VDI Verlag eLibrary

Nutzfahrzeuge 2017 – Commercial Vehicles 2017

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2298 2017

Results in this title

K.-E. Yildirim, M. Finkenrath, M. Gökoglu Monitoring the fresh-air flow rate for energy-efficient bus ventilation – By monitoring of relative humidity and CO2-concentration S. 143-154

„… Monitoring the fresh-air flow rate for energy-efficient bus ventilation By monitoring of …” „… ventilated with high fresh air rates without monitoring of air quality according to recommendations and …” „… is called here “monitored fresh air rate”. Average occupancy of city busses is 30 %. This means the …”

Titelei/Inhaltsverzeichnis S. I-IX

„… . Moldenhauer, J. Aurich, O. Predelli, A. Meyer K.-E. Yildirim, Monitoring the fresh-air flow rate for …” „… requirements C. Brinkkötter, Energy Efficient Standstill Air Conditioning for Trucks 125 R. Baumgart, S …”

doi.org/10.51202/9783181022986

Partial access

Select for citation download

Commercial Vehicles 2021

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2380 2021

Results in this title

C. Glöggler, C. Neuschl, A. Zaiser, D. Denzel Health & safety in public transport – Better climate and optimized hygiene in times of COVID-19 S. 229-244

„… quality for fresh and recirculated air components Almost without exception, the air flow of Daimler Buses …” „… complete air exchange every 120 minutes. The combination of directional air flow and a high fresh air …” „… transmission - Through a directed air flow in the passenger compartment - Through a high fresh air …”

S. Schönherr, T. Bergmaier-Trede MAN Truck & Bus SE – Shaping the future of mobility S. 245-270

„… . Fresh, intelligent use of space plays a decisive role in the spatial effect, using light, materials …” „… fresh, eye-catching and compelling impression and the vehicle's design is already award-winning. The iF …” „… to fly in specific flight corridors as air taxis, drones etc. Using these as a means of mass …”

doi.org/10.51202/9783181023808

Partial access

Select for citation download

AgEng LAND.TECHNIK 2022

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2406 2022

Results in this title

J. Mellmann, T. Ziegler, T. Teodorov, T. Hoffmann, R. Joachim, B. Sturm Homogenization of belt drying of hops by controlling the supply air humidity using partial air recirculation S. 211-216

„… varieties. These dryers are conventionally operated with fresh air, which is heated to the desired drying …” „… the fresh air, in addition to other disturbance variables such as product changes (hop variety) and …” „… fluctuations in initial moisture content. Experience shows that the water content of the fresh air can vary by …”

S. Hempel, L. Ouatahar, D. Janke, T. Amon A nested semi-mechanistic model to predict the temporal dynamics of ammonia emissions from a solid floor naturally ventilated dairy cattle building – Parameter estimation and associated uncertainties S. 197-202

„… volume flow and concentration measurements at the building scale to train regression models or a …” „… was mounted below the ridge, the other lines at approximately 3 m height. Air temperature was measured …” „… distributed in the barn were measured together with the near surface air temperature. For further details on …”

S.-W. Lee, I.-H. Seo Evaluation of particulate matter concentrations by crop cultivation in reclaimed land – Reduction of particulate matter by crop cultivation S. 533-540

„… 11,800 ha of fresh lake located in Korea. The soil in Saemangeum has a dry surface characteristic with a …” „… lowering the flow rate on the soil surface, thereby suppressing creeping and saltation of the soil, which …” „… the ground. Since particulate matter in the air is greatly affected by the wind due to its physical …”

doi.org/10.51202/9783181024065

No access

Select for citation download

Model-Based Control of a Turbocharged Diesel Engine with High- and Low-Pressure Exhaust Gas

Matthias Patrick Alexander Mrosek

Series: Verkehrstechnik/Fahrzeugtechnik

Volume 803 2017

Results in this title

Semi-Physical Mean Value Engine Model S. 12-33

„… the combustion process xeng;out can be described with (3.10) by the fresh air mass flow rate …” „… massmair flowing into the engine can be divided into a remaining fresh air mass mst;air and a burned gas …” „… Pmin;i , outflowing gas mass flow rates Pmout;j , inflow temperatures Tin;i and inflow air contents xin;i …”

