2010 Nissan Gt-r Coupe Premium on 2040-cars

Auto blog

2014 Nissan Leaf EVs recalled for missing welds

The Nissan Leaf has been recalled before, for problems with the passenger-side airbags. Early models of the car has also had start-up issues, but those did not lead to a recall. Today, we're learning about another problem with the world's most popular electric vehicle. In April, the National Highway Traffic Safety Administration issued a recall of a small number of 2014 model year Leaf EVs - just 211 units that were made between February 28 and March 12 of this year – and reminded the world about it this morning with a Tweet. The problem, NHTSA says, is that, "the front structural member assembly may be missing welds," and that means that the car's structural integrity could be compromised in a crash. You don't say. Starting in the middle of June, Nissan will look at the vehicles that could be missing welds and offer replacements for free. If you have a potentially affected vehicle, Nissan should be contacting you soon, or you can call the automaker at the number listed below. Report Receipt Date: APR 16, 2014 NHTSA Campaign Number: 14V192000 Component(s): Potential Number of Units Affected: 211 Manufacturer: Nissan North America, Inc. SUMMARY: Nissan North America, Inc. (Nissan) is recalling certain model year 2014 LEAF vehicles manufactured February 28, 2014, through March 12, 2014. The front structural member assembly may be missing welds, which could reduce the structural integrity of the vehicle if the vehicle is involved in a crash. As such, these vehicles fail to meet the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 208, "Occupant Crash Protection," and 305, "Electric-Powered Vehicles: Electrolyte Spillage and Electrical Shock Protection." CONSEQUENCE: Missing welds may effect the vehicle's integrity in the event of a crash, increasing the risk of injury to the vehicle's occupants. REMEDY: Nissan will notify owners, and dealers will inspect to see if any of the welds are missing. Any vehicle missing welds will be replaced, free of charge. The recall is expected to begin by mid-June 2014. Owners may contact Nissan at 1-800-647-7261. NOTES: Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

Nissan and NASA team up on autonomous zero-emissions test fleet

Nissan and NASA have announced a collaboration on autonomous vehicles that, if we're honest, makes more sense to us than Infiniti partnering with Red Bull. The two are commencing a five-year R&D program to explore autonomous drive systems, human-machine interfaces, network-enabled applications, and software analysis and verification. What's more: the test fleet will be zero emissions and rolling around NASA's Ames Research Center by the end of this year. We will assume that means autonomous Leafs, but Nissan could be working on a new vehicle for the purpose. Nissan CEO Carlos Ghosn said the company will begin offering autonomous features "beginning in 2016," and wants to have commercially available self-piloting vehicles that can "navigate in nearly all situations," including urban environments, by 2020. Who better to assist than the people who put a self-driving rover on a planet that never gets closer than 34 million miles away? What does NASA get out of it? Access to Nissan's materials and component developments, prototyping systems, and robotic software test beds. Sounds like everybody wins. The press release below has more information. Nissan and NASA partner to jointly develop and deploy autonomous drive vehicles by end of year SUNNYVALE, Calif. Jan. 8, 2015 - Nissan Motor Co., through its North American-based organization, and NASA today announced the formation of a five-year research and development partnership to advance autonomous vehicle systems and prepare for commercial application of the technology. Researchers from Nissan's U.S. Silicon Valley Research Center and NASA's Ames Research Center at Moffett Field, Calif., will focus on autonomous drive systems, human-machine interface solutions, network-enabled applications, and software analysis and verification, all involving sophisticated hardware and software used in road and space applications. Researchers from the two organizations will test a fleet of zero-emission autonomous vehicles at Ames to demonstrate proof-of-concept remote operation of autonomous vehicles for the transport of materials, goods, payloads and people. For NASA, these tests parallel the way it operates planetary rovers from a mission control center. The first vehicle of that fleet should be testing at the facility by the end of 2015. "The work of NASA and Nissan – with one directed to space and the other directed to earth, is connected by similar challenges," said Carlos Ghosn, president and CEO of Nissan Motor Co.

Is the skill of rev matching being lost to computers?

If the ability to drive a vehicle equipped with a manual gearbox is becoming a lost art, then the skill of being able to match revs on downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. The usefulness of rev matching in street driving is limited most of the time – aside from sounding cool and impressing your friends. But out on a race track or the occasional fast, windy road, its benefits are abundantly clear. While in motion, the engine speed and wheel speed of a vehicle with a manual transmission are kept in sync when the clutch is engaged (i.e. when the clutch pedal is not being pressed down). However, when changing gear, that mechanical link is severed briefly, and the synchronization between the motor and wheels is broken. When upshifting during acceleration, this isn't much of an issue, as there's typically not a huge disparity between engine speed and wheel speed as a car accelerates. Rev-matching downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. But when slowing down and downshifting – as you might do when approaching a corner at a high rate of speed – that gap of time caused by the disengagement of the clutch from the engine causes the revs to drop. Without bringing up the revs somehow to help the engine speed match the wheel speed in the gear you're about to use, you'll typically get a sudden jolt when re-engaging the clutch as physics brings everything back into sync. That jolt can be a big problem when you're moving along swiftly, causing instability or even a loss of traction, particularly in rear-wheel-drive cars. So the point of rev matching is to blip the throttle simultaneously as you downshift gears in order to bring the engine speed to a closer match with the wheel speed before you re-engage the clutch in that lower gear, in turn providing a much smoother downshift. When braking is thrown in, you get heel-toe downshifting, which involves some dexterity to use all three pedals at the same time with just two feet – clutch in, slow the car while revving, clutch out. However, even if you're aware of heel-toe technique and the basic elements of how to perform a rev match, perfecting it to the point of making it useful can be difficult.