HIGH PRESSURE, HIGH SPEED REGULATING SWITCH VALVE

摘要

The present disclosure provides a fuel injector for an internal combustion engine with a fuel injector body having a valve chamber, a first conduit in fluid communication with the valve chamber for a first flow of fuel having a first pressure, and a second conduit in fluid communication with the valve chamber for a second flow of fuel having a second pressure. The fuel injector further includes a valve member configured to move between the first conduit and the second conduit. Additionally, an actuator of the fuel injector is configured to move the valve member during a fuel injection cycle. The fuel injector is configured to operate in at least three modes.

主权项

1. A fuel injector for an internal combustion engine, comprising:
a fuel injector body having:
a valve chamber;a first conduit in fluid communication with the valve chamber, the first conduit fluidly coupled to a first fuel source having a first pressure greater than 300 bar;a second conduit in fluid communication with the valve chamber, the second conduit fluidly coupled to a second fuel source having a second pressure greater than the first pressure; andan outlet port in fluid communication with the valve chamber; a valve member positioned within the valve chamber and configured to fluidly couple the valve chamber to the first conduit in a first position allowing fuel to flow from the first fuel source through the outlet port, and to fluidly couple the valve chamber to the second conduit in a second position allowing fuel to flow from the second fuel source through the outlet port, wherein the first position comprises the valve member positioned toward the second conduit, and wherein the second position comprises the valve member positioned toward the first conduit; and an actuator coupled to the fuel injector body and configured to move the valve member such that the valve member is in each of the first position and the second position during distinct portions of a single fuel injection event.