15.10 lubrication system Flashcards
where does the lubrication system distribute oil to
engine bearing compartments
the gearboxes
what stores the oil in the engine
wet sump engine lubrication system
what are the two classification of the engine’s oil/lubrication system
- full-flow system
- constant pressure system
in the lubrication system, what is the breather connected to
the external gearbox
what is the supply system in a lubrication system between
the pump and the user
what are the two classifications of oil/lubrication systems
full-flow system
constant pressure
which of the two lubrications systems has no way of regulating oil pressure
full-flow system
in a full flow system, what is installed to prevent oil pressure from becoming too high
a pressure relief valve
does changes in oil temperature have effects on oil pressure in the constant pressure system
no it does not
There are two main disadvantages of the full-flow system, what are they
The system needs a large supply pump or a relatively high oil pressure when the engines are at idle
There is a significant rise in oil temperature after a power reduction
The basic lubrication system has four subsystems, what are they
An oil reservoir and supply system
A scavenge system
A vent system
A monitoring system
what is the purpose of the engine oil system
to supply oil to lubricate, cool and clean the engine bearing and gearbox
an oil system has three subsystems, what are they
storage
distribution
indicating
what are the two ways of filling a tank
gravity fill
pressure fill
what is the purpose of the scupper
it surrounds the filter, catching any oil spilled during the servicing and drains it to the engine drain mast
what are the two most common oil pumps
the gear pump
the gerotor pump
where can oil samples be take and what by
the tank via a sampling tube in the strainer
Some oil pumps serve a single function, what can they either be
supply pump
scavenger pump
what does a regulating valve system control
the system’s pressure to a limited pressure within the system
what is a pressure relief valve used to do
to relieve pressure and bypass the oil back to the inlet side of the oil pump
what is the purpose of a bypass valve in an oil system
to always to maintain proper oil temperature or pressure
what do all filters have
A filter housing
A removable cover
A filter bypass valve
Electric clogging indicators
where can the oil cooler in a lubrication system be installed
in the supply line downstream of the supply pump
if a oil cooler is installed in the supply line the system, what is it called
the hot tank system
If the oil cooler is installed in the scavenge line the system is called
the cold tank
what are the two types of oil coolers used for turbine engines
fuel cooled oil cooler
air cooled oil cooler
what type of oil cooler do most large jet engines use
fuel-cooled oil cooler
there are generally two types of transmitters used, what are they
the capacitance-type transmitter
the reed switch type transmitter
what is used to find out about the internal wear of lubricated engine components
A process called Spectrometric Oil Analysis Program (SOAP)
how do magnetic chip detectors work
they catch metal particles that are attracted to the magnet.
