Fuel pump for an automotive fuel delivery system

摘要

A single fuel pump for a fuel delivery system supplies fuel from the fuel tank to a reservoir and also supplies fuel from the reservoir to the engine. The fuel pump has a single impeller having outer vanes and inner vanes radially inward from the outer vanes. The vanes are aligned with outer and inner channels in the pump housing, respectively, so that fuel may be pumped from the fuel tank into the reservoir. Fuel from the reservoir is then pumped to the engine.