Transmission system with clutch bite point learning logic

A system for a vehicle having an engine, comprising:

• a position-controlled input clutch;
• a position sensor positioned with respect to the position-controlled input clutch;
• gear sets each selected via a corresponding one of a plurality of clutch forks;
• a transmission having an input member that is selectively connected to the engine via the position-controlled input clutch;
• and
• a controller having a memory programmed to learn a bite point of the position-controlled input clutch, wherein the controller executes instructions from the memory to thereby:
• command an engagement of one of the plurality of clutch forks when the transmission is in a park state and the engine is running;
• control an apply position of the position-controlled input clutch via the controller;
• calculate a clutch torque capacity of the position-controlled input clutch while controlling the apply position;
• measure the apply position using the position sensor when the calculated clutch torque capacity equals a calibrated clutch torque capacity;
• record the measured apply position as a clutch bite point in the memory;
• and
• control the transmission using the clutch bite point.

A vehicle comprising:

• an internal combustion engine;
• a position-controlled input clutch;
• a position sensor positioned with respect to the position-controlled input clutch;
• a transmission having:
• a plurality of gear sets, each of which is selected via a corresponding clutch fork of a plurality of clutch forks;
• and
• an input member that is selectively connected to the engine via the position-controlled input clutch;
• and
• a controller in communication with the position-controlled input clutch and the engine, and programmed to learn a clutch bite point of the position-controlled input clutch, wherein the controller executes instructions from a memory to thereby:
• command an engagement of one of the plurality of clutch forks when the transmission is in a park state and the engine is idling;
• control an apply position of the position-controlled input clutch via the controller;
• calculate a clutch torque capacity of the position-controlled input clutch while controlling the apply position;
• measure the apply position using the position sensor when the calculated clutch torque capacity equals a calibrated clutch torque capacity;
• record the measured apply position as a clutch bite point in the memory;
• and
• control the transmission using the clutch bite point.