METHOD OF SETTING TRANSMISSION SHIFT POINTS IN REAL-TIME BASED UPON AN ENGINE PERFORMANCE CURVE

摘要

A method for setting a shift point for shifting a transmission for a powered vehicle between a first gear ratio and a second gear ratio. The method includes determining input power data points based on real-time input torque data. The input torque data includes a maximum input torque. The method also includes calculating a gear step value based on the first gear ratio and second gear ratio. The method further includes determining a first power value and computing a second power value based on the gear step value. The first power value and second power value are compared to one another and adjustments are incrementally made in the first power value speed until the difference between first and second power values meets a threshold. The shift point is therefore based on the result of comparing the first power value and the second power value and the corresponding speed associated with the first power value.

主权项

1. A method of establishing a shift point for shifting an automatic transmission in a powered vehicle during a full throttle shift from a first gear ratio to a second gear ratio, the transmission having a controller, comprising:
receiving torque data from a data bus electrically coupled to the controller, the torque data including a maximum torque value; converting the torque data to power data; calculating a gear step value based on the first gear ratio and second gear ratio; determining a first speed value and first power value based on the power data; computing a second speed value based on the gear step value; determining a second power value based on the second speed value; comparing the first power value and the second power value to one another; and setting the shift point based on the result of comparing the first power value and the second power value.