Fuel injection valve
US5871157A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1997 |
| Grant date | Feb 16, 1999 |
| Priority date | — |
| Expiry date | Jun 5, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M51/0671
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injection valve comprises PA1 a valve unit 3 which includes a hollow valve body 9, a valve seat 11 provided at an end of the valve body and having an injection nozzle 10, a valve 12 movable in the valve body to come into contact with and separate from the valve seat 11 so that the injection nozzle 10 is opened and closed, and PA1 a swirler 13 which is arranged around the valve 12 to support the same in a slidable manner and which provides a swirling force to fuel flowing through the injection nozzle 10, wherein the swirler 13 has outer circumferential surface portions 19a which are in contact with an inner circumference of the valve body 9 to regulate the position with respect to the valve body 9; flow passage portions formed between adjacent outer circumferential surface portions 19a to define fuel passages for passing fuel in the axial direction, and swirling grooves 25 formed in the end surface which faces the valve seat 11 in the axial direction so as to be at an eccentric position with respect to the center axis of the swirler 13, and PA1 wherein an annular groove 24 is formed in the swirler 13 at an inner circumference of the end surface of the swirler facing the valve…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.