Dual fuel supply system
US4499887A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1983 |
| Grant date | Feb 19, 1985 |
| Priority date | — |
| Expiry date | Jan 28, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M1/16
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The dual fuel supply system for an internal combustion engine has a carburetor including a fuel/air induction passage having means defining a low pressure zone and a secondary orifice and further including a cavity communicating with the fuel induction passage through the secondary orifice. A first or primary fuel supply includes a first float bowl connected to a source of a primary fuel, such as kerosene, a first float controlled valve operable to control the supply of the primary fuel to the first float bowl, a fuel nozzle for supplying the primary fuel from the first float bowl to the low pressure zone, and a conduit connecting the first float bowl in communication with the carburetor cavity. The second or secondary fuel supply includes a second float bowl communicable with the carburetor cavity and connected to a source of a second or secondary fuel, such as gasoline, and a second float controlled valve operable to control the supply of the secondary fuel to the second float bowl. In one embodiment, the carburetor includes a throttle valve located downstream of the low pressure zone and a priming fuel port located downstream of the throttle valve. A primer pump having an inlet …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.