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Technical Paper
2014-09-30
Ashish Kumar Singh, Abhishek Sharma, Naveen Kumar
Fast depletion of fossil fuels is urgently demanding a carry out work for research to find out the viable alternative fuels for meeting sustainable energy demand with minimum environmental impact. In the future, our energy systems will need to be renewable and sustainable, efficient and cost-effective, convenient and safe. Therefore, researcher has shown interest towards alternative fuels like vegetable oils, alcoholic fuels, LPG, CNG, Producer gas, biogas in order to substitute conventional fuels used in compression ignition (CI) engine. However studies have suggested that trans-esterified vegetable oils retain quite similar physico-chemical properties comparable to diesel. Besides having several advantages, its use is restricted due to trouble like higher NOx emission and engine deposit due to partially incomplete combustion. There is a need of cleaner fuel for diesel engines in the present rigid emissions norms and the fossil depletion. In the current analysis CNG with KOME is used in dual fuel mode for complete combustion of charge so as to reduce emission.
Technical Paper
2014-09-30
Alexander Sappok, Leslie Bromberg
Diesel Particulate Filters (DPF) are a key component in many on- and off-road aftertreatment systems to meet increasingly stringent particle emissions limits. Efficient thermal management and regeneration control is critical for reliable and cost-effective operation of the combined engine and aftertreatment system. Conventional control DPF control systems predominantly rely on a combination of filter pressure drop measurements and predictive models to indirectly estimate the soot loading state of the filter. Over time, the build-up of incombustible ash, primarily derived from metal-continuing lubricant additives, accumulates in the filter to levels far exceeding the DPF’s soot storage capacity. The combined effects of soot and ash build-up dynamically impact the filter’s pressure drop response, service life, and fuel consumption, and must be accurately accounted for to optimize engine and aftertreatment system performance. This work applied a radio frequency (RF) sensor to directly monitor diesel particulate filter soot and ash levels, thereby enabling direct feedback control of the filter based on its actual loading state.
Technical Paper
2014-09-16
Samira Keivanpour, Christian Mascle, Daoud Ait Kadi
The End of Life phase of Aircraft is a relatively complex phase in life cycle of this product. The retired Aircrafts need to be parked in a certain conditions. The valuable parts are disassembled and the rest of them are dismantled. Materials are separated and upgraded, waste is burned or deserted and toxic materials restrained or incinerated. All of these activities should be performed in an ecologically right manner; however, collectively produced added values for all stakeholders need to be considered. This paper aims to provide a conceptual framework for value chain analysis of Aircraft recycling process in the context of sustainable development. The value chain related to recycling aircraft at the end of life was chosen to generate an in-depth analysis of a value chain, considering environmental and socio-economic concerns. The value chain framework for recycling of fleets is identified. The key processes with environmental and social impacts are determined. The decision making process along the value chain and the policy framework including codes, regulations and standards are addressed.
WIP Standard
2014-07-22
A program, which ensures quality with the relevant standards shall be introduced for all on-line Stations where de-icing/anti-icing of aircraft on the ground is either normally carried out, or where local conditions may periodically lead to a requirement for airplcraft to be de-iced/anti-iced. Deficiencies, in regard to a Station's local de-icing/anti-icing procedures, shall be identified and subsequently actioned through this program, thereby ensuring that the required safety standards are maintained.
Standard
2014-07-22
This AS describes a standard method for viscosity measurements of thickened (AMS1428) anti-icing fluids. Fluid manufacturers may publish alternate methods for their fluids. In case of conflicting results between the two methods, the manufacturer method takes precedence. To compare viscosities, exactly the same measurement elements (including spindle and container size) must have been used to obtain those viscosities.
Article
2014-07-15
Electric propulsion has been limited so far to small movements of the satellites once it is in its geostationary orbit. The Boeing 702SP innovation is its use of electric propulsion to raise the satellite from its launch-vehicle drop-off point to geostationary orbit.
Article
2014-07-09
The U.S. National Highway Traffic Safety Administration (NHTSA) is planning to prepare an Environmental Impact Statement (EIS) to analyze the potential environmental impacts of new fuel-efficiency standards for commercial medium- and heavy-duty on-highway vehicles and work trucks, potentially covering engines, chassis, vehicles, and/or trailers manufactured after model year 2018.
