Predicting mobility in military operational scenarios U.S. Army leads a seven-year, multinational effort to develop new off-road vehicle mobility analysis methodology. Hitting the gas on hydrogen tech OEMs and global suppliers still are betting big on hydrogen propulsion as a solution for decarbonizing the heavy-duty trucking industry. BEV truck manufacturers charge ahead Several companies announced new product offerings and prototypes of BEVs at the NTEA Work Truck Week in Indianapolis. Editorial Maintaining EV chargers yet another challenge Precision tech the 'backbone' to CNH's digital strategy Purdue prototypes new EV fast-charge cable 3DEO unveils metal 3D-printing platform for mass production Paccar launches new 18-speed automated transmissions Lightning's eChassis targets commercial EVs Quantron launches 12-m battery-electric bus; fuel-cell variant to follow Q&A Chemours' Christina Spalding shares insights on the commercial-vehicle industry's shift to R-1234yf HVAC refrigerant.
Hydrogen generates buzz in power generation Companies target stationary power applications to prove their hydrogen technology and to build scale until infrastructure expands for mobility. 'Mixed' approach to e-truck manufacturing Volvo Group CTO details the OEM's "mixed model assembly" strategy for battery and fuel-cell electric vehicles and provides insights on infrastructure and the transition to autonomous. Innovation at the intersection of disciplines Caterpillar alum Sri Srinath, Ph.D., focuses on more collaboration and mentoring in his new role as 2022 SAE International president.
Battery of issues surrounds large-vehicle electrification Converting heavy-duty vehicles to battery power will require advances in weight reduction and thermal management. Autonomy kicks up some dust Machines that move, haul and plow earth can capitalize on autonomous systems today via increased safety and productivity in the field and significant cost savings. Digitalizing to deliver actionable data Mobile hydraulics expert details key trends in controls and IoT connectivity to improve machine design and end-user operations.
Steel sector aids sustainability Volvo Group partners with SSAB on 'green steel' for off-highway machines and with Ovako for access to fossil-free hydrogen. CV autonomy: Picking the 'low-hanging fruit' Increasingly automated commercial vehicles offer challenges and opportunities in simulation, data management and standardization. Developing EV-specific lubes As electric-vehicle technology accelerates, dedicated e-fluids are necessary to maintain proper levels of drivetrain performance. Editorial Real-world emphasis on electric Mahle, Liebherr develop active pre-chamber for hydrogen ICE ABS ramps up commercial-vehicle battery-pack assembly Navistar updates A26 engine, improves FE by 4% Bosch debuts new CV-specific electric motor and inverter Western Star adds 'weight sensitive' 47X to vocational lineup Hyundai CE launches next-gen electric forklift Q&A Mahle's Laurent Art discusses thermal-management challenges, solutions for battery and fuel-cell electric commercial vehicles.
Material selection for battery enclosures Mass reduction is the main reason BEV makers choose aluminum for battery enclosures, but cost and thermal requirements favor steel and polymer composites. Startup targets medium-duty EVs Atlis Motors purpose-engineers nearly all the vital components for an electric pickup and platform capable of spanning several market segments. High-voltage hybrids FEV engineers evaluate 48V and high-voltage parallel hybrid architectures for Class 6-7 commercial vehicles. Certain setups show more promise than others. Hemphill's mission: Support the innovation ecosystem Schaeffler America CTO Jeff Hemphill brings impressive technical chops and well-honed communication skills to his new role as 2021 SAE International president.
Bigger processors, smaller engines Engine designers are using electronics, networks to downsize engines while upping performance, efficiency and NVH characteristics. A testing powerhouse Allison Transmission's new Vehicle Environmental Test center in Indianapolis is open for business for external and in-house customers alike. 'Revolutionizing' digital hydraulics Volvo CE teams with Norrhydro to commercialize an advanced electro-hydraulic system that promises fuel-efficiency gains of up to 50%.
ICE advances Engine developers employ revised electronic architectures, mechanical tweaks to boost fuel efficiency, performance of internal-combustion engines. Autonomous construction sites Equipment makers are testing the emerging technologies required to advance automation beyond individual machines. Modeling electric motors How to develop a traction drive using a multiphysics-based approach with 3D modeling and simulation. Solving the "telehandler problem" Two-stage overcenter valves create stability in machines with highly dynamic loads. Engineering the world's fastest tractor JCB worked with design and engineering specialists to build a spectacular speed record-breaker that topped 150 mph.
Big future for e-axles, advanced motors Top transmission engineers claim driveline electrification will transform everything from all-wheel drive to Class 8 tractor-trailers. Big data's benefits keep a-comin' Gigabytes of data are being collected and increasingly mined to improve field operations, maintenance and even vehicle design. Transformative times Despite a challenging climate, technology development progresses - as does the sharing of innovative ideas - virtually. Editorial Zeroing in on zero emissions Softing envisions secure, reliable predictive maintenance Reconstructing accidents in the ADAS age Paving the way to improved truck fuel efficiency Nikola looks to accelerate production, hydrogen infrastructure Mecalac designs unique-pivoting swing loader Q&A' Horiba's Joshua Israel discusses complex regulatory landscape's impact on commercial-vehicle development and shift to electrification.
Shifting design of autonomous architectures Electronic controls centralize while providing commercial-level reliability. Next steps toward battery-electric Class 8 trucks Employing a common architecture and shared technologies allows Volvo Trucks to speed up electric-truck conversion, but battery technology and infrastructure still prove challenging. Moving metal AM forward Additive-manufacturing system providers still see technical and throughput challenges, but significant developments and market inroads will be made in 2020. ConExpo roundup New equipment launched in Las Vegas ranges from small electric machines to large next-gen excavators and everything in between.
