公开(公告)号：US11274617B1

公开(公告)日：2022-03-15

申请号：US16995940

申请日：2020-08-18

Applicant: Caterpillar Inc.

Inventor： Suman Goli ,  Andrew Nathan Schifferer ,  Kirk Anderson ,  Patrick William Sullivan, Jr. ,  Ryan Robert Stoffel ,  Phillip Alvin Hartz

IPC: F02D41/14 ,  F02D41/02 ,  F02D41/26

Abstract: A system includes an engine adapted to output a torque, a parasitic load adapted to receive a portion of the torque from the engine, and a controller communicably coupled to the parasitic load. The controller is configured to determine an actual exhaust temperature value of an exhaust gas flow exiting the engine and a minimum fuel amount to be injected into the engine. The controller is configured to compare the actual exhaust temperature value with an exhaust temperature threshold value of the exhaust gas flow to determine a first difference between the actual exhaust temperature value and the exhaust temperature threshold value. The controller is configured to determine a target torque output of the engine based on the first difference and the minimum fuel amount. The controller is configured to cause the torque to be increased to attain the target torque output using the parasitic load.

公开(公告)号：US20220056862A1

公开(公告)日：2022-02-24

申请号：US16995940

申请日：2020-08-18

Applicant: Caterpillar Inc.

Inventor： Suman Goli ,  Andrew Nathan Schifferer ,  Kirk Anderson ,  Patrick William Sullivan, JR. ,  Ryan Robert Stoffel ,  Phillip Alvin Hartz

IPC: F02D41/02 ,  F02D41/14 ,  F02D41/26

Abstract: A system includes an engine adapted to output a torque, a parasitic load adapted to receive a portion of the torque from the engine, and a controller communicably coupled to the parasitic load. The controller is configured to determine an actual exhaust temperature value of an exhaust gas flow exiting the engine and a minimum fuel amount to be injected into the engine. The controller is configured to compare the actual exhaust temperature value with an exhaust temperature threshold value of the exhaust gas flow to determine a first difference between the actual exhaust temperature value and the exhaust temperature threshold value. The controller is configured to determine a target torque output of the engine based on the first difference and the minimum fuel amount. The controller is configured to cause the torque to be increased to attain the target torque output using the parasitic load.