Generate Mapped CI Engine from a Spreadsheet

This example uses:

If you have Model-Based Calibration Toolbox™ and Stateflow^®, you can use the engine dynamometer reference application to generate lookup tables for the Mapped CI Engine block. The reference application uses engine data to calibrate the engine and generate the tables.

If it is not opened, open the reference application.
```
autoblkCIDynamometerStart 
```
Click Generate Mapped Engine from Spreadsheet.

Step 1: Generate Mapped Engine Calibration

Use the Spreadsheet file field to provide a data file. By default, the reference application has CiEngineData.xlsx containing required and optional data. The tables summarize the data file requirements for generating calibrated tables that are functions of either injected fuel mass or engine torque and engine speed.

Note

To specify the lookup table type, in the Mapped CI Engine block, set the Input command parameter to Fuel mass or Torque.

Firing data contains data collected at different engine torques and speeds.

Firing Data	Description	Data Requirements for Generating Mapped Engine Tables
Firing Data	Description	Function of Fuel Mass and Engine Speed	Function of Torque and Engine Speed
FuelMassCmd	Injected fuel mass, in mg per injection	Required	Not used
Torque	Engine torque command, in N·m	Required	Required
EngSpd	Engine speed, in rpm	Required	Required
AirMassFlwRate	Air mass flow, in kg/s	Optional	Optional
FuelMassFlwRate	Fuel mass flow, in kg/s	Optional	Optional
ExhTemp	Exhaust temperature, in K	Optional	Optional
BSFC	Engine brake-specific fuel consumption (BSFC), in g/kWh	Optional	Optional
HCMassFlwRate	Hydrocarbon emission mass flow, in kg/s	Optional	Optional
COMassFlwRate	Carbon monoxide emission mass flow, in kg/s	Optional	Optional
NOxMassFlwRate	Nitric oxide and nitrogen dioxide emissions mass flow, in kg/s	Optional	Optional
CO2MassFlwRate	Carbon dioxide emission mass flow, in kg/s	Optional	Optional
PMMassFlwRate	Particulate matter emission mass flow, in kg/s	Optional	Optional

Nonfiring data contains data collected at different engine speeds without fuel consumption.

Nonfiring Data	Description	Data Requirements for Generating Mapped Engine Tables
Nonfiring Data	Description	Function of Fuel Mass and Engine Speed	Function of Torque and Engine Speed
FuelMassCmd	Injected fuel mass, in mg per injection	Not used	Not used
Torque	Engine torque command, in N·m	Required	Required
EngSpd	Engine speed, in rpm	Required	Required
AirMassFlwRate	Air mass flow, in kg/s	Optional	Optional

Click Generate mapped engine calibration to generate response surface models in the Model-Based Calibration Toolbox and calibration in CAGE (CAlibration GEneration). CAGE and the model browser open when the process completes. To calibrate the data, Model-Based Calibration Toolbox uses templates.
- The Model Browser provides the response model fits for the data contained in the data file, for example:
- The CAGE Browser provides the calibrated data, for example:

Step 2: Apply Calibration to Mapped Engine Model

When you click Apply calibration to mapped engine model, Powertrain Blockset™:

Updates the Mapped CI Engine block parameters with the calibrated table and breakpoint data.
Updates the CI Controller with the fuel mass per injection table if the Mapped CI Engine block tables are functions of fuel mass and engine speed.
Sets the Mapped CI Engine as the active variant.
Executes the engine mapping experiment.

When the dynamometer engine mapping completes, use the Simulation Data Inspector to verify the results.

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