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GM: Without LG Chem, we couldn't build Bolt EV [UPDATE]

It's absolutely no surprise that General Motors has a thing for LG Corp. The Detroit automaker and the Korean parts supplier have been working in public on electric vehicles ever since it was announced that LG Chem would supply the battery cells for the Chevy Volt in 2009. LG Chem was even named GM's 2010 Supplier of the Year. But, yesterday, the connection between the two companies was strengthened with the announcement that LG Electronics would be supplying a number of components for the upcoming Chevy Bolt electric vehicle. The Bolt is expected to be able to go about 200 miles and will carry a price tag of about $30,000 (after incentives) when it arrives in 2017 or so. LG's new components can be found almost everywhere in the Bolt. They include the battery pack and the battery heater, a new motor, the power inverter module, the electric climate control system compressor, the on-board charger, high-power distribution module, the accessory power module, and power line communication module. Oh, and then there are LG Electronics' advanced display technologies like the new instrument cluster and a new infotainment cluster. LG Electronics also supplies parts for the 4G LTE OnStar system, just like it does in other new Chevys. If that all sounds like a lot of components to you, you're right. Mark Reuss, GM executive vice president of global product development, purchasing and supply chain, said that without the expanded relationship with LG, GM would not be able to bring the Bolt to market (insert old ironic quote link here). "I think GM was lacking that [electrification knowledge] in a very complete way for many years, I'll just be frank about that," Reuss said. "I also think that on an electrified basis, this requires a long-term commitment and trust that sometimes is violated on a more short-term, regular, traditional basis. I think we have found something completely different with LG and I think that has become a widely talked about and duplicated want from our purchasing and corporate standpoint with our supply base." The "this" that Reuss is talking about here is the OEM-supplier relationship, something has evolved with the LG-GM situation. Previously, the automaker-supplier relationship used to be more like a dictator telling underlings what he needed, Reuss said, and that was a bad idea. "Today's competitive landscape requires a different approach, especially in electrified vehicles," he said.

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.

Chevy Corvette Stingray picks up another award, this time from Automobile

The new Chevrolet Corvette Stingray has picked up another buff book accolade after capturing Road and Track's Performance Car of the Year award. The seventh-generation of America's sports car (sorry Viper, Mustang, et al.) has been named Automobile Magazine's Automobile of the Year.
Automobile's award to the Corvette over competitors is the mirror image of its rival Motor Trend, which named the Cadillac CTS its car of the year over the C7. The CTS was, according to the Automobile team, the closest contender to the mighty Stingray. Great news all around for General Motors it seems.
As for what pushed the Corvette past its distant, four-door cousin, Automobile commended its excellent, 6.2-liter V8 calling the car's performance "simply awesome" while also remarking that it is easier to drive fast than ever before thanks to steering and chassis tweaks. Following a theme set by other publications, there were also plaudits for the interior, of all things, with the buff book complimenting the car's ergonomics and material quality, while also praising the standard seats.