Article
2014-07-08
A simpler spin on hybrids relies on mechanical flywheels and push-belts rather than batteries and motors
WIP Standard
2014-07-08
This SAE Aerospace Information Report (AIR) provides a method for assessing particle losses that occur in a sampling system of specified geometry based on the nvPM mass and number measured at the end of the sampling system. Both size dependent diffusion loss and size independent thermophoretic loss mechanisms are included in the method. The penetration function of that system must be determined by measurement and/or by computation using an analytical method as described within this report. The outcome of this line loss assessment provides estimated correction factors for nvPM mass and number concentration with associated uncertainties based upon nvPM measurement uncertainties and method assumptions. These correction factors give an estimation of nvPM mass and number values at the inlet to the sampling system.
Article
2014-07-07
The U.S. Department of Energy's Fuel Cell Technologies Office has issued a request for information (RFI) to the research community and relevant stakeholders, according to a release. The DOE is seeking feedback about fuel-cell technology validation, commercial acceleration, and potential deployment strategies for continuous fuel-cell rechargers (range-extenders) on board light-duty battery-electric vehicle fleets. 
Article
2014-07-01
A new version of Elektrobit's (EB's) Assist Electronic Horizon Solution features new functions that offer more flexibility for implementing predictive driver assistance systems.
Technical Paper
2014-07-01
Praveen Chavannavar
Abstract Various engine platforms employ Selective Catalytic Reduction (SCR) technology to reduce the tail pipe emissions of oxides of nitrogen (NOx) from diesel engines as part of an overall strategy to comply with the emission regulations in place in various countries. High levels of NOx conversion (greater than 98%) in SCR aftertreatment may provide operating margin to increase overall fuel efficiency. However, to realize the potential fuel efficiency gains, the SCR technology employed should achieve high NOx conversion with limited reductant slip over transient application cycles in addition to steady state operation. A new approach to SCR controls was developed and implemented. This approach does not rely on any maps to determine the amount of urea solution to be dosed, thus significantly reducing calibration and development time and effort when implementing the SCR technology on multiple engine platforms and applications. In addition, the controls technique is completely model based and was able to achieve high NOx conversion efficiencies through the SCR system, while ensuring limited ammonia slip due to sharp transient events in the application cycle.
Technical Paper
2014-07-01
Jingyi Zhang, Fuyuan Yang
Abstract This paper was targeted on achieving in-cycle real-time prediction of NOx emission of diesel engines in both steady-state and transient processes based on cylinder pressure. Specifically, input parameters of the NOx emission model were determined, an offline empirical model of NOx emission was built based on steady-state test data, and in-cycle real-time prediction of NOx emission was achieved in the in-cylinder combustion analysis tool. Based on the mechanism of NOx formation, combustion state parameters in strong correlation with NOx emission were extracted from cylinder pressure, rate of cylinder pressure, rate of heat release, accumulated heat release and burned zone temperature. Quantitative correlations between combustion state parameters and NOx emission were calculated based on steady-state test data and the inputs of the empirical model of NOx emission were determined. The quadratic polynomial model from combustion state parameters to NOx emission was built based on steady-state test data.
Magazine
2014-07-01
Global Viewpoints The latest strategies are investigated for vehicle development by automakers and major suppliers. Sports cars embrace array of green technology IMSA Tudor United SportsCar Championship promotes a variety of green technologies to link racing to the road. More gears, more challenges Many strategies, as well as key software and hardware aspects related to controllers, networks, sensors, and actuators, must be considered to keep automatic transmissions shifting smoothly as more gears are added to improve fuel economy. Advancing structural composites Industry experts address the opportunities and challenges involved with moving toward composite-intensive vehicles, including Nissan's effort to produce a high-volume, fully recyclable composite liftgate with low metal content.
Technical Paper
2014-07-01
Björn Lundberg, Jonas Sjoblom, Åsa Johansson, Björn Westerberg, Derek Creaser
Parameter tuning was performed against data from a full scale engine rig with a Diesel Oxidation Catalysts (DOC). Several different catalyst configurations were used with varying Pt loading, washcoat thickness and volume. To illustrate the interplay between kinetics and mass transport, engine operating points were chosen with a wide variation in variables (inlet conditions) and both transient and stationary operation was used. A catalyst model was developed where the catalyst washcoat was discretized as tanks in series both radially and axially. Three different model configurations were used for parameter tuning, evaluating three different approaches to modeling of internal transport resistance. It was concluded that for a catalyst model with internal transport resistance the best fit could be achieved if some parameters affecting the internal mass transport were tuned in addition to the kinetic parameters. However it was also shown that a model with negligible internal transport resistance still could obtain a good fit since kinetic parameters could compensate for transport limitations.
