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SAE Off-Highway Engineering 2000-04-01

2000-04-01
Simulating cab noise and vibration Researchers at kubota and Doshisha University have established a prediction method for the engine-idling state using statistical energy analysis. Manufacturing cost estimating Caterpillar's ACT Group uses Micro Estimating Systems' computer-aided estimating program to increase efficiency and decrease operating costs in powder-metal part manufacturing. In search of greener pastures Agricultural OEMs are looking at the total life cycle to develop more environmentally conscious products and processes. Emissions and lubrication More stringent diesel emissions legislation is placing an increased burden on engine lubricant in the form of soot loading.
Magazine

SAE Off-Highway Engineering 2009-11-01

2009-11-01
Top Technologies of 2009 The editors take a brief look back at the most significant innovations during the past year as voted on by readers. The big picture A holistic approach to hydraulics improves overall vehicle efficiency. Getting smart with electronics More chips, usually with more power and memory, are being deployed throughout off-highway equipment.
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 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 2009-04-01

2009-04-01
Fixing the cracks in the system Nondestructive testing techniques evolve to accommodate new materials and digital capabilities. Looking to the future LCDs, touch-screen technology transform the look and feel of cabs. Advanced combustion near and far Advanced combustion research promises long-term improvements in efficiencies while reducing or eliminating the need for aftertreatment.
Magazine

SAE Off-Highway Engineering 2001-04-01

2001-04-01
Operator station innovations Off-highway engineers work hard to provide comfort, ease of operation, and reliability to users. As an added challenge, they must design for operators who can spend an entire day working hard in their cab. Designing online Major developments in internet-based technologies are profoundly changing the engineering/design process, revolutionizing the way OEMs and suppliers do business, and speeding the industry's time-to-market. FEA simulation of an electrohydraulic system Researchers from the Milwaukee School of Engineering provide an accurate model of a typical magentic actuator Predicting injury in forklift upsets Researchers from the Biomechanics Institute present test results that demonstrate operators can prevent ejection and injury from a forklift if they are lap-belted and have either a winged seat or hip restraint.
Magazine

SAE Off-Highway Engineering 2009-02-01

2009-02-01
Whistle down the wire Collaboration between OEMs and suppliers leads to new advances, and challenges, for electrohydraulic system control. Chipping away at drivetrain challenges Chips, sensors, controllers, software all combine to help engineers improve efficiency. Engineering disciplines unite Design tools help disparate groups provide input throughout the development process. Innovative thinking 101 West Virginia University professor Dr. James E. Smith issues a call for innovation as one of the central themes of his term as SAE's 2009 President.
Magazine

SAE Off-Highway Engineering 2002-02-01

2002-02-01
Evolution of ac-drive technology The introduction of inverter drives has stimulated development of the ultra-class haul trucks in operation today. Hydraulics in the age of specialization Today's hydraulics are to earlier systems as Sim City is to Lincoln Logs. Increasing sophistication has changed the way companies such as Eaton and Caterpillar build equipment, while users' expectations and regulators' demands keep rising. IT-tool for intelligent motion control A Danish mechatronic research program focused on intelligent motion control for rapid prototyping of fluid-power components and systems.
Magazine

SAE Off-Highway Engineering 2003-02-01

2003-02-01
The evolution of diesel emissions control The development of clean diesel has been a saga of evolution punctuated by occasional milestones. Heavy-duty engine emissions tests Ricardo recently commissioned from Emprise a new full-dilution emissions measurement system at its Chicago Technical Center. Air entrainment in hydraulic systems Researchers from Opus Systems and Hosei University designed a device to remove bubbles or foam in working oils for improved performance. Turbocompounding revisited Scania has introduced a new in-line six-cylinder engine that uses technology developed 20 years ago to meet tomorrow's emissions requirements.
Magazine

SAE Off-Highway Engineering 2008-12-01

2008-12-01
Electrohydraulic engineers embrace integration Software improvements help both engineers and operators as architectures evolve. Indestructible from the start OEMs and suppliers are investing in testing equipment, facilities, and software to ensure proper performance of components prior to being placed in the field. To 2010 and beyond Engineers working on emissions-control systems for heavy-duty engines already are preparing for ever more stringent regulations later next decade. Top Technologies of 2008 The editors look back at some of the most significant technological innovations during the past year according to readers.
Magazine