Introduction S. 1-7

„… contents between HP-EGR and fresh air. A novel approach termed low-pressure exhaust gas recirculation …” „… to a HP-EGR a better mixing of exhaust gas with fresh air. This homogeneous gas mixing can be …” „… allows simultaneously high LP-EGR rates at large charge-air pressures. At a given air mass flow rate and …”

Engine Configuration and Modelling S. 8-11

„… pressure level. Further, it has the objectives to reduce the air mass flow rate in case of a Diesel …” „… Ti and air contents (ratio of fresh air mass to total gas mass) xi in the storage elements i as well …” „… modelling approaches to simulate the engine air path and the emissions are chosen. 2.1 Engine Configuration …”

Titelei/Inhaltsverzeichnis S. I-XX

„… circumferential part of the relative velocity m/s x air content (ratio of fresh air mass to total gas mass) 1 X …” „… related particulate emissions mg/km Pmair air mass flow rate kg/s or kg/h Pmc compressor gas mass flow …” „… Weng engine work kWh x air content (ratio of fresh air mass to total gas mass) 1 x1 air content before …”

System Properties of the Air Path with HP- and LP-EGR S. 34-60

„… pressure p1 falls in relationship to pa, the more fresh air flows via the air filter into the engine gas …” „… shp egr, slp egr and st and the air path quantities. All storages and flow orifices, which do no …” „… phase characteristics in p2i and a sign-reversal in Pmair also unpublished effects like an air mass flow …”

Air Path Control Design and Dynamical Reference Value Generation S. 102-167

„… . Schloßer (2000) introduces an attempt for a decoupling multi-variable control of the air mass flow rate and …” „… ) simplifies the coupled system of air mass flow rate and charge-air pressure to a system of operation point …” „… multi-variable control of air mass flow rate and charge-air pressure are presented and compared in von Pfeil …”

Optimisation of the Reference Values for the Air Path Control S. 86-101

„… trajectory for the air mass flow rate, respectively the air content, is derived based on local polynomial …” „… dynamical engine emission course. Based on this knowledge reference values for the air mass flow rate …” „… charge-air pressure, the differences between a HP-EGR-rate control, a HP-EGR mass flow rate control, an air …”

doi.org/10.51202/9783186803122

Partial access

Select for citation download

37. Internationales Wiener Motorensymposium 28. – 29. April 2016

Hans Peter Lenz (ed.)

Series: Verkehrstechnik/Fahrzeugtechnik

Volume 799 2016

Results in this title

R. Smaling, D. Mohr, D. Eckroth, A. Desai, C. Lana, Y. Yuan, K. Li Entwicklung eines Erdgas-Motors für Lastkraftwagen/Development of an On-Road Heavy Duty Natural Gas Engine S. II-385-II-402

„… , EGV and WG actuator commands to achieve the target engine Fresh Air Flow (FAF), EGR fraction and …” „… - - 12 - Figure 18: Fresh Air Flow and EGR Fraction Tracking during an FTP Cycle. Air Fuel Ratio …” „… - Controls Air Handling Control The AH (Air Handling) architecture is depicted in Figure 17. The fresh …”

G. Boretto, G. Basso, R. M. Frank, L. Borgia, L. Garzarella, R. Carrozza, V. Petronzi, M. Weßlau, A. Bauer Der neue 1,6 Liter Diesel Motor mit 2-stufiger Aufladung von General Motors /The New 1.6 Liter Midsize Diesel Engine with Two-Stage Turbocharging from General Motors S. II-98-II-110

