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2014-03-06
WIP Standard
AIR6297
To provide a method for modeling the noise directivity behind start-of-takeoff roll based on empirical data from modern jet aircraft. This method would replace the method described in Section 3.3.1 of SAE-AIR-1845A "Procedure for the Calculation of Airplane Noise in the Vicinity of Airports."
2014-03-04
Magazine
What's New at ConExpo/IFPE More new products and technologies that companies plan to showcase at this year's ConExpo-Con/Agg, which is co-located with the IFPE fluid-power event in Las Vegas from March 4-8, are previewed. Gearshift actuator dynamics in a dual clutch transmission The emergence of tougher environmental and fuel efficient legislations have triggered exploration and advance toward new and better vehicle transmission technologies. Software makes solid impact Programs are helping hydraulic systems do more while reducing operator workloads. Damping out booming noise NVH improvement techniques are gaining traction with the goal to improve the quality perception of off-highway equipment performance and operator comfort.
2014-03-03
Article
One of the subject areas garnering the most attention at the SAE 2014 World Congress is aerodynamics because of its effect on vehicle efficiency through drag reduction and the potential for real-world fuel economy gains.
2014-03-01
Magazine
The future for electric and hybrid vehicles in India Technical and political challenges alike have held back the electric and hybrid market, but there are signs of hope. Flex-fuel snowmobile challenge results in improved efficiency and lower emissions Noise and exhaust emissions of recreational snowmobiles have come under increased scrutiny by the U.S. federal government. Students from Kettering University take on the design challenges of meeting or exceeding such regulations. Actuator dynamics in a dual clutch transmission The emergence of tougher environmental and fuel efficient legislations have triggered exploration and advance toward new and better vehicle transmission technologies.
2014-02-26
Article
Technical sessions focused on interiors at the SAE 2014 World Congress span the designated technology areas, including electronics, materials, and safety/testing. One example in the electronics area, to take place April 8 at 9:30 a.m., covers multi-media systems. As part of the discussion, Takata researchers will present new touchscreen concepts such as a smart display surface that could benefit steering-wheel design.
2014-02-17
Article
The four-year, $15 million development program with UW-Madison and Wayne State University aims to achieve diesel levels of efficiency and torque, with lower emissions and cost—in an advanced gasoline-fueled engine.
2014-02-12
Article
A new approach is presented for wind tunnel calibrations based on a limited number of dynamic pressure measurements and a predictive technique using Neural Network (NN).
2014-02-12
Article
The methodology enables material selection and design optimization of energy absorbers for pedestrian protection based on a simple laboratory test and FE model, eliminating the need for extensive vehicle testing.
2014-02-04
Article
In teaming with Honda, Subaru, Jaguar Land Rover, MIT AgeLab, and Touchstone Evaluations to do basic research, Denso's Doug Patton says objective is "toolkit" for developing new HMIs.
2014-02-04
WIP Standard
J1777
This Hydrospace Information Report (HIR) identifies the general environmental considerations for the design, development, evaluation, and testing of advanced surface craft, submersible vehicles, and other marine craft. This HIR provides criteria on the environmental limits within which marine vehicles, related components, and associated equipment should operate satisfactorily and reliably. This HIR is intended for use as a guide for the development of specific environmental requirements to be included in detailed specifications for marine vehicles and associated equipment. Specific requirements are in a state of continual change as our knowledge of the ocean environment increases. The ocean environment varies with location and time. Changes in the ocean environment can occur not only on a seasonal basis but also monthly, weekly, daily, and in some cases even hourly.
2014-01-30
Article
BYD and the New York Metropolitan Transportation Authority (MTA) recently announced some findings from a two-month pilot test on a 40-ft BYD battery-electric bus conducted in Manhattan from Aug. 25 to Oct. 25 of last year. The electric bus maker also recently completed the first phase of a 10-month trial, which commenced this past summer in Gatineau, Quebec, and Ottawa, Ontario, again using a 40-ft BYD-supplied electric bus.
2014-01-30
Article
Dana Holding Corp. on Jan. 28 dedicated an 8000-m² (86,000-ft²) technology center in Pune, India. Its 240-plus engineers there do work for OEMs in the light-vehicle, commercial-vehicle, and off-highway markets in India and in the region.
2014-01-30
Article
Battery behemoth Johnson Controls and Lawrence Technological University in Southfield, MI, announced Jan. 29 that they will team to identify and validate new energy-storage technologies for vehicles. Johnson Controls says it will donate and install state-of-the-art test equipment and deploy technical resources to the university to propel academic and applied research into optimizing vehicle and battery design.
2014-01-28
Article
High-contrast IR wire grid polarizers from Edmund Optics are suited for broadband infrared applications that require high transmission and contrast, including spectroscopy and thermal imaging.
2014-01-28
Article
The Palmer model PTG200 digital pressure gauge from Palmer Wahl Instrumentation Group is an excellent substitute for mechanical precision pointer pressure gauges.
