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Infiniti's variable compression engine in the 2019 QX50 is the first of its kind

The world's first variable compression ratio engine is here, in a production car. That car is the 2019 Infiniti QX50, debuting this week at the Los Angeles Auto Show. The midsize crossover has seen a refresh that has brought it an all-new platform together with new driver assist features, but it's the engine that's the centerpiece here. Nearly everything is continuously variable under the hood of the QX50 – not only the new shift-by-wire XTRONIC CVT. The new VC-Turbo gasoline engine is able to change its compression ratio from 8:1 to 14:1, or anything in between depending of the driving situation; whether there is need for top-end power or turbodiesel-like torque from low revs, or optimized fuel economy. The pistons' reach is continuously adjusted by an electric "Harmonic Drive" motor, which controls a multi-link system, affecting the top-dead-center of the pistons and changing the compression. The engine can also switch between efficiency-maximizing Atkinson cycle and regular combustion cycle, on the go – and there's both multipoint injection and gasoline direct injection employed. The result is 268 horsepower at 5,600 rpm and 280 pound-feet of torque at 4,400 rpm; good figures for a 2.0-liter four-cylinder gasoline engine with a single-scroll turbocharger. Infiniti says that the FWD version's fuel economy of 27 miles per gallon combined is 35-percent better than the previous-generation V6 engine; in AWD guise, it reaches 26 mpg, which is a 30-percent improvement. The new engine is pretty much all-aluminum, but the vaguely magical-sounding "transformative multi-link components" behind the variable compression system are made from high-carbon steel alloy. The engine's multi-link system also enables it to do away with any balancing shafts, and Infiniti compares its smoothness to a V6 rather than a regular four-cylinder. In addition to the aforementioned tech, the VC-Turbo engine has the world's first active engine mount vibration damping system to smoothen its operation even further. Related Video:

Infiniti will reinvent its models, tech and design language as part of reboot

Infiniti raised more than a few eyebrows when it announced plans to follow a strategy it described as Nissan-Plus. Although this term suggests the brand's image will be dangerously watered down, its chief executive stressed its flag will remain firmly planted in the luxury car segment as he outlined what to expect in the coming years. The executive team led by Infiniti boss Peyman Kargar will reboot the company with a focus on profitability. "Premium brands should bring more money to the company, so that's the objective. We are not at the level we want to be," he told Automotive News. Several new products are on their way, including a crossover with a fastback-like roofline named QX55, and Kargar clarified many future models will ride on an architecture shared with parent company Nissan. It will be compatible with gasoline-powered, hybrid and electric drivetrains. He explained sharing platforms and components is necessary to save money because the company, like its peers and rivals, is spending a small fortune on developing electrified, autonomous, and connected technology. The shift will likely spell the end of the driver-friendly rear-wheel drive platform found under the Q50 and the Q60, but don't expect Infiniti to put its emblem on, say, a Sentra, and call it a day. It will remain a luxury brand. "The objective is to use these assets of the company, and then to reinject the money we are saving into the luxury experience and ingredients of Infiniti. We will put more money into Infiniti's future, but this money will come from the savings in globalized platforms," Kargar explained. The strategy he's outlining is one many of the firm's competitors have already adopted. Lexus, Acura, and Audi all build cars using parts sourced from their respective parent company. Lamborghini's Urus is related to the Volkswagen Touareg under the sheetmetal. Kargar noted every upcoming new model will be defined by an overhauled design language. We don't know if recent concept cars (like the QX Inspiration introduced in Detroit in 2019; pictured) will influence its upcoming vehicles. However, its future cars will offer nicer interiors, more user-friendly infotainment systems, and they'll receive tech features before Nissan's variants get them, which, oddly, hasn't always been the case in recent years. Infiniti's turn-around will start in 2020, when the aforementioned QX55 makes its debut after a brief delay.

Infiniti Q50 BTCC ready to race

A few months ago, Infiniti announced it would field its Q50 sedan (or a racing derivative thereof) in the British Touring Car Championship, and now the Japanese automaker has revealed the tin-top racer in its final form as it prepares to roll onto the grid. Like the rest of the BTCC field, the Q50 racer is based on the series Next Generation Touring Car (NGTC) regulations. That means it's based on the production model, and not on a control chassis (like the one you'd find in NASCAR) done up to look like the showroom version. It also means a 2.0-liter turbocharged engine driving upwards of 300 horsepower through an Xtrac six-speed sequential gearbox with AP Racing clutch, throttle by wire and the manufacturer's choice of front- or rear-wheel drive, the latter of which we assume Infiniti has chosen for its touring car. Two examples of the Q50 BTCC will be fielded by Infiniti Support Our Paras Racing, a non-profit venture with proceeds (assuming there are any) going towards the British paratroopers' charity. The team is being run by Derek Palmer Sr, whose son Derek Jr will drive one, with the other piloted by Richard Hawken, and injured paratroopers filling out the pit crew and support staff. The Infiniti Q50 BTCC will be showcased on the Dunlop stand at the Autosport International show in Birmingham this weekend. NEW Q50 BTCC LIVERY AT AUTOSPORT INTERNATIONAL SHOW Wednesday, 7 January 2015 The recently announced 'Infiniti Support Our Paras Racing' team, which will contest the Dunlop British Touring Car Championship this season, will unveil a new livery for its two NGTC Infiniti Q50 race cars at the Autosport International Show in Birmingham later this week. The new livery on the Q50, being displayed on the Dunlop stand, has been designed by Infiniti's own design team in Paddington London, further enhancing the ongoing partnership of Infiniti with the Mallory Park-based team, which will employ injured ex-Paratroopers to prepare both race cars. Simon Cox, Infiniti Design Director from Infiniti Design London, said "The new Q50 race car livery was developed to contrast against the traditional branding schemes normally associated with the BTCC grid. However, it still retains a high level of visibility, reflecting both the dynamic qualities of the Infiniti Brand along with the performance and striking contours of the Q50 road car.