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SAE Truck & Off-Highway Engineering: December 2021

2021-12-02
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.
Magazine

SAE Truck & Off-Highway Engineering: April 2021

2021-04-01
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.
Magazine

SAE Off-Highway Engineering 2005-04-01

2005-04-01
Hydrogen possibilities Using hydrogen in an internal-combustion engine application requires not only a custom-engineered combustion concept, but also optimized operation strategies. Nets catch on Engineers have been slow to adopt networks, but that is changing quickly as electronically controlled engines take hold. Hydraulic matters There is much potential for gain for everyone if OEMs and suppliers work together early in terms of hydraulic system design. Asia hot on new cooling technology Not tied as much to aluminum as is the West, china and Russia are moving fast toward widespread use of copper and brass for radiators. Build, test, teview, and improve SAE 100 Future Look; Frank Perna, Chairman and CEo of MSC. Software writes about his experience in vehicle engineering, testing, and management positions.
Magazine

SAE Off-Highway Engineering 2008-09-01

2008-09-01
Shrinking hydraulics The push to conserve fuel and reduce emissions is prompting major changes in system design. Aftertreatment temperature control Regeneration of a DPF burns off soot, but also raises exhaust gas temperature. Speed thrills: doing more tests in less time Quicker data gathering, simulation keep quality high despite time crunch. Green engineering The quest to alleviate environmental and efficiency pressures turns up 'small' material solutions with big benefits. A global forum Cummins executives lay the groundwork for a lively and informative discussion at this year's Commercial Vehicle Engineering Congress & Exhibition.
Magazine

SAE Off-Highway Engineering 2005-03-01

2005-03-01
Engine electronics come of age Changes in global standards, combined with engineering know-how, have resulted in a new generation of clean, quiet, and efficient engines. Operators are rolling in the chips Microprocessors and sensors are being combined to monitor the way that equipment is being used, then help operators to perform better in that environment. Gaining weight Perkins' influence in the off-highway industry grows as it evolves its global engine lines and expands its presence in the U.S. What's new at CONEXPO-CON/AGG, Part 2 of 2 A preview of some of the products and technologies that will be displayed at this year's event, scheduled March 15-19 in Las Vegas, NV. Engineering a career Off-highway companies are challenged not only by the ever-changing technology landscape, but also by finding the engineering talent to help them succeed in it.
Magazine

SAE Off-Highway Engineering 2009-06-01

2009-06-01
The diesel engine diet Researchers correlate engine performance and durability with the properties of alternative fuels that consist of vegetable oils and animal fats. Looking at a safer future Software, other sensors will augment cameras as safety's role in the off-highway industry takes an upward spiral. Plastics expand their range From high-speed train exterior panels to powertrain components, plastics and composite materials are finding their way into more off-highway applications.
Magazine

SAE Off-Highway Engineering 2010-06-03

2010-06-03
Developing next-generation biofuels Spurred by concerns over national security, future supplies of petroleum, and greenhouse gas emissions, many are looking for fuel from biological renewable sources. Control strategies take many paths I/O, EMC, and SIL are among the acronyms transforming controller development. Lean, green, and marine Following the lead set by road and air transportation, sea vessels are turning to increased amounts of composite materials in their construction.
Magazine

SAE Off-Highway Engineering 2011-02-04

2011-02-04
A quiet revolution Optimizing design, while minimizing NVH, in off-highway equipment and systems. Inferential sensing Engineers propose an onboard electronics hardware and software architecture that can deliver condition-based maintenance solutions in a low-cost platform. Lightweight but heavy duty A look at the design, analysis, testing, and application engineering performed to develop a selectively reinforced brake drum made of aluminum metal matrix composite. Shifting gears smoothly Ric Kleine, a 30-year veteran of Cummins Inc. and former SAE Commercial Vehicle VP, seeks continuity over change as he moves into SAE's driver's seat.
Magazine

