What type of lubrication system do pressure-lubricated engines typically use?

Pressure-lubricated engines typically use a wet sump lubrication system. In this type of system, the oil is stored in a sump located at the bottom of the engine, and it is pumped through the engine's components under pressure. This helps to ensure that all moving parts receive a continuous supply of oil, which is essential for reducing friction and preventing wear.

The wet sump system utilizes a pump to circulate oil from the sump to the engine parts, which allows for efficient lubrication. Because the oil is readily available in the sump, it can quickly and effectively reach critical components such as bearings and piston rings.

This system is effective in most conventional engines because it is relatively simple and cost-effective to manufacture. In contrast, other types of lubrication systems, like dry sump or gravity lubrication, may involve more complex setups and are often used in specialized applications.