Viewing 1 to 30 of 102
Journal Article
Michael Deligant, Pierre Podevin, Georges Descombes, Fabrice Vidal, Alain Lefebvre, Thierry Lamquin
Fuel consumption in internal combustion engines and their associated CO2 emissions have become one of the major issues facing car manufacturers everyday for various reasons: the Kyoto protocol, the upcoming European regulation concerning CO2 emissions requiring emissions of less than 130g CO2/km before 2012, and customer demand. One of the most efficient solutions to reduce fuel consumption is to downsize the engine and increase its specific power and torque by using turbochargers. The engine and the turbocharger have to be chosen carefully and be finely tuned. It is essential to understand and characterise the turbocharger's behaviour precisely and on its whole operating range, especially at low engine speeds. The characteristics at low speed are not provided by manufacturers of turbochargers because compressor maps cannot be achieve on usual test bench.
Technical Paper
Erwann Guillou, Russel DiMicco, Ephraim Gutmark, Ashraf Mohamed, Matthieu Gancedo
Operational ranges of compressors are limited when running at low mass flow. In particular, large pressure fluctuations occur when reaching surge that can cause rapid deterioration of the bearing system and considerably increase the level of noise. In order to extent the operability of their turbochargers, Honeywell equipped its compressor housings with ported shrouds located at the inlet. The ported shroud has been demonstrated to allow a larger range of operability with minor negative impact on the compressor efficiency. In a collaborative work between Honeywell and the University of Cincinnati, a turbocharger bench facility was designed and tested. The size of the compressor was typical for a turbocharger used on diesel engines. The goal of the experimental study was to develop better understanding of the flow dynamic in the compressor housing that affects stall and surge for different operating conditions.
Technical Paper
Kader Fellague, Emmanuel Nwadiogbu, Sunil Menon, Joseph Borghese, Ravindra Patankar
The operating environment of aircraft causes accumulation and build-up of contamination on both the narrowest passages of the ECS (Environmental Control System) i.e: the heat exchangers. Accumulated contamination may lead to reduction of performance over time, and in some case to failures causing AOG (Aircraft on Ground), customer dissatisfaction and elevated repair costs. Airframers/airlines eschew fixed maintenance cleaning intervals because of the high cost of removing and cleaning these devices preferring instead to rely on on-condition maintenance. In addition, on-wing cleaning is t impractical because of installation constrains. Hence, it is desirable to have a contamination monitoring that could alert the maintenance crew in advance to prepare and minimize disruption when contamination levels exceed acceptable thresholds. Two methods are proposed to achieve this task, The effectiveness of these methods are demonstrated using analytical and computational tools.
Technical Paper
Jaroslaw Grochowicz, Jos Ruymen, Harald Abendroth, Klaus Augsburg, Max Votteler
Efficient development and testing of brake systems requires further substitution of expensive and time consuming vehicle testing by appropriate dynamometer testing. Some of the current simulation methods do not reflect the needs of engineering and the progress made in the development of test equipment. The lack of suitable procedures may cause unexpected delays in the realization of projects. Road load simulations for lifetime prediction on brake dynamometers have a long history, however never got a real break-through in Europe - possibly because the prediction quality and efficiency did not satisfy. This paper concentrates first on the analysis of the vehicle data recorded in Mojacar (Spain) which is a sign-off test for wear and noise for brands of Ford Motor Company for European market. Specific attention is given to different types of driving resistances and road profiles and to consideration of different methods for numerical description and comparison of road load data.
Technical Paper
Fredrik Hellstrom, Erwann Guillou, Matthieu Gancedo, Russel DiMicco, Ashraf Mohamed, Ephraim Gutmark, Laszlo Fuchs
Surge is a phenomenon that limits the operational range of the compressor at low mass flow rates. The objective of this research is to study effective operational range for a ported shroud compressor. The size of the compressor is typical for a turbocharger used on diesel engines. To be able to extend the operational range, the surge characteristics have to be assessed. This is done by performing measurement of the flow at the inlet to the compressor wheel and pressure fluctuations at the inlet and outlet of the compressor housing. Detailed numerical computations of the flow in the entire compressor section under similar operating conditions have also been carried out. The experimental work includes Particle Imaging Velocimetry (PIV) measurements of the instantaneous and mean velocity field at the inlet. At surge, low frequency pulsations are detected that seem to result from back flow already observed in stall.
Technical Paper
Novica A. Losic
This work deals with the modeling and analysis of a phasor-controlled Starter/Generator (S/G) electrical machine during starting either an aircraft Main Engine (ME) or Auxiliary Power Unit (APU). The model can be used to determine how much stator and exciter current is required to be supplied by a controlled power converter to the S/G to meet the start torque profile. In addition to modeling details and simulation results the paper presents a thorough analysis of the S/G machine, its environment and control.
