Improving Diesel Car Smoke Measurement Probe Performance of Diesel Cars Using Hole Position

Car inspection systems are regularly carried out by the state to ensure the safety and emission status of cars,thereby improving the safety and quality of life by reducing fine dust and greenhouse gases that are the mainculprits of vehicle defects and air pollution. These automobile inspections are largely divided into either regularor comprehensive inspections. This study analyzed the smoke measuring probes used in the lug - down 3 mode.
In the previously issued paper "Improvement of Soot Probe Efficiency for Automotive Emission Measurement,"an improved smoke measurement probe(B) improved on the problems that arise from the current smokemeasurement probe (A). In this study, a technique that can improve the probe's inhalation efficiency over theimproved (B) probes was applied to probes (C). Probe (C) involves a structure designed close to the center ofthe circumference of the exhaust pipe, and the suction efficiency was improved by adding a variable center unit.