Main Data Labels To Configure For Engine Start Up - Bosch MS 6 Manual

4.1.5
Bosch Motorsport
air path (air temperature, ambient pressure) are therefore performed to this value
rl. Based on this central value most of the relevant ECU signals are calculated,
first and foremost injection and ignition.
Due to this constellation changes in the air path are centrally considered for all
following functions, independently whether they are caused by ambient influen‐
ces, mechanical changes of the intake system or even a change from alpha/n‐
system to p/n‐system.
Using this rl value, a relative fuel mass rfm is constructed. For an operating point
of rl = 100 %, a fuel amount of 100 % is needed, if the desired Lambda = 1. All
corrections to the desired fuel quantity like start enrichment, warm up factor
transient compensation, but also the desired Lambda value and the correction
factor of the Lambda control are considered as an adjustment of this relative fuel
mass. I.e. all corrections are still made independently of the size and other speci‐
fications of the injectors.
Next step is the conversion of the relative fuel mass to a desired injection time te.
Here the engine´s displacement, the fuel flow through the injector and influences
of the fuel pressure are considered.
Finally the actual duration of the control pulse ti is calculated, considering pick‐
up delays of the injectors, fuel cutoff (e.g. overrun cutoff, speed limiter, gear cut)
and cylinder individual correction factors. Please refer also to the system over‐
view in the Function Description ECOV.

Main Data Labels to configure for Engine Start up

Main Data Labels to configure for engine start up
MP_MIXCORR(2)
MIXCORR_APP
CWPRAILCOR
FINJ_WARMUP
MP_LAM_MP1
ECU MS 6
Prepare Data Base | 4
Mixture correction, set to 1.0 for startup
Global factor for mixture correction, set
to 1.0 for the begin of startup
If a correction by fuel pressure is inten‐
ded, set = 1. In this case please set
PRAILREF according to the referenced
fuel pressure. Also refer to
MP_P22MOD. Usually the predefined
values are suitable. If unsure, set
CWPRAILCOR to 0 for first startup.
Correction via engine coolant tempera‐
ture. Usually the predefined values are
suitable. Ensure, that for coolant tem‐
peratures driven on your dyno during
calibration, no warm up factor applies
(i.e. FINJ_WARMUP is 0.0 for this tem‐
perature).
Desired Lambda value, valid for map
position 1. According to your expecta‐
tions, e.g. 0.9. For alternative positions
of your map switch the maps
MP_LAM_MP2 (3) or (_PACE) apply,
therefore ensure correct switch position
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