Analysis of Emission formation Processes in a D.I. Diesel Engine by Total In-Cylinder Sampling (2nd Report, Effects of Intake Swirl Ratio and Fuel Injection Timing)

摘要

An experimental study on emission formation processes, such as nitric oxide, particulate and total hydrocarbon, in a small D.I. diesel engine was carried out by using a total in-cylinder sampling technique. The sampling method was composed of rapidly opening a bolwdown valve attached to the bottom of the piston cavity, and quickly transferring most of the in-cylinder contents into a large sampling chamber below the piston.