One-Dimensional Gas Flow Analysis of the Intake and Exhaust System of a Single Cylinder Diesel Engine
| Autor: | Kyeong-Ju Kong, Kyong-Hyon Kim |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
intake and exhaust system
one-dimensional numerical analysis Flow (psychology) Ocean Engineering 02 engineering and technology Diesel engine Automotive engineering Cylinder (engine) law.invention lcsh:Oceanography mass flow rate 0203 mechanical engineering Method of characteristics lcsh:VM1-989 law Mass flow rate Coupling (piping) lcsh:GC1-1581 Reliability (statistics) Water Science and Technology Civil and Structural Engineering single cylinder diesel engine lcsh:Naval architecture. Shipbuilding. Marine engineering 021001 nanoscience & nanotechnology Discharge coefficient 020303 mechanical engineering & transports Environmental science 0210 nano-technology method of characteristics |
| Zdroj: | Journal of Marine Science and Engineering, Vol 8, Iss 1036, p 1036 (2020) Journal of Marine Science and Engineering Volume 8 Issue 12 |
| ISSN: | 2077-1312 |
| Popis: | In order to design a diesel engine system and to predict its performance, it is necessary to analyze the gas flow of the intake and exhaust system. Gas flow analysis in a three-dimensional (3D) format needs a high-resolution workstation and an enormous amount of time for analysis. Calculation using the method of characteristics (MOC), which is a gas flow analysis in a one-dimensional (1D) format, has a fast calculation time and can be analyzed with a low-resolution workstation. However, there is a problem with poor accuracy in certain areas. It was assumed that the reason was that 1D could not implement the shape. The error that occurs in the shape of the bent pipe used in the intake and exhaust ports of the diesel engine was analyzed and to find a solution to the low accuracy, the results of the experiment and 1D analysis were compared. The discharge coefficient was calculated using the average mass flow rate, and as a result of applying it, the accuracy was improved for the maximum negative pressure by 0.56&ndash 1.93% and the maximum pressure by 3.11&ndash 7.86% among the intake pipe pressure results. The difference in phase of the exhaust pipe pressure did not improve. It is considered as a limitation of 1D analysis that does not improve even by applying the discharge coefficient. In the future, we intend to implement a bent pipe that cannot be realized in 1D using a 3D format and to prepare a method to supplement the reliability by using 1D&ndash 3D coupling. |
| Databáze: | OpenAIRE |
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