Automotive and Engine Technology最新文献_第10页

Measurement of temporal and spatial resolved rotational temperature in ignition sparks at atmospheric pressure 大气压下点火火花时空分辨旋转温度的测量

Automotive and Engine Technology Pub Date : 2020-03-29 DOI: 10.1007/s41104-020-00059-w

Tobias Michler, Olaf Toedter, Thomas Koch

引用次数: 4

Methods of sensitivity analysis in model-based calibration 基于模型的校准中的灵敏度分析方法

Automotive and Engine Technology Pub Date : 2020-03-14 DOI: 10.1007/s41104-020-00058-x

Niklas Ebert, Jan-Christoph Goos, Frank Kirschbaum, Ergin Yildiz, Thomas Koch

引用次数: 1

Analytical study on the influence of valve pumping work on engine efficiency 气门抽气功对发动机效率影响的分析研究

Automotive and Engine Technology Pub Date : 2020-03-03 DOI: 10.1007/s41104-020-00057-y

Pascal Ortlieb, Adrian Schloßhauer, Simon Derichs, Julius Perge, Stefan Pischinger, Tolga Uhlmann, Sebastian Sonnen

{"title":"Analytical study on the influence of valve pumping work on engine efficiency","authors":"Pascal Ortlieb, Adrian Schloßhauer, Simon Derichs, Julius Perge, Stefan Pischinger, Tolga Uhlmann, Sebastian Sonnen","doi":"10.1007/s41104-020-00057-y","DOIUrl":"10.1007/s41104-020-00057-y","url":null,"abstract":"<div><p>Driving cycles like WLTP and the consideration of real driving emissions increase the relevance of load-dependent process losses for the prediction of engine efficiency based on engine process simulation. The contribution of valve pumping work to the total gas exchange losses of an internal combustion engine is usually neglected during engine conception. However, its share of the total gas exchange power losses increases with engine load. Within this paper, the variation of load, engine speed and valve timings on valve pumping work is investigated on a theoretical basis using 1D-CFD-simulation for a three-cylinder turbo-charged gasoline engine. Further, the influence of the valve lift curve design on valve pumping work is evaluated. The consideration of valve pumping work can increase the accuracy of the engine efficiency prognosis based on engine process simulations. A comparison with results from the literature points out that 3D-CFD-based evaluations of the valve gas forces can provide even more accurate results than the conventional calculation approach which is presented within scope of this publication. Hence, future works on this subject might include the improvement of the standard calculation approach on an either physical or empirical basis considering valve and seat ring design details as parameters.</p></div>","PeriodicalId":100150,"journal":{"name":"Automotive and Engine Technology","volume":"5 1-2","pages":"37 - 44"},"PeriodicalIF":0.0,"publicationDate":"2020-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s41104-020-00057-y","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50446519","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: 4

Dynamic measurement of the fluid pressure in the tire contact area on wet roads 湿路面上轮胎接触区域内流体压力的动态测量

Automotive and Engine Technology Pub Date : 2020-02-03 DOI: 10.1007/s41104-020-00056-z

J. Löwer, P. Wagner, H. J. Unrau, C. Bederna, F. Gauterin

引用次数: 5

Internal combustion engines water injection fed by Exhaust Water Recirculation (EWR): a feasibility analysis 废气再循环（EWR）给内燃机注水的可行性分析

Automotive and Engine Technology Pub Date : 2020-01-08 DOI: 10.1007/s41104-019-00055-9

A. Vaudrey, J. Cuisano

引用次数: 0

Application of a combined physical and data-based model for improved numerical simulation of a medium-duty diesel engine 基于物理和数据的组合模型在改进中型柴油机数值模拟中的应用

Automotive and Engine Technology Pub Date : 2019-12-24 DOI: 10.1007/s41104-019-00054-w

