In the lubrication system, which component removes heat from the oil before it circulates to bearings and gears?

In the lubrication system, which component removes heat from the oil before it circulates to bearings and gears?

• A. Sump
• B. Oil pump
• C. Filters
• D. Oil cooler

Answer: (D)

Removing heat from the circulating oil is essential to keep its viscosity and lubricating film within a safe range for bearings and gears. The oil cooler is dedicated to transferring heat from the oil to a cooling medium (air or water). As oil is pumped from the sump, it loses heat in the cooler and then proceeds to the bearings and gears at a controlled temperature. This prevents overheating, which would otherwise soften or break down the oil, reduce film strength, and accelerate wear. The sump mainly stores oil; the oil pump moves and pressurizes it; filters remove particulates but don’t significantly reduce temperature. So, the component whose job is to remove heat from the oil before it reaches the moving parts is the oil cooler.

Removing heat from the circulating oil is essential to keep its viscosity and lubricating film within a safe range for bearings and gears. The oil cooler is dedicated to transferring heat from the oil to a cooling medium (air or water). As oil is pumped from the sump, it loses heat in the cooler and then proceeds to the bearings and gears at a controlled temperature. This prevents overheating, which would otherwise soften or break down the oil, reduce film strength, and accelerate wear.

The sump mainly stores oil; the oil pump moves and pressurizes it; filters remove particulates but don’t significantly reduce temperature. So, the component whose job is to remove heat from the oil before it reaches the moving parts is the oil cooler.