公开(公告)号：US12158128B1

公开(公告)日：2024-12-03

申请号：US18324803

申请日：2023-05-26

Applicant: Caterpillar Inc.

Inventor： Satya Naga Deepak Pillarisetti ,  Mitchell B. Juchems ,  Pierson Klein ,  Lifeng Wang

IPC: F02M51/06 ,  F02D41/20 ,  F02D41/40 ,  F02M61/18

Abstract: An electronically controlled fuel injector includes an injection valve; a control valve fluidly connected between a pressurized fuel supply passage and a control chamber for controlling operation of the injection valve, the control valve movable between a non-injection position and an injection position; the injection valve configured to inject fuel with the control valve in the injection position; and a control member chamber including an orifice that fluidly connects the control member chamber with a low pressure return line of a fuel supply system. The control chamber is fluidly coupled with a pressure communication passage such that the control chamber is fluidly coupled with the low pressure return line through the orifice in the control member chamber when the control valve is in the injection position. The pressure communication passage includes a two-way, variable flow rate valve.