Record Display for the EPA National Library Catalog

RECORD NUMBER: 7 OF 9

OLS Field Name OLS Field Data
Main Title Tire Energy Dissipation Determination.
Author Hayhoe, Gordon F. ;
CORP Author Pennsylvania Transportation Inst., University Park.;Environmental Protection Agency, Cincinnati, OH.
Year Published 1982
Report Number PTI-8212; EPA-63-03-2763;
Stock Number PB83-111633
Additional Subjects Automobile tires ; Test equipment ; Rolling contact loads,Rolling friction ; Energy dissipation ; Structural design ; Equipment specifications ; Nondestructive tests ; Rolling resistance
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB83-111633 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 85p
Abstract
The design and development of a machine to measure tire energy dissipation over transient driving cycles is described. The main feature of the machine is that two tires are loaded against each other across a steel belt which runs on 762-mm diameter steel drums. One of the wheels is driven to follow a transient driving cycle representative of typical passenger car use; the other wheel is allowed to roll freely. Energy dissipation in the driving tire is measured by subtracting the energy leaving the tire from the energy entering the tire. An error, ascribed to small deformations of the belt in the tire contact area, was found in the tire energy measurement. This error is a function of the construction of the tires installed on the machine. A number of modifications to the machine and the test procedures are suggested to improve the accuracy of the energy dissipation measurements. Typical energy dissipation measurements for C-14 tires are presented.