JPS59107012U

JPS59107012U - Blow-by gas reduction device for internal combustion engine

Info

Publication number: JPS59107012U
Application number: JP18183U
Authority: JP
Inventors: 西村周一; 大城義孝
Original assignee: 日産自動車株式会社
Priority date: 1983-01-05
Filing date: 1983-01-05
Publication date: 1984-07-19

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]

第１図は従来のブローバイガス還元装置の一部断面正面
図、第２図は第１図のブローバイガス制御弁の拡大断面
図、第３図はこの考案の第１実施例を示す一部断面正面
図、第４図は第３図のブローバイガス制御弁の拡大断面
図、第５図は第３図の一方向弁の拡大断面図、第６図は
この考案の第２実施例を示す一部断面正面図である。２７・・・・・・第１シリンダ群、２８・・・・・・第
２シリンダ群、２９・・・・・・クランク室、５０・・
・・・・吸気通路（通路）、５２・・・・・・絞り弁、
５９・・・・・・第１ブローバイガス通路、６０・・・
・・・第２ブローバイガス通路、６３・・・・・・ブロ
ーバイガス制御弁（ブローバイガスコントロールバルフ
）、６５．　７３・・・・・・ブローバイガス連通路、
６６・・・・・・一方向弁。Fig. 1 is a partial cross-sectional front view of a conventional blow-by gas reduction device, Fig. 2 is an enlarged cross-sectional view of the blow-by gas control valve shown in Fig. 1, and Fig. 3 is a partial cross-section showing the first embodiment of this invention. 4 is an enlarged sectional view of the blow-by gas control valve of FIG. 3, FIG. 5 is an enlarged sectional view of the one-way valve of FIG. 3, and FIG. 6 is an enlarged sectional view of the one-way valve of FIG. 3. It is a partial cross-sectional front view. 27...First cylinder group, 28...Second cylinder group, 29...Crank chamber, 50...
... Intake passage (passage), 52 ... Throttle valve,
59...First blow-by gas passage, 60...
...Second blowby gas passage, 63...Blowby gas control valve (blowby gas control valve), 65. 73...Blow-by gas communication path,
66...One-way valve.

Claims

[Scope of utility model registration request]

The first blow-by gas passage is arranged between the first cylinder group and the second cylinder group, and the first blow-by gas passage formed on the first cylinder group side connects the crank chamber and the intake passage on the upstream side of the throttle valve. The second blow-by gas passage communicates the crank chamber with the intake passage downstream of the throttle valve, and the second blow-by gas passage is provided with a blow-by gas control valve whose opening area decreases in response to a pressure drop downstream of the throttle valve. In the blow-by gas return device for an internal combustion engine, a blow-by gas communication passage is provided that communicates the first blow-by gas passage or the intake passage upstream of the throttle valve with the second blow-by gas passage. A blow-by gas reducing device for an internal combustion engine, characterized in that a one-way valve is provided that only allows blow-by gas to flow in from a blow-by gas passage.