ARPN Journal of Engineering and Applied Sciences最新文献_第4页

A study of swirl flow measurements in a cylinder under an intake flow similar to an engine operating condition using a rotating slit disk valve 使用旋转狭缝盘阀测量与发动机工作状态类似的进气流条件下气缸内的漩涡流量研究

ARPN Journal of Engineering and Applied Sciences Pub Date : 2024-03-18 DOI: 10.59018/012420

{"title":"A study of swirl flow measurements in a cylinder under an intake flow similar to an engine operating condition using a rotating slit disk valve","authors":"","doi":"10.59018/012420","DOIUrl":"https://doi.org/10.59018/012420","url":null,"abstract":"A new swirl measurement system was developed by installing bevel gears and a slit rotary valve into an impulse- type swirl measurement system of the type traditionally used to measure the swirl ratio and flow coefficient of engine intake ports. When operating this new swirl measurement system, it was confirmed that the characteristics of the intake air flow rate to the cylinders were similar to those of a typical operating engine condition. When the valve lift was limited to the cam angle range of 160 to 200 (the valve lift is maximized at a cam angle of 180°), the flow coefficient Cf increased as the cam angle increased under a constant camshaft rotation speed. Moreover, as the rotation speed of the camshaft increased, the Cf value decreased slightly. The swirl ratio NR in the cam angle range of 160 to 200 showed a nearly constant value with an increase of the cam angle at a constant camshaft rotation speed. There were also no significant changes in Cf with an increase in the camshaft rotation speed. NR measurement results while changing the camshaft rotation speed cannot be obtained by the traditional impulse swirl measurement method. NR measurement results with the new swirl measurement system can be used as basic data when calculating spray dispersion characteristics considering the engine rotation speed.","PeriodicalId":38652,"journal":{"name":"ARPN Journal of Engineering and Applied Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140231885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving quality and efficiency: A Six Sigma approach to problem solving in the sewing unit of a garments manufacturer based in Pakistan 提高质量和效率：在巴基斯坦一家服装制造商的缝纫部门采用六西格玛方法解决问题

ARPN Journal of Engineering and Applied Sciences Pub Date : 2024-03-18 DOI: 10.59018/012421

引用次数: 0

Design and fabrication of circular sheet metal shearing machine 设计和制造圆形金属板剪切机

ARPN Journal of Engineering and Applied Sciences Pub Date : 2024-03-18 DOI: 10.59018/012417

引用次数: 0

Integration of dispersed renewable energy generating in power distribution network 将分散的可再生能源发电纳入配电网络

ARPN Journal of Engineering and Applied Sciences Pub Date : 2024-03-18 DOI: 10.59018/012422

引用次数: 0

Effect of traffic speed on noise generated by vehicles motorized in front of the Karya Bhakti Pratiwi Dramaga Bogor hospital 车速对茂物 Karya Bhakti Pratiwi Dramaga 医院前机动车产生的噪音的影响

ARPN Journal of Engineering and Applied Sciences Pub Date : 2024-03-18 DOI: 10.59018/012423

{"title":"Effect of traffic speed on noise generated by vehicles motorized in front of the Karya Bhakti Pratiwi Dramaga Bogor hospital","authors":"","doi":"10.59018/012423","DOIUrl":"https://doi.org/10.59018/012423","url":null,"abstract":"Noise is one of the environmental health problems in big cities. The 1988 WHO report as submitted by the Indonesian Health Service (1995), states that 8% - 12% of the world's population has suffered from the effects of noise. The activity of residents of the city of Bogor a suburb of the capital city of Jakarta in Indonesia is relatively high. Along with the economic development in the city of Bogor, the number of motorized vehicles operating both private and public vehicles has also increased. The purpose of this study was to determine the average speed of motorized vehicles that pass through the Dramaga highway, especially in front of the Karya Baki Pratiwi Hospital, and also to determine the level of noise generated due to the speed of motorized vehicles. The method used in this study is a quantitative method by calculating the number of vehicles and the average speed of vehicles and data analysis. The data taken is vehicle speed data every 15 minutes and noise levels using a Sound Level Meter (SLM). In this study, three SLMs were used which would be placed at three points. The results showed that the speed of the vehicle affects the noise level which is quite significant. The results of data analysis show that the effect of speed on noise is 24%, where the equation is as follows, y=69.505 – 0.395x1 +0, 148x2 + 0.535x3. This equation means that if there is no decrease in motorcycle speed, light vehicle speed, and heavy vehicle speed, the noise level in SLM1 is 69.505 dBA. However, if there is an increase in the number of light vehicles by 0.148, a decrease in the number of motorcycles and large vehicles is obtained by 0.14, the noise level will increase by 0.395 dBA.","PeriodicalId":38652,"journal":{"name":"ARPN Journal of Engineering and Applied Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140231154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance test of a diesel engine using transesterified soybean oil mixed with diesel fuel 使用混有柴油的酯交换大豆油的柴油发动机性能测试

