Pressure responsive fuel injector actuated by pump
US4579283A · kind A · utility
14Cited by
11References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1984 |
| Grant date | Apr 1, 1986 |
| Priority date | — |
| Expiry date | Jun 11, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2200/703
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injector for an internal combustion engine, the injector being actuated by a piezoelectric actuator. The piezoelectric actuator operates a piston, which changes the volume of a pump chamber formed between the piston and a nozzle needle. The nozzle needle moves up and down in response to a pressure in the pump chamber to open and close a port for injecting fuel. The piston is pressed toward the pump chamber by a fluidic force or a spring force and so on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.