A Discussion on Vehicle AC System TXV Optimization Halla Visteon Climate Control Corporation

Format:

Conference/Event

Author/Creator:

Zheng, Zheng, author.

Conference Name:

SAE 2015 World Congress & Exhibition (2015-04-21 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2015

Summary:

This paper presents the way to optimize vehicle AC system TXV to meet the various AC system requirements. It discusses vehicle AC system TXV sizing and selection process. In today's automotive industry, sizing and selecting the TXV is more complicated than before as various new components are introduced such as external control compressor, internal control compressors and internal heat exchanger et cetera These components complicated the system interaction among the components. Thus it requires mapping TXV characteristic to meet the system demand. Sizing TXV capacity, it must start with the vehicle heat load requirement. The type of TXV (id est cross charge or parallel charge head) is determined by the system configuration such as compressor, evaporator, and condenser type and with or without internal heat exchanger, et cetera To optimize TXV in the system involves in evaluating TXV characteristic and cooling capacity in the various AC operating conditions. The criteria for the evaluation can determine how the selected TXV behaviors in the real world.The paper also discusses how the TXV manufacture 4-Q diagram can be utilized in optimizing TXV in the system. The case study shows how the presented TXV sizing and selection process works. The recommended TXV evaluation criteria are also discussed in the paper

Notes:

Vendor supplied data

Publisher Number:

2015-01-0364

Access Restriction:

Restricted for use by site license