1964 Chevrolet C-10 Deluxe on 2040-cars

Auto blog

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.

Reuss says GM diesel plans are still on pace

General Motors is not going to let Volkswagen's diesel emissions scandal ruin its plans for a new line of efficient, torquey oil-burners, the company's Executive Vice President Mark Reuss said at a recent press event. "No way," Reuss responded when asked about cancelling the upcoming diesel-powered Chevrolet Cruze and other vehicles. "The Cruze Diesel is too good not to do it." Slated for 2017, the compact is just the latest member of a diesel offensive that initially kicked off with the first Cruze Diesel and most recently saw the introduction of the oil-burning Chevy Colorado and GMC Canyon. Reuss also reassured those in attendance that there was "no delay" in development of Cadillac's diesel lineup. Cadillac is working on a line of four- and six-cylinder turbodiesels for Europe. They'd make their way into the US market, too, eventually. "It's a question of timing," Reuss said, according to Car and Driver. Volkswagen's diesel emissions scandal has caused automakers across the globe to at least reanalyze their diesel strategy. Jaguar Land Rover, which is preparing several diesel-powered models for the US market, went on record late last month to reaffirm its commitment to diesel. Related Video: Featured Gallery 2014 Chevrolet Cruze Turbo Diesel: Quick Spin View 14 Photos News Source: Car and DriverImage Credit: Copyright 2015 Seyth Miersma / AOL Green Cadillac Chevrolet GM Diesel Vehicles

Chevy Bolt to start at $37,500 before rebates

During the recent debut at the Consumer Electronics Show, Chevrolet only described the 2017 Bolt's cost as "affordable" without any further explanation. Now the company's promo site for the EV spilled the beans of the $37,500 price after destination. That means some buyers could get the five-door hatch for $30,000 after the $7,500 federal tax credit – at least as long as that lasts for the Bowtie brand. State incentives might also reduce the bill even more when the Bolt arrives in late 2016. Chevy wants the Bolt to be a mainstream and affordable vehicle that can attract a wide swath of buyers. The company estimates the five-door's range at over 200 miles, which should be plenty for most customers. The promo site also touts that the batteries can recharge in nine hours from the automaker's 240-volt home charger. Inside, buyers find a high-tech cabin with a customizable 10.2-inch infotainment screen and an 8-inch instrument display. To limit range anxiety, the vehicle's computers can take into account the way an owner drives, the weather, terrain, and more to calculate just how much distance remains from the batteries. The system also pushes people to be greener drivers through a game-like interface that offers rewards and rankings. If $37,500 or less for this five-door EV intrigues you, read our Quick Spin of a preproduction example from CES for a better idea of what the Bolt is really like. The powertrain's regenerative braking impressed us even over the short driving course, and the infotainment system seemed incredibly useful. Related Video: