Hydraulically actuated gaseous fuel injector
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 2, 2019
Grant Date -
Mar 15, 2018
app pub date -
Mar 11, 2016
filing date -
Mar 13, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Hydraulically actuated gaseous fuel injectors required a relatively small pressure bias between hydraulic fluid and gaseous fuel to be able to open and to reduce hydraulic fluid contamination of the gaseous fuel. An improved hydraulically actuated gaseous fuel injector includes an injection valve in fluid communication with a gaseous fuel inlet and includes a valve member reciprocatable within a fuel injector body between a closed position and an open position. There is a lift chamber in fluid communication with a hydraulic fluid inlet such that hydraulic fluid pressure in the lift chamber contributes to an opening force applied to the valve member. A control chamber is in fluid communication with the hydraulic fluid inlet such that hydraulic fluid pressure in the control chamber contributes to a closing force applied to the valve member. A control valve is operable to reduce hydraulic fluid pressure in the control chamber such that the opening force is greater than the closing force and the valve member moves to the open position.
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