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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.

ROEV lets you use multiple charging networks with one account

It may be a textbook case of a first-world problem, but any EV driver who doesn't want to carry two or three plug-in vehicle charging station cards when one would do is about to get a little smile on their face. This morning at the LA Auto Show, the new ROEV Association was announced that will let EV drivers carry just the one card. While you would think the all-caps ROEV stands for something, none of the pre-announcement materials nor the website explain it that way. Instead, it seems to just be a play on rove, which makes a lot of sense. There are three charging networks involved in ROEV: Blink, ChargePoint, and EVgo. Conveniently, these are the three largest in the US and have a combined 17,500 public chargers across the country. If you've got an account with one of these three networks, once ROEV goes into effect (expected in the spring of 2016), you'll be able to use that card at any participating charger without signing up for another account. Your personal details are kept private, ROEV says, and the companies coordinate behind the scenes to make it work. Pricing details were not disclosed. Besides the three main charging networks, two automakers are also founding members of ROEV: BMW and Nissan. ROEV says that Audi and Honda have also have already joined the Association and the organization wants to pull in all EV stakeholders to make electric vehicle charging easy. Fans of EV technology will note that ROEV has nothing to do with promoting either the CHAdeMO or the SAE Combo (CCS) fast charging standard. The Leaf is a CHAdeMO car while the i3 uses CCS, for example. The charging networks, of course, provide both kinds of plugs and don't promote one over the other. Tesla and its Supercharger network are not involved in ROEV, but Tesla drivers can, of course, participate in ROEV.

Recharge Wrap-up: BYD e6 taxi in Canoas, BMW wins award for second life battery project

BMW has won a 2015 Energy Storage North America (ESNA) Innovation Award for its second life battery project. The BMW i ChargeForward project takes batteries that have been retired from automotive duty, and puts them to work as stationary energy storage for a solar energy system. It also integrates BMW EVs into the grid, and uses software to manage charging based on grid load. "The goal of the BMW i ChargeForward project is to show how electric vehicles with smart charging capability and stationary second life applications of EV batteries can provide valuable flexibility that would make it possible for utilities to maximize the effectiveness of the existing electricity grid, which we expect to ultimately lower total cost of EV ownership for consumers," says BMW Advanced Technology Engineer of Sustainable Mobility, Dr. Simon Ellgas. Read more from BMW. Honda will add 120 EV chargers at the campus of its Torrance, California headquarters. Honda is also adding a DC fast charger adjacent to the campus that is accessible to the public. "Making workplace charging ubiquitous and accessible is the cornerstone of an effective public charging strategy that supports the maximum number of vehicles," says Honda's Environmental Business Development Office VP, Steven Center. "This expansion will make commuting in an EV a convenient option for the vast majority of Honda associates in Torrance, including those without access to charging at their homes or apartment buildings." Read more from Honda. The city of Canoas, Brazil has begun testing the BYD e6 electric taxi. The city will evaluate the EV taxi over a period of 60 days. "This may translate into vital savings for our survival," says Sergio Oliveira, President of the Taxi Driver Union in Canoas. "With today's high fuel prices, our operation is becoming unfeasible. This car's cost-benefit seems to be worth it. Now we need to get to know the car better by trying it out in the street, but so far we're quite pleased with what we've seen." The test of the electric taxi is part of a larger effort to electrify transport in Canoas. Read more in the press release below. Another Brazilian City Embraces a BYD Electrified Public Transportation Solution In a bid to offer its citizens a more economical and sustainable alternative in public transportation, the Brazilian city of Canoas has recently started testing the BYD e6 BEV as taxi.