Modular fuel injector having a surface treatment on an impact surface of an electromagnetic actuator and having an integral filter and dynamic adjustment assembly
US6840500B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2003 |
| Grant date | Jan 11, 2005 |
| Priority date | — |
| Expiry date | Aug 22, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2200/9061
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injector for use with an internal combustion engine. The fuel injector comprises a valve group subassembly and a coil group subassembly. The valve group subassembly includes a tube assembly having a longitudinal axis that extends between a first end and a second end; a seat that is secured at the second end of the tube assembly and that defines an opening; an armature assembly that is disposed within the tube assembly; a member that biases the armature assembly toward the seat; an adjusting tube that is disposed in the tube assembly and that engages the member for adjusting a biasing force of the member; a filter that is disposed within the tube; and a first attachment portion. The coil group subassembly includes a solenoid coil that is operable to displace the armature assembly with respect to the seat; and a second attachment portion that is fixedly connected to the first attachment portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.