Combustion Engines最新文献

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Influence of oil service life on selected performance parameters of an aircraft piston engine 油品使用寿命对某型航空活塞发动机性能参数的影响
Combustion Engines Pub Date : 2023-07-05 DOI: 10.19206/ce-168334
Michał Trendak, J. Czarnigowski
{"title":"Influence of oil service life on selected performance parameters of an aircraft piston engine","authors":"Michał Trendak, J. Czarnigowski","doi":"10.19206/ce-168334","DOIUrl":"https://doi.org/10.19206/ce-168334","url":null,"abstract":"This article presents an analysis of the influence of oil service life on the performance parameters of an aircraft piston engine lubrication system used in an ultralight aircraft. The ageing of oil between oil changes causes a change in its parameters (such as density, viscosity ...). These parameters have a strong influence on the level of protection of the lubricated components. Currently, in aircraft, oil changes are carried out according to a time schedule - oil is changed every fixed period (residual life) regardless of its actual condition. The task of this article is to test the possibility of indirect assessment of oil condition based on analysis of changes in selected parameters of engine lubrication system operation during normal operation. The oil warm-up speed during the pre-start procedure and the dependence of oil pressure on engine speed were assumed for the analysis. The study was conducted on an ultralight rotorcraft during normal operation. Selected first daily flights directly after oil change, and after 17, 32, 50, 66 hours of operation were analysed. It was shown that the warm-up rate changes in the samples analyzed, but that this change may also be due to factors other than oil operating time. In the case of the oil pressure vs. speed characteristics, different characteristics were shown for different operating time, but no specific dependencies were found.","PeriodicalId":34258,"journal":{"name":"Combustion Engines","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86193503","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
Adoption of the F-statistic of Fisher-Snedecor distribution to analyze importance of impact of modifications of injector opening pressure of a compression ignition engine on specific enthalpy value of exhaust gas flow 采用Fisher-Snedecor分布的f统计量,分析了压缩点火发动机喷油器开孔压力变化对排气流量比焓值影响的重要性
Combustion Engines Pub Date : 2023-07-05 DOI: 10.19206/ce-168520
P. Puzdrowska
{"title":"Adoption of the F-statistic of Fisher-Snedecor distribution to analyze importance of impact of modifications of injector opening pressure of a compression ignition engine on specific enthalpy value of exhaust gas flow","authors":"P. Puzdrowska","doi":"10.19206/ce-168520","DOIUrl":"https://doi.org/10.19206/ce-168520","url":null,"abstract":"This article analyzes the effect of modifications of injector opening pressure on the operating values of a compression ignition engine, including the temperature of the fumes. A program of experimental investigation is described, considering the available test stand and measurement capabilities. The structure of the test stand on which the experimental measurements were conducted is presented. The method of introducing real modifications of injector opening pressure to the existing test engine was characterized. It was proposed to use F statistic of Fisher-Snedecor (F-S) distribution to evaluate the importance of the impact of modifications of injector opening pressure on the specific enthalpy of the flue gas flow. Qualitative and statistical studies of the results achieved from the measurements were carried out. The specific enthalpy of the fumes for a single cycle of the compression ignition engine, determined from the course of rapidly variable flue gas temperature, was analyzed. The results of these studies are presented and the usable adoption of this type of assessment in parametric diagnosing of compression ignition engines is discussed.","PeriodicalId":34258,"journal":{"name":"Combustion Engines","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86721763","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
Minimizing indoor infection risks with automotive nanofiltration and with laminar vertical flow 通过汽车纳滤和层流垂直流降低室内感染风险
Combustion Engines Pub Date : 2023-07-03 DOI: 10.19206/ce-168141
J. Czerwiński, A. Mayer, Jörg Mayer, H. Burtscher, T. Lutz, Rainer Mayer, B. Rothen‐Rutishauser, Joachim Frey, Christian Lämmle, Tobias Rüggeberg, P. Specht
{"title":"Minimizing indoor infection risks with automotive nanofiltration and with laminar vertical flow","authors":"J. Czerwiński, A. Mayer, Jörg Mayer, H. Burtscher, T. Lutz, Rainer Mayer, B. Rothen‐Rutishauser, Joachim Frey, Christian Lämmle, Tobias Rüggeberg, P. Specht","doi":"10.19206/ce-168141","DOIUrl":"https://doi.org/10.19206/ce-168141","url":null,"abstract":"The knowledge about nanoaerosols, their potential health effects, their measurement, limitation and administrative-legal treatment has been developed in the last 3 decades in connection with the exhaust gas cleaning of the combustion engines. Nanofiltration, which has thus become known, almost completely eliminates nanoparticles with filters of high durability, high specific filtration areas, and reasonable costs. On the occasion of the Covid pandemic, NanoCleanAir experimentally proved that the viruses in an automotive filter substrate are separated as well as the combustion particles and are also deactivated. To minimize cross exchange of infectious aerosol, new attention must be paid to flow management in ventilated spaces. Digitized flow analysis has also received significant inspiration from engine technology in the past. This paper provides information on some basic investigations and gives valuable advice based on the experimental and numerical results of a retrofitted classroom.","PeriodicalId":34258,"journal":{"name":"Combustion Engines","volume":"76 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74817081","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
