The Fuel Table provides an indication of the engines volumetric efficiency at unique load / engine speed points. The exact meaning of the numbers in the Fuel Table depends on if Modelled or Traditional Fuel Equation Mode is used. When Modelled mode is used, the numbers are the engines volumetric efficiency. When Traditional mode is used, the numbers are a combination of volumetric efficiency and various other constants.

 

In all cases, INCREASING the Fuel Table numbers INCREASES the amount of fuel which is delivered while decreasing them has the opposite effect.

 

Fuel Table Layout

The number and spacing of the cells in the Fuel Table is completely user adjustable. To adjust the rows or columns press the X key or right click on the fuel table and select Axis Setup. This flexibility allows fine spacing in areas where high resolution/accuracy is required and coarse spacing in less critical areas. The maximum number of columns is 22, while the maximum number of rows is 20.

 

Fuel Table Axis Options

For nearly every application the 'x' axis of the fuel table should be set to engine speed. For the 'y' axis there are a few different choices, the information below will help determine the correct 'y' axis option for your setup.

 

·Naturally aspirated engine with stable intake manifold pressures.

·Equation Load Source - Load=MAP

·Fuel Table Load Axis - MGP

 

·Naturally aspirated engine with unstable intake manifold pressures.

·Equation Load Source - Load=BAP

·Fuel Table Load Axis - TP(Main)

 

·Turbo/Super charged engine with stable intake manifold pressures.

·Equation Load Source - Load=MAP

·Fuel Table Load Axis - MGP

 

·Turbo/Super charged engine with unstable manifold pressures below atmospheric pressure.

·Equation Load Source - Load=BAP/MAP Xover

·Fuel Table 1 Load Axis -TP(Main)

·4D Fuel Table Load Axis - MGP

 

Note: MAP is not recommended as a fuel table load (y) axis option for any of the above setup examples.