„… further expansion. On the compressor side, the fresh air flow coming from the air induction system, passes …” „… Low-Pressure (LP) stage has been sized and designed to provide adequate air flow rate and pressure (up to 320 …” „… duct (cold pipe) which allows the air flow to the inlet of the HP compressor. The connection is …”

doi.org/10.51202/9783186799128

Partial access

Select for citation download

SIMVEC 2022

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2407 2022

Results in this title

D. Bäder, S. Eibl, C. Wolf, P. Kolar, A. Oliva, F. Meyer 3D CFD Simulations of Snow Accumulation in the Wheel House of a Vehicle at different Driving Speeds S. 1-20

„… interior air conditioning or aggregate flows [4], [5], have been performed for decades. In particular, due …” „… body forces, e.g., gravity, adhesion, air flows. Hyperelasticity assumes that the stress tensor can be …” „… facilities such as climatic wind tunnels and on open-air test tracks and public roads as part of so-called …”

M. Glensvig, C. Kozlik, D. Kreilinger Full Vehicle Virtual Calibration Platform – AVL Co-Simulation and SiL solution S. 629-646

„… combustion process are highly determined by the amount of fresh air respectively recirculated exhaust gas …” „… this purpose: Specification of the required fresh air mass; determination of the open- and closed-loop …” „… modelled air path, consisting of the air filter, turbo charger, EGR system, coolers and connecting pipes …”

doi.org/10.51202/9783181024072

No access

Select for citation download

41. Internationales Wiener Motorensymposium 22.-24. April 2020

Bernhard Geringer (ed.), Hans-Peter Lenz (ed.)

Series: Verkehrstechnik/Fahrzeugtechnik

Volume 813 2020

Results in this title

K. Hwang, C. Yu, B. Min, Y. Kim, D. Lee, K. Ha, D. Chae, J. Yi Der neue Smartstream 1.0L DI-Turbo Ottomotor von Hyundai-Kia/The New Hyundai-Kia's Smartstream 1.0L Turbo GDi Engine S. I-121-I-150

„… the compression stroke moves along the optimized fresh air flow to produce mixed air of …” „… gas to below 150℃ are provided into upstream of compressor to mix with fresh air before compressing …” „… , thermometer and humidity sensor inside air mass flow sensor has developed and applied for Smartstream 1.0L …”

doi.org/10.51202/9783186813121

Partial access

Select for citation download

28. Deutscher Flammentag

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2302 2017

Results in this title

T. Zirwes, F. Zhang, J. A. Denev, P. Habisreuther, H. Bockhorn, N. Zarzalis Einfluss von erhöhtem Druck auf die Änderung der Flammendynamik durch Streckung in vorgemischten Flammen S. 549-562

„… number for a H2/air jet-flame at ? = 0.5 (left) and a H2/air counter-flow flame at ? = 0.7 (right …” „… stretch, numerical simulations have been performed in this work for 1D premixed counter-flow flames …” „… methane/air and hydrogen/air flames at 1 bar and 5 bar, employing detailed, pressure-dependent reaction …”

C. Chi, G. Janiga, K. Zähringer, D. Thévenin Indirekte Messung der Wärmefreisetzung in Wasserstoffflammen mittels Spezieskorrelationen S. 625-636

„… OH and CH2O PLIF images to approximate the heat release rate in turbulent premixed methane-air and …” „… dimethylether-air flames. This method showed satisfactory results and has, since then, been used widely [11, 12, 13 …” „… fresh gas compositions of Table 1 initialized within the kernel. The simulation results are analyzed …”

doi.org/10.51202/9783181023020

Partial access

Select for citation download

Ventiltrieb und Zylinderkopf 2017

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2291 2017

Results in this title

R. Janak, J. Baltrucki Next Generation of Valve Train Technology for Engine Braking and More S. 223-240

„… from the ‘Fail Safe’ BGR, and no fresh air from the intake manifold. The air flow for the1.5 stroke …” „… HPD cycle is shown in Fig.7. Because less fresh intake manifold air is used for this engine brake …” „… high air mass flows experienced with the 2.0 Stroke HPD cycle at low engine speeds which allows the …”

