Suche einschränken

Ergebnisse (122)

Sortierung:

Alle Alles auswählen

Seite 6

VDI Wissensforum GmbH - Nutzfahrzeuge 2017 – Commercial Vehicles 2017

Teilzugriff

Auswählen

VDI Wissensforum GmbH (Hrsg.)

Nutzfahrzeuge 2017 – Commercial Vehicles 2017

Reihe: VDI-Berichte

Band 2298 2017

Treffer in den folgenden Teilen:

S. Gohl, F. Tenbrock, L. van Rooij, D. Williams, G. Gumpoltsberger ZF Innovation Truck 2016 – Advanced Driver Assistance Systems are increasing safety and usability S. 41-52

„… ZF Innovation Truck 2016 Advanced Driver Assistance Systems are increasing safety and …” „… Abstract Advanced Driver Assistance Systems (ADAS) enable commercial vehicles to SEE, THINK and ACT …” „… efficiency by increasing safety and relief of the driver. The truck autonomously evades the end of a traffic …”

M. Dietrich, M. Kohler, F.-D. Speck Electrification in Commercial Vehicles – Megatrends and Solutions – Electric Drives for Light and Medium Commercial Vehicles and TraXon Hybrid for Heavy Duty S. 13-24

„… differential from which the wheels can be driven directly. Electric motor, transmission and differential are …” „… in order, on the one hand, to serve vehicles with front-wheel drive and, on the other hand …” „… Electrification in Commercial Vehicles Megatrends and Solutions – Electric Drives for Light and …”

F. Sauter, H. Mozer, B. Fessler, J. Glückler Development of an 8-speed Automatic Transmission for Medium-duty Trucks and Buses – Market analysis, selection, detailed definition and comparison of concepts and rollout of a segment-optimized tra... S. 197-208

„… realizing power take-offs and different all-wheel drive concepts are also part of this evaluation category …” „… pickups, light- and medium-duty trucks to buses and special vehicles – based on one single concept …” „… small single-step range of gears and, opened up the path to efficient fuel map areas of modern …”

G. Nitzsche, S. Wagner, M. Engel Electric Drivelines in Semi-Trailers – TRANSFORMERS: An additional Way to Hybridisation S. 167-178

„… HoD-drivetrain to decouple the EMG from the driven axle, and Trailer braking system, which ensures safe …” „… the truck to provide visual feedback for the driver. Fig. 4: Logical System Architecture of the …” „… driven axle. The combination of ESU, Inverter and EMG is currently limited VDI-Berichte Nr. 2298 …”

I. Wiesbaum, A. Tillawi Human Machine Interface of the future: Innovative solutions for commercial vehicle’s instrumentation S. 25-40

„… drives activities for trucks, buses, agricultural vehicles, construction machines, two-wheeler and …” „… smartphones, as well as requirements for “Safety, Economy and Networking” will drive the automotive …” „… commercial vehicle market in future. The driver expects a clearly understandable representation of …”

D. Nulens The Future of Telematics – Intelligent Connectivity – A journey to exceptional fleet performance S. 277-290

„… information to all stakeholders of the supply chain about the trucks, trailers, drivers and cargo, in one …” „… single platform. Numerous truck and trailer mounted sensors generate data, which is sent to the back …” „… intelligent vehicle systems that capture and share data − with drivers, fleet managers, 3rd party logistic …”

doi.org/10.51202/9783181022986

VDI Wissensforum GmbH - International Conference on Gears 2022

Kein Zugriff

Auswählen

VDI Wissensforum GmbH (Hrsg.)

