Gaseous fuel and air proportioning device

Patent · Tue Jan 10 04:00:00 EST 1984

OSTI ID:6638439

Lassanske, G G; Poshlman, A G

The device for proportioning a gaseous fuel and air for combustion in an internal combustion engine includes a plate-like first member having a peripheral edge portion and a second member cooperating with the first member having a peripheral edge portion and a second member cooperating with the first member to define a mixing chamber having an outlet adapted to be connected in communication with the air intake of the engine carburetor. The second member also includes an annular portion having an arcuate first wall which is convex to and spaced from the peripheral edge portion of the first member to define an annular venturi having an inlet in communication with the atmosphere and an annular outlet in communication with the mixing chamber. A base member or second wall cooperates with the arcuate wall to form a substantially closed, annular plenum chamber into which a gaseous fuel, such as natural gas, is admitted when the engine is to be operated on the gaseous fuel. The gaseous fuel is admitted into the mixing chamber from the plenum chamber through one or more ports in the arcuate wall at or in the vicinity of the throat of the annular venturi. A pair of circumferentially spaced radially extending partitions located on the opposite sides of each port define a radially extending venturi which has a throat located at or in the vicinity of the port and serves to induce flow of the gaseous fuel through the corresponding port. The proportioning device preferably is arranged to fit inside the housing of an existing air cleaner.

• Assignee: Outboard Marine Corp.
• Patent Number(s): US 4425140
• OSTI ID: 6638439
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AIR
CARBURETORS
CHEMICAL REACTIONS
COMBUSTION
DESIGN
ENGINES
FLUIDS
FUEL ECONOMY
FUEL GAS
FUEL SYSTEMS
FUEL-AIR RATIO
FUELS
GAS FUELS
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MIXING
OXIDATION
THERMOCHEMICAL PROCESSES