Ultrasonic fuel injector
US5330100A · kind A · utility
Inventor
Key dates
| Filing date | Jan 27, 1992 |
| Grant date | Jul 19, 1994 |
| Priority date | — |
| Expiry date | Jan 27, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M69/041
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A sealing shaft (23) with a conical male surface (48) is seated in a female conical valve seat (15). Sealing shaft (23) is attached to a pole piece (13) which, when energized by a solenoid coil (30), causes the sealing shaft to be pulled away from valve seat (15), resulting in release of fuel. A hollow ultrasonic horn actuator assembly (54), having a tapered part (11), includes a plurality of crystal actuators (14) to generate and amplify ultrasonic vibrations and to disperse and atomize the fuel as it passes through a narrow opening (45) in ultrasonic horn actuator assembly (54). Tapered part (11) and a compression member (12) are held together by a threaded stud (19). Horn actuator assembly (54) is centered about a sealing shaft (23) for flow of the fuel around the sealing shaft and inside the horn actuator assembly for release to an intake manifold of an engine through small opening (45).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.