International Conference on Gears 2022

Reihe: VDI-Berichte

Band 2389 2022

Treffer in den folgenden Teilen:

C. M. Illenberger, T. Tobie, K. Stahl Operating behavior and performance of oil-lubricated plastic gears S. 1117-1132

„… are constantly expanding their areas of application and market share in the field of drive technology …” „… . In contrast to the earlier period when drives in domestic products or aux-iliary drives were mostly …” „… transmitted drive power and the coefficient of friction prevailing in the tooth contact, the lubrication …”

A. Turich Gear hard finishing with up to 100% in-process inspection S. 1583-0

„… e-drive transmissions, are leading to even tighter tolerances. This vicious circle puts statistical …” „… of statistical process evaluation while – at the same time – making way to inspect each single gear …” „… .). This situation is aggravated by the fact of increasing quality demands especially with e-drive gears …”

S. Ebrahimi, J. Langhart, D. Marano NVH calculations for drivetrains, a methodology for selection of the best suitable calculation approach for a specific purpose S. 75-90

„… , a two-stage powertrain model powering the front wheels of an electric vehicle is considered as a …” „… between tooth mesh and the structural behavior of the drive train characterizes the noise and vibration …” „… can be used in the case of EV drives and the effect of various microgeometry gear modifications on …”

W. Wagner, S. Schumann, B. Schlecht Enhanced loaded tooth contact analysis of hypoid gears within a multi-body-system simulation S. 357-370

„… with a significant smaller contact point count. Introduction Gear drives of various power classes are …” „… used in the drive trains of machines and vehicles. Depending on the torque to be transmitted and the …” „… single point load, acting on the contact line. Combined with additionally computed non-linear contact …”

A. Baumann, B. Bertsche Coefficient of friction behavior of gear oils and significance for the meshing process of spur gears S. 745-762

„… . From the start of the meshing (point (A), tooth root area of the driving wheel/tooth tip of the driven …” „… wheel) to the pitch point (C), due to the larger speed component of the driven wheel perpendicular to …” „… wheel and at the tooth tip of the driven wheel (comparable to point (A) in Fig. 1). At low average …”

Titelei/Inhaltsverzeichnis

„… strengthGear root bending strength: statistical treatment of single tooth bending fatigue tests results …” „… fatigue lives from single tooth bending and rotating gear tests …” „… hardened gears in electrical drives …”

J. Furst, F. Joachim, C. Gosselin, J. Thomas Improved design and manufacturing of face gears S. 1461-1466

„… can be implemented in a simple way. Table 1: Advantages of face gears angular drives A single long …” „… . Franz Joachim, Balance Drive AG, Schmitten, Switzerland; Claude Gosselin, P.Eng., Ph.D., Involute …” „… thinking of right-angle gearboxes, most technicians cannot yet imagine completely new drive possibilities …”

B. Reetz, T. Munch, W. Kappeler Challenges for lead-free brass alloys in worm gears S. 1467-1488

„… flank. Strength against fracture at the tooth root is also very important. In worm drives different …” „… to increasing wear under high loadings. This wear is further driven by the generation of friction …” „… self-locking. This means that it is virtually impossible for a worm wheel with force applied to it to start the …”

K. Daubach, M. Oehler, B. Sauer Wear simulation of worm gears based on an energetic approach S. 329-342

„… wheel has an effect on the flank pressure distri-bution within a single mesh position. During running-in …” „… the modified tooth flank geometry of the worn worm wheel, in order to consider the influence of wear …” „… of the gears in a single gear stage. The smooth operation is given by a relatively high contact ratio …”

P. Roth, M. Hein, K. Stahl Scuffing load capacity calculation of worm gears S. 811-824

„… as shown in fig. 1, is growing. Worm gear drives with worm wheels made of harder materials are …” „… Abstract Worm gears with wheels of harder materials, such as cast iron or steel, are often prone to the …” „… be used to rate the scuffing load capacity. 1 Introduction Worm gear drives realize high gear ratios …”

A. Alnahlaui, P. Tenberge Improved method for the determination of tooth root endurance strength S. 31-44

„… applications is driven by a continuous striving for increased functionality and power density at the lowest …” „… targeted testing of gear drives also involves a great amount of effort and uncertainties. Due to economic …” „… capacity of machine elements and especially of gear drives is specified in the context of fatigue strength …”

M. Zalfen, J. Lovenich, O. Malinowski, C. Brecher, J. Brimmers, S. Neus, S. Stark, D. Kruger Test rig concept for high power VHCF gear testing S. 485-498

