Cam #2 - ECU Master EMU User Manual

CAM #2

CAM#2 trigger is required to control variable valve timing on the second camshaft. It is used for
calculating cam angle in relation to crank shaft position (it is not used for synchronising engine
phase). EMU supports HALL/ Optical and VR sensors.
We suggest that you use Prim Trig Tooth Range CAM#2 decoder. Other
PARAMETER
Sensor type
Enable pullup
Trigger type
Trigger edge
Min tooth
Max tooth
On the example below, the correct tooth range for CAM#2 trigger edge marked in purple is from 12
to 24. A wide range allows for the change in camshaft position without the risk of losing correct
synchronization. Too wide a range can cause the other CAM#2 edge to be used. On the log it will
appear as an abrupt change in camshaft position (CAM#2 Angle channel).
ATTENTION !
decoders are present for backward compatibility.
DESCRIPTION
Type of the sensor connected to CAM#2 input. For Hall/Optical sensors
option Enable pullup is required
Enable 2K pullup to +5V on CAM#2 input. This function is used for Hall
and Optical sensors that have open collector outputs
Supported CAM#2 decoders. We suggest using the Prim Trig Tooth
Range decoder
Trigger edge of input signal used for decoding trigger pattern.
The minimal value of tooth range of primary trigger toothed wheel. The
incoming CAM#2 signal edge in this range will be used for calculating
camshaft angle
The maximum value of tooth range of primary trigger toothed wheel. The
incoming CAM#2 signal edge in this range will be used for calculating
camshaft angle
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