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Old 01-14-2007, 02:12 PM
GaryG GaryG is online now
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Real Name: Gary Gattis
Location: Jupiter, FL
Hybrids: 05 FWD FEH, '09 FWD FEHL
Posts: 1,245
Default Re: Cold weather causes brake failure???

Quote:
Originally Posted by TeeSter View Post
I drive in "L" quite a bit and I can also say that at 20F or so the regen is still active and it feels fine. They may have a patent and have decided it wasn't useful and not included the work on the FEH.
Hi Tim

It may be a good idea that you read what Willard may be reading. It's not an on and off situation, so I think disabled is not a good term for Willard to use. Maps are used for different situations and temps. An ABS event can disable regen for obvious reasons.


Temperature compensated lift-throttle regenerative braking
The amount of regenerative braking that is applied to the wheels (105) of a vehicle (100) is based on ambient temperature and a lift-throttle event. An ambient temperature sensor (108) monitors the temperature around the vehicle. Based on the temperature, a map is selected (204, 212, 214). If a lift-throttle event occurs, then the map is applied (206, 208). Compression regenerative braking is reduced to zero if an anti-lock braking system event occurs or if the throttle is re-applied, or both (216, 218, 220, 222).

http://www.freepatentsonline.com/658...hlight=5343970

You and Andy are right IMO.

GaryG

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