Drive by wire (DBW)????

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Matt Ion wrote:


you forgot "old".

of course!!!

but /nobody/ has that. and nobody /will/ have that unless you want a car with autopilot. and that's not coming to public roads for a while yet.

most modern cars have that now.

mercedes had it [sbc - sensotronic brake control] but dropped it - customers didn't like it. they even retrofitted back to standard/abs brakes for cars that had been shipped with it.

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Uh,yeah,it is.

Meaning FLIGHT control("steering"),not engine control,since jet engines have used electronic control long before FBW was implemented.

It's changing THIS YEAR; http://www.theautochannel.com/news/2007/11/09/070164.html says Mazda will have it(electronic steering control) on one of their 2008 platforms
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Jim Yanik
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Jim Yanik wrote:

sorry dude, it's not. there are no cars that have that. not one. /all/ use direct mechanical linkage between the steering wheel and the front wheel knuckles. most have power assist. assist is not electronic control.

you could argue that about the rear of honda's 4ws they had on the prelude back in the 80's. but it's not the real deal. the fact remains, all these vehicles have direct mechanical linkage. in the even of system failure or shutdown, driver has direct mechanical control. that is not the case with any form of "fly by wire".
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Actually,jet engines have had electronic "throttle" control long before the term "fly-by-wire" came into use.The FBW term has been used for FLIGHT controls("steering" the AC),not engine control.
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Jim Yanik
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yes,and the L1011 gets constant maintenance and checks,and has triple redundancy in the flight controls.
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Jim Yanik
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Jim Yanik wrote:

Actually, the L1011 has four separate hydraulic systems.
You bet they're maintained. Such doesn't exist in the automotive world.
JT
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Hopefully, you have your answer but if not -
Drive by Wire typically refers to the electronic connection of the gas pedal to the engine - so when you push down on the pedal, it sends a signal to the engine control computer than you want to speed it. The control computer then uses a whole series of inputs to determine how to adjust the engine to meet your request. There isn't any mechanical connection to the engine from the gas pedal. This is noticeable, for example, when using cruise control - a DBW system won't cause the gas pedal to move as the engine speed changes to maintain the cruise setting. My Audi A4 has this feature.
Electric (or electronic) power steering simply replaces the hydraulic, engine-driven power steering pump with an electric pump that doesn't require being hooked to the engine. The steering is still a direct, mechanical connection, so that if the pump fails, you can still steer the car (albeit requiring much more force). I don't know that any cars currently made have a non-direct mechanical connection between the steering wheel and the front wheel, and would be VERY surprised to see that happen in the near future.
Dan D '07 Ody EX Central NJ USA
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wow, cheers guys, look like i started something there, didn't I? lol
Thanks again I now have a little more understanding :-)
Thinking of buying a used 2.2 Diesel and noticed this wording and never seen it mentioned before.
Does anyone have a 2.2 accord? Your comments on the vehicle i would appreciate....
thanks again by the way...
AE
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wrote:

Having the throttle controlled by an ECU (computer) driven Servo instead of by a mechanical cable link. Something that Honda does very well on the S2000 (which feels like a mechanical link and very natural) yet very horribly on my wife's '07 Si sedan (which hangs for about 1-1.5 seconds after letting off the throttle thus turning anyone who has a clue how to drive into a herky-jerky looking idiot... In this case it's worse than GM's skip shift and the service techs can't seem to find a way to reprogram it...)
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