Injector seals for dual fuel application
US-2017159625-A1 · Jun 8, 2017 · US
Hydraulically actuated gaseous fuel injector
US10247112B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10247112-B2 |
| Application number | US-201615557772-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 11, 2016 |
| Priority date | Mar 13, 2015 |
| Publication date | Apr 2, 2019 |
| Grant date | Apr 2, 2019 |
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Abstract
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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.
First claim
Opening claim text (preview).
What is claimed is: 1. A hydraulically actuated dual fuel injector for an internal combustion engine that introduces a liquid fuel separately and independently from a gaseous fuel, the fuel injector comprising: a gaseous fuel inlet; an gaseous-fuel injection valve in fluid communication with the gaseous fuel inlet and comprising a gaseous-fuel valve member reciprocatable within a fuel injector body between a closed position to block gaseous fuel flow and an open position to allo…
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Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US10247112B2 cover?
- 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 …
- Who is the assignee on this patent?
- Westport Power Inc
- What technology area does this patent fall under?
- Primary CPC classification F02D19/0694. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Apr 02 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).