Nissan Maxima 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.

Renault-Nissan to build EVs in China with Dongfeng

BEIJING — Nissan and its partner Renault will build electric cars in China in a new venture with Dongfeng Motor, as global automakers scramble to get ready for stringent electric vehicle quotas being introduced by the nation. China, the world's biggest auto market, wants all-electric battery cars and plug-in hybrid vehicles to make up at least a fifth of the country's auto sales by 2025, as part of its solution to tackle alarming pollution levels in major cities. Ford announced earlier this month it was exploring setting up a joint venture with car maker Anhui Zotye Automobile Co to build electric vehicles in China under a new brand. Tesla, Daimler, Volkswagen and General Motors have already announced plans for making electric vehicles in China, The new joint venture, called eGT New Energy Automotive Co, will be owned 25 percent each by Nissan and Renault with Dongfeng owning 50 percent, Nissan and Renault said in a statement on Tuesday. They said eGT will design a new electric vehicle on a subcompact crossover SUV platform of the Renault-Nissan alliance. "The establishment of the new joint venture with Dongfeng confirms our common commitment to develop competitive electric vehicles for the Chinese market," Carlos Ghosn, chairman and chief executive officer of the Renault-Nissan alliance, said in the statement. The statement did not give details of financial commitments of the joint venture partners or say by when the vehicles will be launched. Dongfeng already partners Nissan in China. Both Nissan and Renault already market electric cars. Nissan's Leaf compact hatchback has become the world's top-selling electric car since its launch in 2010, while Renault began selling its Zoe model in 2012. The game changer for global automakers, many of whom until recently have resisted an industry shift to heavily electrified vehicles, is China, an auto market with strong potential for growth where stringent policies favoring cleaner energy cars are being aggressively pursued. Under China's latest proposals, electric vehicle sales quotas, which are expected to take effect as early as 2018, are due to require 8 percent of automakers' sales to be battery electric or plug-in hybrid vehicles by next year, rising to 10 percent in 2019 and 12 percent in 2020.

Nissan: We lose money on each Leaf replacement battery

Nissan has been playing its cards pretty close to its chest when it comes to the production costs for Leaf battery packs. The company recently put a price on replacement batteries for customers at $5,500 plus the requirement to return the old battery. If the decommissioned battery is worth $1,000 to Nissan, as they have stated, that means the battery costs about $6,500 to make, right? Maybe even less if Nissan wants to turn a profit, as automakers are wont to do? Wrong.
Green Car Reports spoke to Nissan about these battery costs, and found that the automaker actually loses money on selling the replacement battery for the Leaf at the current price. Jeff Kuhlman, Nissan's vice president of global communications said, "Nissan makes zero margin on the replacement program. In fact, we subvent every exchange." All you English majors will know that "subvent" is a fancy way to say "subsidize." Kuhlman added, though, "We have yet to sell one battery as part of the program."
The fact that Nissan offers its replacement batteries for less than it costs to manufacture them is telling of a company both cares about what its customer needs and is dedicated to the success of its product. In this case, both of those things encourage people to give up fossil fuels and adopt electric mobility, which is heartening. As more people switch to battery-powered driving, though, battery technology should become better and cheaper, and the scale of production should cause manufacturing costs to decrease. Eventually, Nissan could easily see itself breaking even selling the Leaf battery replacements.