doi.org/10.51202/9783181022917

Partial access

Select for citation download

Innovative Antriebe 2016

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2289 2016

Results in this title

G. Regner, A. Salvi, L. Fromm, F. Redon The Opposed-Piston Engine: The Next Step in Vehicle Efficiency S. 101-130

„… . Upstream of the OP Engine, a compressor driven by fixed-geometry turbo is used to draw in fresh air. To …” „… flow area than a comparable four-stroke or a single-piston twostroke uniflow or loop-scavenged engine …” „… , mixing and air utilization with both swirl and tumble charge motion with the high turbulent kinetic …”

doi.org/10.51202/9783181022894

Partial access

Select for citation download

XXXVI. Internationales μ-Symposium – Bremsen-Fachtagung

Ralph Meyer (ed.)

Series: Verkehrstechnik/Fahrzeugtechnik

Volume 806 2017

Results in this title

M. Streitenberger, S. Yigit, J. Wuchatsch Multiphysical Simulation of Brake Fluid Temperature Rise during Mountain Descent S. 97-114

„… disc within the orth men- (04) and he cooling he back of flow from heat flow . The air e range of se …” „… one aspect. Surrounding air circulating the brake corner is evacuating energy in some areas, whereas …” „… kinetic energy to heat during braking. This heat is released to the ambient air over the brake surface …”

doi.org/10.51202/9783186806123

Partial access

Select for citation download

Dritev 2023

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2420 2023

Results in this title

Y. Jin Smart eDrive – Autonomous cooling eDrive for small BEVs and P4 AWD S. 21-36

„… all over the surface of the eAxle. The eAxle will fully be cooled by the air flow externally, making …” „… half of the air window in the bumper is used to provide fresh air to the Smart eDrive (Fig. 14) Various …” „… eDrive technology also relevant for the P4 HEV eDrive architecture provided that the air flow path is …”

doi.org/10.51202/9783181024201

No access

Select for citation download

Powertrain Systems in Mobile Machines 2022

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2402 2022

Results in this title

L. Virnich, T. Durand, S. Schaub, S. Ghetti, D. Van der Put Optimization of powertrain layout to maximize benefits of an H2 internal combustion engine S. 79-94

„… reduced by ~ 20% due to the presence of hydrogen. Both fresh air and hydrogen must be pushed through the …” „… relative mass flow rates of hydrogen and the incoming air, and on the direction of the injection. A …” „… ” combustion principle. The air/fuel mixture is ignited by the external energy source provided by a spark plug …”

doi.org/10.51202/9783181024027

No access

Select for citation download

Gefahrstoffe

Browse Volumes: Gefahrstoffe

GrdL Volume 80 (2020) Issue 09 ISSN Online: 0949-8036

Results in this title

M. Clauß, S. Linke, A. C. Springorum Distribution of total bacteria and staphylococci in PM2.5, PM10 and total dust in the emission of two fattening pig houses/Verteilung von Gesamtbakterien und Staphylokokken in PM2,5, PM10 und Gesamtstaub in der Emission von zwei Mastschweineställen S. 344-348

„… houses have suction ventilation systems. The fresh air flow through air ducts and perforated ceilings …” „… into the compartments. The exhaust air flow to a central air duct arranged in the roof ridge to the …” „… fixed flow rates of the sampler and varying exhaust air velocities in the chimneys entry nozzles with …”

doi.org/10.37544/0949-8036-2020-09

No access

Select for citation download

International Conference on Gears 2023

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2422 2023

Results in this title

F. Concli, M. N. Mastrone Latest advancements in the lubrication simulations of geared systems: a technology ready for industrial applications S. 499-518

„… entrainment of air at a free surface. Flow Science, Inc., (2003). [87] Maccioni, L., Chernoray, V.G., Mastrone …” „… lubrication, while windage has an impact only when gears strongly interact with air (e.g. injection …” „… the oil flow in an automotive manual transmission. The results of predictions of lubrication …”

doi.org/10.51202/9783181024225

No access

Select for citation download

Results (51)