I am trying to model a rear wheel drive, light off-road vehicle with an IC Engine, CVT and fixed gear ratio in SimDriveline. I am using the Generic Engine as my source, and I am dividing the power and angular velocity from the engine to get torque as an input into the Variable Ratio Transmission (which represents the CVT, through a signal builder, changing the ratio from 2 to 1 with respect to time). There is also a final gear with an 8:1 ratio.
I have successfully modelled a 3-speed transmission (using dog clutches) with the same parameters, then replaced the 'Gearbox' subsystem with the 'CVT+Final drive'.
The issues I have are that;
1. When throttle is fully depressed (signal at 1) the Variable Ratio Transmission does not seem to vary the ratio (even when I make the slope of the ratio variation very high), rather the engine max's out and I get an error message.
2. When I input an impulse signal to the engine, the engine revs rise from stall rapidly to just below max (depending on the size of the impulse), and it stays there for the whole 60s simulation, while the engine power rises to max then drops back down to zero, which means I have no torque (there is a momentary large oscillation on the torque sensor, which dies out quickly) going into the CVT, and the vehicle hardly moves.
I am struggling to understand why the model is not working. I have attached the .slx and .mdl file in a zip folder. Thanks in advance