„… with N < 107 failures often start at the surface or at single macro inclusions, in the VHCF regime very …” „… , sealings, the load application as well as the drive train. In the second step, the test rig concept is …” „… the test gear, the gears are constructed as a triple-shaft gear chain, whereby the wheels of the test …”

J. Thomas, C. Gosselin, F. Mieth Design, strength calculation by ISO10300 and loaded TCA of forged differential bevel gears S. 157-170

„… driving wheels. These gears can be produced by several cutting methods, but forging is the preferred …” „… „Forschungsvereinigung Antriebstechnik e.V. (FVA)“ VDI-Berichte Nr. 2389, 2022 1571. Introduction Driven axes require a differential gearset to balance the speeds …” „… of the two output axles when cornering. If two driven axles are combined, then another differential …”

B. Legrady, M. Taesch, G. Tschirschnitz, C. F. Mieth Prediction of churning losses in an industrial gear box with spiral bevel gears using the smoothed particle hydrodynamic method S. 651-664

„… solutions but also hydrogen or e-fueled concepts thrive. Regardless of the final solution, drive train …” „… the drive train components. The lubricant itself is a resistance for the rotating parts. Emerging …” „… inertia of the oil by pressure and viscous forces acting from the fluid towards the wheel. Squeezing …”

L. Maccioni, F. Concli, C. Paschold A Novel Concept of Nested Cycloidal Speed Reducer S. 969-984

„… dimensions of a single-stage one [3] (for the same power rating), i.e. Wolfrom-based cycloidal gearbox. This …” „… number of meshing features, i.e. lobes-rollers for cycloidal drive and tooth-tooth for gears [6]. The …” „… teeth Pinion / wheel z1 / z2 - 16 / 24 35 / 43 29 / 36 Normal module mn mm 4.5 2 2.44 Normal pressure …”

L. Hildebrand, F. Dangl, M. Sedlmair, T. Lohner, K. Stahl CFD analysis on the oil flow of a gear stage with guide plate S. 677-694

„… setups were carried out with focus on the oil flow and no-load gear loss of a dip lubricated single …” „… single-stage FZG test gearbox as used previously by Liu et al. [24], [25]. The test gearbox has a width of 260 …” „… pinion and wheel, holes with a diameter of 8 mm in the guide plate enable oil to flow VDI-Berichte Nr …”

F. Lagier, A. Bischofberger, K. Bause, S. Ott Suitability of additive manufactured PEEK gears as a means of gear sampling for automotive high-speed gearboxes S. 1045-1060

„… stage, as well as the residual drivetrain up to the contact of the wheel with the road, have to be …” „… Abstract The use of high-speed drives up to 30,000 rpm makes it possible to increase the power den-sity of …” „… drive systems. By reducing the inertia of rapidly accelerated components, the con-sumption of such drive …”

M. Furst, J. Gotz, M. Otto, K. Stahl Automation of gearbox design S. 787-802

„… and gear wheel bodies. Starting with only few input parameters, a detailed shaft geometry with …” „… dimensioning of the wheel body, the service life calculation of rolling element bearings and the selection of …” „… integration of CAD/CAM systems into the design and optimization process of single-stage high-speed gear units …”

P. Rodel, R. Spieler, M. Indenbirken, T. Nuisl Holistic friction optimization of transmissions – a significant contribution for sustainability S. 731-744

„… analytical friction model developed by Schaeffler is based on physical principles. The single contacts are …” „… for both bearings and gear tooth contacts and has been validated for single bearings as well as entire …” „… industrial economy worldwide. Outstanding innovations in power sector, industry, and mobility are driven by …”

K. Stahl, T. Tobie, C. M. Illenberger Standardized methods of load capacity calculation of plastic gears S. 1173-1180

„… show a trend towards applications with higher drive power. In the automotive sector, in addition to a …” „… large number of electric actuators driven by plastic gears, safety-critical applications such as braking …” „… and steering systems are increasingly equipped with plastic gears. In the drive unit of e-bikes …”

