About 29 results
https://drivepatents.com/patents/1074875 · 17 Aug 2005
A vehicle air conditioning system equipped with a refrigerant circuit comprising an electrically operated compressor (18) is intended to enable simplification of data communication between the inside and outside of a passenger compartment. The air conditio...
https://drivepatents.com/patents/1076615 · 22 Jun 2005
Using a simple device, the evaporator surface is kept in a state of dampness by way of condensed water, offering an air-conditioning system that is able to suppress the occurrence of bad smells. In addition, in being able to influence the state of operatio...
https://drivepatents.com/patents/1081159 · 29 Dec 2004
A compressor output calculation unit having a variable displacement compressor, a condenser, a pressure reducing mechanism and an evaporator, wherein a compressor torque or power is calculated based on a detected or estimated value of a refrigerant flow ra...
https://drivepatents.com/patents/1081152 · 29 Dec 2004
A unit for calculating a compressor torque in a refrigeration cycle having a variable displacement compressor, a condenser, a pressure reducing mechanism and an evaporator, wherein the compressor torque is calculated from a pressure difference between a re...
https://drivepatents.com/patents/1081345 · 22 Dec 2004
A refrigeration cycle control unit comprises a discharge pressure estimation means for estimating a discharge pressure of a compressor (18) by referring to a physical value with a correlation with a suction pressure of the compressor (18) estimated or dete...
https://drivepatents.com/patents/1086949 · 26 May 2004
In a power-saving control device for an air-conditioning system according to the present invention comprising an air-conditioning duct having an air flow passage formed therein, a variable-capacity compressor that allows the output capacity with which a co...
https://drivepatents.com/patents/1089186 · 3 Mar 2004
An electronic expansion valve (3) of a refrigeration cycle is controlled such that during normal operation, refrigerant is always in a superheated state at the outlet of an evaporator (4). Then the refrigerant is periodically forced by a superheat control ...
https://drivepatents.com/patents/1090571 · 7 Jan 2004
A method and an arrangement in a vehicle to control a compressor (1) for an air conditioning system is presented. The arrangement comprises a compressor (1), adapted to be driven by an internal combustion engine (5) and to assume a first and a second opera...
https://drivepatents.com/patents/1091730 · 19 Nov 2003
In a vehicular air conditioning control apparatus having a compressor and an electric cooling fan of an externally controlled type, a fan motor control for increasing fan motor load is carried out in a compressor discharge capacity region lower than in nor...
https://drivepatents.com/patents/1091954 · 12 Nov 2003
An energy-efficient vehicle air conditioning system (10) includes a variable capacity refrigerant compressor (12) having a capacity control valve (17) with integral refrigerant sensors (142, 144) and control circuitry (228), and a driver interface panel (9...