The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 08, 2003
Filed:
Aug. 05, 2002
Bernd Dienhart, Köln, DE;
Hans-Joachim Krauss, Stuttgart, DE;
Hagen Mittelstrass, Bondorf, DE;
Karl-Heinz Staffa, Stuttgart, DE;
Christoph Walter, Stuttgart, DE;
Michael Katzenberger, Brackenheim, DE;
Karl Lochmahr, Vaihingen, DE;
Werner Strauss, Bietigheim, DE;
Visteon Global Technologies, Inc., Dearborn, MI (US);
Abstract
An air-conditioning system operated with CO for a vehicle has a high-pressure section that is connected to the output of a compressor and includes a gas cooler, a low-pressure section that is connected to the suction side of the compressor and includes an evaporator, and an expansion member connecting the high-pressure section and the low-pressure section. The expansion member has a fixed restrictor with a throttle opening of predetermined length and diameter connected between an inlet from the high-pressure section and an outlet to the low-pressure section whereby under all operating conditions of the system, a pressure of refrigerant in the high-pressure section of the system is limited to values of less than 14 MPa. The restrictor can be connected in parallel with a pressure limiting valve and can include two or more different throttle openings that can be selectively connected for refrigerant flow.