Embedded systems help drive autonomy forward Kontron provides high-end knowledge for image processing, analysis with fewer control modules. Open approach to propulsion Deutz CEO sees combination of sustainable-fuel combustion engines and electric drive systems powering the off-highway market. Increasing connectivity, leveraging intelligence Parker Hannifin expert discusses IoT for mobile equipment and moving beyond standard telematics by integrating systems controllers and smart components. Cummins, Tula test 'dynamic' cylinder deactivation Tula's Dynamic Skip Fire technology already used in light-duty gasoline engines shows potential in heavy-duty diesels to significantly reduce NOx emissions. Supplier Directory Complete listing of industry suppliers categorized by technology area.
This book presents a theoretical treatment, as well as a summary of practical methods of computation, of the forces and moments that act on marine craft. Its aim is to provide the tools necessary for the prediction or simulation of craft motions in calm water and in waves. In addition to developing the required equations, the author gives relations that permit at least approximate evaluation of the coefficients so that useful results can be obtained. The approach begins with the equations of motion for rigid bodies, relative to fixed- and moving-coordinate systems; then, the hydrodynamic forces are examined, starting with hydrostatics and progressing to the forces on a moving vehicle in calm water and (after a review of water-wave theory) in waves. Several detailed examples are presented, including calculations of hydrostatics, horizontal- and vertical-plane directional stability, and wave-induced motions.
This SAE Surface Vehicle Electromagnetic Compatibility (EMC) Standards Manual provides a comprehensive compilation of the SAE documents pertaining to the measurement of electromagnetic characteristics of vehicles, motorboats, agricultural machinery, earthmoving machinery, and other internal-combustion- engine-driven equipment. The documents also apply to electrically driven vehicles including boats, golf carts, and similar equipment. (Aircraft, trains, and electric trolleys are specifically excluded.)
This edition of HS-1738 provides requirements and recommendations relating to the electrical equipment of machines so as to promote safety of persons and property, consistency of control response, and ease of maintenance. Although it is desired that high performance be achieved, the above mentioned essential factors should not be compromised.
The J1939 Handbook Supplement is a set of Recommended Practices defining a data network for use in a wide variety of applications, with primary emphasis to date on heavy-duty vehicles. It was designed to support general-purpose information transfer as well as the more demanding tasks of distributed control systems on board a vehicle. The top-level document provides an overview and serves as a master control for common definitions used by multiple applications and industries. The J1939/0X documents define the use of these standards in a particular application or industry, allowing J1939 to be tailored as needed without having to include definitions that do not apply. The intent of J1939 is to allow 'plug and play' capability for any device that is added to the network.
The AVL International Commercial Powertrain Conference is the premier forum for truck, agricultural and construction equipment manufacturers to discuss powertrain technology challenges and solutions across their industries. The topics of the conference, which happens every two years, cover all five elements of a modern powertrain: engine, transmission, electric motor, battery and the electronic control which are used basically the same way in the quest for optimal efficiency and environmental compatibility. This event offers a unique opportunity for highly regarded professionals to address the synergy effects and distinctive characteristics of commercial vehicles, agricultural tractors and non-road vehicles, and industrial machinery. These proceedings are being co-published with SAE International, via a strategic partnership.
Writing in 1901, the futurist H. G. Wells predicted not only the decline of railways but the rise of the “motor truck” – a term unfamiliar to most readers at that time. Wells foresaw “large carrier companies” with fleets of horseless vehicles “to carry goods in bulk or parcels.” At the turn of the 20th century, colossal railroad companies ruled long-distance “land locomotion.” And the prospect of commercial life without draft horses seemed about as likely as Martians invading Earth – a story Wells had published four years earlier. But only one year later, ironically in a horse barn near a Chicago tannery, an ex-bicycle maker named Magnus Hendrickson began assembling Wells’ vision. This would become a decades-long undertaking to divine, design, build, continuously improve and ultimately perfect what makes a truck a truck – not simply a bigger car. Along the way, Magnus and his sons founded The Hendrickson Motor Truck Company, which in 2013 celebrated 100 continuous years of operations.
Safe and sensitive Sensor fusion is the latest data sharing scheme for improving the performance of safety systems. BMW counts down to 1 Series The company's latest entry in the premium compact segment comes to market with rear-wheel drive, 50:50 weight distribution, and longitudinally mounted engines headlined by a powerful turbodiesel. Chevrolet re-engineers Corvette Although the new C6 is shorter and narrower than its predecessor, engineers wanted "more power, more passion, more precision" for the two-seat sportscar. 2005 Honda Odyssey The completely re-engineered model features new technologies from the inside out related to safety, performance, and entertainment. Chrsyler 300 / Dodge Magnum The "it" vehicles for the 2005 model year feature advanced technologies such as cylinder deactivation to go along with Hemi power and distinctive styling. Ford makes space for family vehicles Volvo donates its P2 platform for the new Ford Five Hundred, Freestyle, and Mercury Montego.
The need for speeds The recent automatic-transmission introductions by Toyota, DaimlerChrysler, and ZF highlight the trend toward greater gear-ratio spreads for better launch performance and cruising efficiency. Mechanical advantage Ride and handling can be influenced and controlled by the latest electronics, but careful mechanical design of the suspension can deliver significant benefits. Hard drives Driven by the insatiable demand for more usable navigation information and entertainment content, automotive disk drives will become commonplace, but not until cost and other issues are overcome, experts predict. Trucks get aerodynamic touch Light truck and SUV designers must reconcile conservative customer tastes with the need for reduced drag to bost efficiency. Pedestrian protection possibilities Carmakers consider a variety of solutions to the problem of saving lives outside the vehicle.