Chassis Dynamometer Simulation of Road Load Using Coastdown Techniques

Standard:
Revised:
  • 2014-01-24
 
  • CURRENT
Publisher:
  • SAE International
Pages:
22
Scope:

This procedure covers vehicle operation and electric dynamometer load coefficient adjustment to simulate track road load within dynamometer inertia and road load simulation capabilities. 1.1 Purpose To provide a uniform procedure for adjusting an electric chassis roll dynamometer to provide accurate simulation of the resistance which must be overcome by the vehicle powertrain to maintain steady speed on a flat road, as determined by track coastdown tests on that vehicle.

Rationale:

This procedure has been revised to include a new fixed-run test option, provisions for four-wheel drive dynamometer and 20°F testing, and updates to definitions and nomenclature aimed at harmonizing these quantities across related SAE documents.

History:
Standard Published Revision Status
J2264_201401 2014-01-24 Latest Revised
1995-04-01 Historical Issued
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