US 11,702,059 B2
Systems and methods for online power management for hybrid powertrains
Dheeraj B. Gosala, Columbus, IN (US); and Carlos A. Lana, Columbus, IN (US)
Assigned to CUMMINS INC., Columbus, IN (US)
Filed by Cummins Inc., Columbus, IN (US)
Filed on Jul. 22, 2020, as Appl. No. 16/935,346.
Prior Publication US 2022/0024437 A1, Jan. 27, 2022
Int. Cl. B60W 20/20 (2016.01); B60W 20/00 (2016.01)
CPC B60W 20/00 (2013.01) [B60W 2510/0657 (2013.01); B60W 2510/18 (2013.01); B60W 2510/244 (2013.01); Y02T 10/62 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of online power management for a hybrid powertrain, the method comprising:
pausing, by a controller comprising one or more processors, a power management of the hybrid powertrain when the hybrid powertrain is in operation;
when the power management of the hybrid powertrain is paused,
operating during a first time period, by the controller, the hybrid powertrain at a first speed of a plurality of speeds for a first designated power level of a plurality of designated power levels;
sending a first torque request determined based on the first speed and the first designated power level;
receiving, by the controller, a first set of measurement data collected during the first time period when the hybrid powertrain is operated at the first speed for the first designated power level at a steady state, the first set of measurement data comprising fuel flow rate data;
determining, by the controller, a first brake-thermal-efficiency (BTE) of a plurality of brake-thermal-efficiencies (BTEs) based on the first set of measurement data;
operating during a second time period different from the first time period, by the controller, the hybrid powertrain at a second speed of the plurality of speeds for a second designated power level of a plurality of designated power levels, the second speed being different from the first speed, the second designated power level being different from the first designated power level;
sending a second torque request determined based on the second speed and the second designated power level;
receiving, by the controller, a second set of measurement data collected during the second time period when the hybrid powertrain is operated at the second speed for the second designated power level at the steady state, the second set of measurement data comprising fuel flow rate data; and
determining, by the controller, a second BTE of the plurality of BTEs based on the second set of measurement data; and
selecting, by the controller, a BTE from the plurality of BTEs for each designated power level of the plurality of designated power levels, the selected BTE corresponding to a speed.