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Infiniti Q50 steer-by-wire system took 10 years to develop [w/video]

Infiniti's Direct Adaptive Steering (DAS) is quite a novelty - the system employs no physical connection between the steering wheel and the front wheels under normal circumstances and instead relies on a computer, clutch and steering-angle actuator to guide vehicles down the road with input from the driver.
In our First Drive review of a 2014 Infiniti Q50 equipped with the system, we weren't overly impressed by the artificial feedback. But we can't help but be impressed with how long Infiniti spent on its development: a full 10 years, according to Autoline Daily in the video report below. A staggering 70 percent of the research and development time spent on DAS was devoted to getting the steering feel right, and unfortunately, our first impression suggests their results still leave something to be desired, as we found it lacked the sporty feeling a sport sedan should have.
The weight of DAS is comparable to that of a conventional steering system due to its complexity. For example, three ECUs are used in the first-generation DAS system to ensure there's never a loss of steering, but Infiniti is refining the technology and is working to simplify it to reduce weight. One day Infiniti hopes that only one ECU will be needed to control DAS. We just hope it doesn't take the Japanese automaker another ten years to get the steering feel right.

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:

Nissan backing off IDx, BladeGlider and Infiniti Eau Rouge amid focus shift

Nissan and Infiniti are officially under the microscope after their presentations at the 2015 Detroit Auto Show focused on the new Titan pickup and Q60 Concept, but lacked any and all mention of allegedly production-bound examples of the Q50 Eau Rouge, IDx and BladeGlider EV concepts. Automotive News reports that the lack of info on the three concept cars, which had previously heralded a more performance-minded Nissan/Infiniti, has signaled a shift in priorities at the Japanese company. Instead of driver-oriented models, emphasis is seemingly being focused more on volume offerings. Nissan was subject to a pair of high-level executive departures last year, with both Andy Palmer and Johan de Nysschen departing for Aston Martin and Cadillac, respectively. Both execs were strong proponents of more driver-oriented offerings, with Palmer championing the compact, rear-drive IDx coupe and de Nysschen backing the high-performance Q50 Eau Rouge. While Palmer has been mum on his former employer's alleged move away from performance, de Nysschen made headlines last month after calling out a Nissan vice president in a Facebook post saying he "heard a rumor that Noboru Tateishi is going to cop-out and shelve the Eau Rouge project now that I'm not there to pressure him," while adding that the VP has "more enthusiasm for 'driver's aid's,' apparently, than 'driver's cars.'" AN reached out to Infiniti, with North American VP Michael Bartsch telling the publication that no decision had been reached about the Eau Rouge and that the company was more focused on rebuilding its core portfolio. Featured Gallery Nissan IDx Nismo View 34 Photos Related Gallery Infiniti Q50 Eau Rouge Concept View 24 Photos Related Gallery Nissan BladeGlider Concept View 22 Photos News Source: Automotive News - sub. req.Image Credit: Nissan, Infiniti Rumormill Infiniti Nissan Coupe Luxury Performance Sedan infiniti q50 infiniti q50 eau rouge nissan bladeglider concept