Article
2014-06-30
Harley-Davidson has for a number of years dispatched an engineer to SAE's annual Hybrid & Electric Vehicle Symposium for the purpose of gathering intel and making contacts in the EV field. One tangible result of Harley's SAE participation is Project LiveWire, the company’s first electric motorcycle concept.
Article
2014-06-30
On a global scale, racecars burn an irrelevant amount of fuel, so racing series’ interest in fuel-saving technology has nothing to do with saving the planet from racecars’ environmental impact. Transporting teams to the tracks burns far more fossil fuels than any fuel actually consumed at the track.
Article
2014-06-26
The Department of Energy’s Oak Ridge National Laboratory (ORNL) has launched its new Institute for Functional Imaging of Materials, which aims to accelerate discovery, design, and deployment of new materials, according to a release from the laboratory.
Article
2014-06-24
Aramco Services, a unit of Saudi Aramco, is opening a facility in Detroit to collaborate with automakers to produce both better fuels and better engines.
Standard
2014-06-24
This document establishes the minimum requirements for an environmental test chamber, and test procedures to carry out anti-icing performance tests according to the current materials specification for aircraft deicing/anti-icing fluids. The primary purpose for such a test method is to determine the anti icing endurance under controlled laboratory conditions of AMS1424 Type I and AMS1428 Type II, III, and IV fluids.
Article
2014-06-23
Boeing opened a new research and technology center to work with Brazilian researchers and scientists to develop aerospace technologies. The new Boeing Research & Technology-Brazil (BR&T-Brazil) center is focused on sustainable aviation biofuel development, advanced air traffic management, remote sensing, advanced metals and bio-materials, and support and services technologies.
Article
2014-06-20
What researchers at MIT refer to as an exotic state of matter--a “random solid solution”--affects how ions move through battery material.
Standard
2014-06-20
This SAE Aerospace Recommended Practice (ARP) provides design guidance and a method for testing thermal performance of airplane in-flight food storage carts. It is noted that thermal performance criteria is not part of AS8056.
Standard
2014-06-16
This SAE Recommended Practice describes the basic content requirements, bar-code specifications, and functional test specifications of a vehicle emission configuration (VEC) label. On the vehicle, the VEC label is to be mounted under the hood in a readily accessible location for use of a bar-code scanning device. This document specifies a permanent vehicle emission configuration label that can be automatically identified through a bar-coded format.
Article
2014-06-12
GMZ Energy has announced the successful demonstration of a high-temperature thermoelectric generation (TEG) unit designed for automotive (civilian and military) waste-heat recapture. In the demo, it generated an output power well in excess of its 200-W design goal.
Article
2014-06-12
Five collegiate teams collected four-digit mpg during the 35th running of SAE Supermileage, where 19 custom-designed vehicles competed for the best fuel economy title.
WIP Standard
2014-06-11
This SAE Aerospace Recommended Practice (ARP) defines lightning strike zones and provides guidelines for locating them on particular aircraft, together with examples. The zone definitions and location guidelines described herein are applicable to Parts 23, 25, 27, and 29 aircraft. The zone location guidelines and examples are representative of in-flight lightning exposures.
WIP Standard
2014-06-09
This document recommends contents for Emergency Medical Kits, including medications and instrumentation, intended for use on passenger-carrying aircraft serviced by at least 1 flight attendant. Recommended practices for carriage of, access to, and maintenance of Emergency Medical Kits are also included.
Standard
2014-06-04
These Protocols can be used for all forms of motorsports; however, only certain combinations of Green Racing Elements will result in motorsport competitions that are recognized as Green Racing events. As new information, fuels and technologies emerge, addendums or new protocols will be developed. The SAE International (SAE) Motorsports Engineering Activity is also an invaluable source of reference materials and ongoing technical advice providing access to the constantly evolving set of best safety and operational practices for current and emerging technologies. This is especially true with regard to high voltage safety and the adoption of other advanced propulsion and fuel system technologies.
Magazine
2014-06-01
Steering a better path New mechanisms developed by NIT Warangal are simpler than the Ackermann type and allow all four wheels to undergo pure rolling. Monitoring fine particle concentrations A robust and versatile system has been developed by Pegasor Oy to measure engine exhaust particulate mass and number more accurately. New rules shuffle the F1 deck New turbocharged hybrid-electric power units and revised aerodynamics may scramble the familiar order in Formula One for 2014.
Viewing 61 to 90 of 22368

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