Experimental Investigation of Factors Affecting Odors Generating from Mobile AC Systems Equipped with Idling-Time Reduction Systems

Paper #:
  • 2015-01-0359

Published:
  • 2015-04-14
DOI:
  • 10.4271/2015-01-0359
Citation:
Uematsu, S., Uehara, T., Uchida, T., and Mathur, G., "Experimental Investigation of Factors Affecting Odors Generating from Mobile AC Systems Equipped with Idling-Time Reduction Systems," SAE Int. J. Passeng. Cars - Mech. Syst. 8(2):399-404, 2015, doi:10.4271/2015-01-0359.
Pages:
6
Abstract:
In last 10 years or so, a number of OEMs are designing vehicles with start-stop function to save energy and to reduce pollution. For these systems, the situations in which air-conditioning systems are used have been changing with a significant increase in adoption of idle-time reduction systems (no idling-system). Blower fan remains operating at idle condition while compressor stops in most cases for these systems. In this case, the air temperature at the vent outlets increases. The increase in the air temperature under range of thermal boundary conditions around the evaporator causes a concern of odor to occur. This paper describes and explains experimental studies on changes in heat and humidity at the air outlets according to the switching operation of compressor and root cause analyses of odor coming from air-conditioning system for vehicles with start-stop function.
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