Patent ID: 8951021
Filing Date: 2015-02-10
Classification: F02C,F04B,Y10T

Abstract:
1. A dual pump/dual bypass fuel pumping assembly, comprising: a dual bypass valve comprising a first pump arranged to supply fuel to the first inlet port; a second pump arranged to supply fuel to the second inlet port; a supply header arranged to supply fuel to the first pump and the second pump; a bypass header fluidically coupled to the first bypass port, the second bypass port, and the supply header; and a discharge header fluidically coupled to the first discharge port and the second discharge port; wherein, in a first position, the movable spool modulates fuel flow from the first inlet port between the first discharge port and the first bypass port and directs substantially all fuel flow from the second inlet port to the second bypass port; and wherein, in a second position, the movable spool directs substantially all fuel flow from the first inlet port to the first discharge port and modulates fuel flow from the second inlet port between the second discharge port and the second bypass port.