Combustion Engines最新文献_第8页

Crankshaft geometry modification and strength simulations for a new design of diesel opposed-piston engine 一种新型柴油机对置活塞发动机曲轴几何修正及强度仿真

Combustion Engines Pub Date : 2023-08-08 DOI: 10.19206/ce-169371

P. Magryta, K. Pietrykowski

引用次数: 1

Evaluation of the impact of supplying a marine diesel engine with a mixture of diesel oil and n-butanol on its efficiency and emission of toxic compounds 用柴油和正丁醇混合燃料供应船用柴油机对其效率和有毒化合物排放影响的评价

Combustion Engines Pub Date : 2023-08-08 DOI: 10.19206/ce-169484

M. Zacharewicz, Paweł Socik, P. Wirkowski, R. Zadrąg, Artur Bogdanowicz

引用次数: 0

Evaluation of the energy efficiency of electric vehicle drivetrains under urban operating conditions 城市工况下电动汽车传动系统能效评价

Combustion Engines Pub Date : 2023-08-08 DOI: 10.19206/ce-169492

J. Kropiwnicki, Tomasz Gawłas

{"title":"Evaluation of the energy efficiency of electric vehicle drivetrains under urban operating conditions","authors":"J. Kropiwnicki, Tomasz Gawłas","doi":"10.19206/ce-169492","DOIUrl":"https://doi.org/10.19206/ce-169492","url":null,"abstract":"In electric vehicles, as in hybrids vehicles, a very important factor affecting the energy efficiency of the powertrain is the ability to use the regenerative braking energy. Depending on the settings available in electric vehicles, the driver can choose different modes of operation: switch off the regenerative braking mode altogether, select the intensity of regenerative braking, or leave the control system in automatic mode. The last mode is often the only one available on eclectic vehicles, so the driver cannot decide whether to switch off or increase intensity of the regenerative braking. This paper presents a new method for evaluating the energy efficiency of electric vehicle powertrains under urban operating conditions. The presented method uses a procedure for mapping the operating conditions allowing to determine the reference level of energy consumption in relation to those recorded during the identifica-tion tests. Identification tests were carried out in the Tri-City area using electric vehicles of different purposes and operating parameters. Performed tests allowed to evaluate the regenerative braking efficiency of tested vehicle, which varies over a relatively wide range, for vehicle A from 33% to 77%, for vehicle B from 27% to 55% and for vehicle C from 36% to 58%. It can be concluded that one of the main factors determining the regenerative braking efficiency is the level of state of charge of the accumu-lator and the management algorithm used by the vehicle for controlling this parameter.","PeriodicalId":34258,"journal":{"name":"Combustion Engines","volume":"86 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86909300","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

Selected vehicle emissivity assessment issues in passenger transport services 客运服务中选定车辆的排放评估问题

Combustion Engines Pub Date : 2023-08-08 DOI: 10.19206/ce-169806

Piotr Pryciński, Róża Wawryszczuk, Jarosaław Korzeb, Piotr Pielecha, Jakub Murawski

引用次数: 0

Analysis of lubricating oil degradation and its influence on brake specific fuel consumption of a light-duty compression-ignition engine running a durability cycle on a test stand 某轻型压点火发动机耐久性循环试验润滑油降解及其对制动比油耗的影响分析

Combustion Engines Pub Date : 2023-08-05 DOI: 10.19206/ce-169488

R. Sala, Kamil Węglarz, A. Suchecki

{"title":"Analysis of lubricating oil degradation and its influence on brake specific fuel consumption of a light-duty compression-ignition engine running a durability cycle on a test stand","authors":"R. Sala, Kamil Węglarz, A. Suchecki","doi":"10.19206/ce-169488","DOIUrl":"https://doi.org/10.19206/ce-169488","url":null,"abstract":"The Euro 6 emission standard required compliance with legal exhaust emissions limits for newly registered vehicles and obligates light duty vehicle manufacturers to respect the 160,000 km durability requirements for in-service conformity. Although there is no legal limit set for fuel consumption, manufacturers are obligated to decrease the carbon footprint of vehicle fleets in order to obtain carbon neutral mobility beyond 2035. \u0000The aim of this paper is to analyse the impact of various oils’ and viscosity grades’ degradation on the change in break specific fuel consumption (BSFC) measured over a standardized durability test cycle. Each oil candidate underwent 300 h of durability test running performed on a test bed, without any oil changes. The purpose of the laboratory test was to reproduce the worst-case operating conditions and degradation process of the long-life engine oil type that can be experienced during extreme real life driving of a vehicle.\u0000In order to define the influence of the engine oil deterioration on the BSFC profile, the engine operation parameters were continually monitored throughout the test run. Additionally, chemical analysis of the oil was performed and the solid deposits formed on the turbocharger’s compressor side were evaluated. \u0000The test results revealed differences up to 3.5% in the BSFC values between the oil candidates tested over the durability cycle. The observed BSFC increase was directly related to the decrease in engine efficiency and can cause higher fuel consumption of the engine, which in turn has an adverse effect on environmental protection goals.","PeriodicalId":34258,"journal":{"name":"Combustion Engines","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89572078","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

Technology for manufacturing catalytic systems using a pilot line for precious metal recovery 贵金属回收中试线催化系统制造技术

