Patent ID: 8061328
Filing Date: 2011-11-22
Classification: F02M,F04B

Abstract:
1. A fuel system comprising: a source of fuel; a source of lubrication fluid; a low pressure pump including: a high pressure pump including: a drain line fluidly connecting the weep annulus to the fuel source flow path and defining a fuel drain flow path; a T-connection coupled to the low pressure pump inlet, the T-connection defining a portion of the fuel source flow path and a portion of the fuel drain flow path so that the fuel drain flow path intersects the fuel source flow path at a substantially perpendicular angle; a common rail fluidly connected to the high pressure pump outlet; a plurality of fuel injectors fluidly connected to the common rail via individual branch passages; and an electronic controller in control communication with each of the plurality of fuel injectors and the high pressure pump, and wherein the electronic controller communicating a fuel injection timing and quantity control signal to each of the plurality of fuel injectors and a pump output control signal to the high pressure pump.