Seams Tummy Eye Dew Recall.....

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Seams Tummy Eye Dew Recall.....

Post by Rope-Pusher » Fri Dec 20, 2013 8:23 pm

Q50 STEER-BY-WIRE RECALLED
From Autoline Daily:
"We’ve told you all a lot about the Infiniti Q50’s steer-by-wire system. But like most new technology there’s usually some glitches that need to be fixed once it’s out in the real world. That’s why the company is recalling Q50’s with the system. In freezing weather the power steering software may disable the steer-by-wire system and also may delay the engagement of the mechanical steering backup system. The recall involves very few cars, but Infiniti is telling customers not to drive their Q50’s until it’s fixed, and to have it towed to the nearest dealer to receive a software update."

http://www-odi.nhtsa.dot.gov/owners/Sea ... refurl=rss

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Re: Seams Tummy Eye Dew Recall.....

Post by ClutchFork » Sat Dec 21, 2013 2:31 am

In freezing weather the power steering software may disable the steer-by-wire system and also may delay the engagement of the mechanical steering backup system.
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Re: Seams Tummy Eye Dew Recall.....

Post by Rope-Pusher » Thu May 15, 2014 9:55 pm

GM recalls 2.7 million U.S. vehicles for issues including brake lights, brakes, wipers



19,225 Cadillac CTS models from the 2013-14 model years for the possibility of the windshield wipers not working "after a vehicle jump start with wipers active and restricted, such as by ice and snow." GM said lack of visibility from inoperable wipers could lead to a crash, but it is unaware of related crashes or injuries.

http://www.autonews.com/article/2014051 ... 9274467E4R#
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Re: Seams Tummy Eye Dew Recall.....

Post by noob5,000,000 » Fri May 16, 2014 12:58 am

Yet another reason I love my car from 1986. Manual rack and pinion. :mrgreen:
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Re: Seams Tummy Eye Dew Recall.....

Post by tankinbeans » Fri May 16, 2014 9:18 am

I'm sure there are potential benefits to having this steer-by-wire, but I can't imagine what they might be. Can somebody explain what the point would be?

I can understand, sort of, the reasoning behind throttle-by-wire. However, steer-by-wire and, if there is such a thing, brake-by-wire seem like so much automotive tinsel that doesn't really add to the safety of the car and might diminish it.

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Re: Seams Tummy Eye Dew Recall.....

Post by tankinbeans » Fri May 16, 2014 9:20 am

noob5,000,000 wrote:Yet another reason I love my car from 1986. Manual rack and pinion. :mrgreen:
I have electric assist power steering, but I don't think it's steer-by-wire. It feels good though.
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Re: Seams Tummy Eye Dew Recall.....

Post by theholycow » Fri May 16, 2014 10:13 am

Electric power steering is great. It makes so much more sense than hydraulic at a conceptual level, besides being better at everything and having more features.

Steer by wire, now that's kinda scary. That's one of those systems that should always have a more direct physical connection. There's no redundant system you could engage if the steering fails (apparently the failing system is capable of preventing engagement of the mechanical backup), and the classic mechanical linkage is pretty robust and foolproof. I don't want to be on the road with improperly maintained aging SBW vehicles, nor brand new ones that could still have bugs like the Q50 did.

But what advantages does it have? I imagine packaging, for one; no longer do you need a linkage cutting through the engine bay. Then there's preparation and maturation of the technology to be used in autonomous cars that won't have a human-drive mode. It probably makes self-parallel-parking technology better, and stability control (imagine if it doesn't have to fight with a panicking driver for the steering wheel).
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Re: Seams Tummy Eye Dew Recall.....

Post by six » Fri May 16, 2014 12:06 pm

In order for steer/throttle/brake (the three most important systems for control of a car) being "by-wire" to work as well as fully mechanical systems, there has to be multiple redundant systems to backup the main system, and a backup for the backup, and a backup to that, in addition to a fully mechanical and manual system, like in the Space Shuttle, and airliners. And then there's the issue of giving the computer too much "power" over the user. If the user wants to steer left, and turns the wheel/stick/etc. to the left, the computer should not steer to the right, or stay straight, because the computer "thinks" that is the best course of action.
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Re: Seams Tummy Eye Dew Recall.....

