What type of lubrication system is commonly used in pressure lubricated systems?

Wet sump lubrication is the correct answer because it is a widely utilized method in pressure lubricated systems. In a wet sump lubrication system, the oil is stored in a reservoir located at the lowest point of the engine or machinery. This design allows the oil to be easily pumped to the various parts that require lubrication through pressure. The oil is continually circulated, ensuring consistent lubrication and cooling of components, which is essential in preventing wear and maintaining optimal operation.

Pressure lubrication typically relies on a pump to push the oil through the system, creating the necessary pressure to deliver the lubricant to bearings, gears, and other critical areas. This method provides efficient lubrication, minimizing friction and heat generation.

In contrast, dry sump lubrication uses an external reservoir and is primarily seen in high-performance engines, where it offers advantages like maintaining consistent oil supply under extreme conditions. Gravity lubrication relies solely on the force of gravity for oil delivery, which is less effective in maintaining pressure and flow in complex systems. Forced lubrication is a broader term that encompasses any system using a pump, but in the context of standard pressure lubricated systems, wet sump lubrication is more specific and commonly applied.