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Viewing 1 to 30 of 3853
2017-09-23
Technical Paper
2017-01-2013
Zhe Xu
Abstract The rapid development of connected vehicle technology provides a promising platform for traffic monitoring and traffic data collection. In the connected vehicle environment, the vehicles equipped with wireless communication devices can transmit vehicle safety messages to other connected vehicles and the Roadside Unit (RSU). The trajectory information in the safety message may provide potential usage for macroscopic traffic states estimation in the urban street network. Over the last few years, the applications of a macroscopic traffic states model, the Macroscopic Fundamental Diagram (MFD) has attracted increased attention. However, the detection of MFD remains a challenging task. This paper explores a potential method of measuring the macroscopic traffic states in terms of MFD based on Vehicle-to-Infrastructure (V2I) connected vehicle data. The methodology of generating MFDs is conducted and the potential characteristics of the macroscopic traffic states are explored.
2017-09-23
Technical Paper
2017-01-2011
Suyash Singh, Ankur Mathur, Sandeep Das, Purnendu Sinha, Vinay Singh
Abstract In the Smart Cities, main objective is to promote cities that provide core infrastructure and give a decent quality of life to its citizens, a clean and sustainable environment and application of ‘Smart’ Solutions. The process said for utilization of available resources is the best fit for our concept. Our concept is to convert and refurbish the old and scrap vehicles which will increase their longevity and can be used in any smart city in India or abroad. The ultimate aim to provide this technology for the development of any new smart city in India is the utilization of available resources and reduction in the junk materials and environmental pollution. Refurbishing the old and scrap vehicles with replacement of IC engines doesn’t mean that they will be kept as a scrap and be thrown away, our idea is to utilize maximum of all the available resources. The IC engines taken out of these vehicles will be re-used appropriately.
2017-09-23
Technical Paper
2017-01-2000
Jianping Li, Jian Wu, Hao Sun, Yuyao Jiang, Weiwen Deng, Bing Zhu
Abstract Simulation has been considered as one of the key enablers on the development and testing for autonomous driving systems as in-vehicle and field testing can be very time-consuming, costly and often impossible due to safety concerns. Accurately modeling traffic, therefore, is critically important for autonomous driving simulation on threat assessment, trajectory planning, etc. Traditionally when modeling traffic, the motion of traffic vehicles is often considered to be deterministic and modeled based on its governing physics. However, the sensed or perceived motion of traffic vehicles can be full of errors or inaccuracy due to the inaccurate and/or incomplete sensing information. In addition, it is naturally true that any future trajectories are unknown. This paper proposes a novel modeling method on traffic considering its motion uncertainties, based on Gaussian process (GP).
2017-08-12
Article
Eaton manufactured engine-driven pumps for the first flying MC-21 prototype and supplied additional system sub-components including thermal bypass valves, while Pratt & Whitney supplied its PW1000G GTF engine and Rockwell Collins, Honeywell, and Elbit supplies various avionics systems.
2017-08-12
Article
A Protonex and Insitu development team focused on packaging and integrating existing PEM fuel cell technology with the airframe. The resulting design comprised a redundant double stack design that produces 1.2 kW of power.
2017-08-10
Article
New compact utility leverages Fuji Heavy Industries' latest global platform for improved ride, handling, NVH attenuation and crashworthiness. But power and torque are lacking.
2017-08-10
Article
The Franco-Japanese alliance continues to show the industry how to meld two OEMs successfully.
2017-08-08
Article
Custom-tailored for the Indian market and its demanding customer requirements by Daimler AG, the BharatBenz brand product portfolio features medium- and heavy-duty segments as well as an all-new heavy-duty range added in 2017.
2017-08-01
Article
All the major business jet manufacturers have used this relatively quiet period, following the post-2008 slump, to invest in the design and development of new products.
2017-07-25
Article
See that pickup truck in your rearview mirror, approaching fast with siren blaring and red lights flashing?
2017-07-24
Article
The new Volvo VNL series is the beneficiary of the truck maker's SuperTruck program, applying lessons learned and advanced technology to achieve an up to 7.5% improvement in fuel efficiency. Driver comfort and productivity, active and passive safety systems and enhanced vehicle uptime through over-the-air updates were other high priorities for engineers and designers of the next-generation long-haul tractor.
2017-07-20
Article
With its Ride Assist technology, Honda R&D moves two-wheelers toward autonomous capability.
2017-07-18
Article
Mercedes-Benz reveals the production version of its first-ever pickup truck, developed and manufactured with considerable help from partner Nissan-Renault.
2017-07-18
Article
In an era when "fake news" is a hot topic, much of the media still doesn't understand the difference between "electric" and "electrified" vehicles.