G. Hlebanja, M. Hriberšek, M. Erjavec, S. Kulovec Influence of the tooth flank shape on wear for a steel-POM gar pair S. 1295-1304

„… curvature of the driven gear in the vicinity of meshing start point, which implies high sliding velocities …” „… the longer contacting area of the driven gear. The friction force grows to high levels already at the …” „… frictional work in a single pinion rotation amounts to ? ∙ ? , and multiplied by the rotational frequency …”

A. Mihailidis, A. Psarros, I. Nerantzis FE tooth contact analysis of crossed helical gear drives considering misalignments and deviations S. 597-608

„… FE Tooth Contact Analysis of Crossed Helical Gear Drives Considering Misalignments and Deviations …” „… , Greece Abstract Crossed helical gear drives are easy to produce, they offer power transmission in …” „… are the main reason why such gear-drives are widely used in actuators. The nominal contact …”

J. Gotz, F. Siglmuller, M. Furst, M. Otto, K. Stahl Experimental investigation of the dynamic load sharing of planetary gearboxes S. 409-420

„… design of the single tooth meshes without load increases and oversizing. However, due to manufacturing …” „… the rigidity of shafts, housing and bearings, the number of planets, the quality of the gear wheels …” „… high-speed applications and form essential drive trains. In this study, the load sharing behaviour of such a …”

F. Eigner, S. Heinrich, M. Berger An approach on contact analysis for micro geometry optimization of the gear unit HypoGear S. 943-950

„… of the main assemblies. In addition to the drive assembly, there are intermediate assemblies and an …” „… hyperboloid single shells with a common contact line are calculated, named as rolling bodies. The two bodies …” „… also be determined which gear is the drive gear and which is the driven gear. This determines which …”

H.-J. Dennig, L. Zumofen, A. Kirchheim, S. Winterberg, D. Stierli Increasing the safety against scuffing of additive manufactured gear wheels by internal cooling channels S. 1345-1364

„… Increasing the safety against scuffing of additive manufactured gear wheels by internal cooling …” „… basic shapes are also possible. Depending on the positioning of the gear wheel in the manufacturing …” „… serial arrangements and the test setup with a test gear wheel …”

Y. Marchesse, M. Ruzek, F. Ville, P. Velex On windage power loss reduction achieved by flanges S. 665-676

„… different wheels can be mounted but, for the purpose of the present study, only one single gear is …” „… order to investigate the power loss reduction when either one single axial flange or two axial flanges …” „… three-dimensional domain is considered and comprises one single tooth and the associated fraction of the blank …”

J. Hochrein, M. Trubswetter, M. Otto, K. Stahl Direct flank geometry calculation for face gears S. 1447-1460

„… found in literature, for example in a longitudinal differential for all-wheel drives [1] or in a …” „… , Garching Abstract Face gear drives with a 90° shaft angle represent special types of angular gear units …” „… cutting machines [22]. Mainly auxiliary drives use face gears, but also a few power transmissions are …”

A. Eric, D. Olveda, T. Froschmeier, V. Schulze Local pitting fatigue concept with EHL simulation for case hardened gears in electrical drives S. 133-144

„… Local Pitting Fatigue Concept with EHL Simulation for Case Hardened Gears in Electrical Drives A …” „… resulting damage equivalent local stress in the subsurface area between the start of single tooth contact …” „… .  Pittings always occur in the area of single tooth contact below the pitch point. VDI-Berichte Nr. 2389 …”

D. Mevissen, L. Uhlmann, U. Kupper, J. Brimmers, T. Bergs Analysis of friction of bowl-shaped surface structures resulting from alternative gear manufacturing processes S. 1371-1382

„… flexibility and cost reduction because special manufacturing tools such as hobs or grinding wheels for a …” „… hobs or grinding wheels for a certain module are not required [3]. Furthermore, the machine hammer …” „… varying the distance between the single dents. After manufacturing of the test parts, the measurement of …”

W. Kassem, M. Oehler, B. Sauer, S. Schmidt, J. Hausmann Investigation of the time-dependent behavior of plastic gears with local tribological simulation S. 1281-1294

