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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.

Suppliers love Toyota and Honda: Why that matters to you

You might think that a survey of automotive suppliers and their relationship with OEMs is the automotive equivalent of nerd prom. In some ways that's what the North American Automotive OEM-Supplier Working Relations Index (WRI) is. The study, the 17th annual conducted by Planning Perspectives Inc., is based on input from 652 salespeople from 108 Tier One suppliers, or, PPI points out, 40 of the top 50 automotive suppliers in North America. Suppliers to General Motors, Ford, FCA, Toyota, Honda, and Nissan. But the results have consequences in terms of tens of millions of dollars for OEMs - and in the quality, technology, and cost of the next vehicle you buy. There are a couple of ways to look at the results of the WRI. One is, "So what else is new?" And the other is, "Damn! How did that happen?" The study looks at five relationship areas — OEM Supplier Relationship; OEM Communication; OEM Help; OEM Hindrance; Supplier Profit Opportunity — within six purchasing areas — Body-in-White; Chassis; Electrical/Electronics; Exterior; Interior; Powertrain. In the overall rankings, Toyota is on top for the 15 th time in 17 years, with a score of 328. Honda, the only company to best Toyota (in 2009 and 2010), comes in second, at 319. Those two companies, explains John Henke, president of PPI, have collaborative working arrangements with colleagues and suppliers alike built into the very fabric of their cultures. This, however, is not a situation where one can readily conclude it is about "Japanese companies," because the third company with headquarters on the island of Honshu, Nissan, came in dead last. This is the "How did that happen?" portion. The Nissan score of 203 puts it 125 points behind Toyota. There hasn't been a number that low since the then-Chrysler Corp. scored 187 in 2010, when the company was clawing its way out of the recession. Clearly, the suppliers don't feel particularly engaged by the buyers at Nissan. Henke explains that whether a company does well or not on the WRI is rather simple. All people do things based on what they're measured on. "If you're measured on taking 10% out of your annual buy, you immediately know how to do it. But if you're also measured on improving relations, suddenly there is a new dynamic as to what you can do to achieve both.

Recharge Wrap-up: BMW Next 100 video, how Nissan "tops off" battery

BMW explains the ideas behind its Vision Next 100 concept car that debuted at the Geneva Motor Show. As BMW celebrates its 100th birthday, it wants to look into the future rather than dwell on its past. This involves the digital and analog worlds working together "to create a seamless experience." Hence the "live geometry," wherein physical parts of the car move to translate digital information to the driver. The video also gets into the future of driving modes, like "Ease," for more autonomous driving, and "Boost," for when the driver wants to take control to enjoy some motoring the good, old-fashioned way. Check out the video above, and read more from Hybrid Cars. Nissan has managed to find a way to boost the range of EV batteries inspired by pouring a glass of beer. The automaker has found that after a full charge, one can wait a few minutes for subsequent "minicharges" to "top off" the battery. The voltage dips slightly, much as the foam does on a pint of beer, allowing the battery to accept some more juice. The result is an extra 0.7 percent of energy, which could mean just enough extra range to reach the next charging station. Read more from Automotive News. Hyundai has delivered its first Tucson Fuel Cell in Ontario, Canada. The lucky recipient is Joseph Cargnelli, Chief Technology Officer of Hydrogenics Corporation, a company based on hydrogen technology. The expansion into Ontario follows Hyundai's trial of six Tucson Fuel Cell vehicles in the Canadian province of British Columbia. Read more at Green Car Congress. Toyota has entered a public-private partnership to test an end-to-end hydrogen supply chain in Japan. The collaboration with the Kanagawa Prefectural Government, the municipal governments of the cities of Yokohama and Kawasaki and three private companies to create renewable hydrogen to power forklifts. It will use wind energy to electrolyze hydrogen, which will then be shipped to a factory, a vegetable and fruit market and two warehouses to be used in the fuel cell-powered vehicles. This supply chain is expected to reduce CO2 emissions by 80 percent compared to traditionally fueled forklifts. Read more from Toyota. Related Gallery BMW Vision Next 100 Concept News Source: Hybrid Cars, YouTube: BMW, Automotive News, Green Car Congress, Toyota Green BMW Hyundai Nissan Toyota Concept Cars Electric Hydrogen Cars Videos recharge wrapup