HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Blogs
Blog

Internal Combustion Microengine Has a Twist

NO RATINGS
View Comments: Newest First|Oldest First|Threaded View
Charles Murray
User Rank
Blogger
Microns???
Charles Murray   4/23/2014 6:18:26 PM
NO RATINGS
100 microns X 100 microns X 5 microns??? Yikes! I realize this isn't a traditional IC engine, but the size is still mind-boggling. A few years agom, we wrote about the Conley Stinger engine, which had a 0.9-inch stroke. I thought that was small.

http://www.designnews.com/document.asp?doc_id=251002

 

William K.
User Rank
Platinum
Re: Efficiency
William K.   4/16/2014 10:32:36 PM
NO RATINGS
I also wonedr about the efficiency, and in addition, why anyone would consider salt water to be a fuel, since by definition a fuel delivers energy by a chemical reation, and is converted into a substance with less chemical potential energy. So if the salt water is recovered at the end of a cycle it did not release any chemical energy. So it could be called a working fluid but it should not be called a fuel. The input power is the electricity used to electrolyse the saltwater into whatever is produced and then re-combined. So really the invention is an electric motor, not a fuel consuming engine.

And one more question is about how useful work would be captured from this device, and would it still function if work were taken out.

Ratsky
User Rank
Platinum
Re: Efficiency
Ratsky   4/16/2014 10:33:33 AM
NO RATINGS
I agree, but would suggest that it be labeled with the common term "electric motor" since it is in fact turning electric energy into mechanical motion.  I guess that term wouldn't have as much success in gaining PR, though.

Ratsky
User Rank
Platinum
Saltwater???
Ratsky   4/16/2014 10:30:17 AM
NO RATINGS
If I recall my ancient electrochemical knowledge correctly, electrolysis of saltwater does NOT yield hydrogen and oxygen, but rather sodium hydroxide (lye) and gaseous chlorine.  This is the basis of the entire chloralkalai industry!  I'm not surprised they haven't figured out what really happens inside this tiny device, since they don't seem to understand this very basic (grade-school science in my day) fact.

AJ2X
User Rank
Silver
Re: Efficiency
AJ2X   4/16/2014 8:57:57 AM
NO RATINGS
This does not seem to be an internal combustion engine in the usually-accepted sense.  Rather, it appears to be an electric engine (since that's the only fuel consumed) in which it is conjectured that the working fluid, after disassociating, spontaneously combusts.  It doesn't seem to me that heat or heat efficiency enters into it at all.  It's an interesting little motor but not an internal combustion engine.

tekochip
User Rank
Platinum
Efficiency
tekochip   4/16/2014 8:03:44 AM
NO RATINGS
Sounds interesting.  So, the fuel is not consumed because the gas is reabsorbed?  What sort of efficiency do they see?


Partner Zone
More Blogs
Bigger than an iPhone 6 Plus, but smaller than an iPad Air 2. What am I? If you answered iPad Mini 3, you are correct.
Here are 10 robots that are designed to work effectively and safely with humans.
What if you could recharge your mobile device using the movements you make all day? That’s the promise of Ampy, a new device by a Chicago-based startup of the same name.
What's lighter than Air? An Air 2. Join us as we disassemble the new, shaved-down iPad Air 2, and see whether Apple's thinnest device is still its least-repairable.
Think there’s already a high bar in owning a Ferrari? Well, grab a pole vault, because that bar just got raised.
Design News Webinar Series
10/7/2014 8:00 a.m. California / 11:00 a.m. New York
9/25/2014 11:00 a.m. California / 2:00 p.m. New York
9/10/2014 11:00 a.m. California / 2:00 p.m. New York
7/23/2014 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.
Nov 3 - 7, Engineering Principles behind Advanced User Interface Technologies
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6


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.
Next Class: 10/30 11:00 AM
Sponsored by Stratasys
Next Class: 10/30 2:00 PM
Sponsored by Gates Corporation
Next Class: 11/11-11/13 2:00 PM
Sponsored by Littelfuse
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service