Technical Paper
Ronald Rohrbach, Daniel Bause, Gary Bilski, Wes Gerwin, Scott Tabb, Peter Unger, Gary Zulauf, Howard Hess, Ken Murphy, Roxanna Moores, Steve Goguen, Ralph Nine
The molecular filtration of sulfur components in ultra low sulfur diesel (ULSD) fuel is described. A comprehensive screening of potential sulfur removal chemistries has yielded a sorbent which has the capability to efficiently remove organo-sulfur components in ULSD fuel. This sorbent has been used to treat ULSD fuel on a heavy duty engine equipped with NOx adsorber after-treatment technology and has been shown to lengthen the time between desulfation steps for the NOx adsorber. The fuel properties, cetane number and aromatics content, etc., have not been changed by the removal of the sulfur in the fuel with the exception of the lubricity which is reduced.
Technical Paper
Daniel Bause, Gary Bilski, Michael Herald, Philip Treier
Various government agencies such as EPA and CARB have established evaporative emission standards for light duty vehicles. To help the OEM's meet these emission standards for volatile organic compounds (VOC's), Honeywell has developed a hydrocarbon adsorber (HCA) approach to reduce hot soak emissions that escape through the air induction system. The HCA has a small footprint and is incorporated in the air filter housing while having a minimal impact on the air flow to the engine during normal operation. As required through EPA regulations it is permanently mounted to provide life of the vehicle durability. In this paper, the process for selecting the VOC adsorbent that functions within the parameters of the hot soak cycle and is regenerated under standard engine operation is discussed. An important part of this technology has been the development of a laboratory test that would simulate engine conditions and permit evaluation of various HCA prototypes.
Technical Paper
Randall H. Black
Current Environmental Control and Life Support Systems (ECLSS), particularly on large systems, have a tendency to include several heterogeneous processing elements. This approach is also the default in the commercial aircraft industry. However, Honeywell has been extremely successful in the past decade in using an integrated modular approach to command and data handling for aircraft avionics. This approach, dubbed “Fifth Generation Avionics” by the Air Force's Wright Laboratory, has resulted in significant reductions in the size, weight, power, and acquisition costs of the data handling subsystem. Logistics, modification, and upgrade costs also decreased considerably. While commonality is maximized in the integrated modular architecture, each application continues to be independent with internal designs completely under the control of the application developer.
Technical Paper
Gerald C. Vandevoort, Emily Wilson
The implementation of the Future Air Navigation System (FANS) will be evolutionary rather than revolutionary. Different generations of airplane models, each operating in a variety of operating environments will dictate more than a single growth path. How these markets will evolve is a function of our collective ability to assign benefits to specific equipage, to forge new business relationships and to address the market as a global one. Realization of the full benefits of FANS will depend on leadership: who and when.
Technical Paper
Val A. Kagan, Nanying Jia
Due to the wide and ever increasing application of thermoplastic parts in the automotive industry, the measurement and interpretation of their properties must be thoroughly understood before anyone can hope to correctly utilize the results in material selection, product design, and performance analysis while all these can be greatly influenced by the end-use conditions. Tensile properties of thermoplastics, such as stress and strain at yield, ultimate tensile strength, and Young's modulus, are among the most widely measured and cited mechanical properties for material evaluation, quality control, structure design, modeling, and failure analysis. This paper deals with several major challenges that an engineer may face when attempting to obtain accurate tensile property data for thermoplastics. One such challenge is the trend of automotive industry today to convert from ASTM to ISO procedures for thermoplastics evaluation and product certification.
Technical Paper
J. Ferrall, P. Sokolov, T. Rehg
Honeywell is developing a 50-kW, high efficiency PEM fuel cell stack system (FCSS) for use in light-duty vehicle transportation under sponsorship from the Department of Energy (DOE) and the South Coast Air Quality Management District. The performance goals of the FCSS include weight, volume, cost, efficiency, and transient performance. The project includes design, testing, and delivery of the FCSS to DOE. A conceptual system design is presented including trade study results and the technology gaps that must be bridged to meet the DOE goals.
Technical Paper
Laura N. Supra, Barry W. Finger, Mike A. Reddig, Allen K. MacKnight, JoAnn Silverstein, David M. Klaus, James E. Urban, Dick F. Strayer
The Biological Wastewater Processor Experiment Definition team is performing the preparatory ground research required to define and design a mature space flight experiment. One of the major outcomes from this work will be a unit-gravity prototype design of the infrastructure required to support scientific investigations related to microgravity wastewater bioprocessing. It is envisioned that this infrastructure will accommodate the testing of multiple bioprocessor design concepts in parallel as supplied by NASA, small business innovative research (SBIR), academia, and industry. In addition, a systematic design process to identify how and what to include in the space flight experiment was used.
