Patent · US Expired

Vehicle air conditioner

US4738396A · kind A · utility

88Cited by
1References
4Claims
0Family size

Assignees

Inventors

Key dates

Filing dateJun 4, 1987
Grant dateApr 19, 1988
Priority date
Expiry dateJun 4, 2007

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG05D23/20
  • WIPO fieldControl
  • WIPO sectorInstruments

Abstract

The operational temperature TP is determined as a function of the compartment temperature Tr. The blower speed is controlled along the characteristic line, the slope of which varies with the operational temperature TP. When the temperature of engine cooling water reaches a predetermined temperature, the speed of the blower is increased along the slope corresponding to the compartment temperature Tr. When the operational temperature TP is at least the predetermined temperature Tl, the speed of the blower is controlled as a function of time so that any violent increase in the blower speed may be prevented.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.