JPS6153553U

JPS6153553U -

Info

Publication number: JPS6153553U
Application number: JP13914184U
Authority: JP
Priority date: 1984-09-13
Filing date: 1984-09-13
Publication date: 1986-04-10

Description

[Brief explanation of the drawing]

第１図は、従来の燃料蒸気のパージ制御装置の
縦断面図、第２図は、本考案の第１の実施例に係
る燃料蒸気のパージ制御装置の縦断面図、第３図
は、本考案の第２の実施例に係る燃料蒸気のパー
ジ制御装置の縦断面図である。１，２……（燃料蒸気発生源）、１……燃料タ
ンク、２……フロート室、３……チヤコールキヤ
ニスタ、５……気化器、６……気化器の吸気通路
、７……エンジン、８……主パージポート、１０
……吸気マニホールド、１１……補助パージポー
ト、１２……主パージ通路、１３……補助パージ
通路、２１，３２……温度開閉弁、２２……気化
器の通路壁、２３……スロツトル弁、２４……吸
気マニホールドの吸気通路、２５……吸気マニホ
ールドの通路壁、２６……燃料蒸気のパージ制御
装置。 FIG. 1 is a longitudinal sectional view of a conventional fuel vapor purge control device, FIG. 2 is a longitudinal sectional view of a fuel vapor purge control device according to a first embodiment of the present invention, and FIG. 3 is a longitudinal sectional view of a conventional fuel vapor purge control device. FIG. 3 is a longitudinal sectional view of a fuel vapor purge control device according to a second embodiment of the invention. 1, 2... (Fuel vapor generation source), 1... Fuel tank, 2... Float chamber, 3... Charcoal canister, 5... Carburetor, 6... Intake passage of carburetor, 7... Engine, 8...Main purge port, 10
... Intake manifold, 11 ... Auxiliary purge port, 12 ... Main purge passage, 13 ... Auxiliary purge passage, 21, 32 ... Temperature opening/closing valve, 22 ... Carburizer passage wall, 23 ... Throttle valve, 24... Intake passage of the intake manifold, 25... Passage wall of the intake manifold, 26... Fuel vapor purge control device.

Claims

[Claims for Utility Model Registration] A vaporizer comprising a carbon dioxide gas canister for adsorbing fuel vapor generated from a fuel vapor generation source, a main purge port for purging the fuel vapor, and a carbon dioxide vaporizer for absorbing fuel vapor generated from a fuel vapor generation source. a main purge passage communicating between the nister and the main purge port; an intake manifold having an auxiliary purge port for purging fuel vapor; and an intake manifold communicating the charcoal canister with the auxiliary purge port. an auxiliary purge passageway is present, and the carburetor is regulated to supply an air-fuel mixture with the air-fuel ratio required by the engine when the engine temperature is at or above normal operating temperature. The main purge port is formed in a passage wall of the intake passage of the carburetor, and the main purge port is connected to the throttle valve of the carburetor when the throttle valve is at an idle opening. Located upstream of
When the throttle valve is at a wider opening, the auxiliary purge port is located downstream of the throttle valve, and the auxiliary purge port is bored in the passage wall of the intake passage of the intake manifold. A temperature opening/closing valve is interposed in the middle of the auxiliary purge passage, and the temperature opening/closing valve senses a temperature representative of the engine and opens/closes the auxiliary purge passage according to the temperature. The fuel vapor has a function of opening the auxiliary purge passage when the temperature is below a predetermined value, and closing the auxiliary purge passage when a temperature representative of the engine is higher than the predetermined value. purge control device.