JPS58193017U

JPS58193017U - Internal combustion engine intake noise prevention device

Info

Publication number: JPS58193017U
Application number: JP9145182U
Authority: JP
Inventors: 秀一中村
Original assignee: 日産ディーゼル工業株式会社
Priority date: 1982-06-21
Filing date: 1982-06-21
Publication date: 1983-12-22
Also published as: JPS6318755Y2

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 drawings]

第１図は従来例を示す略本構成図、第２図は本考案の１
実施例を示す略本平面図、第３図は同上実施例の要部拡
大断面図、第４図は本考案の第２実施例を示す要部断面
図、第５図は本考案の第３実施例を示す略本平面図、第
６図は第５図中Ｉ−■矢視図、第７図は同上実施例の如
部断面図、第８図は本考案の第４実施例を示す略本平面
図、第９図は第８図中■−■矢視図、第１０図は本考案
の第５実施例を示す略本平面図、第１１図は本考案の第
６実施例を示す要部構成図、第１２図は本考案の第７実
施例を示す略本平面図、第１３図は第１２図中ｍ−ｍ矢
視図を宗す。１２・・・・・・吸気マニホルド、１４ａ・・・・・・
接続部、１４ｂ・・・・・・共鳴管、１５・・・・・・
ヘルムホルツ共鳴器、１６・・・・・・共鳴管、１６Ａ
・・・・・・固定管、１６Ｂ・・・・・・可動管、１７
・・・・・・共鳴容器、１７Ａ・・・・・・固定容器、
１７Ｂ・・・・・・可動容器、２６・・・・・・弾性管
。Figure 1 is a schematic configuration diagram showing a conventional example, and Figure 2 is a diagram of the present invention.
FIG. 3 is an enlarged cross-sectional view of the main parts of the same embodiment, FIG. 4 is a cross-sectional view of the main parts showing the second embodiment of the present invention, and FIG. 5 is the third embodiment of the present invention. FIG. 6 is a schematic plan view showing the embodiment, FIG. 6 is a view taken along arrow I-■ in FIG. 5, FIG. 7 is a cross-sectional view of the same embodiment as above, and FIG. FIG. 9 is a schematic plan view showing the ■-■ arrow in FIG. 8, FIG. 10 is a schematic plan view showing the fifth embodiment of the present invention, and FIG. 11 is a schematic plan view showing the sixth embodiment of the present invention. FIG. 12 is a schematic plan view showing a seventh embodiment of the present invention, and FIG. 13 is a view taken along the line mm in FIG. 12. 12...Intake manifold, 14a...
Connection part, 14b... Resonance tube, 15...
Helmholtz resonator, 16...Resonance tube, 16A
...Fixed pipe, 16B...Movable pipe, 17
... Resonance container, 17A ... Fixed container,
17B...Movable container, 26...Elastic tube.

Claims

[Scope of utility model registration request]

In an internal combustion engine having a resonant supercharging type intake passage, a Helmholtz resonator whose resonant frequency increases as the engine speed increases is connected in the middle of the engine intake passage, and the intake passage downstream from this connection is resonantly supercharged. An intake noise prevention device for an internal combustion engine, characterized in that the resonant frequency of the Helmholtz resonator is substantially equal to the intake vibration frequency in the resonant supercharging passage.