SAE Off-Highway Engineering 2006-12-01

2006-12-01
Transforming the cab Digital displays, networks provide more info in less space. What regulators take away, engineers have to put back better A marriage of electronic control and hydraulic power is helping OEMs and end-users maintain traditional diesel efficiency while meeting ever more stringent emissions requirements. Top technologies of 2006 A look back at some of the most significant technological innovations during the past year. Smooth operators New technology allows engineers to create innovative seat and cab suspension designs that no longer just control vibration, but manage vibration.
Magazine

SAE Off-Highway Engineering 2004-12-01

2004-12-01
Body building Caterpillar takes it upon itself to design a body for payload, performance, and durability. Getting on board with simulation Digital development is becoming more widespread and moving into areas and industries that have other long-established traditional design methods. 2004 technology in review A look back at some of the msot significant technological innovations in the news over the past year. Tradition, transition, and transformation SAE 100 Future Look: SAE reflects on a proud and rich transportation industry.
Magazine

SAE Off-Highway Engineering 2007-12-01

2007-12-01
Economies of (drivetrain) scale Emissions challenges continue, but engine and transmission technology is advancing solutions and improving vehicle systems intergration. Searching for real-world responses Prototype testing is constantly changing as electronic technologies help transform equipment; design processes adjust as digital development evolves. Hydraulic brakes on one hand, air brakes on the other Building a better brake system had continued to challenge engineers for more than a century, as a changing world has demanded correspondingly advanced brake technology. Top technologies of 2007 A look back at some of the most significant technological innovations during the past year.
Magazine

SAE Off-Highway Engineering 2005-12-01

2005-12-01
Delivering simulation benefits Product-development software tools are being put to good use in many off-highway industry segments. Movingalong with stationary power Performance, reliability, and cleanliness are just a few of the golden rules for all engines, whether they are propelling a tractor or powering a barn. Frames adapt to changing environments Heavy-equipment frames do not often get a lot of attention from customers, due mainly to the fact that they get plenty of attention during the design cycle. 2005 technology in review 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

SAE Off-Highway Engineering 2008-06-01

2008-06-01
Communication helps make sense of problems Sensors that link engines and hydraulics to the outside world provide data that can be used to analyze performance and the cause of failures. Characteristics of multiple injections A look at the effects that pilot-injection fuel quantity and timing have on light-duty engine emissions. Hybrid innovations for hydraulic braking Exploring new technologies for recovering kinetic energy from braking.
Magazine

SAE Off-Highway Engineering 2005-06-01

2005-06-01
Testing in the field Hardened data-acquistion modules benefit companies conducting off-highway testing in harsh environments. Continuing to advance technology With close to $1 billion spent on R & D in 2004 alone, Caterpillar is taking a lead role in the push to move the commercial-vehicle industry forward. Testing trends This special section highlights some of the latest equipment used by engineers to evaluate new technologies. The forgotten compact engine Though heavy-duty engines have gotten most of the industry attention lately, smaller engines are out there working hard, with seemingly little respect. Productivity drives future agricultural technologies SAE 100 Future Look: Despite the tremendous rate of change in the agricultural equipment industry, one common theme has led the technological advances in agricultural equipment.
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 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 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

Aerospace Engineering 2004-06-01

2004-06-01
Showing how it's done Engineers are using software to better manage product development data, and applying tools to a new class of problems. NASA goes deep The agency's new long-term space exploration program starts with a return to the moon and will ultimately enable future exploration of Mars and other solar system destinations. Farnborough preview In an event that happens just once every two years, bringing the multitudes together, it is important to get as much technology as possible into the open and to find solutions to hard problems. Seats under crash loading The FAA and academia have conducted aircraft seat drop tests to compare and contrast passenger crash protection. A fluid approach Aerospace engineers have started using CFD software earlier and earlier in the design process.
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