Patent · US Expired

Optimized CO2 operated air-conditioning system

US6588223B2 · kind B2 · utility

5Cited by

6References

5Claims

0Family size

Assignee

Visteon Global Technologies, Inc. · US

Inventors

Bernd Dienhart · Recklinghausen, DE
Hans-Joachim Krauss · Stuttgart, DE
Hagen Mittelstrass · Nagold, DE
Karl-Heinz Staffa · Stuttgart, DE
Christoph Walter · Stuttgart, DE
Jurgen Fischer · Backnang, DE
Michael D. Katzenberger · Florissant, US
Karl Lochmahr · Leinfelden, DE

Key dates

Filing date	Aug 13, 2002
Grant date	Jul 8, 2003
Priority date	—
Expiry date	Aug 31, 2022

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF25B2700/21173
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

An optimized CO2 air-conditioning system for a vehicle has individual components designed and/or matched to one another in such a way that if the high pressures in the high-pressure section deviate by up to ±30% from the optimum high pressures, the associated optimum performance figures are reduced by no more than 20%. The individual components include a controllable compressor, a gas cooler, an internal heat exchanger, an evaporator and an accumulator. As a result, a fixed throttle expansion member can be used between the high-pressure and low-pressure sections of the system.

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