Tags 2016 Chevy Colorado diesel: A 7,700-pound hauler, 30-plus mpg runabout 0 6 Photos 2015 Ford Focus offers more safety and better looks More From Roadshow Ford null Originally published at 12:08 p.m. PT.Update, 1:40 p.m. PT: Adds statement from Ford. 2019 Hyundai Elantra GT N Line review: A legit compact performer Enlarge ImageFord’s Focus and Fiesta models have been plagued by serious issues with their PowerShift dual-clutch automatic transmissions. Roadshow Way back in 2009, Ford’s new Fiesta hit dealer showrooms across the US. It was the first Fiesta to hit the US in decades and it looked better than ever, and its fuel economy figures were seriously impressive. That latter attribute was thanks in large part to their new and innovative dual-clutch automatic transmissions, which Ford called PowerShift, and referred to internally as DPS6.Here we are 10 years later, and those transmissions are proving to be a massive thorn in not only owners’ sides, but increasingly they’re becoming an issue for the mothership back in Dearborn. The problems with the transmission include many reports from owners that it will drop into neutral between gears, leading to a lack of acceleration. Other reports state that the cars will lurch forward and shift jerkily.These issues are so prevalent, and Ford’s reaction to owners’ complaints have reportedly been so unsatisfactory, that now the US government is looking at getting involved.Several Democratic congressmen — including Rep. Frank Pallone of New Jersey, who is on the committee that oversees the National Highway Traffic Safety Administration — have called for a review of the ongoing situation, the Detroit Free Press reports.Ford dealers interviewed by the Free Press stated that they hadn’t received clear instructions on how to handle customer concerns going forward, or how (or whether) to charge customers for transmission repairs to their PowerShift-equipped vehicles.Ford’s representatives stated that the company had issued a service bulletin explaining how to handle the increased number of customer concerns and informed dealers that affected vehicles brought in before July 19 would receive extended warranty coverage, something it’s done before for individual components of the transmission. The bulletin promised further communication on or around the 19th, but to our knowledge, no new bulletins have been issued.”The DPS6 transmission was all-new technology from Getrag when it was introduced nearly a decade ago to improve fuel economy in Fiesta and Focus models. We launched those vehicles in good faith — like others, only after they reached key development milestones. Quality issues emerged after they were on the road,” Ford representatives said in a statement. “We acted quickly and determinedly to address those issues. Resolving them took longer than we expected — that frustrated and was inconvenient for many customers, some still today, which we regret. Along the way, we have rightly gone to great lengths to correct the problems: understanding what caused them, alerting dealers and consumers, recommending and making repairs, and extending warranties. In the meantime, automobiles using the DPS6 transmission were and remain safe to drive.”Given the likely cost of each individual repair, combined with the sheer number of vehicles equipped with the faulty gearboxes around the US, a forced recall by NHTSA would likely be a very, very expensive proposition for Ford. 2014 Ford Fiesta Ford Now playing: Watch this: 2016 Ford Explorer review: Go road-tripping in Ford’s updated, EcoBoost-powered SUV Share your voice 2:31 Car Industry Hatchbacks Sedans
Share To embed this piece of audio in your site, please use this code: From Tuesday’s Senate debate between Ted Cruz and Beto O’Rourke, to the disappearance of a Saudi journalist, to the rescheduled debate between Congressman John Culberson and challenger Lizzie Pannill Fletcher, to the HISD Board playing politics with the interim Superintendent position, our experts break down the latest political stories with an eye for how they might affect Houston and Texas.Joining host Craig Cohen for this week’s discussion are David Branham, professor of political science at the UH-Downtown, and Mark Jones from Rice University’s Baker Institute for Public Policy. X Listen 00:00 /25:43
PausePlay% buffered00:0000:00UnmuteMuteDisable captionsEnable captionsSettingsCaptionsDisabledQuality0SpeedNormalCaptionsGo back to previous menuQualityGo back to previous menuSpeedGo back to previous menu0.5×0.75×Normal1.25×1.5×1.75×2×Exit fullscreenEnter fullscreen Play A movie of the trajectory of power output vs. wind speed signals for a wind turbine reveals very turbulent fluctuations. Credit: Patrick Milan, et al. ©2013 American Physical Society “Looking at an operating wind turbine, one may get the impression that the turbine turns smoothly, but looking at the power output, which is the consequence of the forces and torques inside the machinery, we see that the fluctuations are very turbulent,” Peinke told Phys.org. “Changes of MW (more than one thousand horsepower) in seconds become obvious. Thus one may compare a wind turbine with an airplane in the landing phase during a very windy situation. From outside, the airplane may look it’s going quite smoothly, but inside there is another impression caused by turbulent dynamics. One should also note that a wind turbine has to operate permanently in this ‘turbulent landing’ condition.” Citation: Wind turbines operate under great turbulence, with consequences for grid stability (2013, April 19) retrieved 18 August 2019 from https://phys.org/news/2013-04-turbines-great-turbulence-consequences-grid.html Journal information: Physical Review Letters Copyright 2013 Phys.org All rights reserved. This material may not be published, broadcast, rewritten or redistributed in whole or part without the express written permission of Phys.org. The model also reveals that moderately intermittent wind power is converted to highly intermittent power output. In other words, wind turbines do not only transfer wind