Comparação entre os processos de Cold Test e Hot Test em uma empresa fabricante de motores diesel

Abstract

Resumo: O teste a frio (Cold Test) é um processo inovador no Brasil com relação aos testes em motores diesel. Esse processo foi implementado em uma empresa fabricante de motores diesel, com o intuito Abstract:The Cold Test is an innovative process in Brazil regarding the tests in diesel engines. This process was implemented in a diesel engine company with the intention of becoming the main validation test before engines are sent to customers. Based on this hypothesis, the main reason of this investigation is to test whether it is possible to replace the Hot Test with the Cold Test. This was a shocking question, since the Hot Test is a reliable and established process for over 18 years. This research used a case study method. The detailed research has identified several criteria for comparing the two processes, such as: flowcharts, effectiveness, efficiency, complexity, approval levels, on-board worksheets and company FMEA documents. The results showed that the Cold Test process is more advantageous and sustainable, however the two processes are complementary. The study proved that the fully replacement of the Hot Test by the Cold Test is not possible, mainly the Cold Test process fails in detecting leaks.

Cleaner Production Initiatives in a Diesel Engines Factory

“…For this validation, a traditional checking process named Hot Test simulates the vehicle conditions by means of connecting the engine to a dynamometer [1]. Other engine checking process called Cold Test is a more efficiency method to verify the performance and assure the quality of internal combustion engines [2]. The main difference between these two methods is that the Cold Test does not require combustion.…”

“…context, the Cold Test is a sustainable process that met the three pillars of the Triple Bottom Line [2]. The use of Cold Test offers advantages compared to Hot Test related to the accuracy of failures diagnosis, test cycle time, consumptions of fuel, water and energy and pollutant gases emissions [7].…”