JPS60120260U

JPS60120260U - Fuel evaporative gas emission control device

Info

Publication number: JPS60120260U
Application number: JP640284U
Authority: JP
Inventors: 衛吉岡; 泉谷　尚秀; 内谷　信喜
Original assignee: トヨタ自動車株式会社
Priority date: 1984-01-23
Filing date: 1984-01-23
Publication date: 1985-08-14

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

図面は本考案の実施例の構成図である。１４・・・・・・スロットル弁、１６・・・・・・吸気
通路、１８・・・・・・第１のポート、２０・・・・・
・第２のポート、２２・・・・・・パージポート、２４
・・・・・・チャコールキャニスタ、３４・・・・・・
パージ通路、４０・・・・・・負圧式制御弁、４２・・
・・・・弁体、５０・・・・・・第１の室、５２・・・
・・・第１のダイヤフラム、５８・・・・・・第２の室
、６６・・・・・・第２のダイヤフラム、７０・・・・
・・フック、７２・・・・・・フランジ、７８・・・・
・・オリフィス。The drawing is a block diagram of an embodiment of the present invention. 14... Throttle valve, 16... Intake passage, 18... First port, 20...
・Second port, 22...Purge port, 24
...charcoal canister, 34...
Purge passage, 40... Negative pressure control valve, 42...
...Valve body, 50...First chamber, 52...
...First diaphragm, 58...Second chamber, 66...Second diaphragm, 70...
...Hook, 72...Flange, 78...
...orifice.

Claims

[Scope of utility model registration request]

An adsorbent container that stores fuel evaporative gas in a vehicle, a purge port provided downstream of the throttle valve in the intake passage, a purge passage that connects the adsorbent container and the purge port, and when the throttle valve is at the idling opening. A first port located upstream from the throttle valve and downstream from the throttle valve when the throttle valve is at a non-idling opening, a second port for extracting intake pipe negative pressure, and a purge port. The control valve includes a valve body for opening and closing the purge passage, a first chamber connected to the first port, and an intake pipe connected to the first chamber from the first port. A first diaphragm that moves the valve body in the opening direction when negative pressure is supplied;
A second chamber is connected to a port of the second chamber via an orifice, and when a negative pressure of a predetermined value or more is supplied to this second chamber, the second chamber moves toward the second chamber, and during this movement, the first A fuel evaporative gas emission suppressing device, comprising a second diaphragm that guides the diaphragm in the opening direction of the valve body.