JPS601929U - low noise engine - Google Patents
low noise engineInfo
- Publication number
- JPS601929U JPS601929U JP9369983U JP9369983U JPS601929U JP S601929 U JPS601929 U JP S601929U JP 9369983 U JP9369983 U JP 9369983U JP 9369983 U JP9369983 U JP 9369983U JP S601929 U JPS601929 U JP S601929U
- Authority
- JP
- Japan
- Prior art keywords
- crankshaft
- crank pulley
- communication passage
- front cover
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Pulleys (AREA)
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
第１図は、従来のエンジンの一部縦断面図、第２図は、
本考案の第１の実施例に係る低騒音エンジンの一部縦断
面図、第３図は、第２図のフロントカバーの斜視図、第
４図は、本考案の第２の実施例に係る低騒音エンジンの
フロントカバーの斜視図である。
７・・・・・・シリンダブロック、８・・・・・・タイ
ミングギヤ、９・・・・・・タイミングベルト、１０・
・・・・・フロントカバー、１１・・・・・・クランク
軸貫通孔、１２・・・・・・クランク軸、１４−−−−
−−クランクプーリ、１５・・・・・・空洞、１６・・
・・・・連通路（連通路）、１７・・・・・・連通孔（
連通路）、１８・・・・・・吸音材、２３・・・・・・
二重構造部分。Fig. 1 is a partial vertical sectional view of a conventional engine, and Fig. 2 is a partial longitudinal sectional view of a conventional engine.
FIG. 3 is a perspective view of the front cover of FIG. 2, and FIG. 4 is a partial longitudinal sectional view of a low-noise engine according to the first embodiment of the present invention. FIG. 3 is a perspective view of the front cover of the low-noise engine. 7... Cylinder block, 8... Timing gear, 9... Timing belt, 10...
...Front cover, 11...Crankshaft through hole, 12...Crankshaft, 14---
--Crank pulley, 15...Cavity, 16...
...Communication path (communication path), 17...Communication hole (
communication path), 18... sound absorbing material, 23...
Double structure part.
Claims (1)
イミングベルトを覆うフロントカバーが取り付けられ、
該フロントカバーにはクランク軸貫通孔が穿設されそお
り、該クランク軸貫通孔よりクランク軸が突出し、該ク
ランク軸の先端にはクランクプーリが取り付けられてい
るエンジンであって、前記フロントカバーのうち該クラ
ンクプーリと相対向する部分は二重構造とされ、該二重
構造部分において、各々の板の間には、連通路を介して
のみ大気と連通ずる空洞が設けられており、該空洞には
、吸音材が充填されており、前記連通路はその有効流路
断面積が絞られ、かつ、該連通路は前記クランクプーリ
の周縁と相対向する位置に設けられていることを特徴と
する低騒音エンジン。, A front cover is attached to the cylinder block to cover the timing gear and timing belt.
The front cover is provided with a crankshaft through-hole, the crankshaft protrudes from the crankshaft through-hole, and a crank pulley is attached to the tip of the crankshaft. The part facing the crank pulley has a double structure, and in the double structure part, a cavity is provided between each plate, which communicates with the atmosphere only through a communication path. , wherein the communication passage is filled with a sound absorbing material, the effective flow cross-sectional area of the communication passage is narrowed, and the communication passage is provided at a position opposite to the peripheral edge of the crank pulley. noise engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9369983U JPS601929U (en) | 1983-06-17 | 1983-06-17 | low noise engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9369983U JPS601929U (en) | 1983-06-17 | 1983-06-17 | low noise engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS601929U true JPS601929U (en) | 1985-01-09 |
Family
ID=30224684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9369983U Pending JPS601929U (en) | 1983-06-17 | 1983-06-17 | low noise engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS601929U (en) |
-
1983
- 1983-06-17 JP JP9369983U patent/JPS601929U/en active Pending
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