Stall speed in Torque Converter Blockset

How can I set the Stall speed for the Torque Converter block under Simscape / Driveline / Couplings & Drives of Simulink

For more information, torque converter stall speed is the maximum amount of engine RPM that can be achieved in an automatic transmission-equipped vehicle while the transmission is in a forward operating range without generating any driveshaft motion

Answer 1

[Ruchika]

Hi, in Simscape, there is no direct parameter or setting available to set the stall speed for the Torque Converter block in the Simscape/Driveline/Couplings & Drives library. One possible approach is to use a Tachometer block to measure the input speed to the torque converter. Implement custom control logic using Simulink blocks or MATLAB functions to detect when the input speed is below the stall speed threshold. When the input speed is below the stall speed, you can use a controlled clutch or a controlled torque source to prevent driveshaft motion. Conversely, when the input speed is above the stall speed, allow the clutch or torque source to transmit torque and enable driveshaft motion.

To learn more about the Tachometer block, please check out the MathWorks documentation links below:

Read rotational speed of shaft - Simulink (mathworks.com)

[Quan Nguyen Vo Hoang]

Dear Ruchika, thanks for your quick response.

Please see figure below for more information of my case

I use both the Torque converter block and Friction disk clutch (representing Lock-up clutch) to simulate the Torque converter in transmission. I'm thinking of the idea to use a function/feature so that to disconnect the power transfer by fluid in the TC. In this case, can we do so?