naca-tn-952

Downloads49
File Size735.64 KB
Tags   Engines     Flows     NACA     Oils     Technical Notes  
Download
FileAction
naca-tn-952 A Unit Laboratory Engine Oil System Providing for a Remote Indication of Oil Flow and Oil Consumption Together with.pdfDownload 

National Advisory Committee for Aeronautics, Technical Notes - A Unit Laboratory Engine Oil System Providing for a Remote Indication of Oil Flow and Oil Consumption Together with Blow By Measurement

naca-tn-952-a-unit-laboratory-engine-oil-system-providing-for-a-remote-indication-of-oil-flow-and-oil-consumption-together-with-1

A unit oil system and oil—weighing device designed for labora-
toryengine tests to permit the remote measurement of oil—flow rate
and oil consumption is described. The systemregula-tes the Oil
pressure and temperature and is'closed to make possible the accurate
measurement of blow—by gas. The oil is, weighed by a self—Contained
diaphragm and pilot-valve assembly, which uses compressed air as
the transmitting medium. Several of these unit systems have given
satisfactory service for more than a year.

A unit oil system and oil—weighing device for laboratory test
engines was developed during 191.12 and 191;} by the Fuels and Lubri—
cants division of the NASA. The Object of this development was to
provide an accurate semiportable laboratory oil system of the closed
type for the measurement of blow—by gas and the elimination of fumes.
A remote means of indicating oil flow” and oil consumption was pro-—
vided in order that the oil system might be placed below the test
engine to permit the use of a gravity Oil return, which would obviate
the need .for a scavenge pump with its consequent foaming.

A single-cylinder—engine oil system with connections to the_
test engine and closed piping circuit for blow—by me,asi1rement is
shown schematically in figure 1. zifhe main components of .the oil
system are oil—weighing tank and "signing—diaphragm assembly, oil
pump, oil—temperature-regulator System, and oil strainer. Oil
-flows by gravity, or is pumped from the engine sump to the top of
the oil-weighing tank from which it flows by gravity, to the lower
compartment. It is then pumped by a gear pump through the oil
heater-cooler system, which regulates the oil temperature, and
then back to the engine through a combined oil strainer and mani-
fold, which supplies lubricant to the various engine bearings and
spray jets. It will be noted that, although all the oil passes
through the oil heater, the flow divides on its way to the
temperature~regulating valve, some going through the oil cooler
and the rest flowing directly to the temperature—regulating valve.

The heating elements of the oil heater have a low-wattage
dissipation per unit surface area to avoid local overheating with
consequent deterioration of the oil. A thermoswitch at the outlet
of the oil heater turns off the heater when the temperature of the
oil reaches the desired value.


Have A Comment On This Article? Post It Here.

Comments are moderated and will not be published until approved. Your email address will be kept confidential. Please review our Comment Policy before posting your comment.

*

Microsoft Excel Spreadsheets

FREE ANALYSIS SPREADSHEETS 3 Over the last 10 years we have developed hundreds of spreadsheet tools to help us with our structural analysis work. We have made these available through the Abbott Aerospace web site and the XL Viking project. We have now brought them into the technical library. They have been updated, improved and the collection has been expanded to cover more analysis methods than ever before.

The XL-Viking Add-In for Excel

XL-Viking 2 We created the XL-Viking Excel add-in to satisfy our own need to make Excel a better engineering tool. XL-Viking shows your Excel Formula in a way that makes sense and brings essential new functionality to Microsoft Excel by providing an additional user interface and easy to use functions.

The Indispensable Tool For Engineers, Mathematicians, Scientists, Accountants and Teaching Professionals!

download-xl-viking

Technical Papers & Reports

This is our collection of public domain references. All of the material we make available has been placed in the public domain by the authors/owners. If you believe this is not the case and any of the library material is not in the public domain please let us know. If you have any reference material that you would like to see included in the library we would love to hear from you.

Market Analysis and Market Information

Our newest addition to the library is an on-going series of articles on the aircraft and aerospace market. These are part quantitative and part qualitative and introduce a new aspect to the competencies within Abbott Aerospace.