What is one of the most common methods used for lubricating 4 stroke cycle engines?

The most common method used for lubricating 4-stroke cycle engines is the splash system. In this method, as the engine operates, components such as the crankshaft and connecting rods come into contact with oil, which is contained in the oil sump. The movement of these components splashes the oil around, ensuring that internal parts receive adequate lubrication.

This method is particularly effective for smaller engines, such as those found in lawnmowers, small tractors, and many types of equipment, where simplicity and reliability are key considerations. The splash system benefits from having fewer components than other lubrication systems, reducing the potential points of failure and the complexity of the engine design.

While pressure lubrication is more commonly found in larger and higher performance engines due to its ability to ensure consistent oil flow to critical components under varying operating conditions, the splash system remains widely used in many applications due to its straightforward implementation and lower cost. Drip and gravity feed systems are less common in 4-stroke engines, as they may not provide sufficient lubrication during all operating conditions.