Fuel viscosity/density compensation device
US4889092A · kind A · utility
4Cited by
12References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 18, 1985 |
| Grant date | Dec 26, 1989 |
| Priority date | — |
| Expiry date | Jul 18, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D1/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Apparatus and a method for effecting fuel viscosity/density compensation are disclosed. A combination of fuel flow through a viscosity sensitive annular orifice and a swirl-type orifice are utilized to create pressure differentials for driving a piston for regulating fuel flow. The components are positioned such that the direct variation of pressure drop across the annular flow orifice with viscosity change and the inverse variation of pressure drop across the swirl orifice with viscosity change, are combined to create an increased force for achieving the desired control effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.