Marcel Lang, Peter Bloch, Thomas Koch, Torsten Eggert, Robin Schifferdecker

{"title":"Application of a combined physical and data-based model for improved numerical simulation of a medium-duty diesel engine","authors":"Marcel Lang, Peter Bloch, Thomas Koch, Torsten Eggert, Robin Schifferdecker","doi":"10.1007/s41104-019-00054-w","DOIUrl":"10.1007/s41104-019-00054-w","url":null,"abstract":"<div><p>The one-dimensional computational fluid dynamics (1D-CFD) simulation is an important development tool for improving the matching process of the exhaust gas turbocharger with a combustion engine. To meet future emission requirements of commercial vehicles, an increasing focus on transient operation conditions is given. For example, a faster boost pressure build-up allows higher exhaust gas recirculation rates during load steps—improving transient nitrogen oxides (<span>(hbox {NO}_x)</span>) emissions. According to this, the matching process of the turbocharger focuses increasingly on the transient operation conditions of combustion engines. To increase the quality of the dynamic engine process simulation, the simulation model should be optimized with regard to the quality of the engine’s high-pressure process including emissions as well as the turbocharger modeling methodology. This paper focuses on the application of an approach that combines a data-based combustion model for the <span>(hbox {NO}_x)</span> and soot values and the high-pressure part of the working process with a physical description of the gas exchange. To generate the data for the combustion model, an extensive measurement campaign of all relevant parameters was carried out on a medium-duty diesel single-cylinder research engine. The developed model was integrated into a multi-cylinder engine (MCE) simulation environment and validated on the basis of corresponding MCE measurements. The sensitivities of the model were examined for the input parameters. The data-based combustion model demonstrates a high accuracy in emissions and high-pressure working process modeling both in the wide range of the engine map and under transient operating conditions as well as for different engine calibration strategies. As a result, a good baseline for the improved transient combustion simulation is provided.</p></div>","PeriodicalId":100150,"journal":{"name":"Automotive and Engine Technology","volume":"5 1-2","pages":"1 - 20"},"PeriodicalIF":0.0,"publicationDate":"2019-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s41104-019-00054-w","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50509623","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

Acoustic effects of the coolant mass flow of an electric machine of a hybrid drive train 混合动力传动系电机冷却剂质量流的声学效应

Automotive and Engine Technology Pub Date : 2019-10-14 DOI: 10.1007/s41104-019-00053-x

Michael Schnell, Frank Gauterin

引用次数: 2

Generic model for production-related requirements and their interdependencies on the example of automotive chassis 生产相关要求的通用模型及其相互依赖性——以汽车底盘为例

Automotive and Engine Technology Pub Date : 2019-09-26 DOI: 10.1007/s41104-019-00052-y

Bastian Leistner, Danail Angelov, Ralph Mayer

{"title":"Generic model for production-related requirements and their interdependencies on the example of automotive chassis","authors":"Bastian Leistner, Danail Angelov, Ralph Mayer","doi":"10.1007/s41104-019-00052-y","DOIUrl":"10.1007/s41104-019-00052-y","url":null,"abstract":"<div><p>In an era of rapidly changing trends and customer requirements, the necessity of agile product development processes has arisen. Currently used processes are not sustainable because they are not able to handle future volatility considering early phase requirements and would lead to late and expensive changes in product design. In the context of the automobile industry, the early phase of the product development has to deal with requirements, designing a modular vehicle architecture, which includes all models of a product family. An empirical research was conducted to generate a thorough list of production-related requirements for the chassis, between interacting departments and roles within an automotive OEM. The resulting generic model showed the interdependencies between the analysed requirements. Additionally, the aim is to measure the maturity level of the individual production-related requirements at specific phases. The first benefit of this model is to show through the interdependencies between existing production requirements, how a change would affect the system. Secondly, it is possible to measure the existing production-related issues through a maturity model, which specifies the level of completion of single components at specific phases, and thus give a value to the product development process.</p></div>","PeriodicalId":100150,"journal":{"name":"Automotive and Engine Technology","volume":"4 3-4","pages":"179 - 188"},"PeriodicalIF":0.0,"publicationDate":"2019-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s41104-019-00052-y","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50515938","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

Prediction of the airborne sound transmission through the front end of a vehicle 车辆前端空气传播声音的预测