2014-01-22
Article
In parallel with the auto industry's car design and engineering challenges runs the vital function of testing. With the advent of EVs and HEVs it has acquired an increasingly complex dimension.
2014-01-22
Article
Of eleven minicars evaluated in recent Insurance Institute for Highway Safety (IIHS) "small overlap front" crash testing, only one achieved an "acceptable" rating. With "good" ratings in the testing organization's four other categories, the 2014 Chevrolet Spark qualifies as an IIHS 2014 Top Safety Pick—the only one among minicars.
2014-01-20
Article
The system is a late step in Ford’s building-block approach to self-driving cars. Existing assistance systems will be integrated and use improved sensors, hardware, and software.
2014-01-15
Article
Acoustic performance has become a key competitive factor for off-highway equipment due to an increasing focus on operator comfort and noise pollution as well as continuing regulatory pressure.
2014-01-12
Article
The diagnostics of machinery requires analysis of the time series of sensor and control signals.
2014-01-10
Standard
J1995_201401
This SAE Standard has been adopted to provide a basis for dynamometer determination of gross engine power and torque under reference conditions. It is intended for use primarily by engine manufacturers who supply engines for installation by others in applications where the engine manufacturer may not control the induction and exhaust system design or the speed at which the engine is run.
2014-01-08
Article
A widely used material for lightning strike protection of CFRP structures within the aerospace industry is expanded metal foil (EMF). An issue with EMF is micro cracking of the paint, which can result in corrosion of the metal foil and subsequent loss of conductivity. Boeing researchers examined the issues of stress and displacement in the composite structure layup, which contribute to paint cracking caused by aircraft thermal cycling.
2014-01-07
Article
Because its engineers have made faster progress than expected, Toyota will offer a fuel-cell car in the U.S. in 2015—earlier than it had planned—the company announced Jan. 6 at the Consumer Electronics Show in Las Vegas.
2014-01-03
Article
Liquid ring pumps are used in aircraft fuel systems in conjunction with main impeller pumps and are used for priming the pump system as well as to remove fuel vapor and air from the fuel.
2014-01-02
Article
After a 10-month selection process involving 25 proposals from 24 states, the U.S. FAA has chosen six unmanned aircraft systems (UAS) research and test site operators across the country. In selecting the six test site operators, the FAA considered geography, climate, location of ground infrastructure, research needs, airspace use, safety, aviation experience, and risk.
2013-12-27
Article
Macro Sensors CD series of subminiature LVDT position sensors features a lightweight, low-mass core, compact 0.375 in diameter, and accuracy necessary for many aerospace applications with tight space and weight restrictions.
2013-12-20
Technical Paper
2013-01-9045
P A Lakshminarayanan
The passby noise is the net effect of the noise from the engine, tires, vehicle panels, the fan and the exhaust silencer. Exhaust noise is probably the loudest component of the passby noise in diesel trucks. The passby noise is measured when the vehicle is in transient condition according to the standards. A technique is developed to simulate the transient noise from the exhaust using 1-d simulation software AVL-Boost. It considers thermodynamics of combustion in the engine including the turbocharger, inertia of the engine and the vehicle. The technique helps in optimizing exhaust silencer, acceleration and in-cylinder parameters in transient conditions and the turbocharger fatigue. A 165 kW 6-cylinder turbocharged and intercooled engine is simulated. The transient performance of the engine in the vehicle is validated by comparing the predicted results with the observed fuel consumption on road, time to accelerate to 60 km h−1 and the fluctuations in the turbocharger speed. The Linear Acoustics model of the silencer in conjunction with this transient model of the engine is used to predict the insertion loss of the silencer and the vehicle passby noise.
2013-12-20
Technical Paper
2013-01-9044
Alexandre Schalch Mendes, Pablo Siqueira Meirelles
This work describes the development and use of the Hardware-in-the-Loop (HIL) technique to evaluate the dynamic behavior of a torsional vibration rubber damper (TVD) used in a spark ignition internal combustion engine. The TVD was adapted to a test bench designed for this research and the HIL technique was applied considering the simulated dynamic response of the crankshaft. The results of the torsional vibration amplitudes are compared with measured values in a steady-state well identified condition, to experimentally validate the proposed mathematical model and the possibility to use the HIL technique to evaluate dampers and crankshaft behavior in realistic long term tests, where the rubber degradation also affects the dynamic response of the system. Finally, it was concluded that simulated and measured signals presented a good correlation in some engine operational conditions, reaching the objectives of this study.
2013-12-19
Article
The goal of the program, which began in 2007, is to advance development of new sensor and control technologies with the aim of applying them to the active safety systems of future vehicles.
2013-12-19
Article
As some features quiet children, others interfere with driver concentration on the road ahead, studies by AAA and MIT find. Toyota is testing transfer of tasks to passengers to relieve the driver of cognitive overload.
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