I wonder how much of the braking for the prius is base upon the
regenerative system and how much is based on the REAL brakes... And
when the real brakes are triggered vs the regenerative system.
Also, with a prius, you have the gasoline engine and the electric
motor to work with (against)...
I wonder how a car with a keyless start system would respond to
someone chucking the keyless fob out o the window while driving... You
would think that the car should shut down since the authorization
token was no longer present...
--
John W Reames
jwrea...@comcast.net
Home: +14106646986
Mobile: +14437915905
On Mar 13, 2010, at 0:34, "Jerry Herrman" <jer...@san.rr.com> wrote:
With your collective indulgence, I'd like to re-open the discussion
of the topic "sudden acceleration". You may recall in mid february
I opened the discussion with this submission in vol. 51 issue 39, or
thereabouts:
( " So yesterday I heard what I believe was a public service
announcement (by some automotive engineer, I think) on the radio
saying that the least powerful brakes are going to easily overpower
the most powerful engine.This suggests that applying your brakes
firmly in an unexpected acceleration situation would prevent a
catastrophe.")
Responses from subscribers to this forum suggested that applying the
brakes firmly and immediately to stop the car would be successful,
regardless of the power output of the engine. Applying the brakes to
merely slow down the vehicle, most concluded, would likely result in
overheating the brakes to the point that they could be ineffective.
The recent report of a Prius driver's scary struggle with sudden
unexpected acceleration raises this topic again.
I am taking no position on this issue. I am asking questions to
better understand what is happening.
Here are several questions that circulate through my mind.
If a driver were to experience this phenomenon in a powerful car
whose speed has gone well above 100 mph, would there be any hope of
stopping the car using only the brakes?
Can a Prius whose driver is trying to brake the car continue to
accelerate? How powerful is the Prius engine?
Can all cars be shifted easily into neutral in the event of this
emergency?
Is there any "down side" to turning off the engine in this situation?
Having driven a 240D for many years, sudden acceleration sounded
rather attractive . Now, not so much.
Jerry
1982 240D 60+ horsepower
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