SAE Off-Highway Engineering 2000-09-01

2000-09-01
Simulating air-conditioning performance A computer program developed by Modine Climate Systems and Modelogics helps determine and optimize air-conditioning system performance. Reduced mass haul-truck design concepts Liebherr Mining trucks adopted a reduced structural mass approach to convert unladen weight directly into payload, while simultaneously incorporating state-of-the-art driveline technology. Optimizing a tractor frame for improved cabin NVH To address an aging agricultural workforce and modern ergonomic guidelines, researchers at Doshisha University and Kubota modeled medium- and large-sized agricultural tractors to reduce vibration and noise and increase comfort. Applying 3d-CAD to turbocharger development Ishkawajima-Harima Heavy Industries has developed a 3d-CAD system for turbochargers. satisfying requirements for digital mockup development.
Magazine

SAE Off-Highway Engineering 2006-10-01

2006-10-01
Making sense of engines Heavy-duty equipment is known for its ruggedness in harsh environments, but vehicles are not neglecting their sensitive side. The world's fastest digger gets closer JCB's Dieselmax goes 350 mph and teaches engineers much about engine capability, extreme testing, and program management. The whole system, and nothing but the system Properly implemented, an electrohydraulic system can add a great deal of automatic control, advanced performance, advanced diagnostics, and remote monitoring to a mobile application. Regenerative hydraulics The use of multiple hydraulic pumps can satisfy the needs of various circuits in off-highway equipment. The gas is greener Biofuels promise to help reduce petroleum cinsumption and CO2 emissions, but much of the potential depends on production and infrastructure investments. Material returns Effective use of materials information is important to engineers in development of parts and components.
Magazine

SAE Off-Highway Engineering 2003-10-01

2003-10-01
Off-highway CVTs A continuously variable transmission can improve the fuel efficiency of heavy-duty diesels by matching the engine's torque/speed to the applied load through the smooth torque multiplication of the transmission. Hydraulics for economics The design of a digitally controlled hydraulic fan drive from Denison Hydraulics is said to help diesel engines run leaner and cleaner. Telematics boosts productivity Advances in electronic technology enables equipment owners and operators to monitor not only usage, but location of equipment. A dumper on tracks Industrial vehicles featuring composite rubber-tracked drive systems have become increasingly popular over the past 10 years, carving out a respectable niche in many specialized industries.
Magazine

SAE Off-Highway Engineering 2000-12-01

2000-12-01
Lightpipe design According to Breault Research Organization, any off-highway instrument or control that needs illumination is a candidate for a lightpipe to take light from where it is generated to where it is needed. The biodiesel choice Experts from the Natural Biodiesel Board believe it is time to consider alternatives to the current fuel structure. One solution to rising fuel prices is the pursuit of biodiesel fuels. Understanding machining difficulties in gray iron Bosch Braking Systems' engineers look more closely than usual at iron brake rotor samples to give new insights into critical characteristics of the material. Caterpillar mining for customers With commodity prices low, Caterpillar wants to make mining as productive an enterprise as possible for customers.
Magazine

Aerospace Engineering & Manufacturing 2008-12-01

2008-12-01
From part to plane: the fastest machine wins Next-gen machining centers and controllers brings new precision and capabilities to both metal and composite manufacturing. Files moved around the world As aircraft manufacturers distribute more jobs to contractors, streamlining the transfer of information has become an important part of both design and manufacturing. Top technologies of 2008 A look back at some of the most significant technological innovations during the past year. VLJ power Some engine programs for very light jets are full swing while certification awaits others.
Magazine

Aerospace Engineering 2007-11-01

2007-12-01
Cockpit transformation: to the looking glass The changeover to glass cockpits continues to evolve, as system developers devise strategies to give pilots lots of information in easy-to-understand formats. Older-older vs. newer-older: room for both Engine upgrades are expected to provide sufficient return on investment within a reasonable period of time. Top Technologies of the year A look back at some of the most significant technological innovations during the past year.
Magazine