Research on the effect of low-sulphur marine fuels on the dynamic characteristics of a CI engine 船用低硫燃料对内燃机动力特性影响的研究
Combustion Engines Pub Date : 2023-07-03 DOI: 10.19206/ce-168390
Z. Korczewski
{"title":"Research on the effect of low-sulphur marine fuels on the dynamic characteristics of a CI engine","authors":"Z. Korczewski","doi":"10.19206/ce-168390","DOIUrl":"https://doi.org/10.19206/ce-168390","url":null,"abstract":"The implementation of low-sulphur, so-called modified marine fuels into operation requires prior laboratory engine tests to assess the energy, emission and structural effects of their usage. This type of research are carried out on the test bed of a diesel engine as a small-scale physical model that reproduces the adequate design and process (parametric) features of a full-size marine engine. Their key stage is to determine the energy characteristics of the engine in the steady state of operation determined on the basis of the analysis of the developed indicator diagram and the dynamic characteristics of the transient processes from idling to the reference steady state of load - and vice versa. In this way, the basic diagnostic parameters of the fuel usable quality are determined: the rate of pressure increase in the cylinder and the average deceleration of the engine crankshaft within the strenuous transient process. This article presents representative results of this type of research carried out on six different, low-sulphur marine fuels used to feed marine engines.","PeriodicalId":34258,"journal":{"name":"Combustion Engines","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89308095","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
Repair methodology of a piezoelectric injector utilizing components obtained from selective decomposition 利用选择性分解获得的元件的压电喷射器的修复方法
Combustion Engines Pub Date : 2023-07-01 DOI: 10.19206/ce-167428
T. Stoeck
{"title":"Repair methodology of a piezoelectric injector utilizing components obtained from selective decomposition","authors":"T. Stoeck","doi":"10.19206/ce-167428","DOIUrl":"https://doi.org/10.19206/ce-167428","url":null,"abstract":"The paper presents an example of regeneration of a common rail piezoelectric fuel injector, which was carried out with using used parts. The most important stages of maintenance activities are listed, as well as the types of diagnostic tests performed on separate test benches. The obtained results indicate that this process can be effectively carried out with existing technological problems and lack of support from the manufacturer. At the same time, it was shown that, contrary to popular belief, cannibalisation does not have to be limited only to minor elements, but also to key components important from the point of view of the satisfactory technical condition and correct working of the fuel injector during further operation","PeriodicalId":34258,"journal":{"name":"Combustion Engines","volume":"51 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90297131","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
Investigation of processes in the WLTC test of a passenger car with a diesel engine 柴油机乘用车WLTC试验过程的研究
Combustion Engines Pub Date : 2023-06-28 DOI: 10.19206/ce-168328
M. Andrych-Zalewska
{"title":"Investigation of processes in the WLTC test of a passenger car with a diesel engine","authors":"M. Andrych-Zalewska","doi":"10.19206/ce-168328","DOIUrl":"https://doi.org/10.19206/ce-168328","url":null,"abstract":"The tests were carried out in accordance with the WLTP (Worldwide Light Duty Test Procedure), on a passenger car with a compression ignition engine. The analysis was conducted doe the following variables: vehicle speed, exhaust emission rate and fuel consumption volumetric rate. The subject of the research are exhaust emission components that are harmful to the health of living organisms: carbon monoxide, hydrocarbons and nitrogen oxides, as well as greenhouse gases. The research results have shown a very large range of values for carbon monoxide, organic compounds and nitrogen oxides emission rate characteristics. The average distance-specific emissions values of carbon monoxide, organic compounds and nitrogen oxides were very small and were in line with the Euro 6 requirements within a large margin. Correlation studies of the measured variables were conducted – between vehicle speed and exhaust emission rate as well as volumetric fuel consumption rates, and between exhaust emission rates and volumetric fuel consumption rates. Dimensionless statistical characteristics of the measured variables were determined, such as: extreme values, range, mean value, median, standard deviation, kurtosis, skewness and coefficient of variation. The coefficient of variation analysis made it possible to assess that the most dynamic properties could be observed in organic compounds emission rate, followed by carbon monoxide and nitrogen oxides emission rates, and finally – the vehicle speed. The vehicle speed histogram was characterized by relative uniformity apart from the dominance of the idle speed. Histograms of exhaust emission rate variables were most frequently dominated by small values.","PeriodicalId":34258,"journal":{"name":"Combustion Engines","volume":"IA-23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84613865","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: 1
