Author : Cearcy D. Miller
Release : 1946
Genre : Combustion
Kind :
Book Rating : /5 ( reviews)

GET EBOOK

Analysis of Spark-ignition Engine Knock as Seen in Photographs Taken at 200,000 Frames a Second - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Analysis of Spark-ignition Engine Knock as Seen in Photographs Taken at 200,000 Frames a Second write by Cearcy D. Miller. This book was released on 1946. Analysis of Spark-ignition Engine Knock as Seen in Photographs Taken at 200,000 Frames a Second available in PDF, EPUB and Kindle. A motion-picture of the development of knock in a spark-ignition engine is presented, which consists of 20 photographs taken at intervals of 5 microseconds, or at a rate of 200,000 photographs a second, with an equivalent wide-open exposure time of 6.4 microseconds for each photograph. A motion picture of a complete combustion process, including the development of knock, taken at the rate of 40,000 photographs a second is also presented to assist the reader in orienting the photographs of the knock development taken at 200,000 frames per second are analyzed and the conclusion is made that the type of knock in the spark-ignition engine involving violent gas vibration originates as a self-propagating disturbance starting at a point in the burning or autoigniting gases and spreading out from that point through the incompletely burned gases at a rate as high as 6800 feet per second, or about twice the speed of sound in the burned gases. Apparent formation of free carbon particles in both the burning and the burned gas is observed within 10 microseconds after passage of the knock disturbance through the gases.