ARPN Journal of Engineering and Applied Sciences Pub Date : 2024-03-18 DOI: 10.59018/012418

引用次数: 0

An analysis of land surface temperature and land-use from sentinel satellite data 利用哨点卫星数据分析地表温度和土地利用情况

ARPN Journal of Engineering and Applied Sciences Pub Date : 2024-03-18 DOI: 10.59018/012419

引用次数: 0

Compositional kriging analysis: A spatial interpolation method for distributions 构成克里金分析：分布的空间插值方法

ARPN Journal of Engineering and Applied Sciences Pub Date : 2024-03-12 DOI: 10.59018/012412

{"title":"Compositional kriging analysis: A spatial interpolation method for distributions","authors":"","doi":"10.59018/012412","DOIUrl":"https://doi.org/10.59018/012412","url":null,"abstract":"Effective development of subsurface petroleum resources relies on the estimation of spatially distributed parameters at undrilled locations. Established geostatistical algorithms based on kriging exist for the estimation of scalar spatial variables such as porosity and permeability. This may not be suitable for the estimation of distributions of properties, such as grain size, whose whole distribution varies spatially. The current conventional approach is to fit a normal or log-normal distribution to the available data, and then to estimate the parameters of the distribution, the mean and standard deviation, spatially using kriging, taking care to consider any dependence between the mean and standard deviation. The assumption that all the grain size distributions can be approximated by a single distribution type is unsatisfactory, since datasets have very different-looking distributions, with variations in skewness, kurtosis, and modality. This paper presents an alternative approach that can handle significant variability in the distribution shape by separating the distribution into bins, like a histogram, and treating these bins as percentages in a composition. Compositional data needs to be mapped onto a simplex to overcome spurious correlations between those components, in addition, spatial estimation methods for compositional data have already been developed. However, the contribution to this field is the mapping of continuous data from distributions into a composition that enables the compositional kriging method to predict distributions at new locations. Moreover, the results showed the prediction distributions in the presence of varying modality, skewness, and kurtosis. Therefore, the grain size datasets in this paper have been working with the confidentiality restrictions so it explains the technique with a dataset of population ages from the US census 2010 for the state of Texas, which shows similar variability in distribution.","PeriodicalId":38652,"journal":{"name":"ARPN Journal of Engineering and Applied Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140250908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Diabetes detection based on Fast Learning Network model 基于快速学习网络模型的糖尿病检测

ARPN Journal of Engineering and Applied Sciences Pub Date : 2024-03-12 DOI: 10.59018/012414

引用次数: 0

The effect of traffic volume on the noise caused by motorized vehicles in front of Karya Bhakti Pratiwi Dramaga Hospital, Bogor 交通流量对茂物 Karya Bhakti Pratiwi Dramaga 医院前机动车辆噪音的影响

ARPN Journal of Engineering and Applied Sciences Pub Date : 2024-03-12 DOI: 10.59018/012413

{"title":"The effect of traffic volume on the noise caused by motorized vehicles in front of Karya Bhakti Pratiwi Dramaga Hospital, Bogor","authors":"","doi":"10.59018/012413","DOIUrl":"https://doi.org/10.59018/012413","url":null,"abstract":"Transportation is the movement or transfer of both people and goods from a place of origin to a destination. In this movement or movement, of course, using transportation facilities in the form of vehicles which in operation cause noises such as engine sound coming out through the muffler or horn. At a certain level, these sounds can still be tolerated in the sense that the consequences they cause are not a nuisance, but at a higher level, the sound generated by these vehicles is already a nuisance or pollution, which is called noise. The activity of the population of Bogor district a suburb of the capital city of Jakarta in Indonesia is relatively high. Along with economic development in the Bogor district, the number of motorized vehicles operating both private and public vehicles has also increased. The purpose of this study was to determine the average volume of motorized vehicles that pass through the Dramaga highway, especially in front of Karya Bhakti Pratiwi Hospital, and also to determine the level of noise generated due to the volume of motorized vehicles. The method used in this study is a quantitative method by calculating the number of vehicles and the average volume of vehicles and data analysis. The data taken is vehicle volume data every 15 minutes and noise levels using a Sound Level Meter (SLM). In this study, three SLMs were used which were placed at three points. The results showed that the volume of vehicles affects the noise level quite significantly. The results of data analysis show that the effect of volume on noise is 12.6%, where the equation is as follows, y = 72.898 - 0.003 x1 + 0.220x2 - 0.054x3. This equation means that if there is no decrease in motorcycle volume, light vehicle volume, and heavy vehicle volume, the noise level in SLM 1 is 72.898 dBA. However, if there is an increase in the number of light vehicles by 0.220, it is found that the number of motorcycles and heavy vehicles is decreased by 0.22, so the noise level will increase by 0.003 dBA.","PeriodicalId":38652,"journal":{"name":"ARPN Journal of Engineering and Applied Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140249550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0