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Infiniti SUV recall marks latest chapter in Takata airbag saga

Automotive parts maker Takata is having a rough year with millions of vehicles equipped with its airbag inflators being recalled. However, it looks like there might still be problems with the company's quality control, if a new recall by Infiniti is any indication.
The Japanese luxury brand is recalling 1,912 total units of the 2013 Infiniti QX56 and 2014 QX80 in North America because of a manufacturing flaw with their Takata-supplied inflators for the driver's side front airbag. Of those, 1,848 are in the United States, according to the National Highway Traffic Safety Administration. Specifically, the outer baffle could be the wrong component and cause too much pressure to build up inside. According to documents submitted to NHTSA, it's possible in a crash for the part to rupture spraying metal shrapnel at occupants. At this time, Infiniti has not had any reports of this actually happening to drivers.
While this problem sounds nearly identical to the issue affecting millions of earlier vehicles, it must be noted that this is a different fault. According to the notice being sent to dealers on NHTSA's website: "This particular Voluntary Safety Recall Campaign is unrelated to two earlier campaigns that involved Takata passenger front air bag inflators on some older model Infiniti vehicles. This issue involves a much newer inflator and is a different, more isolated, Takata quality control issue."

Infiniti's new VC-T changes the rules of small turbocharged engines

The upcoming Infiniti QX50 crossover does not get our pulse racing, no matter how shapely the QX Sport Inspiration concept that previews it may be. No midsize SUV does, to be fair. But it has something special under the hood – the world's first production variable-compression-ratio engine. That means the QX50's 2.0-liter turbo four, which makes 268 horsepower and 288 pound-feet of torque, will have up to 27 percent better fuel economy. Here's how it works. The trend of moving to smaller, turbocharged engines carries with it one big falsehood. Under low load when the turbo isn't needed, these engines are less efficient than an equivalent engine without a turbo because of the low compression ratio the turbo requires. That is, if you never need the extra power, you're wasting fuel. Turbocharged (and supercharged) engines use a lower compression ratio to prevent detonation. When you force extra air in a cylinder and mix it with fuel, it's more likely to prematurely go boom. Lowering the compression ratio prevents this problem, but it's less efficient. Infiniti's VC-T promises the best of both worlds, with a compression ratio that ranges from 8.0:1 for high-power turbo needs to a 14.0:1 ratio for fuel-sipping efficiency. At its heart the VC-T engine is a simple idea, but it's complicated to explain. Consider yourself warned. The photo below from Infiniti serves as a good visual overview. For the truly nerdy, this patent application covers the mechanical concept. Instead of having the pistons connected to the crankshaft, Infiniti's engine has a pivot arm with a connection on each end. One end connects to the piston, the other connects to a second lower shaft, which is controlled by an actuator arm. At any given time the engine's pistons move up and down according to the lobes on the crankshaft. But the actuator arm can change the angle of the pivot arm up and down. That is, the pistons still move in the same motion with the same stroke, but phase the entire stroke up or down. Move the pivot up and there's less room at the top, which means a higher compression ratio. Move the pivot down and the compression ratio goes down, too. As an added bonus, the lower shaft eliminates the need for counter-rotating balance shafts. Infiniti says this system works constantly and can vary the compression ratio to any number between 8:1 and 14:1. It also uses electronic variable valve timing on the intake valves to switch into Atkinson-cycle combustion for greater efficiency.

Infiniti shows off the new Q50 engine lineup in Chicago

Infiniti has a raft of engine options it's rolling out on the Q50 sedan. We found out about most of them a couple of months ago, but they're now confirmed in all their turbocharged glory. And they'll all be showcased this week at the Chicago Auto Show. The base engine is a 2.0-liter turbo four based on a Mercedes design and built at the new joint-venture engine plant in Tennessee. The engine produces 208 horsepower and 258 pound-feet of torque and will be available in the Q50 2.0t in either rear- or all-wheel drive. If those specs strike you as familiar, they're the same that you'd find in the Mercedes CLA250 and GLA250, both of which similarly make their 4Matic traction optional, but come standard in front- (not rear-) drive form. Above the four-pot sits a new 3.0-liter twin-turbo V6 that replaces the naturally aspirated 3.7-liter unit and will be available in two states of tune. The 3.0t model offers 300 hp and 295 lb-ft, but the performance model – dubbed Q50 Red Sport 400 – cranks it up to 400 hp and 350 lb-ft. Both versions come mated to a seven-speed automatic transmission and either rear- or all-wheel drive. The fourth powertrain options carries over in the form of the Q50 Hybrid, which still pairs a naturally aspirated 3.5-liter V6 to a 50-kW electric motor for a combined output of 360 hp. So if you like your sports sedan to come with some manner of assist, the Q50 offers plenty of choices. But if you're in the atmospheric camp, we're afraid you'll have to look elsewhere. Related Video: Infiniti Presents Three New Q50 Sports Sedan Engines for the First Time at the 2016 Chicago Auto Show - Q50 Red Sport 400 offers new 400-horsepower VR-series 3.0-liter V6 twin turbo engine - Advanced 300-horsepower VR V6 twin-turbo version shown for the first time in Chicago - Pair of new V6 twin turbo engines joined by new 2.0-liter turbo inline-4 rated at 208 horsepower CHICAGO (Feb. 11, 2016) – Infiniti today revealed the full lineup of new advanced engines for its Infiniti Q50 sports sedan at the 2016 Chicago Auto, including two 3.0-liter V6 twin turbo engines and a 2.0-liter 4-cylinder turbo engine. The trifecta of new powerplants will be available beginning this spring. Joining the three new engine-equipped Q50 models – designated the Q50 2.0t, Q50 3.0t and Q50 Red Sport 400 – on display at the country's oldest and best-attended auto show are the redesigned 2016 QX60 crossover and the all-new QX30 premium active crossover.