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Nissan alters all CVTs to act less like a stretched rubberband

Among automotive enthusiasts, no one seems to hold a neutral opinion when it comes to continuously variable transmissions. CVTs are either praised for their ability to boost fuel economy or chided for their occasionally poor driving dynamics. Nissan is among the masters of these un-shifting gearboxes in the US, and it uses them in many vehicles in its lineup. However, for the 2015 model year, several models are getting a software update to make their CVTs a bit more like a conventional automatic.
To give drivers the option of feeling gearshifts while on the road, Nissan is adding its D-Step Shift Logic feature to the CVTs in multiple vehicles. Steve Powers, Nissan's senior manager of powertrain performance, told Autoblog the system forces the transmission to "hold a ratio and then shift" to simulate the way that a traditional automatic would. It's simply a change in software, but the company "can't do it to older CVTs," he said, because it would require changes to transmission logic, as well. According to Automotive News, the upgrade is coming to the 2015 Versa, Versa Note (pictured above), Sentra, V6-equipped Altima, Pathfinder and Quest. "We're rolling it out to all programs," said Powers.
Interestingly, buyer perception appears to be pushing the upgrade. John Curl, a Nissan North America regional product manager, told Automotive News that the decision to add the tech partially comes because some owners are bothered that the CVTs aren't changing gears. According to Powers, D-Step "avoids the rubber band feel," that many drivers didn't like. The different sensation of these transmissions seems like something consumers would notice during the test drive, or that the salesperson would inform them about. The same issue cropped up last year when the company was facing customer satisfaction problems among new buyers customers' unfamiliarity with the gearboxes.

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.

'I'm glad he did it': Carole Ghosn slams Japanese justice system

BEIRUT — Carlos and Carole Ghosn, the former first couple of carmaker Nissan, are united again in Beirut. They hold hands in the street and whisper together in a mix of Arabic and French. They kiss. But the pair's most visceral display of unity comes when they talk about Carlos Ghosn's former home. "I'm done with Japan," said Carole Ghosn in an interview with her husband in a private house in Beirut. Two weeks ago, Carlos Ghosn made a dramatic escape from house arrest in Japan, where he was awaiting trial on charges of under-reporting earnings, breach of trust and misappropriation of company funds. He denies all charges. Shortly after Ghosn appeared in Beirut, Japanese authorities issued an arrest warrant for Carole on suspicion of alleged perjury related to the misappropriation charge against her husband. "What they're accusing me of is a bit of a joke," said the 54-year-old Lebanese-American national, who spent many years as a fashion designer in New York and whose children live in the U.S. city.  "I testified for hours and they told me you are free to go, and now, nine months later ... this comes up. They are vindictive. This has nothing to do with the law."   Related: Yamaha warns to stay out of large musical instrument cases after Ghosn escape Ghosn says French ambassador told him: 'Nissan is turning against you'   Carlos Ghosn was even more adamant. "I spent 18 years in Japan; I never suspected this brutality, this lack of fairness, this lack of empathy." Tokyo prosecutors have said his allegations of a conspiracy are false and that he has failed to justify his acts. The plan to flee to his childhood home of Lebanon developed quickly with a small group of people, a "reasonable price" and utter secrecy, he said. "The first rule if you want to do something like is that no member of your family should be aware because they become very anxious," he added. Asked whether she would have dissuaded him from escaping, Carole Ghosn blurted: "Yes!" But then she paused, looked at her husband and added: "No. I mean, actually, let me rephrase. If you told me this at the beginning, I would have said, 'No, of course not. You're going to fight this and prove your innocence.' ... But then, with time, we saw how the prosecutors were behaving ... I said 'Oh my God, my husband is never going to get a fair trial,' and I was desperate." "I'm happy he did it," she said. Japan's justice minister has said Ghosn's escape from his trial could constitute a crime.