In order to serve the design, improvement, and manufacture of engine cylinder liners, it is necessary to accurately determine its temperature distribution. This paper presents the calculation of the cylinder liner temperature distribution in a V-12 engine by the finite element method (FEM) written in ANSYS Parametric Design Language (APDL) and verified with experimental results. In this model, the process of heat transfer from the ring group and area of the piston skirt to the cylinder liner wall is considered by using the thermal circuit method. In the study, at engine speeds of 2000 [rev/min] and 1200 [rev/min], the thermal distribution of the cylinder liner is carried out at 50%, 60%, 75%, and 100% of an entire load. The results of the tests show that the theoretical model is highly reliable, with the largest relative error of 5.49%.
Over more than 30 years development of Non-intrusive Load Monitoring (NILM), many technologies were developed from sampling frequency I Hz to hundreds kHz to extract from simple information such as difference power dP, dQ; shape of transient signatures to complex information such as harmonics or electromagnetic interference (EM I). There are now many real NILM systems in residential applications but there is lack of researches to apply NILM to commercial and industrial application. This site uses so much energy in business and production so that analyzing power consumption to optimize their operation is very important to produce competitive products on the market. Unfortunately, it is very difficult to recognize commercial and industrial machine that are composed of many electric elements. This paper provides a new NILM approach to monitor commercial and industrial machines based on basic electrical appliances inside architecture of machine. All power differences dP, dQ, dS are used to analyze and classify basic electrical appliances. Adaptive filter CUSUM is used to improve removing noise in preprocessing phase of the NILM system. Finally, Field Program Gate Array (FPGA) is discussed to implement our NILM system.
Internal combustion engines are currently so well-optimized that enhancing their performance is a prohibitively expensive endeavor. The success of the engine simulation approach is determined by the accuracy of the heat transfer model. The purpose of these models is to figure out how much heat is transferred from the combustion gases to the cylinder walls. To see which of these relationships may best explain the experimental data for internal combustion engines utilizing various fuel mixtures. The cylinder liner temperature distribution of a diesel engine running on M10, E10, and B10 fuels is presented in this research using the Hohenberg correlation. The results demonstrate that when alcohol is added to mineral diesel fuel, the maximum temperature of the cylinder liner rises by 5.4 percent, 3.7 percent, and 2.23 percent, respectively, allowing the engine to run safely with diesel-alcohol dual fuel.
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