Renault MR18 F3R 2021 User manual

MR18 F3R Engine user manual V03, February 2021 Page 1sur 29
MR18 F3R ENGINE
USER MANUAL 2021

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Introduction
The engine has been designed specifically for use in F3R single-seater applications.
This Engine Installation and Operation Manual has been developed and written for the exclusive use
of F3R racing teams. It is therefore, written with these professional organizations in mind and as such
may not contain the necessary detail and safety information that may be required for non-professional
teams to perform the use and operation of the engine properly or safely.
The use of an exclamation point within a yellow triangle
indicates to the user that important installation, operating
and maintenance instructions must be followed.

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Contenu
1. General information........................................................................................................................ 5
1.1 Engine area.................................................................................................................................... 5
1.2 Power curve................................................................................................................................... 5
1.3 Torque curve ................................................................................................................................. 6
2. Engine delivery ................................................................................................................................ 6
2.1 Engine packaging........................................................................................................................... 6
2.2 Security seals................................................................................................................................. 7
2.3 Engine identification...................................................................................................................... 8
3. Software .......................................................................................................................................... 8
3.1 Magneti Marelli Software.............................................................................................................. 8
3.2 SYSMA............................................................................................................................................ 9
3.3 TIRE CHOISE................................................................................................................................. 10
3.4 Wintax ......................................................................................................................................... 11
4. Electronic........................................................................................................................................... 11
4.1 ECU .............................................................................................................................................. 11
4.2 ELB............................................................................................................................................... 11
4.3 Computer setting......................................................................................................................... 12
4.4 Electronic diagnostic ................................................................................................................... 12
4.5 Engine diagnostic......................................................................................................................... 13
5. Engine usage...................................................................................................................................... 14
5.1 Oil system .................................................................................................................................... 14
5.2 General:....................................................................................................................................... 14
5.3 Maintenance after each event:................................................................................................... 14
5.4 Engine Wiring Overview:............................................................................................................. 15
5.5 Engine sensors installed on chassis:............................................................................................ 15
5.6 Lambda sensors important note: ................................................................................................ 16
5.7 Barometric pressure sensor important note:.............................................................................. 16
5.8 Air filter........................................................................................................................................ 16
5.9 Frequency of maintenance.......................................................................................................... 17
6. Starting procedure......................................................................................................................... 17
6.1 Before starting............................................................................................................................. 17
6.2 Pedal/throttle/ewastegate learning............................................................................................ 19
Pedal sensor voltages range.......................................................................................................... 19

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Pedal/throttle learning procedure: Duration approximately 30 seconds..................................... 19
6.3 Engine warm procedure.............................................................................................................. 20
7. Engine usage...................................................................................................................................... 21
7.1 General precautions.................................................................................................................... 21
7.2 Operating temperatures and pressures...................................................................................... 21
Coolant temperature:.................................................................................................................... 21
Engine oil temperature:................................................................................................................. 21
Engine oil pressure ........................................................................................................................ 22
7.3 Engine speed limiter.................................................................................................................... 22
8. Engine maintenance...................................................................................................................... 23
8.1 Maintenance table ...................................................................................................................... 23
8.2 Air filter cleaning procedure........................................................................................................ 23
8.3 Spark plug replacement procedure............................................................................................. 24
8.4 Oil filter replacement procedure................................................................................................. 25
8.5 Clutch tightening procedure: ...................................................................................................... 25
8.6 Fly wheel tightening procedure: ................................................................................................. 25
9. Contact .............................................................................................................................................. 26
Appendix 1............................................................................................................................................. 27

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1. General information
1.1 Engine area
1.2 Power curve
Engine area included following FIA regulation:
-Engine
-Engine loom
-ECU
-Barometric pressure sensor
-Beacon (car and track)
-Complete air box and air filter
-Flywheel
-Clutch
-Starter
-Lambda sensor
-Exhaust temp sensor
Engine area exclude
-Fuel piping
-Intercooler (air and water)
-Bellhousing
-Slave cylinder
-Downpipe
-Air-cooler piping

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1.3 Torque curve
2. Engine delivery
2.1 Engine packaging
All MR18 F3R engines are delivered in their specific transportation wooden box. Use exclusively these
boxes for travels.

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A complete spare engine is considered as pictures below. Engine must stay in that stat for rebuild or
dyno-check in ORECA.
2.2 Security seals
All engines, new or rebuilt, are delivered with 1 electronic seals and 9 aluminum seals.

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2.3 Engine identification
Engine number is written on the ELB plat fixation on the top of the plenum.
3. Software
3.1 Magneti Marelli Software
Wintax basic and Sysma basic will be delivered with new car. Wintax is software for data
downloading and analyses. Sysma is software for ECU calibration.
One Wintax basic and one sysma basic will be delivered per new car. Both basics software are
activated by Password (one per computer).
Example of Password request:
Send screenshot to: Olivier AIRAULT [e-mail] to have Password back.

