JPS5928617U

JPS5928617U - Blow-by gas circulation device for internal combustion engine

Info

Publication number: JPS5928617U
Application number: JP12442082U
Authority: JP
Inventors: 小幡　治征; 健一沼田
Original assignee: トヨタ自動車株式会社
Priority date: 1982-08-19
Filing date: 1982-08-19
Publication date: 1984-02-22

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図は従来のブローバイガス環流装置を備えた過給機
付き電子制御燃料噴射式エンジンの概念図、第２図はエ
ンジン回転数が一定の時の吸気管　　　　−負圧とブロ
ーバイガス流量または発生量との関係を示すグラフ、第
３図は本考案の実施例のブローバイガス環流装置を備え
た過給機付き電子制御燃料噴射式エンジンの模式図であ
る。５２・・・吸気管、５４・・・サージタンク、５８・・
・絞り弁、６４・・・過給機、８４・・・クランクケー
ス、８６・・・動弁室、８８・・・ブローバイガス通路
、９０・・・ブローバイガス環流管、９２・・・ＰＣ■
バルブ、９４・・・補助管路、９６・・・エアブリード
管路、９８・・・空気制御弁、１００・・・弁体、１０
２・・・ダイヤフラム、１１２・・・センシングパイプ
、１１６・・・空気取入管路、１２０・・・空気取出管
。第１図第３図Figure 1 is a conceptual diagram of an electronically controlled fuel injection engine equipped with a conventional blow-by gas recirculation device and a supercharger. Figure 2 shows the intake pipe - negative pressure and blow-by gas flow rate or generation when the engine speed is constant. FIG. 3 is a schematic diagram of an electronically controlled fuel injection engine equipped with a supercharger and equipped with a blow-by gas recirculation device according to an embodiment of the present invention. 52...Intake pipe, 54...Surge tank, 58...
- Throttle valve, 64...Supercharger, 84...Crank case, 86...Valve train chamber, 88...Blowby gas passage, 90...Blowby gas circulation pipe, 92...PC■
Valve, 94... Auxiliary pipe line, 96... Air bleed pipe line, 98... Air control valve, 100... Valve body, 10
2...Diaphragm, 112...Sensing pipe, 116...Air intake pipe, 120...Air takeoff pipe. Figure 1 Figure 3

Claims

[Scope of Claim for Utility Model Registration] A blow-by gas passage located between the crankcase and the engine valve chamber for guiding blow-by gas in the crankcase to the valve chamber, and a blow-by gas passage located between the valve chamber and the throttle valve downstream. A blow-by gas recirculation passage connected between the blow-by gas recirculation passage and the intake passage for guiding the blow-by gas introduced into the valve train chamber to the intake passage downstream of the throttle valve; a crankcase strong side ventilation control valve for controlling the flow rate of recirculated blowby gas in the blowby gas recirculation passage according to the intake negative pressure in the intake passage;
In a blow-by gas recirculation device comprising an auxiliary passage connected between a valve operating chamber and an intake passage upstream of a throttle valve, the auxiliary passage may be connected to an auxiliary passage depending on negative pressure within the valve operating chamber. An air bleed means is provided to introduce bleed air into the
A blowby gas recirculation device for an internal combustion engine, characterized in that the blowby gas recirculation amount is prevented from becoming excessive by maintaining a constant negative pressure in a valve train chamber.