<<  <  Page 2/2
William K.
User Rank
Start-Stop, and the required batteries
William K.   6/6/2013 9:26:48 AM
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
Maybe multiple solutions are needed?
TJ McDermott   6/5/2013 11:06:57 PM
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
Re: Start-stop batteries
Charles Murray   6/5/2013 6:53:17 PM
Good point, Gorksi. Although, admittedly, golf carts don't have to start internal combustion engines.

User Rank
Start-stop batteries
Gorski   6/5/2013 1:58:06 PM
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
Governmental policies and mandates in Europe are leading the way in creating low-carbon manufacturing.
Digital healthcare devices and wearable electronic products need to be thoroughly tested, lest they live short, ignominious lives, an expert will tell attendees at UBM’s upcoming Designers of Things conference in San Jose, Calif.
Designers of electronic interfaces will need to be prepared to incorporate haptics in next generation products, an expert will tell attendees at the upcoming Designers of Things conference in San Jose, Calif.
According to a Randstad Engineering compilation of salary studies, engineering salaries are increasing beyond inflation, with employers paying to keep potential suitors away from their employees.
The company says it anticipates high-definition video for home security and other uses will be the next mature technology integrated into the IoT domain, hence the introduction of its MatrixCam devkit.
Design News Webinar Series
11/10/2015 11:00 a.m. California / 2:00 p.m. New York
10/29/2015 11:00 a.m. California / 2:00 p.m. New York
10/20/2015 8:00 a.m. California / 11:00 a.m. New York
12/2/2015 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.
Jul 6 - 10, Building Raspberry Pi Controllers with Python
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7

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