„… . Introductions Plastic gears have been used since the mid-20th century in low-load drives such as in watches …” „… in the following study. Here the output torque ? and the drive speed ? is given for the driven …” „… size 2 Output torque ? Nm 53 10 Output drive speed ? U/min 100 400 Gear meshing temperature …”

D. Drummer, D. Schubert, C. Herzog In situ measurement of geometric and structural influences on the operating properties of polymer gears S. 1099-1116

„… maintenance and repair cost by monitoring the health of a critical system [9], e.g. a gear drive. In condition …” „… critical gear drives health can be built, using easily available vibrational data [12]. However, the …” „… 1 mm, were chosen for this research to represent a typical gear size in actuating drives, see Table …”

A. Sitzmann, T. Tobie, K. Stahl, S. Hoja, S. Schurer Deep nitriding – contact and bending strength of gears with increased nitriding hardening depth S. 875-890

„… connected to a drive gear stage with the same gear ratio. The shaft of the test pinion consists of two …” „… shaft. A three-phase asynchronous engine drives the test rig. [9,13,17] 3.2 Test Gears and Test Variants …” „… relief of Ca = 40 μm on the pinion and wheel in order to avoid a reduction in the gear quality and …”

B. James Developing a digital thread linking gear design to manufacturing simulation and metrology S. 185-196

„… being designed was not a „critical“ application, being a single gear pair needed for a test rig. Actual …” „… 1: Gear macro-geometry Pinion Wheel Number of teeth 21 63 Normal module 1.5 Pressure angle 20 …” „… ° Helix angle 25° ISO 1328 Grade 5 Table 2: Gear micro-geometry Pinion Wheel Left Right Left Right …”

E. Lothman, M. Hein, U. Steiner Increased load carrying capacity of gears through optimized steel performance, surface conditions and processes S. 637-650

„… order to achieve stable tooth gap shapes, the grinding wheel is dressed up with a dressing roll before …” „… . After the grinding process, the wheels are brushed in order to avoid sharp edges. 4. Surface treatment …” „… After gear grinding, the wheels are treated with a shot peening process developed through Humbel, the …”

doi.org/10.51202/9783181023891

VDI Wissensforum GmbH - Gießtechnik im Motorenbau 2023

Kein Zugriff

Auswählen

VDI Wissensforum GmbH (Hrsg.)

Gießtechnik im Motorenbau 2023

Reihe: VDI-Berichte

Band 2410 2023

Treffer in den folgenden Teilen:

P. Grzeschik, M. Schwaderlapp, A. Plumpe Sustainable Drivetrains for Non-Road Mobile Machinery The DEUTZ TCG 7.8 H2 Hydrogen Combustion Engine S. 91-108

„… , 45% will arrive on the wheel using electric drive considering battery charging and decharging losses …” „… electric drives or fuel cells for Sustainable Drivetrains for Non-Road Mobile MachineryThe DEUTZ TCG 7.8 H2 …” „… reasonable to promote electric drivetrains for transport.Figure 5: Well-to-wheel analysis for electricity …”

doi.org/10.51202/9783181024102

VDI Wissensforum GmbH - LAND.TECHNIK AgEng 2019

Teilzugriff

Auswählen

VDI Wissensforum GmbH (Hrsg.)

LAND.TECHNIK AgEng 2019

Reihe: VDI-Berichte

Band 2361 2019

Treffer in den folgenden Teilen:

S. Pfaffmann, F. de Moraes Boos, N. Tarasinski, V. Kegel Swarm Unit – Development of a Fully Electric Agricultural Machine with External Power Supply S. 401-408

„… , represents the core of a tractor. The drivetrain of the single axle Traction Unit is then completed by …” „… , the Traction Unit can be outfitted with either tracks or wheels. Fig. 3: Drivetrain overview …” „… available to an electrically driven rotary harrow (power offboarding), which brings the overall power of …”

