ID | 15665 |
JaLCDOI | |
Sort Key | 3
|
フルテキストURL | |
著者 |
Nishiwaki Kazuie
Department of Mechanical Engineering
Shimamoto Yuzuru
Department of Mechanical Engineering
|
抄録 | This paper covers the work done in an attempt to reduce exhaust noise level without the decay of brake mean effective pressure of a two-cylinder two-stroke cycle engine, by means of an exhaust manifold having a throttle plate in its junction. The data are shown for various dimensions and configurations of the manifold and the discussion is given on the effect of exhaust throttling on exhaust noise level and engine performance. The principal results obtained by this study are as follows: (1) The lower limit of the throttle area was about onethird of a cross-sectional area of the manifold from the view point of brake mean effective pressure. (2) Within this limit brake mean effective pressure was scarcely influenced by throttling under the condition where a number of pressure oscillation related to the pulsation effect during an interval between discharges was less than 1.7. (3) A reduction in exhaust noise level attained was 8 dB(A) at higher engine speeds. (4) The junction angle of the manifold gave little significance to exhaust noise level and brake mean effective pressure.
|
出版物タイトル |
Memoirs of the School of Engineering, Okayama University
|
発行日 | 1974-12-25
|
巻 | 9巻
|
号 | 2号
|
出版者 | 岡山大学工学部
|
出版者(別表記) | School of Engineering, Okayama University
|
開始ページ | 35
|
終了ページ | 45
|
ISSN | 0475-0071
|
NCID | AA00733903
|
資料タイプ |
紀要論文
|
OAI-PMH Set |
岡山大学
|
言語 |
英語
|
論文のバージョン | publisher
|
NAID | |
Eprints Journal Name | mfe
|