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SAE Off-Highway Engineering 2012-03-08

2012-03-08
Look Ma, no driver Unmanned vehicles evolve quickly as processors, sensors improve performance. Calling all hydraulics engineers As the industry knows all too well, hydraulics engineers are hard to come by; a look at how companies are hiring, training, and, most important, retaining engineers. Making diesels quiet and clear Researchers look at the relative influence of gear design parameters on the rattle noise of a diesel engine timing gear train.
Magazine

SAE Off-Highway Engineering 2012-11-08

2012-11-08
Biofuel opportunities and pitfalls Annual growth in biofuels has been strong but is expected to slow in the near future. User interfaces going mainstream Off-highway HMIs use consumer technologies to add functions, simplify tasks. Reducing the environmental impact of hydraulic systems OEMS and their suppliers are creating new hydraulic systems and components, using new fluids and remanufacturing to save energy and reduce the environmental impact of off-highway equipment. Multiple controllers add to EV complexity Model-based design has revolutionized the way products are developed, with design shifting from parts to the whole.
Magazine

SAE Off-Highway Engineering 2013-04-04

2013-04-04
Hybrids step forward Electric and hydraulic systems trim fuel consumption and emissions, boost performance. Braking for safety Researchers developed a simplified ABS/EBS ECU test bench to research the brake force control function of the EBS system using HIL simulation technology. A metered look at dosing pumps High delivery accuracy, low weight, and dependably long life have made solenoid-operated pumps widely used in mobile applications.
Magazine

SAE Off-Highway Engineering 2013-08-08

2013-08-08
Simulating off-highway hybrids With customers squeezed by fuel costs, off-highway OEMs are showing some interest in developing hybrid equipment. CAE simulation tools are needed because of lack of experience with such devices. Their functional complexity requires control system simulation throughout their lives. A hose is a hose is a hose Researchers develop a method for the precise mounting of a hydraulic hose model. Integrity sensing for safety Researchers from Purdue developed a capacitance-based method for monitoring the integrity of tires, hoses, and other polymeric products during manufacturing and throughout the useful product life.
Magazine

SAE Off-Highway Engineering 2013-11-07

2013-11-07
Tackling biodiesel's technical challenges Caterpillar researchers are working to mitigate biodiesel's negative effects on engine components and aftertreatment systems. More for less Telematic systems are offering more features and functions for lower prices. Improving actuation speed and controllability With high-speed hydraulic proportional valves, the performance of existing cam phasing systems can be improved or the actuation mechanisms can be applied directly to engine valve actuation.
Magazine

Autonomous Vehicle Engineering: November 2019

2019-11-01
Editorial Bill Visnic: Expect the unexpected The Navigator Sam Abuelsamid: Separating illusion from magic in AV deployment The Road to Automobility The era of electrified, self-driving vehicles is upon us. Engineers are key to the transformation - with much hard work still to be done. Far and Away: Remote Drivers Monitor Autonomous Vehicles Remote operators are helping autonomous shuttles and other AVs navigate through complex situations. Mapping Canada - Centimeter by Centimeter A Montreal-based company leverages artificial intelligence to take on the task of developing high-definition maps of Canada. You've Lost That Queasy Feeling… Transcontinental research aims to understand the complex nature of motion sickness to help improve the automated-vehicle experience. 3D Sonar Sees Objects Overlooked by Costlier Sensors A dream of robotic fish inspires inexpensive automated-driving sensing technology that works for the critical areas close to the vehicle.
Magazine

Autonomous Vehicle Engineering: September 2021

2021-09-02
Editorial Fool Self-Driving II The Navigator What will result from NHTSA's Tesla Autopilot investigation? Data Drives Driverless Truck Launch Smart diagnostics and advanced validation help support the reliability metrics required to gain confidence that autonomous trucks are ready for the road. Peering into the Distance New sensors of all types look out longer distances - and provide higher resolutions - for engineers pushing ADAS capabilities and higher-level vehicle automation. Ford Drives into SAE Level 2 Driver monitoring was an essential component to engineering the new "hands-free" BlueCruise/Active Glide enhanced ADAS system. A Chore No More? The Detroit Smart Parking Lab opens to develop and test emerging parking technology in real-world settings. Share and Share Alike The concepts of rideshare and urban mobility continue to evolve as new projects test what's possible.
Magazine

