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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: EVSR returns to Mt. Washington, China Mulls $16 Billion For EV Charging

Foxconn and electric carmaker BAIC are partnering to provide an electric car rental service in China. Slated to kick off next month in Beijing, Hangzhou and Jiangsu province, the company, called Henyu, will offer the EV rentals by the hour. Henyu hopes to offer 5,000, to 10,000 electric rental cars within a year, and wants to become the largest EV rental group in China. The company will also deploy BAIC's E150EV to ten cities for rental outside of Beijing. Read more at Want China Times. Hoping to convince more people to make the switch to electric cars, China is considering investing $16 billion to install charging facilities. Anonymous sources have said that an announcement about the program will be made soon. China has already announced and implemented various measures, such as incentives and tax breaks, to encourage more people to drive emissions free and improve urban air quality. China aims to have 30 percent of its government vehicle purchases be EVs by 2016, with higher targets after that. There's more from Bloomberg. BMW is launching a campaign to highlight technology features from the i8 to be used in other BMW vehicles. Called BMW Innovations, the program will include television ads showing how the i8's full-color heads-up display, LED headlight technology and Surround View Camera System are making their way into cars such as the 3 Series, 5 Series and X3, respectively. BMW Innovations also includes digital and social media campaigns, as well as hands-on technology presentations at dealerships. See the new ads below, and learn more in the press release. EVSR is set to return to Mt. Washington for the Alternate Energy Summit. It is the team's first time back since EVSR set the electric vehicle record at the Climb to the Clouds hill climb earlier this year. EVSR will run the cars up the hill again, and it will hold a workshop about electric racing, called "Redefining Motorsports - A How-To Guide for Creating a Revolution in Speed." The Alternative Energy Summit takes place on September 13 and 14 as part of National Drive Electric Week, and is free to the public. Read more in the press release, below. BMW Debuts BMW Innovations Campaign Showcasing Key Technology Features. Woodcliff Lake, NJ – August 27, 2014... BMW of North America will introduce a new campaign, BMW Innovations, which will highlight how the range of BMW vehicles share several key technology features with the visionary BMW i8, a plug-in hybrid high-performance vehicle.

2014 BMW 328d ready to burn oil in just four cylinders

Despite showing off the new 328d sedan in New Jersey yesterday, BMW though it only fair to bring the first four-cylinder diesel it will ever sell in the US to the New York Auto Show today as well. Unfortunately, the company remains vague about pertinent details like fuel economy and price, but we did hear again that the oil-burner will be capable of getting 45 miles per gallon on the highway. BMW's Oliver Ganser told AutoblogGreen, "We do not want to give out" the city or combined mpg ratings quite yet, but The New York Times got someone to estimate a fuel economy of mid-30s in the city.
The two-liter TwinPower turbocharged and direct injected engine and eight-speed automatic transmission (sorry, no manual will be available) put out 180 horsepower and 280 pound-feet of torque and should get the 328d up to 60 miles per hour in just over seven seconds. As we noted earlier, the 328d will be available with every option and trim level - like all-wheel drive - that other 3 Series models have in the US (transmission excepted) and should start at under $40,000 when it goes on sale this fall.
Officially, the 328b will be able to accept biodiesel blends up to B5 (or, just maybe B7), which is standard diesel with five (seven) percent biofuel. Read more about that and other aspects of the 328d here.