MECHANICAL FAILURE DIAGNOSIS IN AUTOMOTIVE AIR CONDITIONING SYSTEMS THROUGH THERMAL MEASUREMENTS |
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| Sergio Libanio Campos, José Luiz Fernandes, José Alberto Reis Parise |
- Abstract:
- The present paper describes a simulation model for the operation of an automotive air conditioning system subjected to typical mechanical failures. A review identified the most common mechanical failures in automotive A/C systems. Simple mathematical models of two of the most common of these failures were developed and introduced in a simulation model of the vapor compression cycle. Simulated components of the cycle, operating trouble-free or under failure, included the compressor and the condenser. The evaporator, thermal expansion valve, filter-dryer, hoses and connections are also sources of failures and malfunctions. The modeling effort was employed to relate temperature and pressure field measurements with typical system failures. Uncertainties of these measurements and their effect in the predictions of the most probable system failures were studied with the simulation model, aiming at the standardization of mobile A/C system diagnosis procedures.
- Keywords:
- diagnosis, automotive air conditioning, standardization
- Download:
- PWC-2006-TC12-019u.pdf
- DOI:
- -
- Event details
- Event name:
- XVIII IMEKO World Congress
- Title:
Metrology for a Sustainable Development
- Place:
- Rio de Janeiro, BRAZIL
- Time:
- 17 September 2006 - 22 September 2006