AiM MXL QM, EVO3 QM User Manual
LCU-ONE CAN connected to
MXL QM and EVO3 QM
User Manual
LCU-ONE CAN connected to MXL QM and EVO3 QM
User Manual
Release 1.04
INDEX
Chapter 1 – LCU–ONE ....................................................................................................... 2
1.1 – Part number ........................................................................................................................................ 2
Chapter 2 – LCU–ONE and Lambda probe mounting ..................................................... 3
Chapter 3 – Connection to MXL – EVO3 QM ................................................................... 5
3.1 – LCU-ONE CAN Connection ............................................................................................................... 5
3.2 – LCU-ONE CAN + GPS MODULE Connection ................................................................................... 7
Chapter 4 – Configuration ................................................................................................. 8
4.1 – Select configuration ........................................................................................................................... 9
4.2 – Channels ........................................................................................................................................... 10
4.3 – System configuration....................................................................................................................... 11
4.3.1 – Configuring MXL QM .................................................................................................................. 11
4.3.2 – EVO3 QM .................................................................................................................................... 13
Chapter 5 – Configuration on MXL QM – EVO3 QM ...................................................... 14
Chapter 6 – Data Visualisation on MXL QM/EVO3 QM .................................................. 18
6.1 – Data Visualisation on MXL QM ....................................................................................................... 18
6.2 – Data Visualisation on EVO3 ............................................................................................................ 18
Chapter 7 – Data Analysis with QMAn ........................................................................... 19
Appendix – Technical drawings ..................................................................................... 20
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LCU-ONE CAN connected to MXL QM and EVO3 QM
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Chapter 1 – LCU–ONE
Release 1.04
LCU-ONE is a lambda controller unit for the 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 Pro/Pista QM (from here onwards MXL QM) and
EVO3 Pro/Pista QM (from here onwards EVO3 QM) with lambda values through the CAN
bus.
Lambda value is defined as: LAMBDA =(A/F)/(A/F) Stoichiometric
Where:
A= incoming part of air;
F= parts of petrol the carburettor introduces in the engine;
A / F Stoichiometric = parts of air needed to burn Stoichiometric F;
Gasoline, for example, 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 from 0.65 to 1.6 (free air).
It is reminded that LAMBDA values lower than 1 means a rich mixture, while
LAMBDA values higher than 1 means a lean mixture.
Wide band Lambda probe 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 within the optimum working range.
During its working period, Lambda probe used with LCU-ONE controller becomes very hot
(around 700-800 °C, 1292-1472 °F); it is thereby necessary AVOIDING:
• Touching it;
• Placing it in contact with flammable stuff or fuel.
Please note:
disrespect of these precautions can cause shocks, burnings or explosions.
8
1.1 – Part number
Kits part number are:
• Controller LCU-ONE (Complete kit with Lambda probe) X08LCU03K0
• BOSCH LSU 4.9 Lambda probe XO5LSU490
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LCU-ONE CAN connected to MXL QM and EVO3 QM
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Chapter 2 – LCU–ONE and Lambda probe mounting
Release 1.04
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 be far from heat 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), neither 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.
When the probe has been installed, do not let the cable pass close to heat sources (the
exhaust pipe for example).
BOSCH LSU 4.9 probe auto-calibrates: no calibration is then required.
Solvents or additives should not be used to clean the probe connector. We would thereby
suggest to remove it from the dragster when cleaning the vehicle, to avoid probe pollution
caused by detergents.
REMINDER: 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.
Attention: BOSCH LSU 4.9 Lambda probe has been designed to be used with
unleaded or diesel engines. It can be used with other kinds of engine too, but its
duration needs to be verified by the user with specific tests.
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LCU-ONE CAN connected to MXL QM and EVO3 QM
User Manual
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We suggest to install Lambda controller and the related probe as shown in the following
pictures.
Moreover we advise to install a 10 Ampere fuse in series between the external battery and
lambda controller.
We would suggest to install the probe in the exhaust pipe (see picture below):
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LCU-ONE CAN connected to MXL QM and EVO3 QM
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Chapter 3 – Connection to MXL – EVO3 QM
LCU-ONE CAN can be connected to all MXL and EVO3 QM.
Warning: connect LCU-ONE to MXL QM or EVO3 QM OFF.
9
3.1 – LCU-ONE CAN Connection
User Manual
Release 1.04
Lambda controller connection scheme is showed above.
To protect Lambda Controller we suggest to insert one 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, please refer to those systems user
manuals.
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LCU-ONE CAN connected to MXL QM and EVO3 QM
User Manual
Release 1.04
In case more than one Lambda Controller are to be connected, for a better engine control
(one probe for each engine bank or even one probe for each cylinder), peripherals
connection scheme is the following:
Each Lambda controller has to be connected to the battery.
We would suggest to protect each Lambda controller with a 10 A fuse.
When MXL/EVO3 QM is switched off all peripherals are automatically switched off.
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