intermittency to the grid, but they also amplify it. For instance, the researchers observed that changes in wind speed of about 11 m/s within 8 seconds may cause nearby wind turbines to change their power output by about 80%. The researchers attribute this amplification to the nonlinear conversion process and fast reaction time of the output to changes in wind speed.”The features of small-scale turbulence are mapped by the wind turbines directly into the electric grid,” Peinke said. “As turbulence and in particular the statistics of small-scale wind fluctuations are still considered to be an unresolved problem, this lack of knowledge may become important in the power grids, especially if such power grid are dominated by wind power. As these phenomena take place in the range of seconds, the dynamics of the power grid in these time scales have to be investigated in detail. One has clearly to state that the first step to solve a problem is to be aware of it and to understand it.”The data also shows that wind power intermittency does not only affect the output of individual turbines, as previous research has shown, but it also extends to entire wind farms, which has not been observed before. The researchers explain that wind farm intermittency is somewhat counterintuitive, since it might be expected that summing the output of wind turbines will average out their turbulent fluctuations. However, wind farm intermittency may be explained by long-range correlations observed in winds. While the wind farm the scientists observed covered an area of about 4 km2, wind correlations have previously been observed to extend to lengths of hundreds of kilometers. Based on these observations, the researchers expect that wind farm intermittency effects may persist up to these large scales.Overall, the physicists conclude that their results stress the importance of accounting for the intermittent and multifractal nature of wind power when designing components for wind power, including energy storage technologies. They note that the situation is similar to the findings from many years ago of the intermittent and multifractal nature of the stock market. In both areas, frequent occurrences of fluctuations must be understood and accounted for in order to maintain stability and avoid widespread disruption.In the future, the researchers plan to further investigate the consequence of wind turbulence on grid stability and develop methods to minimize the negative effects. New turbulence models may help lead to new concepts that reduce the power and load fluctuations on the grid.”For all of these topics, a deep and comprehensive understanding of the complexity of turbulence is indispensable,” Peinke said. Explore further Using fluctuating wind power (Phys.org) —While previous research has shown that wind turbulence causes the power output of wind turbines to be intermittent, a new study has found that wind turbulence may have an even greater impact on power output than previously thought. The researchers modeled the conversion of wind speed to power output using data from a rural wind farm. The results showed that the intermittent properties of wind persist on the scale of an entire wind farm, and that wind turbines do not only transfer wind intermittency to the grid, but also increase it. The findings highlight the importance of fully understanding the physics of wind turbulence in order to ensure future grid stability. The researchers, Patrick Milan, Matthias Wachter, and Joachim Peinke, at the ForWind—Center for Wind Energy Research at the University of Oldenburg in Germany, have published their study “Turbulent Character of Wind Energy” in a recent issue of Physical Review Letters.In their paper, the researchers address the challenges that large-scale wind energy production may bring to future power grids. They explain that today’s grids are powered mainly by a few large generators with controllable input (mostly gas, coal, hydraulic, and nuclear power plants). Power generation from these sources can be modified automatically in order to balance power generation and consumption, and thus ensure grid stability. But while today’s power sources are largely controllable, wind power is uncontrollable and highly intermittent. For time scales larger than several minutes, the conversion of wind speed into electrical power can be modeled by a standard average power curve. But at smaller time scales, the researchers found that the conversion process diverges from this curve. Instead, short-scale conversion follows a more complex pattern involving multifractal scaling that is reminiscent of a 1962 theory of turbulence developed by mathematician Andrey Kolmogorov. Screenshot of a movie (see below) showing the power output vs. wind speed signals for a wind turbine. Credit: Patrick Milan, et al. ©2013 American Physical Society More information: Patrick Milan, et al. “Turbulent Character of Wind Energy.” PRL 110, 138701 (2013). DOI: 10.1103/PhysRevLett.110.138701 This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.
In an initiative to strengthen tourism and to promote the culture of Jammu and Kashmir, Tourism Department organised a massive road show at Lalit Hotel in the national Capital. North India’s prominent travel trade representatives were invited to witness the impressive presentation from the department which showcased Jammu and Kashmir as one of the best destinations for its natural beauty, landscapes, gushing water streams, adventure tourism, crafts and cuisine, history and heritage, adventure tourism, lake tourism, MiCE and golf tourism. Also Read – ‘Playing Jojo was emotionally exhausting’Farooq Ahmed Shah, Secretary, Tourism briefed the gathering about the 5500 year old history of Kashmir, the heritage and hospitality of the state for which Jammu and Kashmir is famous all over the world. He assured to provide best and upgraded services to visitors in 2016.RK Verma, Director, Tourism, Jammu; Mahmood A Shah, Director, Tourism, Kashmir and other officials of Tourism, JKTDC and SKICC were present at the road show.