Engine Protection
The Engine Protection function provides settings that allow the engine to be placed in a safer state of tune, in up to 3 different severity levels, when an error or fault condition has been detected. Each sensor has an option to set between no engine protection and from Level 1 to 3 of engine protection for each error or fault condition. Per cylinder shutdowns based on a maximum Exhaust Gas Temperature is also available for engine protection. Common uses are with low oil pressure, low fuel pressure, excessive temperatures on certain sensors, and lean AFR conditions.
Level 1 (Least Severe), Level 2, and Level 3 (Most Severe) Tabs
Each level of severity can be individually enabled or disabled as required. The same types of settings are available for all 3 levels of severity, with each level able to have its own values.
Enable
Enables or Disables each severity level.
Enrichment
Available when there is no Target Lambda table, such as when the Fuel Tuning Method is set to Injection Time. This allows for a percentage of fuel to be added as an overall fuel correction while the Engine Protection is active. Running in a richer state of tune can add a level of extra protection to the engine under certain circumstances. (Default Level 1 = 2.0, Level 2 = 5.0, Level 3 = 10.0)
Target Lambda Enrichment
Available when the Target Lambda table is available, such as when the Fuel Tuning Method is set to Volumetric Efficiency or Mass Air Flow, or O2 Control is active. This allows for an amount of Lambda/AFR to be deducted from the Target Lambda (richer) while the Engine Protection is active. Running in a richer state of tune can add a level of extra protection to the engine under certain circumstances. (Default Level 1 = 0.2, Level 2 = 0.5, Level 3 = 1.0)
Boost Correction
Available when the Boost Control function is enabled. This allows for a percentage correction in boost pressure to be set while the Engine Protection is active. (Default Level 1 = 0.0, Level 2 = -50.0, Level 3 = -100)
Retard
An amount of ignition timing to be reduced (retarded) while the Engine Protection is active. Running in a more retarded ignition state can add a level of extra protection to the engine under certain circumstances. (Default Level 1 = 2.0, Level 2 = 5.0, Level 3 = 5.0)
Rev Limit Type
Select the type of engine limiter to be used, either Fuel or Ignition Cut. (Default = Fuel Cut)
Rev Limit End
The RPM limit to be imposed while engine protection is active. A lower RPM limit can be set to protect an engine. The Elite ECU will use the lowest limiter set throughout the system, whether it is the Main Limiter, Launch Control or the Engine Protection. (Default Level 1 = 10000, Level 2 = 4500, Level 3 = 2000)
Active Condition
Selects the conditions that need to be met to resume normal engine operation.
Current and Past DTCs
Engine Protection will be active until the DTC has been erased by using the ESP software. Normal engine operation will not resume until this has been completed. Typically used for more severe errors or faults.
Current DTCs only (Drive Cycle)
Engine Protection will be active until the ECU is powered off. Normal engine operation will resume on restart. Typically used for less severe errors or faults.
Cylinder Shutdown Tab
Only available when Exhaust Gas Temperature is enabled and set with one sensor each cylinder.
Enable
Enables the per-cylinder shutdown, which when active will cut ignition and injection to the cylinder whose Exhaust Gas Temperature (EGT) exceeded the Max EGT limit. This cut will continue until the ECU is reset or power cycled.
Max EGT
The shutdown will be applied to a cylinder if the EGT in that cylinder reads above this value for longer than the time specified in the Delay setting.
Delay
The EGT must exceed the max EGT for this period of time before a shutdown will activate. This is to prevent shutdowns from occurring due to a very short-term spike in EGT.
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