Initial Steps; Basic Path Of Injection Calculation - Bosch MS 6 Manual

4 | Prepare Data Base
4.1.3
4.1.4
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Main Data Labels to configure for crank- and camshaft wheel
CAM_NEG_EDGESx
ANG_CAM_CATCHx
SYNC_CAM

Initial Steps

The following data must be set initially to start injection calibration for the first
time.
Main Data Labels to configure for firing order and engine design
DISPLACEMENT
CYLBANK
CYLNUMBER
CYLANGLE
CWINJMODE
QSTAT
TDTEUB
TECORPRAIL

Basic Path of Injection Calculation

The ECU MS 6 is a so called physically based system. This means in particular that
corrections are made according to their origin influence (e.g. air temperature,
fuel pressure etc.). For it, the initial engine load signal (throttle angle ath) or the
engine charge signal rl (relative load) is defined as 100 %, if the cylinder is filled
with air of 20°C and 1013 mbar ("standard condition"). Corrections related to the
ECU MS 6
Position [°CRK] of negative camshaft
edges (online measurement, see chan‐
nels cam_neg(pos)_edges_xxx)
Max. deviation of cam edges angles al‐
lowed
Camshaft signal used for engine syn‐
chronization
Displacement of all cylinders
Cylinder allocations bank 1 or bank 2
Example typ. 8 cyl. engine:
Cylinder 1 2 3 4 5 6 7 8 9 10 11 12
CYLBANK 1 1 1 1 2 2 2 2 0 0 0 0
Engines with one Lambda sensor (e.g.
4‐in‐a‐row) run as 1‐bank‐systems
Set CYLBANK to 1.
Number of cylinders
Angle of cylinder TDCs relative to refer‐
ence mark (RM → TDC)
Selection of injection mode
Static valve quantity for n‐heptane in
g/min (injectors are typically measured
with n‐heptane)
Battery voltage correction low‐pressure
injection. Characteristics can be reques‐
ted at the injector valve manufacturer.
Battery voltage correction high‐pres‐
sure injection. Characteristics can be re‐
quested at the injector valve manufac‐
turer.
Bosch Motorsport