Internal Combustion Mapped and Dynamic Engine Models

When you customize a SI or CI reference application, you can use either a dynamic or mapped engine model. The table provides considerations for using either implementation.

Type

Implementation

When to Use

Mapped

CiMappedEngine

SiMappedEngine

Model uses a set of steady-state lookup tables to characterize engine performance.

The tables provide overall engine characteristics, including actual torque, fuel flow rate, BSFC, and engine-out exhaust emissions.

  • If you have engine data from a dynamometer or a design tool like GT-POWER.

  • For quasi steady-state engine simulations.

Dynamic

CiEngine

SiEngine

Model decomposes the engine behavior into engine characteristics that are separated into lower-level components. By combining components in this way, the models capture the dynamic effects.

  • If you need a more detailed dynamic model and have component-level data.

  • To analyze the impact of individual engine components on the overall performance.

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