FAA Powerplant Written Practice Test

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Prepare for the FAA Powerplant Written Test. Study with flashcards and multiple choice questions, each featuring hints and explanations. Ace your exam with confidence!

Practice this question and more.

In a dry sump reciprocating engine, where is the oil temperature regulator usually located?

At the scavenge pump outlet
Between the scavenge pump outlet and the storage tank
Near the oil pressure pump
At the engine oil filter

The correct answer is: Between the scavenge pump outlet and the storage tank

In a dry sump reciprocating engine, locating the oil temperature regulator between the scavenge pump outlet and the storage tank is crucial for effective oil management. This positioning allows the regulator to monitor and control the temperature of the returning oil before it enters the storage tank. When the oil returns from the engine after circulating, it can be quite hot. By positioning the temperature regulator in this area, the system can ensure that any excessively hot oil is cooled adequately before it is stored. This prevents overheating and maintains optimal oil viscosity for efficient engine operation. In addition, having the regulator in this location allows for better overall temperature management of the lubrication system, helping to prolong engine life and optimize performance.