WOLFRAM SYSTEM MODELER
T_demandBlock that calculates the demanded torque of the basic engine based on engine speed and throttle. |
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Wolfram Language
In[1]:=
SystemModel["IndustryExamples.AutomotiveTransportation.Driveline.Components.EnginePackage.Utilities.T_demand"]
Out[1]:=
Information
This block calculates the demanded torque of the basic engine based on engine speed and throttle. The equations have been derived from [1] and they capture the following features:
- The maximum torque
- The torque decrease at high engine speed
- Idling and idle speed control
- Engine braking at speeds over idling
The default parameters have been set so that the maximum output torque corresponds to a generic engine.
[1] P. Nobrant, "Driveline Modelling using MathModelica," MSc thesis, Vehicular Systems, Linköping Institute of Technology, Sweden, 2001. www.fs.isy.liu.se/Publications/MSc/01_EX_3114_PN.pdf
Parameters (7)
| m_ac_Min |
Value: 0.0021 Type: Mass (kg) Description: Minimum mass of air in cylinders |
|---|---|
| m_ac_Max |
Value: 0.0759 Type: Mass (kg) Description: Minimum mass of air in cylinders |
| p_amb |
Value: 101.3 * 10 ^ 3 Type: Pressure (Pa) Description: Ambient pressure |
| p_i_Min |
Value: 1.222 * 10 ^ 4 Type: Pressure (Pa) Description: Minimum intake manifold pressure |
| c0 |
Value: 77870000.0 Type: Real (1/(m⋅s²)) Description: Torque demand constant |
| c1 |
Value: 0.006117 Type: Volume (m³) Description: Torque demand constant |
| c2 |
Value: 0.0008426 Type: Volume (m³) Description: Torque demand constant |
Connectors (3)
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u1 |
Type: RealInput Description: Connector of Real input signal 1 |
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u2 |
Type: RealInput Description: Connector of Real input signal 2 |
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y |
Type: RealOutput Description: Connector of Real output signal |
Used in Components (1)
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IndustryExamples.AutomotiveTransportation.Driveline.Components.EnginePackage Engine as implemented in "Driveline Modelling using MathModelica", Per Nobrant. |