System for controlling vaporized fuel in an internal combustion engine

Patent · Tue Dec 23 04:00:00 EST 1986

OSTI ID:6813223

Shibata, N

This patent describes an internal combustion engine comprising an engine body; an intake system connected to the engine body; a throttle valve arranged in the intake system; fuel passageway means opened to the intake system at a position downstream of the throttle valve in its idle position; a canister provided therein with a layer for absorbing vaporized fuel, the canister having a purge air inlet on one side of the layer and a purge air outlet on the other side of the layer; second passageway means for connecting the outlet of the canister with the intake system at a position always downstream of the throttle valve; purge control valve means for controlling the introduction of vaporized fuel from the canister to the engine; fuel-cut valve means for controlling the introduction of fuel from the fuel passageway to the engine; fuel-cut means responsive to a predetermined deceleration condition of the engine for operating the fuel-cut valve means so that the fuel passageway means are closed, including first sensor means for detecting a predetermined degree of throttle opening corresponding to the idle condition of the engine, second sensor means for detecting an engine speed lower than a predetermined value, and a first gate means responsive to signals from the first and the second sensor means for operating the fuel-cut valve.

• Assignee: Toyota Jidosha Kabushiki Kaisha, Toyota
• Patent Number(s): US 4630581
• OSTI ID: 6813223
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
ABSORPTION
AIR FLOW
AUTOMOTIVE FUELS
CONTAINERS
CONTROL EQUIPMENT
CONTROL SYSTEMS
ENGINES
EQUIPMENT
EVAPORATION
FLOW REGULATORS
FLUID FLOW
FUELS
GAS FLOW
HEAT ENGINES
INTAKE STRUCTURES
INTERNAL COMBUSTION ENGINES
LAYERS
MECHANICAL STRUCTURES
PHASE TRANSFORMATIONS
POSITIONING
SPEED REGULATORS
VALVES
VELOCITY