AiM LCU-One Analog User Manual ver 1.02
LCU–ONE Analog
User manual
LCU-ONE Analog
User Manual
Release 1.02
INDICE
Chapter 1 – LCU-ONE Description...............................................................................2
Chapter 2 – LCU-ONE and Lambda probe mounting..................................................3
Chapter 3 – Configuration.............................................................................................4
3.1 – LCU-ONE Analog standard configuration ..................................................4
3.2 – LCU-ONE Analog custom configuration.....................................................7
3.2.1 – Preliminary operation................................................................................................ 8
3.2.2 – Configuring Lambda controller................................................................................ 8
3.2.3 – The keyboard............................................................................................................ 11
3.2.4 – Informative panels................................................................................................... 11
3.2.5 – The analog output graph......................................................................................... 12
Chapter 4 – Online values from Lambda controller..................................................13
Appendix – Part Number and technical drawings ....................................................14
“A” – Part number of LCU-ONE Analog............................................................14
“B” – Technical drawings ..................................................................................14
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LCU-ONE Analog
User Manual
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Chapter 1 – LCU-ONE Description
Release 1.02
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 carburetor 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.
Wide band Lambda probes need to be heated to work properly and not poisoned with
exhaust gas; LCU-ONE controller precisely manages the probe heater so to keep
temperature value in the optimum working range.
Lambda probe used with LCU-ONE controller becomes very hot (around 700-800
°C, 1292-1472 °F) during its working period, it is thereby necessary AVOIDING:
• touching it.
• placing it in contact with flammable stuff or fuel.
Please note:
disrespect of these warnings can cause shocks, burnings or explosions.
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LCU-ONE Analog
User Manual
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Chapter 2 – LCU-ONE and Lambda probe mounting
Release 1.02
LCU-ONE controller should be installed in a flat location and far from heat sources; it
should be mounted steady using the suited bracket.
The wiring has to be arranged so to avoid it passing near to heat sources.
LCU-ONE is to be powered by the engine master switch.
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 by the user.
Solvents or additives should not be used to clean the probe connector. To protect
the probe we would suggest to remove it from the vehicle 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 tested by the user.
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LCU-ONE Analog
User Manual
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Chapter 3 – Configuration
Release 1.02
To work properly LCU-ONE Analog needs to be configured. The configuration can be
made both using Race Studio 2 and using Lambda Configurator the free software included in the kit - properly designed and developed by AIM to configure this device.
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3.1 – LCU-ONE Analog standard configuration
Configuration through Race Studio 2 (standard) is possible only if calibration curve
default points – 1.95=0.65 and 4.8=1.6 – have not been modified.
To configure LCU-ONE Analog with Race Studio Configuration follow this procedure:
• run the software;
• press “AIM system manager” button on the left vertical keyboard;
• select the logger LCU-ONE Analog is connected to
• activate “Channels” layer
• select the analogue channel to set the probe on
• double click on “Sensor type” column corresponding to that channel and
select “AIM Lambda LCU-ONE 1.65 – 1.6 Lambda)” option as shown here
below; click out of the cell to confirm the choice.
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