As per findings from industry research, the application of electric oil pump engine lubrication represents a significant advancement over conventional mechanical pumps. On traditional automotive lubrication systems, the oil delivered to the engine is always dependent on engine speed for its functioning and performance . The oil pump promotes circulation through the galleries, with the fluid serving both lubricant and cooling functions . However, this speed-dependency creates inherent inefficiencies and wear issues.

A conventional lubrication system supplies more lubricant at higher speeds and less at lower ones—precisely the opposite of what an engine needs for optimal protection. This is where most engine wear takes place and efficiency is compromised . The hybrid lubrication system solves this problem by providing extra lubrication at lower speeds and automatically regulating the mechanical pump's supply to maintain ideal lubrication . Using an electric oil pump enables fluid circulation in an intelligent way, as the fluid flow is controlled electrically independently of engine functioning, allowing improvements not possible with conventional systems .

The dual-hybrid lubrication system, which combines a traditional mechanical oil pump with an electric pump, offers significant advantages. At starting conditions, particularly at cold start, both pumps work in tandem to supply lubricant at regulated pressure, achieving ideal lubrication and preventing losses from excessive fluid flow and pressure increments . This approach also provides pre and post-operation lubrication, allowing a coat of lubricant to be supplied to engine components before initial cranking, preventing metal-to-metal contact and wear . A variable speed motor is used to regulate the electric oil pump, which can be brought to work almost immediately depending on instantaneous requirements, preventing excessive loading on the engine .

The electric oil pump market continues to expand as manufacturers recognize the durability and efficiency benefits of intelligent lubrication systems. Hybrid lubrication represents a key opportunity for improving engine longevity and performance.

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