公开(公告)号：US11306669B1

公开(公告)日：2022-04-19

申请号：US17121783

申请日：2020-12-15

Applicant: Caterpillar Inc.

Inventor： Christopher F. Gallmeyer ,  Geetika Dilawari ,  Shawn M. Damm ,  Shivangi Wagle ,  Hannes Marscheider

IPC: F02D41/00

Abstract: A system, apparatus, and method for controlling an engine system can provide fuel reactivity compensation control for an engine of the engine system. The control can include controlling pilot fuel quantity supplied to an engine based on a pilot fuel offset value; and controlling air-to-fuel ratio (AFR) for the engine based on an AFR control trim value. A NOx error value can be used to generate one of the pilot fuel offset value or the AFR control trim value, and an exhaust temperature error value can be used to generate the other of the pilot fuel offset value or the AFR control trim value.

公开(公告)号：US11480119B2

公开(公告)日：2022-10-25

申请号：US17121776

申请日：2020-12-15

Applicant: Caterpillar Inc.

Inventor： Geetika Dilawari ,  Shawn M. Damm ,  Shivangi Wagle ,  Hannes Marscheider

IPC: F02D41/00

Abstract: A system, apparatus, and method for controlling an engine system can provide fuel reactivity compensation control for an engine of the engine system. Pilot fuel quantity supplied to the engine can be controlled using a nitrous oxide (NOx) error. Likewise, air-to-fuel ratio (AFR) for the engine can be controlled using the NOx error. Each of a pilot fuel offset and an AFR control trim can be generated using the NOx error. The pilot fuel offset and the AFR control trim can be used to control the pilot fuel quantity and the AFR, respectively.