Integrator
Time constant of signal integrator.
-Higher value gives better immunity to noise and lowers Knock sensor value
parameter. Too high a value can cause light engine knock to be filtered out.
-Lower values increases engine knocking sensitivity but it also increases
susceptibility to noise. This yields a higher Knock sensor value parameter
It's advised to set values between 100µs and 200µs
Sampling
Sampling parameters allows you to configure when the knock sensor signal is processed by the
EMU. To reduce interference from noise, the knock sensor signal is only processed during the
defined Knock window. The knock window represents the area where engine knock is most likely
to occur. Because it is possible to install more than one knock sensor, it is necessary to configure
which knock sensor channel should be processed for each ignition event.
PARAMETER DESCRIPTION
Knock window start Crankshaft rotation angle after TDC when Knock window starts
Knock window
duration
Knock window length in crankshaft rotation degrees
Ignition event X knock
input
Assign a knock sensor channel to ignition event X
Engine noise
Engine noise 2D table is used to define noise level of normal engine operation across the whole
RPM range. If Knock sensor value exceeds Engine noise from table, it is interpreted as engine
knocking. This difference is named Knock Level. Higher Knock Level means more severe engine
knock.
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