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Fundamental Study on Wave Pheonomenon in the Exhaust Pipe of an Internal Combustion Engine

Memoirs of the Faculty of Engineering, Yamaguchi University Volume 36 Issue 1 Page 9-16
published_at 1985
KJ00000156569.pdf
[fulltext] 585 KB
Title
内燃機関の排気管内波動に関する基礎的研究
Fundamental Study on Wave Pheonomenon in the Exhaust Pipe of an Internal Combustion Engine
Creators Izumi Haruo
Creators Fukuda Motokazu
Source Identifiers
It is assumed that the back pressure of an engine increases due to the frictional resistance of the gas flow when the length of the exhaust pipe is increased. As a matter of fact, however, the values of the back pressure increase or decrease according to the increase of the pipe length. The cause of the change of the back pressure resulting from the length of the exhaust pipe is presumed to be a wave interference. However, it is very difficult to pinpoint the wave phenomenon in an actual firing engine. Therefore, an air model engine is used in the experiment so that the observation of only one arbitrary time is possible. The piston is devised so that it can be fixed at an arbitrary position and the cylinder volume is kept constant. Compressed air is introduced into the cylinder from the top of the cylinder head, and the exhaust valve is processed so that the valve opening time and the valve clearance can be changed from outside of the engine. By using this model engine, many interesting conclusions on the wave phenomenon are shown in this paper.
Subjects
機械工学 ( Other)
Languages jpn
Resource Type departmental bulletin paper
Publishers 山口大学工学部
Date Issued 1985
File Version Version of Record
Access Rights open access
Relations
[ISSN]0372-7661
[NCID]AN00244228
Schools 工学部