Patent ID: 11866049
Assignee: FORD GLOBAL TECHNOLOGIES, LLC
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 15:
16. A vehicle comprising:
an engine configured to generate power;
a transmission configured to transfer power from the engine to at least one drive wheel to propel the vehicle; and
a controller programmed to,
in response to a command to shift the transmission and a corresponding command to decrease a torque of the engine to less than a threshold corresponding to a spark retard limit during the shift to compensate for flare at an input to the transmission, (i) retard an engine spark at the spark retard limit to reduce the torque of the engine to the threshold and (ii) shutdown at least one cylinder of the engine to further reduce the torque of the engine to less than the threshold during the shift, and
in response to the command to shift the transmission and a corresponding command to decrease the torque of the engine to greater than the threshold during the shift to compensate for flare at the input to the transmission, (i) retard the engine spark at less than or equal to the spark retard limit and (ii) maintain operation of all cylinders of the engine to reduce the torque of the engine to greater than the threshold during the shift, wherein the torque of the engine is reduced based on a rate of change of the flare.