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New test bench for measuring leak flow rate of mobile air conditioning hoses and fittings.

Nouveau banc d'essai pour mesurer les débits de fuites dans les tuyaux et les raccords de systèmes de conditionnement d'air automobile.

Auteurs : CLODIC D., BEN-YAHIA M.

Résumé

Refrigerant emissions from mobile air conditioning devices are due to several factors. Maintenance of systems is a key factor, and a systematic policy of refrigerant recovery permits reduction of emissions by more than 50%. Automotive air conditioning systems exhibit characteristics that explain why these systems are more leak-prone than others. Three factors explain much of the emission of refrigerant: flexible hoses, rotating seal of the compressor and the very specific mounting of the engine and circuit components under the hood of the vehicle. Leak-tightness of hoses is known to be poor. The test bench presented in this paper has been designed to measure leak flow rates of hoses. It permits measuring the leak rate of the three major components of a hose independently: the rubber or plastic hose itself, the crimp connecting the fitting and the hose, and the fitting.

Détails

  • Titre original : New test bench for measuring leak flow rate of mobile air conditioning hoses and fittings.
  • Identifiant de la fiche : 1998-3152
  • Langues : Anglais
  • Source : International Conference on Ozone Protection Technologies. Conference proceedings.
  • Date d'édition : 12/11/1997
  • Disponible à la bibliothèque de l'IIF

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