Automotive and Engine Technology Pub Date : 2019-09-10 DOI: 10.1007/s41104-019-00051-z

Maria Gavila Lloret, Fabian Duvigneau, Ulrich Gabbert, Hermann Rottengruber

{"title":"Prediction of the airborne sound transmission through the front end of a vehicle","authors":"Maria Gavila Lloret, Fabian Duvigneau, Ulrich Gabbert, Hermann Rottengruber","doi":"10.1007/s41104-019-00051-z","DOIUrl":"10.1007/s41104-019-00051-z","url":null,"abstract":"<div><p>Acoustics represents a quality feature of a passenger vehicle. During the first development phases, prediction tools of the acoustic performance are required to assess in the design process. A combination of numerical and experimental data provides a good compromise between accuracy and modeling effort. A key part of the airborne noise transmission chain are the different passive acoustic treatments applied to minimize the noise impact. These treatments usually include one or more layers of poroelastic media. They exhibit a highly dissipative behavior, making them suitable as noise barriers but, at the same time, complex to model. This article aims to identify the parameters that define the appropriate numerical modeling approach for vibroacoustic systems with poroelastic acoustic packages. Two different concepts for the noise reduction based on poroelastic materials have been investigated, namely the insulation through a spring–mass component and the absorption of a porous layer. The essential principles of the theory of poroelasticity are recalled and three material formulations are derived. The application range of each material model is examined with the help of two configurations: a flat plate and a simplified model of a vehicle front end. The acoustic response of the system is solved with the help of the finite element method using the different material formulations for the description of the poroelastic layers, and the results are compared to measurements conducted in a window test bench. Finally, the main findings are summarized and recommendations towards a more realistic representation of the complete transmission chain are presented.</p></div>","PeriodicalId":100150,"journal":{"name":"Automotive and Engine Technology","volume":"4 3-4","pages":"169 - 178"},"PeriodicalIF":0.0,"publicationDate":"2019-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s41104-019-00051-z","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50469962","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: 4

Active torsional vibration reduction: potential analysis and controller development for a belt-driven 48 V system 主动扭转减振：带传动48V系统的潜在分析和控制器开发

Automotive and Engine Technology Pub Date : 2019-07-29 DOI: 10.1007/s41104-019-00049-7

Raja Sangili Vadamalu, Christian Beidl, Guenter Hohenberg, Klaus Muehlbauer

{"title":"Active torsional vibration reduction: potential analysis and controller development for a belt-driven 48 V system","authors":"Raja Sangili Vadamalu, Christian Beidl, Guenter Hohenberg, Klaus Muehlbauer","doi":"10.1007/s41104-019-00049-7","DOIUrl":"10.1007/s41104-019-00049-7","url":null,"abstract":"<div><p>Modern internal combustion engines (ICE) reach higher peak pressure thanks to the improved thermodynamic processes and charging technologies. Passive vibration damping approaches face challenges motivating the application of active methods. Active torsional vibration reduction achieves reduced torsional oscillations using the compensation torque generated by an electric traction machine (ETM). 48 V-based hybridization is gaining increased attention as an intermediate step towards higher levels of powertrain electrification. This trend opens new challenges for active vibration reduction with non-inline integration of the ETM using belt drive systems. We analyze the available potential for active torsional vibration attenuation in such belt drive systems in combination with a 48 V belt-driven starter generator (BSG). The study shows that a dual-mass flywheel (DMF) with a centrifugal pendulum absorber can be replaced by a simplified DMF with active vibration reduction using the 48 V BSG system. The effectiveness of active vibration reduction depends on the control functionality. In this contribution, we present an adaptive controller which does not require sensors for reference signal measurement. Besides simulative analysis, the performance of the proposed controller is demonstrated on the experimental test setup with a 2-cylinder ICE and an ETM in an inline configuration.</p></div>","PeriodicalId":100150,"journal":{"name":"Automotive and Engine Technology","volume":"4 3-4","pages":"139 - 151"},"PeriodicalIF":0.0,"publicationDate":"2019-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s41104-019-00049-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50523205","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: 3