The Oil Pump: Heart of Engine Lubrication
The oil pump is a vital component in any internal combustion engine. It ensures proper lubrication by circulating oil to various engine parts. Let’s dive into how oil pumps work and why they are essential.Get more news about Oil Pump,you can vist our website!

Basics of Oil Pump Operation
Forced-Feed System: Around 1900, internal combustion engines transitioned from a drip-feed system (where oil was dropped onto moving parts) to a forced-feed system. In the latter, oil is pumped to different engine components. All modern engines rely on this fully forced-feed lubrication system, with the oil pump at its core.
Function: The oil pump draws oil from the oil pan and forces it through oilways within the engine. After lubricating the components, the oil returns to the sump for recirculation.
Critical Role: An oil pump failure leads to expensive engine damage. That’s why the oil pump is directly driven from the crankshaft.
Types of Oil Pumps
Positive Displacement Pumps: All oil pumps fall into this category. They move the same amount of oil that enters. As engine RPM increases, the pump turns faster, pumping more oil.
Rotor-Type Pumps: These use rotors to create pressure and move oil. They are common in modern engines.
Gear-Type Pumps: Gear pumps have meshing gears that push oil. They are reliable but less efficient than rotor pumps.
Oil Pressure and Bearings
Oil Pressure: The oil pump doesn’t directly create oil pressure. Instead, pressure results from restrictions in oil flow (e.g., narrow passageways, jet nozzles, and tight bearing clearances).
Worn Bearings: Larger clearances in worn bearings reduce oil pressure. Main bearings are particularly critical.
Preventative Maintenance
Regular Inspection: Check the oil pump and pickup pipe for any blockages. A bypass valve in the pickup pipe can prevent catastrophic engine damage.
Replace When Necessary: If you notice oil pressure issues or unusual engine noises, consider replacing the oil pump