Acceleration Powertrain Models

Instructions to run the models are found in blue text.

Electric powertrain with simple Traction Control:

The model is loosely based around the Rimac Concept S, but with some adaptations to push the the limit of the simplified traction control. The model is set with 4 motors that can each produce 600 Nm on startup.

NOTE, the following simplifications are applied to the model:

1) Full throttle applied immediately - in order to exercise the traction control model

2) One-dimensional look-up table for e-Motor torque

3) Simple tyre model - exponential formulae (best traction at 10% slip)

4) Two-speed gearbox

5) Zero-shift times

click on the image to download all model files

Simple instructions to run the model:

1) Unzip all model files to the preferred folder

1) Start Matlab 2013b or a version which accepts the .slx file format

2) Point the Matlab active folder to the location of the .slx .m and .mat files

3) Right click on the .m file and select "Run" - this loads the parameters used by the model and runs the simulation

5) Open the .m file to alter parameters that affect the simulation

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Internal combustion engine:

To make the model useful and interesting for the user, it has been created around the 5 litre twin turbo powertrain of the Koenigsegg Agera One:1, which produces approximately 1150 horsepower.

Acceleration and maximum speed can be simulated with different engine and gearbox parameters.

NOTE, the following simplifications are applied to the model:

1) Full throttle applied immediately - further models can apply some ramp input

2) One-dimensional look-up table for engine torque - engine produces maximum possible torque and power

3) Perfect tyre traction - further models can apply some slip

4) Zero-shift times - further models can apply a time delay to each gear shift

click on the image to download all model files

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Internal combustion engine - Crossley & Cook model:

Acceleration model files

To make the model useful and interesting for the user, it has been created around the 600cc normally aspirated powertrain of a Formula SAE race car.

This model now simulates the engine in a more realistic way proposed by Crossley & Cook. (Mathworks Engine Model explanation).

This method models a four cylinder spark ignition engine from the air-fuel mixture into the inlet.

Simple instructions to run the model:

1) Start Matlab 2013b or a version which accepts the .slx file format

2) Point your active folder to the location where you have saved the .slx and .mat files

3) Right click on the .mat file and select "Load" - this loads the parameters used by the model into the workspace

3) Double click on the .slx file to open it

4) Press the Play button to simulate the model

5) Edit the parameters in the workspace to alter behaviour of the powertrain to suit your needs

Further notes