Patent ID: 11858495
Assignee: ALLISON TRANSMISSION, INC.
Field: Transport (Mechanical engineering)
Classification: CPC B  F | IPC B

Claim 0:
1. A transmission of a powertrain of a vehicle, the powertrain including an engine and an engine stop-start arbitration controller, the transmission comprising:
a gear and selective coupler arrangement;
a main hydraulic pump operatively coupled to the gear and selective coupler arrangement;
an auxiliary pump operatively coupled to the gear and selective coupler arrangement; and
a transmission control circuit operatively coupled to the main pump and the auxiliary pump, the transmission control circuit configured to:
determine one or more grades of the vehicle at a first location;
determine one or more auxiliary pump speeds of an auxiliary pump of the transmission for an engine stop-start event based on the determined one or more grades of the vehicle at the first location;
determine that one or more of the determined one or more auxiliary pump speeds exceed a threshold allowable speed; and
based on the one of the one or more determined auxiliary pump speeds exceeding the threshold allowable speed, communicate an engine stop-start deny communication to an engine stop-start arbitration controller of the vehicle.