Lubricating oil system

In the name of Allah who is the most beneficient and merciful
Lubricating oil system:
In the lub oil system, oil os supplied to all bearing, pistons cooilng, sprayer, exhaust vv, actuators, controlled system,
guides, gears , chain drivers , and ( cycinder in trunk piston engines). lay out of lubricating system for a large main engine is
shown in the sketch.
lub oil presssure pumps draws oil form engine drain tank (sump tank) through suction strainer and discharge through fine filter
to enigne and distributed to bearings, pisotns, and other parts as mentioned above.
Pressure pumps , strainers and filters are in duplicate, one set is being used while other acts as a standby. Fine filter
should be capable to clean the oil without interupption flow of oil.(mesh size 50 microns).
WRITTEN BY S/C ZEESHAH AHMED
LECTURE BY: CHIEF ENGR. YASEEN SAHAB
EMAIL: ZEETEC4@YAHOO.COM
date: 14.july.2009
link: zeetec4.googlepages.com
link2:

Piston cooling water system

In the name of Allah who is the most beneficient and merciful

The cooling medium for the pistons varies with different engines, it may be frsh water, distilled water or lub. oil.
This system is indepentdent of the jacket system. The circulating pump draws water from a drain tank, passing it through
a cooler to the pisotn cooling inlet glands . cooling returns pass through sight glasses and thermometers before flowing
by gravity to drain tank. A heating coil fitted in the drain tank allows heating when warming of the engine is required
before starting the main engine.
WRITTEN BY S/C ZEESHAH AHMED
LECTURE BY: CHIEF ENGR. YASEEN SAHAB
EMAIL: ZEETEC4@YAHOO.COM
date: 13.july.2009
link: zeetec4.googlepages.com