JPS61169237U

JPS61169237U -

Info

Publication number: JPS61169237U
Application number: JP5207285U
Authority: JP
Priority date: 1985-04-10
Filing date: 1985-04-10
Publication date: 1986-10-20

Description

[Brief explanation of the drawing]

第１図は本考案の実施例の全体構成を示す平面
図、第２図は同上実施例における容積室部分の斜
面図、第３図は同上容積室部分の拡大平面図、第
４図、第５図は第３図のＡ―Ａに沿う、同上容積
室部分の拡大縦断面で、第４図は円錐バルブの閉
塞時を、第５図は同上円錐バルブの開放時をそれ
ぞれ示す。第６図は同上実施例における円錐バル
ブの制御方法を示すグラフ、第７図は同上実施例
の機関速度と体積効率との関係を示すグラフであ
る。１……ガソリン機関、４……サージタンク、５
……エアクリーナ、６……共通吸気通路、８……
容積室、９……共通吸気通路出口、１０ａ，１０
ｂ……第１吸気通路、１０ｃ，１０ｄ……第１吸
気通路入口、１１ａ，１１ｂ……第２吸気通路、
１１ｃ，１１ｄ……第２吸気通路入口、１２……
円錐バルブ。 Fig. 1 is a plan view showing the overall configuration of the embodiment of the present invention, Fig. 2 is a perspective view of the volume chamber portion in the same embodiment, Fig. 3 is an enlarged plan view of the volume chamber part in the above embodiment, Figs. FIG. 5 is an enlarged vertical cross-section of the volume chamber section taken along line AA in FIG. 3, FIG. 4 shows the conical valve when it is closed, and FIG. 5 shows the conical valve when it is open. FIG. 6 is a graph showing the control method of the conical valve in the above embodiment, and FIG. 7 is a graph showing the relationship between engine speed and volumetric efficiency in the above embodiment. 1...Gasoline engine, 4...Surge tank, 5
...Air cleaner, 6...Common intake passage, 8...
Volume chamber, 9... Common intake passage outlet, 10a, 10
b...first intake passage, 10c, 10d...first intake passage entrance, 11a, 11b...second intake passage,
11c, 11d...Second intake passage entrance, 12...
conical valve.

Claims

[Scope of utility model registration request]

The common intake passage on the downstream side of the air cleaner is branched into two first intake passages with long pipe lengths and two second intake passages with shorter pipe lengths than the first intake passages. A surge tank divided into two chambers communicating with these intake passages is provided downstream of the intake passages, and one set of the first and second intake passages is opened in one chamber of the surge tank. In the intake system for a multi-cylinder internal combustion engine, the other set of the first and second intake passages is opened in the other chamber of the multi-cylinder internal combustion engine. A volume chamber having a predetermined volume is provided in which the outlet of the common intake passage and the inlet of each of the first and second intake passages open, respectively, and the volume chamber has a first opening and a second opening for opening and closing the entrance of each of the second intake passages.
An intake system for a multi-cylinder internal combustion engine characterized by having two common conical valves.