Aerospace Engineering 2005-11-01

2005-12-01
All things to all operators Manufacturers of commercial powerplants simultaneously tackle fuel efficiency, performance, and life-cycle costs. Digital morphs the radio landscapes In the world of aerospace, smaller radios are able to handle a larger number of frequencies. Top technologies for 2005 A look back at some of the most significant technological innovations in the news during the past year, as deemed by readers and editors.
Magazine

AUTOMOTIVE ENGINEERING INTERNATIONAL 2013-10-01

2013-10-01
Chrysler sees the ICE future The three-year, $30 million Multi-fuel Multiair R&D program with the U.S. DOE is nearing completion. Here's what Chrysler Powertrain engineers have learned as they try to achieve a 25% fuel-efficiency gain. Counteracting cyber-attacks As vehicle systems become more complex and interact with more internal and external elements, the potential for outside intrusion and tampering increases for both vehicles and the transportation infrastructure. Kia moves upscale with 2014 Cadenza The all-new premium sedan is the Korean automaker's 'most technologically advanced' vehicle ever on U.S. roadways. 2014 Corvette: 460 hp, 30 mpg, 1 g, $52,000 No other sports car can match the C7's combination of performance, value, and overall efficiency. Chief Engineer Tadge Juechter provides insight on executing a masterpiece.
Magazine

AEROSPACE ENGINEERING 2013-04

2013-04-01
PEFCs to transform UAVs Advancements in polymer electrolyte membrane fuel cells have resulted in longer endurance missions for smaller UAVs as well as an enabler for electric aircraft that require vertical takeoff and landing capability. Hovering aircraft programs The AW609 tiltrotor and the X3 compound helicopter offer different technology solutions to the challenge of achieving higher speeds and higher quality point-to-point air transport.
Magazine

Automotive Engineering International 2008-11-01

2008-11-01
Managing software growth An increased emphasis on modeling and autocoding makes it easier to add software-based features and functions, driving a sea change in the way complex automotive systems are designed. Going beyond Bin 5 and Euro 5 An early look at some of the emissions-control and aftertreatment technologies and tools aimed at helping automakers meet future U.S. and European regulations. Finding flexibility Although automation is important to achieving flexibility, manufacturers cannot neglect product design, manufacturing processes, and personnel. Looking for a little help Automotive companies increasingly look outside, offshore to get complex designs finished quickly. The autonomous future Like it or not, cars that drive themselves are on the horizon. Will you trade control for safety? Dodge Ram A keen focus on fuel economy centers on improved aerodynamics, powertrain efficiency, and weight-reducing technologies.
Magazine

Automotive Engineering International 2007-11-01

2007-11-01
Cadillac CTS GM's all-new global sports sedan makes no excuses in chassis dynamics, body integrity, powertrain performance, premium materials, and overall craftsmanship. Taking control of hybrids Software must monitor and manage many parameters while coordinating the complex operations of the engine, electric motors, and batteries. LIghter, faster, lower cost Ducati's top engineer brought a "maniacal" approach to developing the 1098 superbike. Diesels' brave new year Lean-NOx catalysts, closed-loop cylinder pressure sensing, and homogenous combustion are making "50-states" diesels a reailty. Behind the curtain AEI takes an in-depth look at how the designers and engineers at General Motors took the company's trio of new crossover SUVs from sketchbook to road. Engineering from everywhere With future growth in car and truck sales coming mainly from emerging markets, companies are realigning their engineering operations accordingly.
Magazine

Automotive Engineering International 2009-11-01

2009-11-01
Software shifts into automatic mode Automatic code generation is speeding up development and helping to improve automotive system reliability. Coming out party Plastics abound inside vehicles, but they are increasingly finding new applications outside the cockpit thanks to a heavy push for lightweight solutions. Cutting emissions down to size While the long-term future may deliver an efficient alternative to the internal-combustion engine, a few UK-led projects are tackling short-to medium-term solutions for improving engine-out emissions and efficiency of gasoline and diesel engines.
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