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Autronica SM4 User Manual

Autronica SM4
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SM4 Manual by MRM-Racing V3.0
88
Calibration represents % contribution that coolant temperature has in determining the
charge temperature, its range is 0 to 100% in 0.5% increments. This calibration is
particularly useful for 2 stroke engines where the charge temperature is almost totally
determined by crankcase temperature.
!! WARNING WARNING WARNING !!
Always re-check mixtures after changes.
Make sure NO warm up trims are active.
Engine should be already mapped.
Recommended to edit this table via "Edit-Window","Charge edit assist" as this will trim
the "Base fuel delivery" table for minimal effect on the already mapped engine. If you do
this manually, you will have to re-map the "Base fuel delivery" on every change to this
table!!.
"Charge temp estimate" is the contribution of coolant & air temperature to make up
"Charge temp". If this table is correct, air and coolant temperature changes (With in
normal warmed up engine running conditions), will not effect the A/F ratio.
Contribution example.
Charge temp estimat=0%(Charge temp=Air temp)
Charge temp estimat=100%(Charge temp=Coolant)
Higher percentage makes "Charge temp" more bias to coolant temp. The higher the load
& rpm, the smaller the "Charge estimate" value should be. This is because the air has
less time to be warmed by the coolant.
NOTE1: Water cooled engines, vary the air temp & trim the "Charge est" so that the
mixture does not change.
Air cooled engines, vary the engine temp (After a little cool down).
NOTE2: "Water cooled engines (Constant water temp)".
Higher air temp=Leaner mixture then INCREASE "Charge est".
"Air cooled engines (Constant air temperature)".
Higher engine temp=Leaner mixture then DECREASE "Charge est"
NOTE3
SM4-Default
LOAD(%)\Engine speed(Rpm)=Charge temp estimate(%)
0 850 7000
0.0 99.6 13.7 7.8
100.0 99.6 13.7 7.8
200.0 99.6 10.2 3.1
M2 Tables axis setup
Any table that can have the x or y axis changed are setup here.
NOTE, Some of these axis may be in sub menus.

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Autronica SM4 Specifications

General IconGeneral
BrandAutronica
ModelSM4
CategoryControl Unit
LanguageEnglish