1 / 5

Low Rolling Resistance Tires

Low Rolling Resistance Tires. Tom Murphy Energy Technology & Policy December 6, 2007. Rolling Resistance. Car engine must overcome rolling friction to propel the vehicle forward — this requires fuel consumption Rolling Friction Force:. Rolling Friction Force. Normal Force (vehicle weight).

jocelyn-mays
Download Presentation

Low Rolling Resistance Tires

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Low Rolling Resistance Tires Tom Murphy Energy Technology & Policy December 6, 2007

  2. Rolling Resistance • Car engine must overcome rolling friction to propel the vehicle forward — this requires fuel consumption • Rolling Friction Force: Rolling Friction Force Normal Force (vehicle weight) Rolling Resistance Coefficient

  3. Facts About Tires • Vehicle manufacturers usually install LRR tires on new vehicles to help meet CAFÉ standards more easily • Most replacement tires are not LRR • ~237 million replacements sold each year • None are labeled with any indication of their rolling resistance coefficients

  4. Benefits • A 10% decrease in Crr can decrease fuel consumption by 1-2% • California Energy Commission estimates total gasoline use can be reduced 1.5-4.5% if all tires in use were LRR • This can be safely implemented with current technology

  5. Questions ?

More Related