KMS MD35 manual
Version 4.16
35
Set Max Dec. in Fuel:
Here you can input a maximum negative injection correction when the coolant temperature exceeds
a certain setting. This parameter can be used as protection against engine overheating. If
supplementary enrichment has been set in the coolant temperature compensation table for high
water temperatures in order to protect the engine, this parameters of this function can help
prevent the A/F ratio feedback control from curtailing supplementary enrichment.
Min. Fluctuation at warm-up:
Before the A/F ratio feedback control will activate, the oxygen sensor signal first has to fluctuate
with the amplitude set here. This is a way to recognize if the lambda sensor is connected and
working.
Recommended: 0.2-0.5.
Max. time at max. increase:
Here you can input the maximum permissible time for the A/F ratio feedback control to be set to
maximum positive correction. After this time span the lambda-control will shut down.
If set to 0.0 this function will not be active.
Recommendeed time: 3-10 sec.
Max. time at max. decrease:
Here you can input the maximum permissible time for the A/F ratio feedback control to be set to
maximum negative correction. After this time span the lambda-control will shut down.
If set to 0.0 this function will not be active.
Recommendeed time: 3-10 sec.
If Error on A/F-sensor inc. Fuel by:
Here you can input a compensation value (as a percentage) in case of lambda shut down due to
error. This can be used as a protection for the engine against running a too lean mixture.
Recommended value: 3-10%
3.2.4.1.8.3
Target map
The A/F target map constitutes the same map structure used in the parameter maps for
fuel/ignition. The values input here constitute the target A/F ratio. The A/F ratio feedback or
lambda control will strive in each map position to control the A/F ratio towards this target value.
This means that you can drive with minimized consumption in the partial load range and fulfill the
requirements of emission laws. Towards a full load a richer A/F mixture can be automatically
delivered, for the benefit of power and cooling capacity of the engine. The adaptation of values in
the target map works in the same way as with the main maps (ignition/injection). When you input 0
in a frame, the A/F ratio feedback control will not be active in the relevant range.
In the figure on the left side on the next page is a recommended target map shown for a N/A
engine. Next to that (on the right) is a recommended target map shown for a turbocharged engne.
Содержание MD35
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