HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
<<  <  Page 2/2
William K.
User Rank
Platinum
Start-Stop, and the required batteries
William K.   6/6/2013 9:26:48 AM
NO RATINGS
Golf carts are a very poor example of any aspect of EV or HEV technology.

But much of the restart energy for a real start-stop drive system could come from a large capacitor, since with a warmed up fuel injected engine extended cranking would never be needed. One cylinder and one compression stroke and it should be running. A new battery technology may be quite worthwhile, but really, a capacitor should be able to deliver enough power for normal restarting. Of course the entire concept could easily be ruined by the wrong control algorithm, which I anticipate the first generation will be a miserable failure because the control algorithm will be totally wrong. The other requirements for maximum saving will be to allow driver control plus free-wheeling coasting. The downside is that it will require the vehicle to have non-powered steering, since the loss of power assist will render most drivers unable to steer the vehicle. But power steering for a small, light vehicle is really a waste of energy and an excess mechanical feature that only adds weight and complexity.

TJ McDermott
User Rank
Blogger
Maybe multiple solutions are needed?
TJ McDermott   6/5/2013 11:06:57 PM
NO RATINGS
If one is to solve the energy demand problems in this country, no one solution will work.  The Pacific NW has plenty of hydro electric potential, but is a rotten place for solar.  The southwest is exactly the opposite.  Tidal energy in Kansas is just plain silly.

A blended approach is necessary, multiple solutions.  Might using two different types of batteries make a better solution for vehicles?  This custom lithium chemistry for start-stop, and more conventional for regular operation?

Charles Murray
User Rank
Blogger
Re: Start-stop batteries
Charles Murray   6/5/2013 6:53:17 PM
NO RATINGS
Good point, Gorksi. Although, admittedly, golf carts don't have to start internal combustion engines.

Gorski
User Rank
Platinum
Start-stop batteries
Gorski   6/5/2013 1:58:06 PM
NO RATINGS
The chemistry is beyond me but it sounds good. Why did the battery consortiom fork over millions of dollars for this technology. They could have gotten it much cheaper by going out and playing a round of golf in a golf cart. Golf carts have been stopping and starting for years.

<<  <  Page 2/2


Partner Zone
Latest Analysis
Take a peek into the world of a test engineer – and then tell us about yourself! We want to know what part each of our readers plays in the wonderful umbrella known as design engineering.
On Sunday, when more than a hundred million Americans turn on their televisions to watch the Super Bowl, they might consider first giving thanks to a polymer known as polybutadiene. .
Design News is pleased to present the finalists in the Design Tools - Hardware & Software category of our 2016 Golden Mousetrap Awards.
The series now can interface with a wider array of EtherNet/IP-compliant hardware across many industrial sectors, including factory automation systems, plastic injection molding apparatus, and materials-handling equipment.
Gadget freaks at the Pacific Design & Manufacturing Show in Anaheim next week are in for a special treat: a chance to participate in a slot car competition on the show floor.
More:Blogs|News
Design News Webinar Series
1/28/2016 11:00 a.m. California / 2:00 p.m. New York
12/8/2015 11:00 a.m. California / 2:00 p.m. New York
2/18/2016 11:00 AM PT | 2:00 PM ET
2/24/2016 11:00 AM PT | 2:00 PM ET
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Jan 11 - 15, Designing ARM Devices Using Segger Tools
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7 | 8 | 9


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 © 2016 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service