Sistema de medição de consumo de oleo lubrificante por nivel em motores de combustão interna / Measurement system for lubricant oil consumption by oil pan level in internal combustion engines

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

The measurement of lubricant oil consumption in internal combustion engines is known as inaccurate and too time consuming when used the drain-and-weight method, which is still widely used by several auto-parts companies at engine development. During this research, we studied the parameters that have an effect on this kind of measurement and tested the oil consumption measurement technique, based on the oil level in the oil pan. Great results were achieved by using a pressure transducer to assess the engine-oil level and measuring the oil pressure at the bottom of the oil pan. A good repeatability when damping the measurements with numerical averages was observed. The test duration for oil consumption measurements could be reduced from 60 to 20 hours of testing, with the same accuracy, and the total time of durability tests could be reduced from 6 to 13% due to drain and weight pause that no longer need to be made. After this study, as long as the parameters that have strong influence in the oil measurement are properly controlled, we could consider that the proposed system has lower complexity with respect to the drain-and-weight method, We have also detected improvements regarding safety, ergonomics and environment issues due to the large quantities of oil that is no longer need to be handled with the system proposed

ASSUNTO(S)

automoveis - motores - sistemas de lubrificação motores - sistemas de lubrificação oleos lubrificantes motors lubricant oil internal combustion engine motores de combustão interna automobiles motores engines

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