The Tracer Gas Method of Determining the Charging Efficiency of Two-stroke-cycle Diesel Engines

Download or read book The Tracer Gas Method of Determining the Charging Efficiency of Two-stroke-cycle Diesel Engines written by P. H. Schweitzer and published by . This book was released on 1942 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: A convenient method has been developed for determining the scavenging efficiency or the charging efficiency of two-stroke-cycle engines. The method consists of introducing a suitable tracer gas into the inlet air of the running engine and measuring chemically its concentration both in the inlet and exhaust gas. Monomethylamine CH3NH2 was found suitable for the purpose as it burns almost completely during combustion, whereas the "short-circuited" portion does not burn at all and can be determined quantitatively in the exhaust. The method was tested both on four-stroke and on two-stroke engines and is considered accurate within 1 percent.