Efficiency and emissions improvements for natural gas conversions of EMD 2-cycle medium speed engines
US10385807B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 17, 2017 |
| Grant date | Aug 20, 2019 |
| Priority date | — |
| Expiry date | Feb 10, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A gas injection valve includes a poppet valve extending from a valve body having a valve seat, a plunger moveable within a plunger body, a plunger stop axially moveable within a plunger stop enclosure formed within a plunger stop body secured within the valve body adjacent to the plunger body, a plunger follower secured to and extending through the plunger stop and in contact with the poppet valve, and a port for receiving hydraulic fluid extending through the valve body into the plunger stop body enclosure. The plunger stop is moveable between a first position and a second position. The gas injection valve has a first stroke length when the plunger stop is in the first position and a second stroke length when the plunger stop is in the second position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.