Abstract: A system and method can control a transmission during a flying engine start. The method includes receiving a request for an internal combustion engine to be started while a vehicle is solely driven by an electric motor-generator. Further, the method determining a time lapse between a moment when a first clutch starts to be filled and a moment when a second clutch starts to be filled such that the first clutch and the second clutch reach first and second clutch pressure thresholds, respectively, at substantially the same time. The method includes transferring transmission fluid to the first clutch and transferring transmission fluid to the second clutch after the determined time lapse has passed since the first clutch started to be filled.

Abstract: A system and method can control a transmission during a flying engine start. The method includes receiving a request for an internal combustion engine to be started while a vehicle is solely driven by an electric motor-generator. Further, the method determining a time lapse between a moment when a first clutch starts to be filled and a moment when a second clutch starts to be filled such that the first clutch and the second clutch reach first and second clutch pressure thresholds, respectively, at substantially the same time. The method includes transferring transmission fluid to the first clutch and transferring transmission fluid to the second clutch after the determined time lapse has passed since the first clutch started to be filled.

Abstract: The method can control an automatic transmission and includes the following steps: (a) determining, via a controller, an initial gear ratio of the automatic transmission based on a gear shift map while the vehicle is solely driven by an electric motor-generator; (b) identifying a plurality of potential clutches of the automatic transmission based on the initial gear ratio; (c) determining a temperature of a transmission fluid; (d) determining which of the potential clutches has a largest fill time in order to identify at least one of a plurality of target clutches; (e) determining, via the controller, a target gear ratio of the automatic transmission based on at least one identified target clutch; (f) transferring sufficient transmission fluid to at least one identified target clutch to reach a pressure threshold in the target clutches.