Evaporative emission control device of an internal combustion engine for vehicle use

Patent · Tue May 03 04:00:00 EDT 1983

OSTI ID:6134347

Uchida, M; Yuzawa, T

An improved evaporative emission control device of an internal combustion engine having a variable venturi type carburetor which is effective to reduce unburnt components in the exhaust gas over the entire range of engine operation. Fuel vaporized in a fuel tank, a float chamber or the like and stored in a canister containing activated charcoal is supplied to an intake passage of the carburetor through a supply port which opens into the intake passage at a location between a throttle valve and a venturi valve which is disposed in the intake passage to vary the opening area of the venturi. A valve is disposed in a line connecting the supply port and the canister to control fuel vapor passing through the line. The valve is controlled to open and close in response to the operations of a clutch and/or a transmission device interposed in a power transmission system for conducting power from the engine to driving wheels.

• Assignee: Honda Giken Kogyo K K (Japan)
• Patent Number(s): US 4381753
• OSTI ID: 6134347
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330700* -- Advanced Propulsion Systems-- Emission Control
CARBURETORS
CONTROL EQUIPMENT
DESIGN
ENGINES
EQUIPMENT
EVAPORATION
EXHAUST GASES
FLOW REGULATORS
FLUIDS
FUEL SYSTEMS
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
PHASE TRANSFORMATIONS
POLLUTION CONTROL EQUIPMENT
VALVES
WASTES