US 2016/0281845 A1 · Transmission Calibration Tool

Abstract

A transmission calibration tool automatically generates a detailed gearbox model based on a user input transmission topology description. During transmission calibration, the tool accepts inputs from transmission speed and torque sensors and estimates component torques for each gear element and each shift element. Following a shift or other transmission event, the calibration tool plots the component torques as a function of time, permitting the calibration engineer to better understand what is occurring during the event, and thus reducing the time required for calibration. The calibration tool also adapts several transmission component models and outputs the adapted models to provide insight into actual transmission component behavior.

Claims19

Dependent claims

A transmission calibration tool comprising:

a user interface configured to accept a transmission topology description including a list of gearing components, a list of fixed connections among the gearing components, an input shaft, a turbine shaft, and an output shaft, a list of shift elements, a list of transmission states indicating which shift elements are engaged to establish each state, a list of speed sensors, and a list of torque sensors;
a transmission interface configured to accept input signals from the speed sensors and the torque sensors;
a processor programmed to monitor the input signals during a shift event and to estimate torques exerted by gear elements or shift elements at intervals during the shift event based on the input signals and the topology description;
and
a display configured to plot the torques after the shift event.

2 more elements

Dependencies are inferred from the claim text.

Transmission Calibration Tool

Life of this patent

Transmission Calibration Tool

Life of this patent

Abstract

Claims19