Post by Rope-Pusher » Fri May 16, 2014 8:07 pm

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Steer by wire offers improved safety because it virtually (HAH) eliminates the possibility of the steering column being driven backward, toward the driver's chest, during a frontal impact.
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Re: Seams Tummy Eye Dew Recall.....

Post by IMBoring25 » Sat May 17, 2014 12:31 am

If the steer-by-wire causes subject frontal collision, however, that argument is moo(t).

Are they running this through the CAN bus?

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Re: Seams Tummy Eye Dew Recall.....

Post by potownrob » Sat May 17, 2014 2:02 am

epic fail :evil:
FÜR DIE FAHGLEITZ!! :shock:

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Re: Seams Tummy Eye Dew Recall.....

Post by six » Sat May 17, 2014 4:14 am

How do you transmit road feel to a virtual, essentially, steering wheel? Force feedback??? Like an arcade game? Lol
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Re: Seams Tummy Eye Dew Recall.....

Post by theholycow » Sat May 17, 2014 6:49 am

Rope-Pusher wrote:Steer by wire offers improved safety because it virtually (HAH) eliminates the possibility of the steering column being driven backward, toward the driver's chest, during a frontal impact.
I thought collapsible steering columns fixed that.

I wonder if a flexible column, either some sort of cable that transmits torsion without flex or just a ton of U-joints in a solid shaft, would accomplish the same. You could say the ton of U-joints is rather complex, but then it's simple compared to SBW.
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Re: Seams Tummy Eye Dew Recall.....

Post by Rope-Pusher » Sat May 17, 2014 8:51 am

theholycow wrote:
Rope-Pusher wrote:Steer by wire offers improved safety because it virtually (HAH) eliminates the possibility of the steering column being driven backward, toward the driver's chest, during a frontal impact.
I thought collapsible steering columns fixed that.

I wonder if a flexible column, either some sort of cable that transmits torsion without flex or just a ton of U-joints in a solid shaft, would accomplish the same. You could say the ton of U-joints is rather complex, but then it's simple compared to SBW.
But that wouldn't require 10 years of research and then you wouldn't have all this:

"Infiniti’s Direct Adaptive Steering technology– and the Infiniti Q50 itself – are really representative of the future of driving," said Michael Bartsch, vice-president, Infiniti Americas. "It is more precise, quicker, less tiring, easier to keep the vehicle in the center of the lane, and allows previously unattainable levels of driver personalization. Someday all vehicles will have steer-by-wire, today we are the only one."
In what the magazine praised as "one of the biggest steps yet" toward self-driving cars, the Popular Science editors wrote: "Because there's no physical link between the road and the steering wheel, drivers don't feel jarring bumps or vibrations, but the system does electrically simulate natural steering resistance. Computers vary steering ratio and power assist for easier low-speed maneuvers and high-speed stability. And in the event of total power loss, a clutch restores mechanical control to the driver — that is, until the human driver becomes obsolete."
While systems such as Direct Adaptive Steering™ will be critical in future autonomous vehicle designs, Infiniti Q50 owners are realizing a real benefit today in the system's ability to customize steering settings according the driver preference and road conditions. The system allows the driver to change both steering effort and the steering gear ratio."

In the event the clutch fails to restore mechanical control to the human driver, he will become "obsolete" rather quickly.
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Re: Seams Tummy Eye Dew Recall.....

Post by Rope-Pusher » Sat May 17, 2014 10:15 am

Juke Box Heroes?
"Nissan Motor Corp. will replace the timing chains in more than 104,000 Nissan Juke subcompacts from the 2011-13 model years sold in the United States and Canada as part of a voluntary service campaign.

The action covers 104,439 Jukes produced in Nissan’s plant in Oppama, Japan, the company said today."

http://www.autonews.com/article/2014051 ... ubcompacts
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