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3.2 SYSMA
1- Open Sysma basic
2- Open Project FR19_12.11.1.4_2020-11-27_TEAM_V10
3- Select “Control” when power is turned ON. “Control” will come green. Note that it can take a bite
of time to reach the connection.
4-Then you can see all engine sensors values and adjust Gear ratios and shifting LEDs.
To read the value from ECU press F6 or Read table
To write a new value in the ECU press F7 or Write table

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3.3 TIRE CHOISE
On the new Sysma project, you are about to choose on “FR19_GEAR” window the tire supplier
(HANKOOK / MICHELIN / PIRELLI). This parameter will adjust wheels circumferences.
Example:
The good tire must be set to have the good car speed on your devices and the good pitlane limiter
speed.
Tire selector HANKOOK/MICHELIN/PIRELLI
Tire set in the ECU

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3.4 Wintax
Wintax4 user manual will be delivered with Wintax software. Channels information can be found on
APPENDIX 1.
4. Electronic
4.1 ECU
Engine management is done by ECU Magneti Marelli SRG140.
4.2 ELB
Every engine is equipped with ELB (Magneti Marelli). This device will record strategic information
during engine life.
ELB must be connected full time. In case off disconnection,
Ignition limiter applied will be 3750 RPM.

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4.3 Computer setting
ECU communication is done by the TATUUS Ethernet communication cable.
First, you must change computer IP address (IPV4) as following and switch of firewall & wifi.
IP: 192 . 168 . 111 . 75
Mask: 255 . 255 . 255 . 0
4.4 Electronic diagnostic
In case of sensor issue, you must check Vref supply. With any short circuit on loom or sensors, the 5V
will drop. All sensors in the same Vref supply will wrong.

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Vref distribution:
4.5 Engine diagnostic
Vref 1 Vref 2 Vref 3 Vref 4
Rail-P E-WasteGate Accelero F Brake-P
Throttle P/2-2 FL Damper R Brake-P
Oil-P P/2-1 T/2-1 FR Damper Steering Pos
Pedal A Gear-Pos RL Damper Baro-P
Pedal B Clutch-P RR Damper N-Turbo
CRANK
CAM IN
CAM EX
Diag Signification
1 Std 1
4 DBW
6 p21
7 Pit
8 nTurbo
11 Pedal security
12 Kill
14 ELB
17 Engine security
Diag Signification Diag Signification
2 Crank 1 0 Idle
3 Crank 2 3 Up extract time out
4 Cam 1 4 Up extract
5 Cam 2 5 Up engage Tmo
6 Up engage
8 Up lock
Diag Signification 10 Up recenter
0 Stall 15 Up Failed
1 Cranking 19 Dn extract Tmo
2 Running 20 Dn extract
21 Dn engage Tmo
22 Dn engage
Diag Signification 24 Dn lock
0 Run 26 Dn recenter
1 Killed 31 Dn failed
Diag Signification Diag Signification
0Ok 0 Stall
1 Off 1 Moving
2 Fault 2 Search
3 Conf
4 Phasing
5 Phased
Comments
Ignition limiter active
Wheel speed diag
Engine security. Oil pressure is less than 1 Bar for 2 seconds or Water temp is higher than 120°C for 3 seconds
ELB default. ELB connection is lost
Ignition switch off
Pedal security. Throttle pedal> 70% + P brake> 40 Bars for 150 msec = engine kill
Turbo speed default. Turbospeed too high
Engine synchronization
Engine state
Kill status
Gear State
Synchronization state
Pit limiter active
P boost default. Boost pressure too high
Throttle default. Delta throttle position coherency between track 1 and track 2 >15% for 250ms
Limiter OK

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5. Engine usage
5.1 Oil system
Only Castrol Edge Titanium 10W60 can be used in the MR18 F3R
engine.
Oil filter is changed also after the bench breaking-in and power curves. Make sure to clean carefully
all oil pipes and oil tank (in bellhousing) before you mount a new or rebuilt engine in the car.
5.2 General:
Extreme care must be taken with the routing of all wiring looms
and positioning of equipment to avoid damage to wiring insulation
or over-stressing of internal cables.
Prevent the engine loom and the ECU loom from unlikely conditions that could cause damages:
- do not crush the loom.
- avoid friction on sharp or exposed edges.
- use preventive devices such as rub wraps where it is necessary.
- design a proper thermal insulation in order to protect the alternator and its loom.
- make sure that all electronic devices are properly fixed and cannot be damaged by vibrations.
5.3 Maintenance after each event:
-check the loom and all connectors.
- check all power connections on alternator, electric starter, chassis ground and power.

