Experimental Study of Heat Transfer Coefficient in a Spark Ignition Engine. 2nd Report. Examination of arrangement of heat transfer coefficient under motored conditions

Autor:	Hiroshi Tajima, Hidenori Tasaka
Rok vydání:	1997
Předmět:	Thermal efficiency Materials science Internal combustion engine Gas velocity Heat flux Mechanical Engineering Spark-ignition engine Thermal Thermodynamics Mechanics Heat transfer coefficient Condensed Matter Physics Compression (physics)
Zdroj:	TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B. 63:2228-2232
ISSN:	1884-8346 0387-5016
DOI:	10.1299/kikaib.63.2228
Popis:	Many studies have been conducted on heat flux or the heat transfer coefficient in an engine in order to increase thermal efficiency and to solve thermal loading problems. The authors showed the relation between Re number and Nu number at near TDC under the motored condition and it was found to be subjected to the equation Nu=a+b·Ren. To examine whether the formula could be adapted to compression and expansion strokes, the formula was compared to the experimental data during compression and expansion strokes. Also, the value of the authors' formula was compared to that of usual formula. The authors' formula is found to agree well with the experimental data, and it was confirmed to predict approximate the heat transfer coefficient in an engine.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::21ec671c4b41975e23053d1f0c4f38d6 https://doi.org/10.1299/kikaib.63.2228 Zobrazit plný text záznamu