Refine Your Search

Topic

Search Results

Magazine

SAE Off-Highway Engineering 2012-09-06

2012-09-06
The big engine that could With the stringent EPA 2015 regulations on large diesel engines for locomotive, marine, and stationary generator applications, the need for NOx reduction via urea SCR catalyst arises given the proven performance of urea SCR. Monitoring hydraulics Component producers and vehicle service providers offer their views of hydraulic diagnostics as the industry moves toward real-time, intelligent health monitoring, predictive failure software algorithms, and wireless notification. Engine management expands from minute movements to full vehicle Electronic controls grow in complexity as engine designers extend their scope to include hydraulics.
Magazine

SAE Truck & Off-Highway Engineering: December 2019

2019-12-05
Heavy-duty engine design What are the most significant factors influencing the way engine developers approach near-term design and development cycles? Two experts provide their insights from recent programs. Reducing winter range loss for electric trucks Researchers at the Austrian Institute of Technology have developed an air exchange system that's capable of reducing heat load by 37% in real-world tests. Narrower focus, bigger payoff Design teams are targeting focused markets for their commercial electric-vehicle programs to combat challenges like range and infrastructure. Removing complexity for autonomous trucks Narrowing the operating domains for driverless commercial vehicles reduces the requirements of autonomous technology and speeds time to market. Plastics innovations 2019 The 49th annual SPE Automotive Awards highlight the ongoing benefits of lightweight polymers and composites.
Magazine

SAE Off-Highway Engineering 2003-04-01

2003-04-01
Off-highway braking According to Mico, electrohydraulic braking controls can provide improved performance and add system features difficult to obtain with hydromechanical mechanisms. Keeping quiet Targeting off-highway and heavy-truck OEMs, Blachford claims its new acoustics laboratory will offer some testing capabilities previously only available to the passenger-car market. ADT marketing and manufacturing While it is not debatable that articulated dump trucks are a hot commodity, it is debatable how many are technologically unique. Proportional pressure reducing valves Engineers from Thomas magnete have designed pilot valves that work with electrohydraulics to simplify complex machine control systems.
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 2007-03-01

2007-03-01
Putting tractors to the test Southwest Research Institute offers manufacturers a ready-made R&D laboratory and the test programs to push their machines to the limit. Leave the driving to us Military programs explore autonomy to lighten operator workloads. Easy on the operator Off-highway OEMs and suppliers want to make life as easy-and productive- as possible for the people running the equipment. Tough testing for tomorrow's demands The off-highway industry is moving toward a new era of legislation and environmental pressures, making test centers increasingly important.
Magazine

SAE Off-Highway Engineering 2008-03-01

2008-03-01
In search of the perfect burn The simultaneous download pressures on NOx and PM continue to make research into higher injection pressures and alternative combustion solutions such as homogenous-charge compression ignition attractive. One way to stop a train A new self-energizing electrohydraulic brake offers the advantages of hydraulic brake actuation without the disadvantages of a centralized hydraulic power supply. A model combustion: from art to science Analysis tools, advanced hardware provide insight into combustion process, refining the cylinder's 'big bang.' The datalinked vehicle In the fields and on the job site with GPS.
Magazine

SAE Off-Highway Engineering 2009-03-01

2009-03-01
Synchronized driving Tight linkage between engine and transmission increases efficiency. Sensing a change Hydraulic engineers are being pressured to design systems that perform more tasks while taking less space. Steel still king Advanced steels and processes offer better performance and lower cost, particularly in powertrain applications.
Magazine

SAE Off-Highway Engineering 2011-03-10

2011-03-10
Saving space To address packaging constraints in off-highway equipment, engineers developed a fuel vaporizer catalyst that makes for a more compact aftertreatment system. Steering toward safety A look at new technology concepts to overcome design issues inherent in adapting steering angle for heavy-duty applications. A fluid performance Researchers have developed a procedure to measure a fluid's effect on the degree to which mechanical power is efficiently converted to hydraulic power in pumps typical of off-highway applications.
Magazine

