AEM 30-71XX Infinity Stand-Alone Programmable Engine Mangement System Full Manual User Manual
Page 162
156
© 2014 AEM Performance Electronics
Infinity User Manual
Idle FB Deadband +:
Within this range above the target idle RPM, idle feedback is paused and additional
feedback will not be calculated.
Min value = 0 RPM, Max value = 300 RPM
Idle FB Deadband -:
Within this range below the target idle RPM, idle feedback is paused and additional
feedback will not be calculated.
Min value = -300 RPM, Max value = 0 RPM
Idle Offsets:
Idle AC Offset:
When the Air Conditioning system is activated, the compressor and/or fan will put an
additional load on the engine. Idle AC Offset increases the open-loop idle air control valve
position when the air conditioning clutch is active. When this value is adjusted properly,
the engine speed should not decrease significantly when the compressor cycles ON, and
should not flare high when the compressor turns OFF. When this value is not set correctly,
the IdleFB value may fluctuate significantly when the AC compressor turns on or off.
Min value = 0, Max value = 50
Idle AC Target Offset:
For low-powered engines, it can be helpful to increase the target idle RPM to prevent
stalling while the AC is enabled.
Min value = 0 RPM, Max value = 1000 RPM
Idle Coolant Fan Offset:
When the coolant fan is activated, the alternator will put an additional load on the engine.
Idle AC Offset increases the open-loop idle air control valve position when the coolant fan
function is active. When this value is adjusted properly, the engine speed should not
decrease significantly when the compressor cycles ON, and should not flare high when the
compressor turns OFF.
Min value = 0, Max value = 50
When idle feedback turns on, there is a good chance the engine is decelerating down into
the idle conditions. To allow the engine to settle down to idle gracefully, the idle target
RPM will be temporarily increased by the 'Idle Offset RPM' value, then decay down to the
normal idle target after a short period of time.
Idle Offset RPM:
When idle feedback turns on, the idle target will increase by this amount.
Min value = 0 RPM, Max value = 1500 RPM
Idle Offset Time:
After idle feedback turns on, the Idle Offset RPM will slowly decay down to zero after this
amount of time.
Min value = 0 seconds, Max value = 10 seconds