potentiometer indicates that the valve is within fifteen degrees (15.degree.) of the target, whereupon the controller drives the servomotor at a "Low" speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.