Assessment of engine valve materials 发动机气门材料评估
Combustion Engines Pub Date : 2023-06-27 DOI: 10.19206/ce-166569
Szymon Tomaszewski, D. Grygier, Mateusz Dziubek
{"title":"Assessment of engine valve materials","authors":"Szymon Tomaszewski, D. Grygier, Mateusz Dziubek","doi":"10.19206/ce-166569","DOIUrl":"https://doi.org/10.19206/ce-166569","url":null,"abstract":"This paper presents an analysis of six sets of engine valves, each set consisting of one exhaust valve and one intake valve. Each pair of valves was used in an engine with different displacement and mileage. The valves were subjected to microscopic analysis, hardness measurement and chemical composition analysis using a glow discharge spectrometer and energy dispersive spectroscopy (EDS). The design and materials of the valves showed that both the intake and exhaust valves in their present form would be a strength of the engine.","PeriodicalId":34258,"journal":{"name":"Combustion Engines","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82490270","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
Technological developments in vehicles with electric drive 电动汽车的技术发展
Combustion Engines Pub Date : 2023-06-15 DOI: 10.19206/ce-168219
E. Szumska, R. Jurecki
{"title":"Technological developments in vehicles with electric drive","authors":"E. Szumska, R. Jurecki","doi":"10.19206/ce-168219","DOIUrl":"https://doi.org/10.19206/ce-168219","url":null,"abstract":"The fleet of electric vehicles is systematically growing. Many passenger car manufacturers are already reporting that after 2030, vehicles equipped with electric propulsion will account for half of the models produced. Vehicles equipped with an electric drive include: battery-powered electric vehicles, hybrid electric vehicles and fuel cell electric vehicles. Over the years, these vehicles have undergone constant change. The aim of this paper was to review trends in the development of pure electric vehicles and plug-in hybrid vehicles.","PeriodicalId":34258,"journal":{"name":"Combustion Engines","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74448708","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: 2
Potential of ethanol and butanol in reducing deposits of DISI engine injectors 乙醇和丁醇在减少DISI发动机喷油器沉积物中的潜力
Combustion Engines Pub Date : 2023-06-14 DOI: 10.19206/ce-167898
I. Pielecha, F. Szwajca, Z. Stępień
{"title":"Potential of ethanol and butanol in reducing deposits of DISI engine injectors","authors":"I. Pielecha, F. Szwajca, Z. Stępień","doi":"10.19206/ce-167898","DOIUrl":"https://doi.org/10.19206/ce-167898","url":null,"abstract":"The operation of conventional (hydrocarbon) fuels causes certain effects in the internal combustion engine. Despite the satisfactory efficiency of internal combustion engines, their fuel systems, particularly the injectors, are subject to constant fouling. The article analyzes the possibility of reducing the deposit of high-pressure gasoline injectors using the alcohol addition of ethanol and butanol. The study was conducted under the engine and non-engine conditions. Fuel injection timing was analyzed when fueling with different mixtures, and non-engine analyses were conducted to determine changes affecting the injectors. The results indicate the possibility of reducing injector hole coking using ethanol and butanol as a 20% additive to the base fuel.","PeriodicalId":34258,"journal":{"name":"Combustion Engines","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90390344","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
Experimental identification of the electrical discharge on a surface gap spark plug 表面间隙火花塞放电的实验鉴定
Combustion Engines Pub Date : 2023-06-14 DOI: 10.19206/ce-168296
F. Szwajca, K. Wisłocki
{"title":"Experimental identification of the electrical discharge on a surface gap spark plug","authors":"F. Szwajca, K. Wisłocki","doi":"10.19206/ce-168296","DOIUrl":"https://doi.org/10.19206/ce-168296","url":null,"abstract":"The main objective of the research is to assess the influence of the spark plug electrodes geometry on the structure of the electric arc. This issue is increasingly important in modern gas-fueled engines with lean and stratified air-gas mixtures. To explain the influence of electrode geometry on selected spark discharge indicators, optical tests were conducted, and the parameters of the test history, together with the movies of the discharging process, were recorded and analyzed. The tests were carried out comparatively for two types of spark plugs on the test stand: conventional spark plug and spark plug with a flat ground electrode. It has been found that using flat plug electrodes allows a larger spark area covered by the electric arc without losing the intensity of radiation. More, using an unconventional spark plug results in a shorter discharge time relative to the conventional spark plug, while the geometry of the conventional spark plug allows for maintaining a stable electric arc with a minimum tendency for creeping.","PeriodicalId":34258,"journal":{"name":"Combustion Engines","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73980968","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
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