2017-07-14
Article
Designed in Japan with exterior surfacing finalized at Honda’s California studio, the 2018 Accord is up to 176 lb (89 kg) lighter than the outgoing model, depending on trim level. Key technical features include two new turbocharged gasoline engines, the first use of a 10-speed automatic transaxle (Honda’s own 10AT) in front-drive sedan, and the return to the low-cowl/thin pillar body architecture.
2017-07-14
Article
Jaguar claims a number of firsts for its new compact SUV
2017-07-13
Article
Researchers from the National Renewable Energy Laboratory perform statistical analysis based on a large collection of real-world U.S. truck usage data to estimate the fraction of total miles that are technically suitable for platooning.
2017-07-10
Article
Reconfigurable aerodynamic aids are stretching performance-car envelopes in every direction.
2017-07-10
Technical Paper
2017-28-1932
Ganesh Dharmar, Ravichandrika Bhamidipati, Satheesh Kumar
Abstract Traffic awareness of the driver is one of the prime focus in terms of pedestrian and road safety. Driver experience plays a significant role and driving requires careful attention to changing environments both within and outside the vehicle. Any lapse in driver attention from the primary task of driving could potentially lead to an accident. It is observed that, lack of attention on the ongoing traffic and ignorant about the traffic information such as traffic lights, road signs, traffic rules and regulations are major cause for the vehicle crash. Traffic signals & signage are the most appropriate choice of traffic control for the intersection, it is important to ensure that driver can see the information far away from the intersection so that he/she can stop safely upon viewing the yellow and red display. Then, upon viewing the signal operations and conditions the motorist can stop his/her vehicle successfully before entering the intersection.
2017-07-03
Article
Tesla pegs July 28 for the first customer deliveries of its heavily-anticipated $35,000 Model 3 compact sedan.
2017-07-02
Article
On June 28, 2017, days ahead of the July 2017 U.S. Air Force light attack aircraft experiment, the Senate Armed Services Committee passed a preliminary vote for a proposed annual defense budget that included $1.2 billion for “a fleet of Light Attack/Observation aircraft.”
2017-06-27
Article
Unraveling GM ktechnology from Opel to prepare for PSA's takeover means dealing with many issues from platforms to electrified propulsion and plants. Expert Dr. Paul Nieuwenhuis provides insight.
2017-06-25
Article
The 2018 Stelvio leverages the brilliant Guilia chassis and sparking 2.0-L engine, making Alfa Romeo's first-ever crossover a dynamic treat.
2017-06-10
Article
While 3D printing offers innovative new solutions for the future of aerospace manufacturing, it also enhances traditional aerospace manufacturing processes like investment casting.
2017-06-05
Technical Paper
2017-01-1901
Christian Glandier, Stefanie Grollius
Abstract This paper presents the application to full vehicle finite element simulation of a steady state rolling tire/wheel/cavity finite element model developed in previous work and validated at the subsystem level. Its originality consists in presenting validation results not only for a wheel on a test bench, but for a full vehicle on the road. The excitation is based on measured road data. Two methods are considered: enforced displacement on the patch centerline and enforced displacement on a 2D patch mesh. Finally the importance of taking the rotation of the tire into account is highlighted. Numerical results and test track measurements are compared in the 20-300 Hz frequency range showing good agreement for wheel hub vibration as well as for acoustic pressure at the occupant’s ears.
2017-06-05
Technical Paper
2017-01-1890
Xingyu Zhang, Bo Yang, Manchuang Zhang, Sanbao Hu
Abstract H-Bahn ("hanging railway") refers to the suspended, unmanned urban railway transportation system. Through the reasonable platform layout, H-Bahn can be easily integrated into the existing urban transit system. With the development of urban roads, the associated rail facilities can be conveniently disassembled, moved and expanded. The track beam, circuits, communication equipment, and sound insulation screen are all installed in a box-type track beam so that the system can achieve a high level of integration and intelligence. The carriage of the modern H-banh vehicle is connected with the bogies by two hanging devices. The vehicle is always running in the box-type track beam; therefore there are less possibilities of derailment. Consequently, the key work focuses on the running stability evaluation and curve negotiation performance analysis.
2017-06-05
Technical Paper
2017-01-1863
Bhaskar Avutapalli, Mayuresh Pathak, Shalini Solipuram, Ken Buczek, Aaron Lock
Abstract Road noise and speech intelligibility are becoming ever more important, irrespective of the vehicle size, due to vehicle refinement as well as connectivity with mobile communication equipment. With better aerodynamic designs, development of refined powertrains, and a tectonic shift from I.C. engine to electric motors, road noise and wind noise will become more apparent to the customer and hence will become a priority for automakers to refine their vehicles. This paper describes the efforts undertaken to identify the road noise paths and develop countermeasures for a compact SUV vehicle. A hybrid test/CAE approach was followed to improve road noise performance of this vehicle. This effort involved developing tire CAE models from physical hardware and creating synthesized road-load input from data taken on roads.
Viewing 1 to 30 of 3853

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