From the flow analysis of the silencer for 8 kW diesel generators, the following results were obtained. For silencer-1, it was confirmed that the holes formed at the inlet-side portion connect into the exhaust pipe in the chamber. The exhaust pipe installed inside silencer-1 was integrally connected through the holes in the chamber. As a result, it was confirmed that the pressure inside the chamber was kept stable. It was confirmed that the pressure loss generated inside an absorptive type silencer such as silencer-2 was small. The differential pressure of the inlet-outlet of silencer-1 and silencer-2 was confirmed to be 494 Pa at 15 m/s, 859 Pa at 20 m/s, 1326 Pa at 25 m/s, and 1911 Pa at 30 m/s.

Numerical analysis of the Internal Flow of 8kW Grade Diesel Generator Muffler

Inspection of vehicle systems is regularly performed by the state to ensure the emission status and the safety of vehicles. Thereby, the safety and quality of life can be improved by reducing green-house gases and fine dust, which are the main causes of vehicle defects and air pollution. This study analyzed the soot measuring probes used in the free acceleration mode method, at no-load condition, looking at the efficiency of a probe to measure soot emissions from diesel vehicles. In this study, a technique that can improve the inhalation efficiency of the probe over the (a) probes and the improved (b) probes was applied to probes (c). Probe (c) involves a structure designed close to the center of the circumference of the exhaust pipe. Results showed that the suction efficiency was improved by adding a variable center unit.

A Study on the Performance of Soot Probe of Diesel Vehicles using Free Acceleration Mode Method

Improvement of Soot Probe Efficiency for Automotive Emission Measurement

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

A Study on Reliability Improvement of BLDC Motor for Combat Vehicle in High Temperature Environment

A Design for Water Cooling of a Marine Diesel Engine with Verification of Improvement

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A Design for Water Cooling of a Marine Diesel Engine with Verification of Improvement