KMS UEGO CAN controller manual
Version 1.02 6
Place the sensor at least 1 meter from the open end of the exhaust system to avoid
incorrect readings due to outside oxygen.
If possible, do not place the sensor near exhaust slip joints. It’s possible for some
applications to allow air to enter resulting in incorrect readings.
5. Software settings
Attention: After connecting the UEGO CAN controller,
the lambda control settings must be set up correctly.
When using the UEGO CAN controller to operate by CAN
communication, you must set it to KMS UEGO controller
CAN. When operating by serial (RS232) communication,
you must set the controller type to KMS UEGO controller
C-type. See appendix for signal voltages.
For adjustment of the lambda controller type, open the
KMS Motormanagement software, then go to options (F4)
Lambda control Lambda controller type KMS
UEGO controller CAN.
Using two or more CAN controller on the CAN bus, means
that the CAN controllers must be defined in the software.
Therefore you must first update the firmware. Please
contact us for the latest firmware update and
procedures. After updating the firmware set the lambda
controller to the right type, as described above. Next,
switch the ignition off and on. Then go to options (F4)
CAN setting Search for devices. After the devices are
found, you can choose the functions (lambda 1, lambda
2, etc) for the different CAN devices.
6. AFR ratio
Lambda is a measure of the Air to Fuel Ratio (AFR) that is independent of the type of fuel being
used. The lambda value of the new UEGO CAN controller can vary between minimum 0,65 and
maximum 1,5 lambda. This means the Air to fuel ratio for petrol lies between 9,5 and 22,1. The
following table shows the AFR ratio’s for different fuels compared to the lambda value.
