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

Metal/Plastic Car Wheel Boosts MPG

NO RATINGS
View Comments: Oldest First|Newest First|Threaded View
<<  <  Page 3/4  >  >>
ChrisP
User Rank
Silver
Re: Cost Benefit
ChrisP   2/11/2013 9:40:12 PM
NO RATINGS
I don't believe you know enough about wheel aerodynamics to make that statement.  I don't believe that Ford couldn't make that same wheel out of aluminum.  There are certainly wheels that are even more aerodynamic. Despite their claims car companies are not really interested in aerodynamics otherwise they would make them aerodynamic.  Cars today are still far worse drag wise than the cars like the Jaray in the 1930's.  Car companies are intrested in making profits these days not selling transportation. 





Ann R. Thryft
User Rank
Blogger
Re: News to me
Ann R. Thryft   2/12/2013 10:56:05 AM
NO RATINGS
Elizabeth, the company said that working on wheels to improve MPG is a relatively new effort in the industry.



Ann R. Thryft
User Rank
Blogger
Re: Huge improvement
Ann R. Thryft   2/12/2013 11:01:06 AM
NO RATINGS
As Lacks said in the story, it's not just lighter weight, but also better aerodynamics that result in the 1.1 MPG improvement, as shown by the third-party tests.

Rigby5
User Rank
Gold
Re: News to me
Rigby5   2/12/2013 11:16:48 AM
NO RATINGS
While I can see that wheels can be made lighter and save gas, this does not seem like such a serious attempt.  To reduce drag as much as possible, the wheel should really have no holes or ridges at all.  In fact instead of a Moon, the wheel should be dished in order to smoothen linear air flow.  Brake cooling should be air from below the car being ducted behind the wheel.  In fact, the whole bottom of the car should be smooth, totally unlike what they do now. 

So I can't really take this article that seriously, because obviously car makers and buyers really don't care.  Otherwise they would have addressed these more glaring issues.  Instead, the main factor for wheels must be cosmetic, with wheels having larger and larger openings these days, when they really should have no openings at all.  The trouble is the customers are ignorant and the makers don't want to educate them. 

And what I would really like to see is a comparison with all plastic wheels, such as fiberglass or graphite composite.

Elizabeth M
User Rank
Blogger
Re: News to me
Elizabeth M   2/12/2013 2:23:58 PM
NO RATINGS
Ah, I see...well as always you are on the cutting edge of coverage, Ann. I should have known! :) In all seriousness, I do like the way designers are thinking outside of the box (or in this case, the power train) to come up with new ways to be more fuel efficient and economical.

Ann R. Thryft
User Rank
Blogger
Re: News to me
Ann R. Thryft   2/12/2013 4:31:08 PM
NO RATINGS
Rigby5, I've asked the company to address some of the issues raised in the comments here. Meanwhile, regarding holes, it's my understanding that these were in fact reduced in this wheel in part by the plastic fill and in part by the redesign. Also, this is a cutaway diagram, so much of the apparent " holes" on the right are not actually there in the finished wheel.

Ann R. Thryft
User Rank
Blogger
Re: METAL/PLASTIC WHEELS
Ann R. Thryft   2/12/2013 4:59:57 PM
NO RATINGS
bobjengr, I agree about incremental developments. While it's easy to wish we could just figure out and execute/implement everything all at once, real life tends not to work that way.

Charles Murray
User Rank
Blogger
Re: Huge improvement
Charles Murray   2/13/2013 1:44:57 PM
NO RATINGS
You're right, sensor_pro, and all of the automakers are already doing everything you mentioned here and more. Automotive engineers are looking at everything in an effort to get to 54.5 in the next 12 years. If they could find about 25 more things that improve mpg like this does, they'd be on the verge of success. The big question, though, is how much will all of these improvements cost? If we have to load the vehicle with composites and other lightweight materials, and the cost gets driven up by a factor of two or more, they're going to find a lot of consumers holding onto their old cars.

evolvewheel
User Rank
Iron
Information on eVOLVE hybrid wheel...
evolvewheel   2/14/2013 9:40:49 PM
NO RATINGS
Our experience is that fuel efficiency related to automotive wheels is a relatively unexplored area of technology, although efforts have been focused on mass and inertia...as well as aerodynamics.  The eVOLVE hybrid wheel is one of the first programs to focus on good wheel design from a structural and aerodynamic perspective, relative to the impact on fuel economy itself.  Previously, most efforts considered either mass or aerodynamics seperately and usually for some attribute other than fuel economy.  We believe the eVOLVE philosophy will greatly assist the OEM's in their efforts to improve fuel economy without sacrificing great design.  The results and video showing the coast down and wind tunnel testing are available at www.evolvehybrid.com

evolvewheel
User Rank
Iron
Information on eVOLVE hybrid wheel Part 2
evolvewheel   2/14/2013 9:42:23 PM
NO RATINGS
The Lacks composite wheel system has been proven with over 24 million wheel assemblies delivered to OEM's globally over the past 15 years.  There have been virtually no field issues due to excessive brake heats from disc or drum brake systems.  We routinely test our Chromtec wheels on-vehicle through the Death Valley Brake Fluid Boil protocols and also through similar on-vehicle high brake heat exposure testing through the Gros-Glockner drive route in Europe.  These tests are used by most of the global OEM's to evaluate wheel products and technologies for durability and reliability.  The Lacks composite is approved for virtually all production vehicle applications and its designs are intended to provide both sufficient cooling to the brake system and optimized weight and aerodynamic performance to the overall vehicle system itself...achieved through great design.

<<  <  Page 3/4  >  >>
Partner Zone
More Blogs from Engineering Materials
The amount of plastic clogging the ocean continues to grow. Some startling, not-so-good news has come out recently about the roles plastic is playing in the ocean, as well as more heartening news about efforts to collect and reuse it.
Optomec's third America Makes project for metal 3D printing teams the LENS process company with GE Aviation, Lockheed, and other big aerospace names to develop guidelines for repairing high-value flight-critical Air Force components.
Lots of people who write about robots say they give us jobs, instead of taking them away from humans. Based on the evidence in some recent studies, I'm not so sure.
A self-propelled robot developed by a team of researchers headed by MIT promises to detect leaks quickly and accurately in gas pipelines, eliminating the likelihood of dangerous explosions. The robot may also be useful in water and petroleum pipe leak detection.
Aerojet Rocketdyne has built and successfully hot-fire tested an entire 3D-printed rocket engine. In other news, NASA's 3D-printed rocket engine injectors survived tests generating a record 20,000 pounds of thrust. Some performed equally well or better than welded parts.
Design News Webinar Series
7/23/2014 11:00 a.m. California / 2:00 p.m. New York
7/17/2014 11:00 a.m. California / 2:00 p.m. New York
6/25/2014 11:00 a.m. California / 2:00 p.m. New York
5/13/2014 10:00 a.m. California / 1:00 p.m. New York / 6:00 p.m. London
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Aug 4 - 8, Introduction to Linux Device Drivers
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: August 12 - 14
Sponsored by igus
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