Lambda Target Table Control

Table Control Setup

This control determines whether a single target table is used or whether Z-axis blending is enabled between two calibration tables.

Available Options

Mode Descriptions

OFF (0)

Disables the Lambda Target table input

ON - Table 1 (1)

Uses Table 1 only for Lambda Target calculation.

Typically represents the base calibration (e.g. Petrol Lambda Target strategy).

ON - Table 2 (2)

Uses Table 2 only for Lambda Target calculation.

Typically represents an alternative calibration strategy (e.g. Methanol or high-load enrichment strategy).

Not Available (3–4)

Reserved for future functionality and should not be selected.

Cal Slot (5)

Enables real-time switching of the active Lambda Target table via calibration slot selection.

This allows the ECU to switch between pre-defined calibration sets without modifying the Table Control setting. See Tuning view -> Cal Control menu

Example application:

• Table 1 = Petrol Lambda Target calibration
• Table 2 = Methanol Lambda Target calibration

The active table can be switched in real time depending on:

• Fuel type
• Engine mode
• Test or development configuration

This mode is commonly used for:

• Rapid calibration comparison
• Track-side strategy changes
• Different Fuel system

ON - Z-Axis (6)

Enables Z-axis blending between Table 1 and Table 2.

The ECU interpolates between both tables based on the configured Z-axis input (typically Ethanol Content %), producing a blended fuel value.

• 0% Z-axis → 100% Table 1
• 100% Z-axis → 100% Table 2
• Intermediate values → linear interpolation between both tables

Z-Axis Blended (Dual Table Interpolation)

The ECU supports a Z-axis blending strategy that allows lambda targets to be interpolated between two tables based on a third operating axis.

Concept Overview

Two base Lambda Target tables are defined:

• Table 1 (Reference Fuel – Petrol)
  Defines Lambda Targets for standard petrol operation.

• Table 2 (Alternative Fuel – High Oxygen Content Fuel)
  Defines Lambda Targets for high ethanol or methanol operation.

A Z-axis input (typically fuel composition such as ethanol content) is used to interpolate between the two tables.

This example shows the blend between Table 1 and Table 1 spanned on the Z-axis using Ethanol content