Lubrication Systems Questions and Answers Already Passed

Lubrication Systems Questions and Answers Already Passed What does the term viscosity refer to in engine lubricants? It indicates the oil's resistance to flowing. What defines a wet sump lubrication system? In this system, the oil is stored within the engine itself. What characterizes a dry sump lubrication system? This system involves keeping the oil in a separate tank, not integrated into the engine. How is the temperature of oil regulated in an aircraft engine with a reciprocating design? Hot oil is routed through the central part of the oil cooler, while cooler oil is bypassed around the outside to avoid further cooling. On an aircraft's instrument panel, does the oil temperature reflect the oil entering or leaving the engine? 2 It shows the temperature of the oil entering the engine. What is the rationale behind oil dilution in a reciprocating engine? In very cold conditions, gasoline is mixed with the oil before shutting down the engine to lower the oil's viscosity for easier starting. Once the engine is running, the gasoline evaporates from the oil. What role does the hopper play in oil tanks for certain reciprocating engines? The hopper is part of the oil dilution setup, allowing only the oil in the hopper to be diluted, thus speeding up the process and reducing the amount of gasoline needed. What becomes of the gasoline used for oil dilution in an aircraft's reciprocating engine? When the engine is operating and the oil warms up, the gasoline evaporates from the oil. What function do sludge plugs serve in a reciprocating engine's crankshaft? They capture and hold sludge from the oil until the engine is dismantled for overhaul. Which pump in a dry-sump lubrication system is larger: the pressure pump or the scavenger pump? 3 The scavenger pump is larger