Real-time tracking and filtering of estimated driveline ratios

A computer-implemented method performed by a computer system comprising one or more processing units, the method comprising:

• obtaining a current engine speed for a vehicle;
• obtain a current vehicle speed for the vehicle;
• calculating a current driveline ratio for the vehicle based on the current engine speed and the current vehicle speed;
• determine whether a driveline of the vehicle is engaged;
• and
• if the driveline of the vehicle is engaged, perform an update of a mapping of transmission gears and respective driveline ratios for the vehicle based at least in part on the current driveline ratio.

A non-transitory computer-readable medium having computer-executable instructions stored thereon that, in response to execution by one or more processors of a computer system, cause the computer system to perform actions comprising:

• obtain a current engine speed for a vehicle;
• obtain a current vehicle speed for the vehicle;
• calculate a current driveline ratio for the vehicle based on the current engine speed and the current vehicle speed;
• determine whether a driveline of the vehicle is engaged;
• and
• if the driveline of the vehicle is engaged, perform an update of a mapping of transmission gears and respective driveline ratios for the vehicle based at least in part on the current driveline ratio.

A vehicle comprising:

• a powertrain comprising an engine connected to a transmission, the transmission having a number of gears;
• at least one processing unit;
• and
• one or more computer-readable media having stored therein a driveline ratio data store for the vehicle and computer-executable instructions, wherein the driveline ratio data store comprises a mapping of the transmission gears and respective driveline ratios for the vehicle, and wherein the computer-executable instructions are configured to cause the at least one processing unit to:
• obtain a current engine speed for the engine;
• obtain a current vehicle speed for the vehicle;
• calculate a current driveline ratio for the vehicle based on the current engine speed and the current vehicle speed;
• determine whether a driveline of the vehicle is engaged;
• and
• if the driveline of the vehicle is engaged, perform an update of the mapping of transmission gears and respective driveline ratios for the vehicle based at least in part on the current driveline ratio.