AiM MXL, EVO3 User Manual
LCU–ONE CAN connected to
MXL-EVO3 Pro/Pista
User Manual
LCU-ONE CAN connected to MXL and EVO3
User Manual
Release 1.05
INDEX
Chapter 1 – LCU-ONE .................................................................................................... 2
1.1 – LCU ONE part number ....................................................................................................... 2
Chapter 2 – LCU-ONE and Lambda probe mounting.................................................. 3
Chapter 3 – Connection with MXL – EVO3 Pro/Pista .................................................. 4
3.1 – Connection of LCU-ONE CAN ........................................................................................... 4
3.2 – Connection of LCU-ONE CAN + GPS MODULE .............................................................. 6
Chapter 4 – Configuration on MXL – EVO3 Pro/Pista ................................................. 7
Chapter 5 – Data Visualisation on MXL/EVO3 ........................................................... 12
5.1 – Data Visualisation on MXL .............................................................................................. 12
5.2 – Data Visualisation on EVO3 ............................................................................................ 12
Chapter 6 – Data Analysis with Race Studio Analysis ............................................. 13
Appendix – Technical drawings ................................................................................. 14
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LCU-ONE CAN connected to MXL and EVO3
User Manual
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Chapter 1 – LCU-ONE
Release 1.05
LCU-ONE is a lambda controller unit for wide band BOSCH LSU 4.9 lambda probe. It
fits petrol (2 and 4 strokes), diesel and methane engines as well as alcohol based fuel
engines. It is intended to check lambda probe proper working as well as to transmit the
Air/Fuel Ratio values providing MXL/EVO3 with lambda values through the CAN bus.
Lambda value is defined as: LAMBDA= (A/F)/(A Stoichiometric /F Stoichiometric)
where:
A = incoming parts of air;
F = parts of petrol the carburettor injects into the engine;
A Stoichiometric / F Stoichiometric = parts of air needed to burn Stoichiometric F;
Speaking about gasoline, for example, it needs 14,57 parts of air to completely burn a
part of gasoline, obtaining Lambda value = 1 read by the probe.
LCU-ONE controller can detect lambda values in a range of 0.65 to 1.6 (free air).
It is reminded that LAMBDA value lower than 1 means a rich mixture, while
LAMBDA value higher than 1 means a lean mixture.
It is necessary to heat the wide band Lambda probe so that it works properly and is not
poisoned with exhaust gas. LCU-ONE precisely manages the probe heater so to keep
temperature value in the optimum working range.
Warning: during its working period, Lambda probe used with LCU-ONE becomes
very hot (around 700-800 °C that is 1292-1472 °F); it is thereby necessary
AVOIDING:
• touching it.
• placing it in contact with flammable stuff or fuel.
Warning:
disrespect of these precautions can cause shocks, burnings or explosions.
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1.1 – LCU ONE part number
LCU-ONE Kits part numbers are:
• Controller LCU-ONE (complete kit with Lambda probe) X08LCU03K0
• Lambda probe BOSCH LSU 4.9 X05LSU490
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LCU-ONE CAN connected to MXL and EVO3
User Manual
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Chapter 2 – LCU-ONE and Lambda probe mounting
Release 1.05
LCU-ONE controller should be installed in a flat location and far from heat sources. It
should be mounted steady using the supplied bracket.
The wiring has to be arranged so to avoid it passing near to heart sources.
BOSCH LSU 4.9 Lambda probe should be installed on the vehicle exhaust pipe using a
specific adaptor that comes with the kit and should be welded on the same pipe. The
probe should be sufficiently near to the engine.
Probe working temperature should not exceed 900°C (1652°F) and it should not be
exposed to the free flame coming from the exhaust system.
Probe installation angle should be of at least 10° to avoid liquid condensation stuff to
come in contact with the probe, polluting it.
Once the probe is installed, pay attention not to let the cable pass near to excessive
heat sources (the exhaust pipe for example).
Bosch LSU 4.9 probe auto-calibrates: no calibration is then required to the user.
Solvents or additives should not be used to clean the probe connector. To protect
the probe we would suggest to remove it when cleaning the vehicle to avoid
polluting the probe with detergents.
It is reminded to never switch the vehicle on with Lambda probe installed and not
connected to a correctly working LCU-ONE controller: a probe not heated and exposed
to exhaust gas would be irremediably damaged.
N.B. BOSCH LSU 4.9 Lambda probe has been designed to be used with unleaded
or diesel engine. It can be used with other kind of engines too, but its duration
needs to be verified by the user with specific tests.
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LCU-ONE CAN connected to MXL and EVO3
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Chapter 3 – Connection with MXL – EVO3 Pro/Pista
Release 1.05
LCU-ONE CAN can be connected to all MXL and to EVO3 Pro/Pista.
Warning: connect LCU-ONE CAN to MXL or EVO3 Pro/Pista when both are OFF.
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3.1 – Connection of LCU-ONE CAN
To connect Lambda controller only, the connection scheme is the one showed above.
To protect Lambda Controller we would suggest to insert a 10 A fuse for each Controller
in series between external battery and Lambda controller.
LCU-ONE CAN is to be powered – like the logger – by the engine master switch.
As far as connection with the loggers is concerned, refer to each system user manual.
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