Oilers/Plant Tenders (HHC) Civil Service Practice Exam

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What is the name of the lubricator that feeds oil in direct proportion to the speed of a steam engine?

Gravity lubricator
Forced feed lubricator
Manual lubricator
Suction lubricator

The correct answer is: Forced feed lubricator

The lubricator that feeds oil in direct proportion to the speed of a steam engine is called a forced feed lubricator. This type of lubricator operates by using a pump system that ensures oil is delivered to various engine parts based on the engine's speed. As the engine speed increases, the pump increases the amount of oil delivered, which helps to maintain proper lubrication under varying operational conditions. This system is essential in keeping the moving parts of a steam engine well-lubricated, thereby reducing friction and wear, and preventing overheating. The ability to automatically adjust the oil feed based on engine speed allows for consistent performance and reliability, making forced feed lubricators particularly valuable in high-speed or high-load applications like steam engines. Other lubricators such as gravity lubricators rely on the force of gravity and do not adjust the oil delivery based on speed, while manual lubricators require human intervention to apply oil, and suction lubricators depend on low pressure to draw oil into the system, neither of which provides the proportional oil delivery necessary for optimal steam engine performance.