JPS616665U

JPS616665U - Evaporated fuel processing equipment for internal combustion engines

Info

Publication number: JPS616665U
Application number: JP9068784U
Authority: JP
Inventors: 光功寺村
Original assignee: トヨタ自動車株式会社
Priority date: 1984-06-20
Filing date: 1984-06-20
Publication date: 1986-01-16
Also published as: JPH0311405Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案の蒸発燃料処理装置の模式的断面図、第
２図は第１パージボートの断面形状を例示し、第３図は
スロットル開度とパージポート合成員圧との関係を示す
グラフである。１０・・・キャニスタ、１６・・・燃料タンク、２０−
・・・気化器、２２・・・フアート室、３１・・・燃料
蒸気移送−導管、３２・・・第１パージポート、３４・
・・第２パージポート、３６・・・連通路、３８・・・
スロットル弁、４０・・・吸気通路、４２・・・感温弁
。Fig. 1 is a schematic cross-sectional view of the evaporated fuel processing device of the present invention, Fig. 2 illustrates the cross-sectional shape of the first purge boat, and Fig. 3 shows the relationship between the throttle opening and the purge port composite member pressure. It is a graph. 10... Canister, 16... Fuel tank, 20-
... Carburizer, 22... Fat chamber, 31... Fuel vapor transfer-conduit, 32... First purge port, 34...
...Second purge port, 36...Communication path, 38...
Throttle valve, 40... Intake passage, 42... Temperature sensing valve.

Claims

[Scope of Claim for Utility Model Registration] 1. An adsorption device for adsorbing and capturing fuel vapor generated in a fuel storage container, and a fuel vapor purge formed in the main body of the vaporizer and opening into the intake passage of the vaporizer. and a fuel vapor transfer conduit that guides the fuel vapor adsorbed in the adsorption device to the purge port of the vaporizer, and when the engine is not in operation, the adsorption device collects the fuel vapor generated in the fuel storage container. However, in an evaporative fuel processing device for an internal combustion engine that is capable of releasing fuel vapor adsorbed in an adsorption device into an intake air flow by an intake negative pressure when the engine is operating, the purge port is connected to a throttle valve in a fully closed state. a first purge port disposed upstream; and a second purge port disposed downstream of the fully closed throttle valve;
The first purge port and the second purge port communicate with each other through a communication path connected to the fuel vapor transfer conduit, and the second purge port is provided with a temperature-sensitive valve that closes the second purge port when the temperature is high. An evaporative fuel processing device for an internal combustion engine, characterized in that: 2. The evaporated fuel processing device according to claim 1, wherein the opening area of the first purge port is larger than the opening area of the second purge port. 3. The evaporative fuel processing device according to claim 2, wherein the first port has a cross-sectional shape in the form of an elongated hole extending in the axial direction of the intake passage of the carburetor.