M. Sax, R. Latsch, T. Anken, V. Moser, P. Krummenacher Automated site-specific overseeding of grassland S. 165-228

„… ECUs in a hardware-in-the-loop simulation and as well as HMI elements in a driver-in-the-loop …” „… accordance with the working width of the eight single seeding valves. Within each square the percentage of …” „… enough to avoid seed blockage inside the hoses. The electronic power driver of the valve actuator has …”

T. Fedde, M. Peeters, R. Stirnimann Soil pressure and pulling behavior of standard and half-track tractor chassis concepts S. 35-46

„… standard tires. Also in comparison to a triangle track system with positive drive principle the soil …” „… load tables of the tire manufacturer. For concept comparison with a positive drive triangle track …” „… applications by 1.800kg at the rear. The front weight was calculated to reach a 35/65 balance for the wheel …”

G. Molari, M. Mattetti, M. Varani, F. Paolini, S. Fiorati, P. Mancinelli, K. Štefek, C. Di Dio Field performance of Trelleborg PneuTrac tyres S. 57-62

„… Dio, Trelleborg Wheel Systems, Tivoli, Italy Abstract Tractors have become heavier and more …” „… compaction. Nevertheless, in the last 50 years, wheel load has increased more than twice the tyre-soil …” „… footprints, like dual tyre configuration, single belt rubber tracks, low-pressure tyres and triangular …”

M. Piechnick Multi-domain simulation of agricultural system solutions S. 281-288

„… hydraulic drives, control and automation, sensors and process variables up to the networking of different …” „… . In the field of drive, control and automation technology one can find primarily software tools based …” „… single tools happens in the clock rate of the master tool. Out of domain specific numerical reasons, the …”

T. Herlitzius, H. Fichtl, A. Grosa, M. Henke, M. Hengst Feldschwarm – Modular and Scalable Tillage Systems with Shared Autonomy S. 409-420

„… distributed drives on implements allowing speed variable active tools or single driven wheels up to a level …” „… self-propelled systems working as single unit or in a swarm. Swarm operation requires an adaptive and multimodal …” „… moved towards self-propelled concepts yet, which is going to drive the question if there is a …”

S. Liljenberg, M. Frederiksen, T. H. Langer Methods to evaluate steering performance of agricultural tractors S. 29-34

„… , hoses, front wheel drive and every little detail can have a significant impact on the perception of the …” „… repetitive testing and eliminates the variation imposed by test drivers, thereby reducing the number of …” „… tractors to drive on public roads for both farmers and contractors. VDI-Berichte Nr. 2361, 2019 29 Surveys …”

B. Yanke, M. Vandeven, D. Bomleny High Capacity Draper Header – Development of a high capacity draper header for a new generation of combine harvesters S. 527-536

„… foremost importance for these wider heads – which has driven the development of hinged frame draper …” „… DSM on the known product line required inputs for gage wheel positions, wheel float spring rates, and …” „… plots enabled the team to understand the impact that a single parameter had on performance – which …”

P. Sivasothy, G. Bulun, J. Seewig, J. Imwalle Implementation of a Dynamic Product Development Method for Agricultural Engineering Based on Virtual Prototypes S. 273-280

„… single ownership of a machine. Rather, the price is linked to the benefit, i.e. the availability of the …” „… shown in Fig. 1 b)). The conveyor belt is moved by a form-fit drive. Internal investigations of the …” „… two gear wheels which have a relative rotational offset to each other when the sensor is in contact …”

doi.org/10.51202/9783181023617

Michael Aeberhard - Object-Level Fusion for Surround Environment Perception in Automated Driving Applications

Teilzugriff

Auswählen

Michael Aeberhard

Object-Level Fusion for Surround Environment Perception in Automated Driving Applications

Reihe: Verkehrstechnik/Fahrzeugtechnik

Band 804 2017

Treffer in den folgenden Teilen:

Introduction S. 1-26

„… the driver keeps his/her hands off the steering wheel for too long. New advanced park assist systems …” „… comfort system is cruise control, which allows the vehicle to maintain a driver-defined speed by …” „… intervention of the driver have the potential of eliminating all driver-related accidents which are common …”

doi.org/10.51202/9783186804129

1 ...

6

7 8 ... 25