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21 Cards in this Set
- Front
- Back
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What is meant by viscosity of an engine lubricating oil? |
Resistance of the oil to flow |
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What is meant by a wet sump lubrication system? |
An engine system that contains an Oil supply within itself |
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What is meant by a dry sump lubrication system? |
An engine system that doesn't contain an oil supply within itself |
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How is oil temperature controlled in an aircraft reciprocating engine? |
Hot oil goes through the core of the oil coolers and cold oil goes around the core of the oil cooler |
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Is the oil temperature on the aircraft instrument panel indicating the temperature of the oil entering engine or leaving the engine? |
Entering the engine |
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What is the purpose of oil dilution in a reciprocating engine? |
To reduce the viscosity of the cold oil making starting easier |
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What is the function of the hopper tanks used with some reciprocating engines? |
it's used for diluting the oil with the use of less gasoline |
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What happens to the gasoline that is used to dilute the oil in the crankcase o f an aircraft reciprocating engine? |
It evaporates out of the oil once the engine is running |
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What is the purpose of the sludge plugs in the crankshaft of a reciprocating engine? |
Traps sludge in the oil until it can be disassembled and removed during an overhaul |
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Which pump has the greater volume in a dry sump lubricating system, the pressure pump or the scavenger pump? |
Scavenger pump |
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Why do full flow oil filters have a spring operated bypass valve in them? |
To allow unfiltered oil through in the event that the filter is clogged |
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What is the function of the fuel oil heat exchanger in the lubricating system of a turbojet engine? |
Allows the oil to warm the fuel so ice will not form on the fuel filter |
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What kind of oil is used in most turbojet engines? |
Synthetic oil |
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Where are the last chance oil filters located in the turbojet engine? |
Just ahead of the oil spray nozzles |
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Where is the oil tank in a dry sump reciprocating engine vented? |
To the engine crankcase |
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What information must be displayed around the oil filter opening for turbojet engines? |
The word 'OIL' and oil designations in reference to the permissible oils of the airplanes flight manual |
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What is the function of the oil control rings on the Piston of an aircraft reciprocating engine? |
To maintain the appropriate quantity of oil between the piston and cylinder walls |
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What is meant by a spectrometric oil analysis? |
An analysis carried out on a sample of oil that is taken out of the engine on a regular interval, burnt up to determine the contents of the contaminants in the oil. It should be carried out for a period of time to observe the changes in the content of contaminants in the oil |
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What indication will a pilot have if his oil supply was low? |
High oil temperature and low oil pressure |
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What is meant by a hot-tank lubrication system? |
A system with the oil cooler located in the pressure subsystem |
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What is meant by a cold-tank lubrication system |
A system in which the oil cooler is located in the scavenger subsystem |
