Fuel injection valve with multiple nozzle plates
US6357677B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2000 |
| Grant date | Mar 19, 2002 |
| Priority date | — |
| Expiry date | Mar 30, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M61/1853
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A metering assembly for a fuel injector having multiple orifice plates is disclosed. The metering assembly includes a valve body, a seat, a needle and a multi-layer orifice plate assembly. The valve body has an inlet, an outlet and a longitudinal axis extending therethrough. The seat is disposed proximate the outlet and includes a passage having a sealing surface and an orifice. The needle is reciprocally located within the housing along the longitudinal axis between a first position wherein the needle is displaced from the seat, allowing fuel flow past the needle, and a second position wherein the needle is biased against the seat, precluding fuel flow past the needle. The multi-layer orifice plate assembly is located at the housing outlet and includes a first orifice plate having a plurality of first openings extending therethrough. The orifice plate assembly further includes a second orifice plate having a plurality of second openings extending therethrough. The plurality of first openings and the plurality of second openings are fluidly connected by at least one channel. A method of accelerating fuel through the injector is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.