HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
<<  <  Page 2/2
sensor pro
User Rank
Gold
Re: BMW's Percussion disconnect for Z3
sensor pro   3/20/2012 12:12:34 PM
NO RATINGS
What would be the result of an accident if the dent is in the area of the bettery and the terminal shorts to some other part of the body of the car. ?

I'm not sure the relay will help.

TJ McDermott
User Rank
Blogger
Insulation too
TJ McDermott   3/20/2012 11:48:44 AM
NO RATINGS
The cables in question will be exposed to temperature extremes (0-100 F in ambient swing alone).  The insulation of these cables will have to stand up to that, as well as engine heat, and do so for a design life of a decade or more.  No cracking or degradation of the insulation will be acceptable.

trawickim
User Rank
Iron
BMW's Percussion disconnect for Z3
trawickim   3/20/2012 10:56:25 AM
NO RATINGS
The BMW 2000 Z3 already has the answer to post accident power removal  with percussion connector at positive battery post.

The unit is designed to fire and disconnect battery source upon deployment of airbag from accident.

Sehr gutes engineering von BMW!

 

Trawickim

 

Alexander Wolfe
User Rank
Blogger
Re: Greater potential shocks
Alexander Wolfe   3/20/2012 9:05:18 AM
NO RATINGS
Your imagination is correct, Rob. Even in non-accident situations, the use of higher voltages adds an additional layer of engineering, as Chuck points out, in the form of isolators. Supposedly, a high-voltage isolator fault was at issue in the recent Fisker Karma car which "died" when it was brought out to Consumer Reports's test track.

Rob Spiegel
User Rank
Blogger
Greater potential shocks
Rob Spiegel   3/20/2012 8:13:05 AM
NO RATINGS
I would imagine the high voltages would also come with higher potential safety problems. I would imagaine the higher voltages could be an issue in collisions.

<<  <  Page 2/2


Partner Zone
Latest Analysis
A Frost & Sullivan study finds that increased cyber attacks are prompting a flurry of innovative protection tools.
Devices and interconnected systems are finding a foothold not only in our homes but in mainstream organizations. Here are three tips to mitigate the risk.
What makes this movie stand out from the typical high school sports story is that the teenagers are undocumented immigrants, and the big game is a NASA-sponsored marine robotics competition. Like many other Hollywood movies, however, Spare Parts only tells part of the story. What the film shows -- and doesn’t show -- raises important issues affecting STEM education in the US.
Instead of sifting through huge amounts of technical data looking for answers to assembly problems, engineers can now benefit from 3M's new initiative -- 3M Assembly Solutions. The company has organized its wealth of adhesive and tape solutions into six typical application areas, making it easier to find the best products to solve their real-world assembly and bonding problems.
Load dump occurs when a discharged battery is disconnected while the alternator is generating current and other loads remain on the alternator circuit. If left alone, the electrical spikes and transients will be transmitted along the power line, leading to malfunctions in individual electronics/sensors or permanent damage to the vehicle’s electronic system. Bottom line: An uncontrolled load dump threatens the overall safety and reliability of the vehicle.
More:Blogs|News
Design News Webinar Series
2/25/2015 11:00 a.m. California / 2:00 p.m. New York
12/11/2014 8:00 a.m. California / 11:00 a.m. New York
12/10/2014 8:00 a.m. California / 11:00 a.m. New York
3/31/2015 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Mar 30 - Apr3, Getting Hands-On with Cypress’ PSoC
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  67


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2015 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service