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Re: [OM] OT: Auto boxes, was A rental car for Scotland

Subject: Re: [OM] OT: Auto boxes, was A rental car for Scotland
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
Date: Sun, 31 Mar 2013 16:41:56 -0400
Yes, of course.  I should have thought of that.  All of my cars for the 
past 14 years have had anti-lock braking and/or stability control by 
braking individual wheels.  Obviously the hardware is already there.

Chuck Norcutt (back to sleep now)

On 3/31/2013 9:20 AM, Chris Barker wrote:
> I suspect, Chuck, that the mechanisms were already present as part of
> the system to improve stability.  Most German manufacturers have for
> a while now had braking to individual wheels, as I understand it, to
> improve control in cornering under adverse conditions.  If that were
> the case, adding braking for the cruise control would have cost
> little in weight or complexity.
>
> I'll have a look for the video.
>
> Chris
>
> On 31 Mar 2013, at 13:58, Chuck Norcutt
> <chucknorcutt@xxxxxxxxxxxxxxxx> wrote:
>
>> An interesting but relatively expensive manufacturing choice.
>> Slowing using braking requires additional hardware in the form of
>> some device to actuate the master cylinder other than your foot.
>> Slowing using the transmission to downshift and employ engine
>> braking requires nothing but a small bit of firmware to employ the
>> hardware and other controls that are already there.
>>
>> I didn't know anything about BMW's regenerative braking so looked
>> it up and found a video.  It operates by tying the alternator to
>> the drive train but the video is a bit sparse on the mechanics of
>> the connection.
>
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