公开(公告)号：US11180152B1

公开(公告)日：2021-11-23

申请号：US17065953

申请日：2020-10-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Shushan Bai ,  Nathan M. Picot ,  Brandon M. Fell ,  Gregory M. Wilson ,  Ning Jin

IPC: B60W30/18 ,  B60W10/10 ,  B60W10/06 ,  F02D41/24 ,  F02D17/02

Abstract: A fuel management system includes a memory and a control module. The memory stores fuel rate maps for multiple firing fractions, where: each of the firing fractions corresponds to a respective firing pattern of an engine; at least some of the firing patterns include deactivating one or more cylinders. The control module: for each of the firing fractions, determines a fuel efficiency value for each of multiple transmission gear ratios, where fuel efficiency values are provided for transmission ratio and firing fraction pairs; applies drive ability constraints to provide resultant transmission ratio and firing fraction pairs; subsequent to applying the drive ability constraints and based on the fuel efficiency values, selects one of the resultant transmission ratio and firing fraction pairs; and concurrently operates a transmission and the engine according to the selected one of the transmission ratio and firing fraction pairs.