| CPC F16H 61/4183 (2013.01) [F16H 61/143 (2013.01); F16H 2059/467 (2013.01)] | 12 Claims |
|
1. A control system for modeling and controlling a torque converter of a vehicle, the control system comprising:
a set of sensors configured to monitor a set of parameters including a vehicle speed, a torque request for a driveline of the vehicle, a state of the torque converter, and a gear ratio of an automatic transmission connected between a turbine of the torque converter and the driveline, wherein the torque converter further includes an impeller fluidly connected to a driven shaft of a torque generating system of the vehicle; and
a controller configured to:
access a look-up table relating (i) various K-factors of the turbine to (ii) various K-factors of the impeller, speed ratios of the torque converter, and torque ratios of the torque converter;
based on the set of parameters, calculate a K-factor of the turbine;
determine a speed ratio and a torque ratio of the torque converter based on the calculated turbine K-factor using the look-up table;
determine a target speed and a target torque for the impeller based on the determined speed and torque ratios of the torque converter; and
control the torque generating system to achieve the target impeller speed and torque to thereby achieve the torque request at the driveline and mitigate or eliminate noise/vibration/harshness (NVH) corresponding to inconsistent acceleration/feel of the vehicle by a driver.
|