Nissan's next-generation steering employs a steering angle sensor at the steering wheel, three ECUs for control, electric motors to power the rack, and a steering force actuator near the driver to retain the vehicle's "steering feel."
Today I drive a car with mechanical linkage and electric power boost (by chance, also a Nissan). Nissan propose to give me the same, with an extra sensor and wire to the steering mechanism. The electrical signal will be the primary mechanism, but so what? It doesn't replace the existing linkage. Its extra - extra weight, extra power, extra complexity. What happened to "keep it simple" ? Keeping the mechanical linkage in place as a backup is Nissans' way of saying "we like the new system - but we don't fully trust it"
I think the only down side is the number of automobiles on the road. The chances of the system failing are far greater than with cars. You cannot guarantee that the car is professionally maintained. However, if this system is fool proof, I mean that with masses in mind, then it is the future.
Right, Rob. For now, the clutch is there, but Nissan told us that if the mechanicals were ever removed, its engineers would incorporate a fail-safe sub-system. At this point however, it's not clear how the fail-safe sub-system would work.
Greg, the backup is absolutely required. While it is rare, I have been in a car where the power failed and the power steering stopped working. This was a hydralic system, and it was very hard to steer the car, but at least it could be done. Electrical systems are more likely to go out on a car, I would venture to guess, than the purely mechanical ones. Especially electrical systems that are digital.
General Motorsí glitzy public unveiling of the Bolt concept car this week shows commitment to the future of electric vehicle technology, but it also heaps pressure on its engineers to meet a challenging set of technical goals.
Toyota Motor Corp. made its case for a hydrogen future this week, rolling out the hydrogen-powered Mirai and saying that it will grant royalty-free use of thousands of fuel cell patents to competitors.
A bold, gold, open-air coupe may not be the ticket to automotive nirvana for every consumer, but Lexusí LF-C2 concept car certainly turned heads at the recent Los Angeles Auto Show. Whatís more, it may provide a glimpse of the luxury automakerís future.
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