SAE Recommended Practice J1540 provides an indirect method of measuring transmission efficiency. The method involves measuring torque losses resulting from a dynamometer setup in which two test transmissions are mounted in a fashion that allows them to rotate about their input and output shafts. For a variety of reasons, an energy-in-energy-out measurement approach may be more practical for heavy-duty vehicle transmissions. With an appropriate test setup, the analysis simplifies to comparing the torque entering the transmission to the torque leaving it, factoring in the gear ratio.
Utilizing An Energy-In-Energy-Out Approach to Simplify Heavy-Duty Transmission Efficiency Testing
Sae Technical Papers
International Truck & Bus Meeting & Exposition ; 2000
2000-12-04
Conference paper
English
Utilizing an energy-in-energy-out approach to simplify heavy-duty transmission efficiency testing
Automotive engineering | 2000
|Energy conversion efficiency of hybrid electric heavy-duty vehicles
Automotive engineering | 2009
|Energy Conversion Efficiency of Hybrid Electric Heavy-duty Vehicles
SAE Technical Papers | 2009
|Efficiency testing of heavy duty off highway axles
Automotive engineering | 2014
|Tema Archive | 1989
|