Autonomous Vehicle Engineering: March 2021

2021-03-04
Editorial SPAC attack The Navigator Mapping the way to safe and natural automated driving Motorcycles Enter the ADAS Age The latest models from BMW, Ducati and KTM feature Bosch's new ACC setup, but further advancements will require navigating critical rider-control strategies. On the Way to SVA Aptiv says its Smart Vehicle Architecture central controller is the key to simpler, more compact and higher-performance ADAS and AV systems. New Insistence for Driver Assistance Panelists at SAE International's 2021 Government/Industry Meeting say assisted-driving technology is worthwhile - but effective driver monitoring is crucial. Flash! Lidar's Next Generation Arrives Technology solutions from new players and alliances are poised to drive down cost. Horiba MIRA's Vision for World-Class AV Testing A new autonomous vehicle development center called Assured CAV boasts a lengthy list of assets and capabilities.
Magazine

Autonomous Vehicle Engineering: January 2023

2023-01-01
Editorial As Argo taps out, the AV industry resets The Navigator 2022 a mixed bag for the AV sector Volvo's New Sensor Sweet A Luminar Iris lidar in the 2024 EX90 is engineered to enhance both automated driving and safety. Inner Visions Automated-driving and ADAS functionalities continue to influence some of the latest cabin safety and materials trends. The Olfactory Factor in AV Interiors Aryballe Technology's unique sensors-on-a-chip solution aims to end the subjectivity of the human nose while neutralizing vehicle cabin odors. AV Life After Argo AI Every new industry sector goes through a consolidation process where the strongest survive, and so it is with automated and autonomous driving technologies. Robotic ADAS Testing Bridges the Sim Gap ASI's Swarming technology allows collision-avoidance and other tests at high speeds on vehicles that human drivers find hard to match. New Tools & Technologies
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 2008-03-01

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 2001-06-01

2001-06-01
Cleaner and quieter snowmobiles The University at Buffalo's entry into the Clean Snowmobile Challenge led to modifications of engine, exhaust, body, and electronics to achieve a snowmobile with both lower noise and emissions. Predicting pump dynamics The dynamic behavior of a Parker Hannifin/Abex NWL hydraulic-axial-piston pump was simulated to determine information on pump flow ripple for longer pump life and reduced noise. Electronic engine management for small engines Through an overview of sensor technologies, Cherry Electrical Products confirms that the off-highway industry is ready to benefit from the automotive industry when it comes to electronically controlling small engines. Globally positioning mining vehicles High-tech guidance systems for mining vehicles supplied by companies such as Magellan Corp. are one of the most prevalent uses of global positioning systems in off-highway applications.
Magazine

SAE Off-Highway Engineering 2007-09-01

2007-09-01
Digging with precision Electronic technologies continue to transform the off-highway environment, all the way down to the components used to create electrohydraulic systems, including pumps, valves, and new additions, such as house controllers and sensors. Speeding up design Software automates more tasks, handles challenges. Together for a change On- and off-highway commercial vehicle industries converge at fourth-annual Commercial Vehicle Engineering Congress & Exhibition.
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 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 2006-10-01

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 2004-10-01

2004-10-01
Beyond batteries the reinvention of a 100-year old electrical energy-storage device could transform heavy-duty hybrid drive systems. Pumping down the volume The design evolution of low-noise spur and helical gear pumps. Tackling Tier 3 Both Cummins and Caterpillar choose the in-cylinder approach to reducing emissions. The telematics fix Diagnostics may be the key to keeping telematics viable and affordable. Complete and intelligent systems SAE 100 Future look: The future of mobile hydraulics can be seen today. Modern mobile hydraulics of today and tomorrow consists of complete system solutions with integrated electronics, which make off-highway machinery more efficient and, at the same time, reduce life-cycle costs. The next step in hydraulics and electronics SAE 100 Future Look: As we celebrate 100 years of SAE's contributions to our industry, it seems very appropriate to look forward at the next few years and assess where we will be.
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.
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