2007 Nissan Murano Sl Sport Utility 4-door 3.5l on 2040-cars

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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.

Recharge Wrap-up: Renault-Nissan at COP21, fast charging viability

Nissan and Renault's combined fleet of 200 EVs drove over 175,000 kilometers (about 108,700 miles) during the COP21 environmental summit in Paris. The largest fleet of EVs for any international conference served as shuttles for attendees, saving almost 182 barrels of oil and 18 tons of CO2 emissions. In addition to providing the Nissan Leaf, Nissan e-NV200, and Renault Zoe EV shuttles, the Renault-Nissan Alliance also set up a network of 90 chargers to support the fleet. 13 of the 27 quick and semi-quick chargers will remain in place for public use. Read more in the press release below.Siemens names Ann Arbor, Michigan for its first Center of Excellence for Intelligent Traffic Technology. The company will implement new and upgrade existing traffic technologies in the city, including cloud-based traffic management software, local controller software and an adaptive traffic control system designed to improve traffic flow and safety. In a college town with highly varying numbers of students and visitors throughout the year, "the need to move traffic in and out of the city efficiently is crucial not only for economic and environmental impacts, but for quality of life for Ann Arbor residents," says Marcus Welz, president of Siemens Intelligent Traffic Systems. Many Ann Arborites (your author included) would surely agree. Read more at Green Car Congress, or in the release from Siemens.A study in Ireland found that public fast charging could soon become commercially viable. The researchers found parking spots to be the most popular public charging locations, and that fast chargers saw the most frequent use, suggesting commercial viability for the infrastructure in the short- to medium-term. The study also found that most drivers prefer to charge at home, and do so during peak hours. Incentivization could be necessary to break people from this habit. Read more at Green Car Congress.

Ousted Renault-Nissan boss Carlos Ghosn leaves Japan for Lebanon

BEIRUT/TOKYO — Ousted Nissan boss Carlos Ghosn was in his childhood home of Lebanon on Tuesday after fleeing what he said was a “rigged” justice system in Japan, raising questions about how one of the worldÂ’s most-recognized executives slipped away while on bail. GhosnÂ’s abrupt departure marks the latest dramatic twist in a year-old saga that has shaken the global auto industry, jeopardised the alliance of Nissan Motor Co Ltd and top shareholder Renault SA and cast a harsh light on JapanÂ’s judicial system. “I am now in Lebanon and will no longer be held hostage by a rigged Japanese justice system where guilt is presumed, discrimination is rampant, and basic human rights are denied,” Ghosn, 65, said in a brief statement on Tuesday. “I have not fled justice - I have escaped injustice and political persecution. I can now finally communicate freely with the media, and look forward to starting next week.” Tokyo officials have previously said the system is not inhumane and that Ghosn, who is facing trial on financial misconduct charges he denies, has been treated like any other suspect. It was unclear how Ghosn, who holds French, Brazilian and Lebanese citizenship, was able to orchestrate his departure from Japan, given that he had been under strict surveillance by authorities while out on bail and had surrendered his passports. According to a senior Lebanese foreign ministry source, Ghosn entered Lebanon legally on a French passport and using his Lebanese ID with normal security procedures. Asked if Ghosn used a French passport, the French foreign ministry press service said it had no immediate comment. Ghosn arrived in Beirut on a private jet from Istanbul on Monday, people familiar with the matter told Reuters. Immigration authorities had no record of Ghosn leaving the country, Japanese public broadcaster NHK said. A person resembling him entered Beirut international airport under a different name, NHK reported, citing an unidentified Lebanese security official. His lawyers were still in possession of his three passports, one of his lawyers, Junichiro Hironaka, told reporters. Hironaka, in comments broadcast live on NHK, said the first he had heard of GhosnÂ’s departure was on the news this morning and that he was surprised. He also said it was “inexcusable behaviour”. Japan has extradition treaties with only the United States and South Korea, according to the justice ministry, meaning it could be difficult to force Ghosn to return to stand trial.