Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system
Patent
1986-07-11
1989-09-19
Miller, Carl Stuart
Internal-combustion engines
Charge forming device
Having fuel vapor recovery and storage system
123179L, 123198D, F02M 3900
Patent
active
048671266
ABSTRACT:
A system for suppressing discharge of evaporated fuel gas is adapted to introduce the evaporated fuel gas generated in a fuel tank of an internal combustion engine into an intake passage, to suppress the discharge of the evaporated fuel gas into the atmosphere. The system comprises an evaporated fuel gas passage allowing the evaporated fuel gas within the fuel tank to be introduced into the intake passage and a controller variably controlling a cross-sectional area of the evaporated gas passage depending upon an operating condition of the engine. The cross-sectional area of the evaporated gas passage is controlled according to an amount of fuel supplied to the engine. In addition, the cross-section area of the evaporated gas passage may be controlled in response to the operating condition of the engine and may be controlled according to a preliminarily set comparative rotational speed in an idling condition of the engine. Alternatively, the cross-sectional area of the evaporated gas passage may be controlled correspondingly to the operating condition of the engine and, in addition thereto, may be controlled to assume either one of a fully open position and a fully closed position in response to the operating condition of the engine.
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Takao Mitsunori
Yonekawa Masao
Miller Carl Stuart
Nippondenso Co. Ltd.
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