Two staged carburetor with arrangement for reducing fuel spillage

Patent · Tue Dec 11 04:00:00 EST 1979

OSTI ID:5376406

Emmons, J B

Disclosed herein is a carburetor comprising a first stage including a vertically extending primary air induction passage including a venturi section and a portion downstream of and below the venturi section, a primary fuel passage communicating with the venturi section of the primary air induction passage and with a fuel source, and a primary throttle valve mounted in the downstream portion of the primary air induction passage for movement between a partially open position and a fully open position. The second stage includes a vertically extending secondary air induction passage including a venturi section and a portion downstream of and below the venturi section, a secondary fuel passage communicating with the venturi section of the secondary air induction passage and with a fuel source, and a secondary throttle valve mounted in the downstream portion of the secondary air induction passage for movement between an open position and a closed position. A fuel or air passage communicates between the primary and secondary air induction passages for draining fuel accumulating in the secondary air induction passage above the secondary throttle valve to the primary air induction passage.

• Assignee: Outboard Marine Corp.
• Patent Number(s): US 4178331
• OSTI ID: 5376406
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320100* -- Energy Conservation
Consumption
& Utilization-- Buildings
AUTOMOTIVE FUELS
CARBURETORS
CONTROL SYSTEMS
DESIGN
ENGINES
FUEL SYSTEMS
FUELS
INTERNAL COMBUSTION ENGINES
VENTURI TUBES