Nanoparticle measurements used to detect an engine oil control ring failure

作者：Swanson J^*; Ragatz A; Watts W; Kittelson D; Winsor R

来源：Proceedings of the Institution of Mechanical Engineers - Part D: Journal of Automobile Engineering , 2009, 223(D8): 1071-1076.

DOI：10.1243/09544070JAUTO1164

• diesel emissions
• engine maintenance
• particle measurements
• piston ring
• oil consumption

A cyclic variation in total particle number concentration was observed while making routine exhaust emission measurements. Many dilution and engine operating conditions were examined and, by sequentially shutting down individual cylinders, the problem was traced to cylinder 2. The engine was disassembled and piston 2's oil control ring was found to be fractured. Replacement of the ring eliminated the particle concentration fluctuation. This paper presents the results of experimental measurements made to determine the cause of the irregular emissions.

• 出版日期2009-8