A Study of the Cold Smoke from a Direct Injection Diesel Engine ?The Effect of EGR Methods?

摘要

One method of improving the cold starting characteristics in a direct injection diesel engine, is that named TSCE (Two Stage Combustion EGR). It prevents the induction of a fresh air to half the cylinders of the engine, instead of it using the exhaust gas from the already operating cylinders. This quickens the rise in intake gas temperature of the second stage cylinders, shortens the starting time, and causes a stable combustion at the earlist possible time. As a result, Hydrocarbon mass emission and Aldehide concentration, the main components exhaust pollution, were reduced to 1/3 of the amount produced by the usual method of operation, when air, oil and water temperatures ?10 to ?12℃