SAE Off-Highway Engineering 2006-09-01

2006-09-01
Integration helps fuel push for conservation As rising fuel prices and looming environmental regulations bring fuel economy to the fore, hydraulic system developers are pitching in to improve efficiency and help conserve precious resources. Simulating hydraulic valve pressure drop CFD software is being used more and more frequently during the design of off-highway systems and components. 2006 Commercial Vehicle Congress Preview International Truck and Engine executives head the charge for "positive industry change" at SAE's third Congress for the on-and off-highway communities. Position sensing in machine controls As performance requirements for off-highway equipment become more demanding, the need for greater control of motion and power grows as well.
Magazine

Automotive Engineering International 2000-02-01

2000-02-01
Increasing the hydroforming knowledge base Tube hydroforming has become a viable economic alternative to various stamping and welding processes in automotive applications. Controlling two-stroke engine emissions With the constant rich operation of two-stroke engines, common design criteria for three-way catalysts fail. DaimlerChrysler technical symposium A year after the merger that created the new corporation, engineers from both groups came together to present a unified technical symposium to review the future direction of the new organization. Here are some highlights of the more significant technical developments. Vertical complex-shape headlamp reflectors Another improvement in lighting technology gives designers increased flexibility in vehicle appearance with no loss in lighting performance. Advances in static and dynamic exhaust system seating Major redesign, combined with minor improvements in simple details, returns significant benefits in sealing.
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

Aerospace & Defense Technology: February 2022

2022-02-01
What system Designers Should Know About MOSA Standards Microtube Technology A Catalyst for Next-Gen Aerospace Thermal Control Space Industry Test Challenges Advancing Metrology at Mach Speed Drone Mounted Inspection Breaks Barriers for F-35 RF Technology Helps Connect Avionics Systems Using Open-Cavity Plastic Packages in Avionics Applications Electronic Prognostics - A Case Study Using Global Positioning System (GPS) Prognostic health management (PHM) of electronic systems presents challenges traditionally viewed as either insurmountable or not worth the cost of pursuit, but recent changes in weapons platform acquisition and support requirements has spurred renewed interest in electronics PHM, revealing possible applications, accessible data sources, and previously unexplored predictive techniques.
Magazine

Automotive Engineering International 2013-02-05

2013-02-05
BMW readies mainstream carbon-fiber vehicle structures for MY2014 The partnership with SGL Composites is already making parts for the 2014 BMW i3 and i8. AEI visited the pioneering U.S. carbon-fiber plant and witnessed a potential emerging challenger to aluminum for vehicle lightweighting. Driving a safety 'brake-through' As pressure grows for accident-free travel, EuroNCAP is pushing for widespread adoption of autonomous emergency braking (AEB) systems as a way to avoid accidents caused by late braking or braking with insufficient force. A history of leadership Ten years after completing his term on the SAE Board of Directors, Argonne National Laboratory's Donald G. Hillebrand takes on another role-2013 SAE President.
Magazine

Automotive Engineering International 2013-06-04

2013-06-04
Global Viewpoints - Europe: Smartening up R&D As every aspect of automotive technology makes rapid advances, R&D becomes ever more complex and faces additional pressures on cost and time. In our annual report from Europe, we spoke to very senior executives about their R&D methods and the demanding criteria they face. LEDs light the way for SuperTruck A research team developed a group of low-energy; high-output LED lamps for forward lighting that could be retrofitted into the truck's current incandescent headlamp housing and lens. Plastic proliferation under the hood Plastic components continue to displace metal engine parts because of cost and weight advantages.
Magazine

Automotive Engineering International 2008-07-01

2008-07-01
Motors play an important EV roles Though lithium-ion batteries grab much of the spotlight, improved electric motor technology is crucial in advancing the operation of battery, hybrid, and plug-in electric vehicles. The quality race continues As end-user expectations continue to rise, and pressure on engineering and manufacturing processes spiral, AEI's European Editor interviewed a number of OEM executives for their thoughts on quality and strategies for better vehicles. The real world Convergence 2008 will place emphasis on the challenges of determining and meeting customer needs in creating better electronic systems. A new generation of engine efficiency New technologies help to maximize fuel efficiency, reduce emissions, and deliver market-pleasing performance.
Magazine

