Gasoline vapor capture and combustion system

Patent · Tue Apr 21 00:00:00 EDT 1987

OSTI ID:6812016

Kawashima, K; Asano, K; Takii, O

This patent describes an improved fuel vapor capture and combustion system comprising: a fuel tank including a fuel outlet; a vapor suction port in the upper part of the tank for receipt of fuel vapors generated in the tank; a cannister for purging fuel from fuel vapor collected in the suction port and including a vapor inlet, purge outlet, and an air vent for discharging air therefrom; a vapor conduit connecting the suction port with the vapor inlet; a carburetor including a fuel inlet, a fuel mixture outlet, and throttle valve means having start and stop positions; a purge inlet, in the carburetor leading to the throat thereof and arranged and disposed to be closed by the throttle valve means in response to closure of the throttle valve and further operative upon the opening of the throttle valve means to open; a fuel line connected between the fuel outlet and the fuel inlet; and a purge conduit connecting the vapor outlet of the cannister with the purge inlet of the purge valve means whereby fuel vapors collected in the upper portion of the fuel tank may, when the throttle valve is opened to open the purge valve, flow through the suction port to the vapor conduit, through the cannister and into the purge inlet of the carburetor and, further the vapors, when the throttle valve is closed causing closure of the purge inlet to block flow from the cannister through the purge conduit and into the purge inlet to the throat of the carburetor.

• Assignee: Yamaha Hatsukoki Kabushiki Kaisa, Iwata
• Patent Number(s): US 4658795
• OSTI ID: 6812016
• Resource Relation: Patent File Date: Filed date 17 Jun 1985
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
INTERNAL COMBUSTION ENGINES
CARBURETORS
FUEL SYSTEMS
TANKS
VEHICLES
AIR FLOW
COMBUSTION
GASOLINE
INTAKE STRUCTURES
VAPORS
VENTS
CHEMICAL REACTIONS
CONTAINERS
ENGINES
FLUID FLOW
FLUIDS
FUELS
GAS FLOW
GASES
HEAT ENGINES
LIQUID FUELS
MECHANICAL STRUCTURES
OXIDATION
PETROLEUM PRODUCTS
THERMOCHEMICAL PROCESSES
330100* - Internal Combustion Engines