JPS6119631U

JPS6119631U - Intake system for two-valve internal combustion engine

Info

Publication number: JPS6119631U
Application number: JP10441584U
Authority: JP
Inventors: 誠之助原; 泰郎松本; 和幸三井所
Original assignee: 日産自動車株式会社
Priority date: 1984-07-12
Filing date: 1984-07-12
Publication date: 1986-02-04

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

【図面の簡単な説明】第１図は本考案の１実施例を示す概略系統図、第２図は
同上の吸気充填効率を示すグラフ、第３図は従来の２つ
の吸気弁を備えた吸気装置の横断面図、第４図は本考案
の実施例若しくは第３図に示す従来例の２つの吸気弁及
び排気弁の開閉時期特性を示すグラフ、第５図は前記従
来例の吸気充填効率特性を示すグラフである。１０・・・内燃機関、１１・・・気筒、１２・・・主吸
気弁、１３・・・副吸気弁、１６・・・第１遮断弁、１
７・・・主吸気通路、１８・・・副吸気通路、１９・・
・コレクタ、２０・・・第２遮断弁、２１・・・連通路
、２４，２５・・・アクチュエータ、２６・・・制御装
置、２７・・・機関運転状態検出装置。[Brief Description of the Drawings] Fig. 1 is a schematic system diagram showing one embodiment of the present invention, Fig. 2 is a graph showing the intake filling efficiency of the same as above, and Fig. 3 is a conventional intake valve equipped with two intake valves. A cross-sectional view of the device, FIG. 4 is a graph showing the opening/closing timing characteristics of the two intake valves and exhaust valve of the embodiment of the present invention or the conventional example shown in FIG. 3, and FIG. 5 is the intake air filling efficiency of the conventional example. It is a graph showing characteristics. DESCRIPTION OF SYMBOLS 10... Internal combustion engine, 11... Cylinder, 12... Main intake valve, 13... Sub-intake valve, 16... First shutoff valve, 1
7...Main intake passage, 18...Sub-intake passage, 19...
- Collector, 20... Second shutoff valve, 21... Communication path, 24, 25... Actuator, 26... Control device, 27... Engine operating state detection device.

Claims

[Claims for Utility Model Registration] One cylinder is provided with two main and auxiliary intake valves, a main intake passage that communicates the collector and the cylinder via the main intake valve, a first shutoff valve, and the auxiliary intake valve. an intake two-valve internal combustion engine, comprising: a secondary intake passage that communicates between the collector and the cylinder via a second intake passage that blocks communication between the main and auxiliary intake passages and the collector;
A third intake passage is provided which connects the main and auxiliary intake passages to each other at the end on the collector side, and communicates the vicinity upstream of the first cutoff valve of the auxiliary intake passage with the collector. An intake system for an intake two-valve internal combustion engine, characterized in that: