Tritium method oil consumption and its relation to oil film thicknesses in a production diesel engine
Abstract
Oil consumption was measured in a modern production diesel engine using tritium as a radiotracer. The measurements were made primarily at two speeds and one load using first a single-grade lubricant and then a multi-grade lubricant. These values were then compared to oil flow rates up/down the liner which were based on film thickness traces of a sister engine under the same loads and speeds. The traces were obtained using the laser-fluorescence technique. For the most part, it was discovered that there does not seem to exist a correlation between these flow rates and oil consumption. However, the traces do reveal that the crown land is dry on all four strokes and thus does not contribute to the engine's oil consumption. A larger data base is necessary in order to accurately compare oil consumption to the film traces. This is currently in progress as of this writing. (JS)
Description
CIVINS (Civilian Institutions) Thesis document
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Related items
Showing items related by title, author, creator and subject.
-
Energy-efficient and Fault-tolerant Mobile Cloud Storage
Chen, Chien-An; Stoleru, Radu; Xie, Geoffrey G. (IEEE, 2016-10-03);Mobile Cloud Storage (MCS) systems - cloud storageon mobile devices without access to remote data center-type cloud resources, are not only interesting from a theoretical point of view, as they pose the most challenging ... -
Direct observation of oil consumption mechanisms in a production spark ignition engine using fluorescence techniques
Lusted, Roderick M. (Monterey, California. Naval Postgraduate School, 1994);The oil consumption characteristics of a four cylinder, normally aspirated spark-ignition engine were investigated for different piston ring end-gap configurations. A radiotracer was used to perform direct measurement of ... -
Real and money consumption as functions of money income
Folsom, Roger Nils (Wiley Online, 1969-03);Most presentations of the “standard” Keynesian macroeconomic model include a consumption function in which real (deflated¹) consumption expenditure is a function of real income. Such a function assumes that a rise in ...