Design Con 2015
Breaking News
Comments
Newest First | Oldest First | Threaded View
<<   <   Page 2 / 3   >   >>
rick merritt
User Rank
Author
Re: Musk's claim is baseless
rick merritt   10/8/2013 12:44:02 AM
NO RATINGS
@Caleb: Great reporting!

I assume the video of the burning Tesla was AFTER the fire department puctured the firewall. Is that right?

Agreed that the realtive saftey of the Tesla is very high and should not spawn a frenzy of EV fears. That said, this is a marketing nightmare and could undermine the company and set back the EV market.

A viral video of a flaming car is so much more powerful than 300 words explaining the technical reality of what happened and the relative saftey of EVs and gasoline engine cars.

daleste
User Rank
CEO
Re: Musk's claim is baseless
daleste   10/7/2013 11:18:24 PM
NO RATINGS
It is an impressive fire, but I have seen gasoline cars burn like that too.  The numbers do indicate fires happening more often in gasoline vehicles, but I don't think they have enough data yet to prove that batteries are safer for fire danger.

GMF
User Rank
Apprentice
Re: Musk's claim is baseless
GMF   10/7/2013 7:24:07 PM
NO RATINGS
 

Re: Musk's claim is baseless
Caleb, You're right. I did some search about fuel tank safety regulations. Only thing I found is FMCSA393.67 which didn't prohbit bottom mount, not even for gastank mounted after real axle. Only impact related test is 30 feet drop test. Maybe the time to adding bottom impact test for gasoline cars and EV/HEV.

http://www.fmcsa.dot.gov/rules-regulations/administration/fmcsr/fmcsrruletext.aspx?reg=393.67
http://www.autosafetyexpert.com/defect_fueltank.php?pagetitle=FUEL%20TANK%20-%20FIRE

Frank Eory
User Rank
CEO
Re: Musk's claim is baseless
Frank Eory   10/7/2013 6:32:53 PM
NO RATINGS
The undercarriage has armor plating, there are firewalls between battery modules and between the undercarriage and the passenger compartment, and still a foreign object impaled one or more of the batteries, causing a fire. Even without hard data to compare to gasoline combustion engine vehicle fires, that certainly sounds like an outlier incident to me. It is also important to note that the driver was warned to exit the vehicle and escaped uninjured. You don't get that advance warning with a punctured gasoline tank.

Caleb Kraft
User Rank
Blogger
Re: Musk's claim is baseless
Caleb Kraft   10/7/2013 4:58:29 PM
NO RATINGS
Many cars now(late 90s onward) mount the gas along the bottom of the car (my minivan is a good example). 

 

I think he was speculating about the fact that the tesla has additional armor and batteries to protect the passengers. That debris could have theoretically entered the cabin of a normal car. 

GMF
User Rank
Apprentice
Musk's claim is baseless
GMF   10/7/2013 4:56:09 PM
Musk claimed "...Had a conventional gasoline car encountered the same object on the highway, the result could have been far worse."

Should not be too hard for Musk to find out how many car fires caused by bottom impaction.
The fact is a conventional gasoline car has much less chance to catch fire in the same situation as Tesla, although the fire could be much worse in case it did start. First, a gas tank in a car is far away from ground, comparing to Tesla's bottom mounted battery pack. Secondary, the bottom area of gas tank is much smaller than Tesla's battery pack.



Bert22306
User Rank
CEO
Regular cars also catch on fire, from time to time
Bert22306   10/7/2013 4:47:02 PM
NO RATINGS
Hasn't anyone ever seen a vehicle fire?

Lithium batteries sure are getting a bad rap, of late. PCs, airplanes, cars, anything more? I'd like to know what kind of debris this Tesla ran over, specifically, and then compare what it might have done to a gasoline tank. Too much vague generality tends to make me skeptical.

Anyway, to continue my mantra, battery powered EVs seem unimaginative and apologetic, at best. It's time to get better EVs out there.

polylith
User Rank
Rookie
Re: how 'bout the batteries
polylith   10/7/2013 4:18:08 PM
NO RATINGS
If you take the statements are face value, that Tesla battery fires are 5 times less likely and have 1% the combustion energy of gasoline fires, isn't the car's battery safe enough as is?

PocketBrain
User Rank
Rookie
how 'bout the batteries
PocketBrain   10/7/2013 4:07:45 PM
NO RATINGS
I wonder what is the barrier against using a safer battery type.  Cost?  Energy density?  Search the youtubes for nail-puncture videos of standard Lithium Ion cells and A123 Systems' batteries and you'll have a good comparison..

krisi
User Rank
CEO
Re: really?
krisi   10/7/2013 3:52:47 PM
NO RATINGS
LOL Max

<<   <   Page 2 / 3   >   >>


Top Comments of the Week
Flash Poll
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Carlos Bueno

Adventures in Userland
Carlos Bueno
Post a comment
Editor’s Note: Excerpted from Lauren Ipsum: A story about computer science and other improbable things, author Carlos Bueno introduces us to Lauren and her adventures in ...

Max Maxfield

Tired Old iPad 2 vs. Shiny New iPad Air 2
Max Maxfield
9 comments
I remember when the first iPad came out deep in the mists of time we used to call 2010. Actually, that's only four years ago, but it seems like a lifetime away -- I mean; can you remember ...

Martin Rowe

Make This Engineering Museum a Reality
Martin Rowe
Post a comment
Vincent Valentine is a man on a mission. He wants to make the first house to ever have a telephone into a telephone museum. Without help, it may not happen.

Rich Quinnell

Making the Grade in Industrial Design
Rich Quinnell
16 comments
As every developer knows, there are the paper specifications for a product design, and then there are the real requirements. The paper specs are dry, bland, and rigidly numeric, making ...

Special Video Section
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...
General-purpose DACs have applications in instrumentation, ...
Linear Technology demonstrates its latest measurement ...
10:29
Demos from Maxim Integrated at Electronica 2014 show ...
Bosch CEO Stefan Finkbeiner shows off latest combo and ...
STMicroelectronics demoed this simple gesture control ...
Keysight shows you what signals lurk in real-time at 510MHz ...
TE Connectivity's clear-plastic, full-size model car shows ...
Why culture makes Linear Tech a winner.
Recently formed Architects of Modern Power consortium ...
Specially modified Corvette C7 Stingray responds to ex Indy ...
Avago’s ACPL-K30T is the first solid-state driver qualified ...
NXP launches its line of multi-gate, multifunction, ...
Doug Bailey, VP of marketing at Power Integrations, gives a ...
See how to ease software bring-up with DesignWare IP ...
DesignWare IP Prototyping Kits enable fast software ...
This video explores the LT3086, a new member of our LDO+ ...
In today’s modern electronic systems, the need for power ...