Dual fuel supply system

Patent · Tue Mar 20 04:00:00 EST 1984

OSTI ID:6681116

Billingsley, H C

Disclosed herein is a fuel supply system comprising a carburetor including an air/fuel induction passage including a main supply jet and a secondary orifice, a first float bowl having an auxiliary outlet and communicating with the main jet, and a first float controlled valve communicable with a source of a first fuel and operable to control supply of the first fuel to the first float bowl, a combined auxiliary float bowl and primer comprising a housing including a second float bowl, a cavity, a duct extending between the cavity and the second float bowl, a second float controlled valve communicable with a source of a second fuel and operable to control supply of the second fuel to the second float bowl, a movable wall located in the cavity and defining a primer fuel chamber which can be varied in volume and which communicates with the duct, a handle connected to the movable wall for displacing the movable wall to vary the volume of the primer fuel chamber, a check valve in the duct permitting flow from the second float bowl and preventing return flow to the second float bowl, and an outlet communicating with the duct between the primer fuel chamber and the check valve, and a control valve connected to the secondary orifice, to the auxiliary outlet of the first float bowl, and to the outlet of the combined auxiliary float pg,2 bowl and primer and including a valve member movable between a first position communicating the secondary orifice with the outlet and disconnecting the secondary orifice from the auxiliary outlet and a second position communicating the secondary orifice with the auxiliary outlet and disconnecting the secondary orifice from the outlet.

• Assignee: Outboard Marine Corp.
• Patent Number(s): US 4437448
• OSTI ID: 6681116
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330603* -- Vehicle Design Factors-- Engine System
330800 -- Emission Control-- Alternative Fuels
CONTROL EQUIPMENT
DESIGN
DUAL-FUEL ENGINES
DUCTS
ENGINES
EQUIPMENT
FLOW REGULATORS
FUEL SYSTEMS
JETS
OPENINGS
VALVES