US 11,774,326 B2
Heavy duty engine regulatory testing for identifying torque or energy loss based on heat transfer
Leo Alphonse Gerard Breton, Washington, DC (US)
Assigned to HORIBA Instruments Incorporated, Irvine, CA (US)
Appl. No. 17/607,710
Filed by HORIBA INSTRUMENTS INCORPORATED, Irvine, CA (US)
PCT Filed Apr. 29, 2020, PCT No. PCT/US2020/030529
§ 371(c)(1), (2) Date Oct. 29, 2021,
PCT Pub. No. WO2020/223389, PCT Pub. Date Nov. 5, 2020.
Claims priority of provisional application 62/840,227, filed on Apr. 29, 2019.
Prior Publication US 2022/0221376 A1, Jul. 14, 2022
Int. Cl. G01M 15/05 (2006.01); G01M 15/02 (2006.01)
CPC G01M 15/05 (2013.01) [G01M 15/02 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for testing an engine in a vehicle, the method comprising:
arranging a bath separate from the vehicle configured to cool a driveline component of the vehicle;
adjusting a temperature of the driveline component to a target temperature;
responsive to the driveline component achieving the target temperature,
operating the engine according to a mapping procedure, and
controlling the bath to maintain the temperature of the driveline component at the target temperature during the operating;
measuring heat transfer from the driveline component to the bath during the operating; and
calculating torque loss or energy loss of the driveline component during the operating based on the heat transfer.