Automotive Engineering International 2007-07-01

2007-07-01
Where intelligence goes Changes in distributed or embedded control as well as processor power are altering automotive computing hierarchy. Making chassis magic Nothing beats veteran ride-and-handling engineers in creating a truly integrated chassis. But simulation is increasingly vital to their seat-of-the-pants development work. Mass reduction--the next frontier Automakers turn their attention to reducing vehicle weight in the quest for greater fuel efficiency. Electricity drives forward Continuous advances in component design and integration are helping to overcome cost and performance obstacles. At your service As cost and human-resource pressures mount, testing and engineering outsourcing heats up and alters roles within the industry. Finding the right Formula The University of Wisconsin-Madison won the annual Formula SAE student competition held in Michigan, beating more than 130 other teams aiming to conceive, design, and fabricate the best, small formula-style racing car.
Magazine

Automotive Engineering International 2001-07-01

2001-07-01
Driven to test As automotive manufacturers and suppliers continually attempt to cut costs and reduce development cycle times, outsourcing of testing is becoming more prevalent in the industry. Testing resources This section highlights some of the latest testing products, equipment, and technologies used in sundry automotive applications from the industry's suppliers. Transmission options In this comprehensive review of technology, ZF's Group Vice President for Product Development concludes that the future belongs to automated manual, continously variable, and six-speed automatic and manual transmissions with increased capacities. Automotive moodular developments Engineers from Plastic Omnium Auto Exterieur and Inoplastic Omnium discuss design considerations for front-end module and plastic tailgate concepts. Flexible controls architecture for hybrid-electric vehicles General Motors and Motorola collaborate on a prototype vehicle for PNGV.
Magazine

Aerospace Engineering 2005-09-01

2005-09-01
Advanced materials for manufacturability The big three- aluminum, titanium, and composites- duke it out in the sky. Automation makes big advances Aircraft manufacturers continue to adopt new technologies that improve efficiency, speed up production, and reduce worker injuries. Electric braking debuts in military and commercial applications SAE 100 Future look: Goodrich led the development of electromechanical aircraft braking with a highly focused team of experts from three divisions within the company, each working in their own fields of expertise: braking performance, electronic controls, and electromechanical acutators (EAs). Looking into the future with NDT SAE 100 Future look: The need for systemized inspection inthe aircraft industry did not arise until the dramatic increase in air travel that took place in the late 1940s. Electronic warfare SAE 100 Future look: Today's combat aircraft commonly use electronic warfare (EW) receivers and jammers for self protection.
Magazine

Automotive Engineering International 2007-04-01

2007-04-01
Spec Formula One The series is moving forward with new rules to reduce cost and make racing more directly relevant to road-car development. Adding foresight Radar and cameras will work together to help drivers avoid accidents. Lexus LS 460:AEI's Best Engineered Vehicle for 2007 The fourth generation of Lexus' global flagship sets new standards in engineering, technical innovation, refinement, and workmanship. Hot off the grid New interest in plug-in hybrids has sparked intense R&D in battery chemistries and systems integration. Digital developments Ever-improving computer-based tools are helping engineers complete more complex designs in shorter time frames with downsized staffs. Illuminating technology Sensor-linked lighting systems, automatic high-beam control, LED headlights, and brand-identifying cabin lighting are enhancing safety, convenience, and the feel-good factor.
Magazine

MAY/JUN 2013 AUTO DESIGN

2013-06-01
Valve controls Imagine a valve control system that is infinitely variable irrespective of engine speed and load. Impossible? Not according to Camcon Automotive's technical director Roger Stone, as Ian Adcock discovers Mother Nature knows best What can the automotive industry learn from nature when it comes to weight saving? Ryan Borroff has been finding out Building up the pressure Tony Lewis reports on the growing trend towards even higher line pressures in injection systems.
X