Patent Number: 6,253,739

Title: Dual function fuel supply module

Abstract: A dual function fuel delivery system is provided including a mechanical gear-driven pump and an electric pump. The electric pump is selectively energized to deliver fuel to the mechanical gear-driven pump. The electric pump is energized when an RPM level in the engine is less than a first threshold value or when a fuel rail pressure in a fuel rail of the system is less than a second threshold value. The electric pump is de-energized when the RPM level is greater than or equal to the first threshold value and the fuel rail pressure is greater than or equal to the second threshold value.

Inventors: Golomb; Christopher J (Rochester, MI), Bienick; Richard H (Rochester, MI), Walendzik; James A (Leonard, MI)

Assignee: DaimlerChrysler Corporation

International Classification: F02M 37/00 (20060101); F02M 033/04 ()

Expiration Date: 07/03/2018