Caterpillar Inc.
FLEXIBLE RATE SHAPE COMMON RAIL FUEL SYSTEM AND FUEL INJECTOR FOR SAME

Abstract:

A fuel system for an internal combustion engine includes a common rail and a plurality of fuel injectors connected to the common rail and each including an outlet check, an injection control valve, and an injection rate controller. The injection rate controller varies a flow area to a nozzle of the fuel injector such that a pressure drop through the fuel injector is varied to provide injection rate shaping.