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5.4 Engine Wiring Overview:
5.5 Engine sensors installed on chassis:
Your car is equipped with engine sensors installed on chassis, make sure they are in a good status at
all time:
- Lambda Bosch sensor
- Barometric pressure sensor.
1 ECU 11 E WASTEGATE 21 HP PUMP
2 P ATMO 12 COIL 3 22 CAM EX
3 CHASSIS 13 ELB 23 N TURBO
4 GCC 14 COIL 4 24 P 2/2
5 INTERCO 15 CAM IN 25 INJ / P RAIL
6 GND 16 STARTER 26 T EXHAUST
7 ELV IN (BLUE) 17 T GEARBOX 27 LAMBDA
8 ELV EX (RED) 18 PT 2/1 28 P OIL
9 COIL 1 19 T WATER 29 T OIL
10 COIL 2 20 THROTTLE 30 CRANK

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5.6 Lambda sensors important note:
Please ensure that a small amount of Copper grease is applied to the threads prior to fitting.
The Lambda Sensors fitted to each exhaust tail pipe are very
sensitive items and therefore, care must be taken to ensure that
they are not damaged.
5.7 Barometric pressure sensor important note:
Never install the sensor with the
inlet hole oriented to the top.
5.8 Air filter
Cotton air filter is an important and sensitive part. On dirty circuits, ensure to use exclusively new filter.
Keep in mind that a new filter is only pre-oiled; specific COTTON air filter oil (distributed by K&N, Green,
JR, DNA, others…) must be added on a new air filter (each side) before to install it.
OIL FOR FOAM AIR FILTER IS STRONGLY PROHIBITED.
Air filter can be cleaned and re-used. It is important that your air filter be clean (or changed) regularly
to ensure an optimum engine performance and reliability. This interval can be greatly influenced by
your environment and driving conditions. In dusty areas, you may need to clean the filter more often.
Please refer to section 6.2 of the engine manual for air filter cleaning procedure. ORECA recommends
to customers to have a minimum of 2 spare air filters and a complete air filter cleaning kit.

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5.9 Frequency of maintenance
- Before each meeting, your air filter must be new (or cleaned)
- Clean it before the race (and clean it after the race)
- Dry your air filter after a wet practice / race
- Check your air filter if the car went in the gravel
- Change your air filter when it looks too dirty / old, or when the cotton does not still cover
the whole mesh of the air filter (if you see some holes in the mesh).
6. Starting procedure
6.1 Before starting
Before starting, you must ensure the following points:
- Coolant and engine oil at a correct level.
- Cold engine ONLY: open the water circuit up to 50°C water temperature.
- Proceed to Pedal/throttle/eWastegate learning before the first start of each meeting, or after any
intervention on the throttle, pedal or Wastegate.
-Check all temps and pressure sensors.

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-ELB state must be “Link ON” and limiter active “Std1”. Limiter apply will be 6750 RPM.
-check sensors and injectors supply. All Vrefs must be close to 5.000 Volts and Vtank must be close to
67 Volts.

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6.2 Pedal/throttle/ewastegate learning
Pedal sensor voltages range
Pedal voltages must be in the below voltage ranges to able to success the learning.
Off pedal (0%)
Full pedal (100%)
Min value
(Volts)
Max value
(Volts)
Min value
(Volts)
Max value
(Volts)
Pedal sensor
RAW 1
1
3
3,1
4,9
Pedal sensor
RAW 2
1,8
4
0,2
1,75
Pedal/throttle learning procedure: Duration approximately 30 seconds
1) Power off the car and press full throttle pedal while main switch is off.
2) Keep full throttle pedal, Turn ON main switch and keep full throttle pedal position for 6-7 seconds.
3) Release the throttle pedal (= remove completely the foot from it) and wait for the end of the
automatic pedal/throttle learning procedure (motorized throttles are going successively to MIN –>
MAX –> IDLE positions).
4) Make power cycle when learning is succeeded
It is possible to hear the motorized throttles during calibration. If
nothing happens, you must proceed to the complete
pedal/throttle learning procedure again.

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6.3 Engine warm procedure
- Ensure Neutral gear is selected
- Ignition OFF, use starter button to make the oil pressure increase to 2bar (cold oil) or 0.5bar (hot oil).
Never use starter button longer than 5 seconds in the way to preserve the electric starter.
- The engine is now ready for starting
- Ignition ON
-When engine is running, Engine State is “RUNNING” and SyncState is “Phased”. In case of starting
issue, you can check SyncState. If this value is not “Phased” under cranking you can have issue with
crank our cam sensors
-Engine is running
Verify Oil Pressure Immediately after Start (4 –6 Bars).
- Check VVT errors. VVT1 is Inlet camshaft and VV2 is Exhaust camshaft. Both VVT err must be close to
0° when engine is running.