Abstract:The measurement and evaluation of the tumble motion in an engine cylinder are widely achieved by steady-flow tests. However, there is absence of a standard methodology for the evaluation of the tumble motion in the steady-flow tests. The aim of this paper is to analyse the variation in the evolution of the tumble motion with different tumble test methods. Both steady-flow tests and particle image velocimetry measurements were carried out on a commercial four-valve spark ignition engine. The results showed that… Show more
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