Chassis Dynamometer Simulation of Road Load Using Coastdown Techniques
This procedure covers vehicle operation and electric dynamometer load coefficient adjustment to simulate track road load within dynamometer inertia and road load simulation capabilities.
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.
Simulation and modelingFuel economyTests and Testing
Also known as: SAE J 2264
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