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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: Elio TV ads, Waivecar free EV carsharing

Waivecar is a new carsharing service that allows users two free hours of EV driving. The rentals are paid for with advertising, and each Chevrolet Spark EV in the fleet has an ad board affixed to its roof. So, while the driver enjoys free use of the car, the organizations buying the ads get exposure wherever the user goes. Drivers pay $5.99 per hour past the first two free hours of use. The company is undergoing a three-month trial in Venice Beach and Santa Monica before considering possible expansion. "We're giving to the lower-income people that need cars," says Waivecar CEO Isaac Deutsch. Read more at Green Car Reports. Volkswagen CEO Matthias Mueller is calling for a reworking of European emissions testing. He feels it is time to adapt the tests so that lab results more closely reflect those of real-world driving. "The industrywide discrepancies between official test results and actual usage is no longer tolerable," says Mueller. "We, the industry, need to take a new path." He also says he will make VW more environmentally friendly, and that the automaker plans to roll out 20 new electric vehicles by 2020. Additionally, Mueller is urging politicians to support the building of charging infrastructure. Read more at Bloomberg Business. Elio Motors has launched its first television ad campaign. The 30- and 60-second spots for the three-wheeled EV are titled "Own The Future," and will air on a variety of cable networks including ESPN, Fox News and National Geographic. "Our grassroots and digital efforts have helped create a strong – almost rabid – enthusiasm for our vehicle," says Elio Motors Founder and CEO Paul Elio. "As our funding situation continues to make progress, we are now in a position to share our message and create more fans through this national advertising campaign." Read more in the press release below. Elio Motors Continues Momentum with Launch of First National Television Advertising Campaign PHOENIX, Jan. 26, 2016 /PRNewswire/ -- Elio Motors (www.eliomotors.com) today announced it has launched its first national television advertising campaign to continue building consumer awareness for the company's three-wheeled vehicle that is expected to get up to 84 MPG and sell for a targeted base price of $6,800. The company, which anticipates production to launch in late 2016, has already gained an enthusiastic following through grass-roots events and digital marketing.

The Army goes off-roading with a hydrogen Chevy Colorado

The Chevrolet Colorado is joining the service. General Motors is working with the US Army Tank Automotive Research, Development & Engineering Center (TARDEC) to build a Colorado powered by a commercial hydrogen fuel cell stack, and the Army will use it in "extremes of daily military use for 12 months." TARDEC is the department that tests "advanced military automotive technology" and integrates them into ground systems. The aim is to see how well the benefits of a fuel cell vehicle can be adapted to the battlefield; hydrogen-powered vehicles are quiet, torquey, produce water, and can be used to provide electricity in the field. GM says the design sketch above "foreshadows" the Colorado that will go to boot camp and beyond, making it clear that this won't be the average midsize pickup. The press release below has more. Related Video: GM and U.S. Army to Demonstrate Extreme Off-Road Hydrogen Fuel Cell Chevrolet Colorado Agreement focused on proving unique utility and viability of fuel cell propulsion WARREN, Mich. 2015-11-19 – General Motors and the U.S. Army Tank Automotive Research, Development & Engineering Center (TARDEC) are modifying a Chevrolet Colorado midsize pickup truck to run on a commercial hydrogen fuel cell propulsion system and will expose the truck to the extremes of daily military use for 12 months. "Hydrogen fuel cell technology is important to GM's advanced propulsion portfolio, and this enables us to put our technology to the test in a vehicle that will face punishing military duty cycles," said Charlie Freese, executive director of GM's Global Fuel Cell Engineering activities. Fuel cell propulsion has very high low-end torque capability useful in off-road environments. It also offers exportable electric power and quiet operation, attractive characteristics to both commercial and military use. "The potential capabilities hydrogen fuel cell vehicles can bring to the Warfighter are extraordinary, and our engineers and scientists are excited about the opportunity to exercise the limits of this demonstrator," said TARDEC Director Paul Rogers. "FCVs are very quiet vehicles, which scouts, special operators and other specialties place a premium," he said. "What's more, fuel cells generate water as a by-product, something extremely valuable in austere environments." GM and TARDEC have fuel cell development and research facilities located 20 minutes apart in Pontiac and Warren, Mich.