Technical Paper
Zhidong Zhang, Nickolas Vlahopoulos, Thomas Allen, Kevin Zhang, Xianli Huang, David J. Moenssen
The Indirect Boundary Element Analysis is employed for developing a computational pass-by noise simulation capability. An inverse analysis algorithm is developed in order to generate the definition of the main noise sources in the numerical model. The individual source models are combined for developing a system model for pass-by noise simulation. The developed numerical techniques are validated through comparison between numerical results and test data for component level and system level analyses. Specifically, the source definition capability is validated by comparing the actual and the computationally reconstructed acoustic field for an engine intake manifold. The overall pass-by noise simulation capability is validated by computing the maximum overall sound pressure level for a vehicle under two separate driving conditions.
Technical Paper
Allan W. Blunt, Mark A. Shea
The design, development and testing of electric brakes for the DARPA/USAF/Boeing X-45A Unmanned Combat Air Vehicle (UCAV) demonstrator is discussed. The UCAV effort presented a new set of challenges and capability requirements for the brake system. A selection of electric brake technical development results is presented.
Technical Paper
Sybil Sharvelle, JoAnn Silverstein, David Klaus, Laura Supra
A detailed study was conducted on nitrification using a bench top bioprocessor system proposed for water recycling of a urine-soap wastewater expected to be generated by crewmembers on International Space Station (ISS) or similar long-term space missions. The bioprocessor system consisted of two packed bed biofilm reactors; one anoxic reactor used for denitrification and one aerobic reactor used for nitrification. lnfluent wastewater was a mixture of dilute NASA whole body soap (2,300 mg/L) and urea (500 mg/L as organic nitrogen). During two months of steady-state operation, average chemical oxygen demand (COD) removal was greater than 95%, and average total nitrogen removal was 70%. We observed that high levels of nitrite consistently accumulated in the aerobic (nitrifying) reactor effluent, indicating incomplete nitrification as the typical end product of the reaction would be nitrate.
Honeywell is building a technology center in Gurgaon, India, to expand its global research capabilities in refining, petrochemical, and other technologies to better serve customers in the region. The company will invest $34 million to establish the 400,000-ft² center at an existing Honeywell-owned property.
For the average person, what constitutes a hot day is subjective. The same with a cold day. For aerospace engineers, though, it’s not subjective—and there’s a new SAE standard to prove it. The S-15, Gas Turbine Performance Simulation Nomenclature and Interfaces Committee, recently published ARP210, “Definition of Commonly Used Day Types (Atmospheric Ambient Temperature Characteristics Versus Pressure Altitude).”
Designed to provide key data for automated steering, stability, and vehicle controls in a variety of agricultural, construction, and material-handling equipment applications, Honeywell provides the HG1171 series six-degrees-of-freedom inertial measurement unit sensor.
Honeywell’s SNDH Series quadrature general industrial speed and direction sensors improve vehicle service by separating the sensor and bearing in electric motor applications, allowing users to service the sensor without removing the bearing from the motor drive.
The Advanced Turbine Engine Co. LLC, a Honeywell and Pratt & Whitney joint venture, was awarded a $108 million contract by the U.S. Army for the Advanced Affordable Turbine Engine (AATE) technology demonstrator program.
Honeywell signed a $1 billion contract with AirTran Airways to supply avionics on new aircraft and provide maintenance on AirTran’s entire fleet through the year 2030. The company will supply AirTran with its full avionics portfolio for new aircraft—up to 150 Boeing 737s.
The Cadillac model comes out in late spring, with ATS to follow in mid-summer also with R-1234yf. Paperwork regulatory issues delay production from DuPont-Honeywell joint venture plant in China. SAE committee chairman asks EPA to expedite approvals for service equipment.
Jeju Air, the fastest-growing low-cost carrier (LCC) in South Korea, selected Honeywell Aerospace to provide a full suite of avionics for its new fleet of Boeing 737-800 NG passenger aircraft. This contract covers six aircraft that are expected to be delivered between 2013 and 2017.
A study by a team of engineers from Honeywell provides evidence for an equivalency of performance of a head-down, primary flight display with synthetic vision and Enhanced Vision—a Combined Vision System—to the performance with a HUD with IR imagery.
The SAE 2012 High Efficiency IC Engines Symposium session on engine technologies showed how near-term technologies are squeezing ever more fuel efficiency from standard spark ignition and compression ignition engines.
Getting a rear-wheel-drive vehicle up a 30° incline is a fairly easy task when 150 kids are behind the driving controls.
Yes, whopper-sized engines are still around, but even engineers admit there is a lot to like about smaller displacement engines.
Honeywell adds the SS39ET integrated circuits series to its linear Hall-effect magnetic position sensor product line.
Aircraft companies are racing to give passengers unique abilities to go online for entertainment, information, and business activities in an effort to gain market share and revenue.
Viewing 1 to 30 of 102


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