Combustion Engines Pub Date : 2023-08-05 DOI: 10.19206/ce-169332

P. Fuć, Barbara Sokolnicka-Popis, A. Ziółkowski, M. Bednarek, Aleks Jagielski, Anna Michałowska

引用次数: 0

Combustion comparative analysis of pyrolysis oil and diesel fuel under constant-volume conditions 热解油与柴油在等体积条件下的燃烧对比分析

Combustion Engines Pub Date : 2023-08-04 DOI: 10.19206/ce-169805

M. Szwaja, A. Szymanek

{"title":"Combustion comparative analysis of pyrolysis oil and diesel fuel under constant-volume conditions","authors":"M. Szwaja, A. Szymanek","doi":"10.19206/ce-169805","DOIUrl":"https://doi.org/10.19206/ce-169805","url":null,"abstract":"The article discusses the research results on the combustion of pyrolysis oil derived from the pyrolysis of HDPE plastics after its distillation. The tests were carried out in a constant-volume combustion chamber in conditions similar to those in a compression-ignition engine with a compression ratio of 17.5:1. The phases of premixed and diffusion combustion and the ignition lag were determined. Diesel fuel combustion tests were performed under similar pressure-temperature conditions. Comparative analysis was used to draw conclusions as follows: the duration of the premixed combustion phase for pyrolysis oil is approximately 5% shorter than that for diesel oil; with an increase in the initial pressure in the chamber, the premixed combustion time in both cases was shortened, while the diffusion combustion time slightly increased, practically without any significant change; the maximum combustion rate for the premixed combustion phase for pyrolysis oil was nearly 20% higher than that for diesel fuel; the heat released from the premixed combustion phase for pyrolysis oil was found to be 20% higher compared to that one for diesel fuel; the ignition lag for pyrolysis oil was slightly longer compared to that for diesel fuel.\u0000The presented parameters significantly impact both the development of combustion and the thermal efficiency of the internal combustion engine. Summing up, pyrolysis oil can be applied as a substitute for diesel fuel as a single or blended component with it.","PeriodicalId":34258,"journal":{"name":"Combustion Engines","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72548344","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

Combustion of LPG / DME gas mixtures in an SI engine with correction of the ignition advance angle 液化石油气/二甲醚混合气体在SI发动机中的燃烧及点火提前角校正

Combustion Engines Pub Date : 2023-08-04 DOI: 10.19206/ce-168401

G. Kubica

{"title":"Combustion of LPG / DME gas mixtures in an SI engine with correction of the ignition advance angle","authors":"G. Kubica","doi":"10.19206/ce-168401","DOIUrl":"https://doi.org/10.19206/ce-168401","url":null,"abstract":"The paper presents the results of tests on a SI engine fueled with an LPG/DME blends of various composition. A number of experimental studies and calculations using a mathematical model were carried out to examine the suitability of this fuel. These tests allowed for the analysis of the changes taking place in the combustion process and the assessment of the main operating parameters of the engine. The results of the analysis of the combustion process make it possible to observe how the heat is released and how the indicated pressure changes, depending on the share of DME in the fuel mixture. The scope of the tests performed included engine and vehicle tests on a chassis dynamometer and a series of simulation tests conducted on the basis of the obtained results. The engine was powered by an LPG/DME fuel mixture with different proportions of components. The share of DME ranged from 0% to 30% of the fuel mass. The obtained results reflect the operation of the engine in the full load range and selected rotational speeds. Measurement series were made for different settings of the ignition advance angle. Based on the obtained results, a corrected map of the ignition advance angle was developed. The obtained results confirm the usefulness of using the LPG/DME mixture to power the SI engine.","PeriodicalId":34258,"journal":{"name":"Combustion Engines","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89564676","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

Analysis of the potential of electro-waste as a source of hydrogen to power low-emission vehicle powertrains. 分析电子废物作为氢源为低排放汽车动力系统提供动力的潜力。

Combustion Engines Pub Date : 2023-08-04 DOI: 10.19206/ce-169494

Mateusz Wesołowski, Mohamad Hamid, Piotr Mońka, A. Janicka

{"title":"Analysis of the potential of electro-waste as a source of hydrogen to power low-emission vehicle powertrains.","authors":"Mateusz Wesołowski, Mohamad Hamid, Piotr Mońka, A. Janicka","doi":"10.19206/ce-169494","DOIUrl":"https://doi.org/10.19206/ce-169494","url":null,"abstract":"The decarbonisation of transport is one of the key aspects in the context of environmental protection. These emissions are particularly noticeable in highly urbanised areas, where the possibility of dispersal of harmful substances is much lower. A way to improve emission factors is the introduction of hydrogen vehicles. Burning hydrogen in engines significantly reduces emissions of harmful substances into the atmosphere compared to the combustion of conventional fuels used today. Hydrogen can be obtained by gasifying waste in a steam atmosphere. Electronic waste is a special type of waste characterised by a high degree of commingling, which makes it difficult to treat. The volume of this type of waste is increasing year on year. As a result of this process, we are able to obtain syngas. This gas, after separation processes, can be a source of hydrogen, an energy carrier that could prove crucial in low-carbon energy or transport applications. This paper presents the results of the gasification of electronic waste, the composition of the syngas obtained in the process and an assessment of the potential of this waste treatment technology to power means of transport.","PeriodicalId":34258,"journal":{"name":"Combustion Engines","volume":"523 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77867799","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

Fuel systems of high power stationary engine 大功率固定式发动机燃油系统

Combustion Engines Pub Date : 2023-08-04 DOI: 10.19206/ce-169151

Z. Kneba

引用次数: 0