The Challenger8 is designed for those who want to conquer thanks to an ultra modern ECU. It allows managing 1 to 4-cylinder engines in sequential injection and static ignition, and 6 and 8-cylinder engines in semi-sequential injection and lost sparks ignition.

Thanks to its high performance microprocessor (calculates in 32 bits while many other brands calculate in 8 or 16 bits) the Challenger8 allows to get astonishing accelerations.

Several tunings can get along for the same engine (multimapping). The desired tuning can be selected while running, by a rotator or a dashboard switch, allowing the adaptation to the driving conditions, a super boost of the engine if necessary.

Selection of hard cut or soft cut RPM limiter. The hard cut limiter allows a modification of ignition advance and injection time for a machine gun limiter with burst of flames.

 Complete management of the flexfuel with reading of Ethanol content sensor
• Sensor reading inhibition if the fuel flow passing through the sensor is insufficient for a correct reading of the Ethanol content
• Correction of injected quantity according to Ethanol content, engine t°, engine load and engine speed
• Ignition advance correction based on Ethanol content, engine t°, engine load and engine speed
• Specific injected quantity at engine starting according to the Ethanol content and the engine t°
• Specific ignition advance at engine starting according to the Ethanol content and the engine t°
• Specific richness target according to the Ethanol content and the engine load
• Specific turbo pressure and turbo speed targets according to the Ethanol content
• If you need it, Skynam can provide the Ethanol content sensor

A full self-learning function allows the ECU to auto tune its injection time map when equipped with a wide band Lambda sensor (needs a professionnal license, or on option with standard license).

TECHNICAL PRESENTATION

CONFIGURATION
• 4 injection channels (sequential injection, semi sequential or direct)
• 4 ignition channels (static ignition or lost spark)
• 8 fully programmable auxiliary outputs (including flies by wire management, proportional camshafts drift, FISA regulation fuel pump, …)
• 1 RPM sensor selectable Hall effect or inductive on crankshaft flywheel
• 1 Main phase sensor selectable Hall effect or inductive on camshaft flywheel
• 1 Auxiliary phase sensor effect or magneto-resistive on camshaft flywheel shared with the speed inputs
• 1 speed inputs Hall effect or magneto resistive, number of teeth from 1 to 128, shared with the auxiliary phase
• 1 internal power supply tension measurement
• 3 resistive inputs NTC-PTC-PT200 or logical
• 4 analogic 0-5 volts inputs
• 4 selectionnable analogic-resistive inputs

HELP IN THE SETTING
For a fast tuning, the maps of engine start, engine temperature rise, accelerating pumps and atmospheric altimetric pressure and intake t° corrections are preset for the ignition advance as for the injection.
The PID of devices commands (motorized throttle, turbo, …) are also preset.

ADVANCED FUNCTIONS OF ENGINE MANAGEMENT
Very advanced engine management functions allow a total optimization of the engine working:
• Full self-learning of injection time map with display of learning instantaneous quality
• Cylinder by cylinder correction of injection and ignition
• Operation in two injection rails with gradual shifting from one to the other
• Proportional positioning of camshafts (VVT)
• Richness correction by Lambda sensor (wideband or 0-1 volt)
• Altimetric and/or dynamic pressure correction
• Motorized throttle management
• Multi fuels and additive management
• Complete management of flex fuel (Ethanol)

ADVANCED FUNCTIONS OF RPM LIMITER AND LAUNCH PROCEDURE
• Rpm limiter on injection or ignition or both together or one after the other
• Soft cut or Hard cut limiters selectable
• Several launch limiter and race limiters, selectable by a rotator (rotary switch) at the vehicle board
• The different launch limiters allow to adapt to the road grip conditions
• Tunable gradual limiter raising from launch limiter to race limiter to avoid wheels slipping at vehicle take-off
• Injection time and ignition advance correction during launch procedure to get high turbo pressure for a cannonball take off
• Soft cut limiter: gradual cylinder per cylinder cutoff, and turning (always begins the cutoff sessions with a different cylinder to avoid always heating the same cylinder)
• Hard cut limiter: all the cylinders are cutoff at the same time, with tunable hysteresis to uncut the cylinders with tunable modification of ignition advance and injection time for a machine gun limiter with burst of flames

ADVANCED FUNCTIONS OF GEARBOX MANAGEMENT
Sequential gearbox management or specific management of robotized gearbox or road gearbox.
• Logical or analog switch (strain gauge) with definition of the triggering thresholds
• The order of gears can be automotive type or special
• Intervention time in function of gear position, rpm and engine torque
• Intervention at gear upshift on ignition by cutoff and/or advance modification with slope of return to normal (transmissions protection generating bang and exhaust flame)
• Programmable engine automatic acceleration (blip) and ignition cutoff at downshift

ADVANCED FUNCTION OF CAMSHAFTS POSITIONNING
The proportional positioning can be made on one or two camshafts per bank.
• 1 intake and exhaust camshafts
The proportional positioning is executed in PWM with
• 1 electrovalve for each camshaft for standard management
The camshafts targets can be:
• on mark state
• on mark position
• on one missing tooth
• on one supplementary tooth
• on regular teeth (exhaust only)

ADVANCED FUNCTIONS OF TURBO MANAGEMENT
The turbo management is made by the PWM command of a pneumatic electrovalve of leak or a servo-motor. Wastegates with back pressure are also managed.
• Turbo management by intake pressure control
• Turbo protection by turbo pressure limitation
• Management of wastegates with back pressure
• Pressure target tunable according to gear position, exhaust or intake or engine temperature, altimetric pressure, Ethanol content
• Bang-bang (antilag system) at the starting up for cannonball launch
• Bang-bang managed with fly by wire, proportionnal air electrovalve or mecanical throttle opening device
• Bang-bang monitoring by exhaust temperature
• Bang-bang disabling by dashboard switch for road driving

ADVANCED FUNCTIONS OF ENGINE PROTECTION
• Programmable reaction (by limitation of torque, rpm, or engine cutoff) on problem of oil pressure, oil temperature, engine temperature, turbo pressure, … with alarm lights and recording of the faults

ADVANCED VEHICLE MANAGEMENT
• Traction control
• Vehicle speed limitation (rallye raid, pitlane, …

ADVANCED ENGINE MEASUREMENTS
• Every measure has a customizable digital filtering
• Every measure maybe assigned in a selectable way to a physical input of the ECU
• For every measure of the ECU, it is possible to define a strategy of detection of failure, a strategy of replacement value in case of failure, or to use the standard strategies supplied by the ECU
• Vehicle speed
• Wideband Lambda sensor
• Oil pressure, fuel pressure, oil t°
• Exhaust temperature by thermocouple module or PT200

AUXILIARY CAN-BUS
One completely programmable auxiliary CAN-BUS (11 and 29 bit identifiers, speed until 1 Mbits) allow to exchange data with the others connected nodes, car manufacturer devices or data recording or dashboard.

AUXILIARY OUTPUTS
8 completely programmable auxiliary outputs.
They can be configured in On-Off (programmable hysteresis), PWM from 10 to 10000 Hz or angular (engine synchronous) commands, with adjustable cyclical ratio (and phase), and controlled by any combination of parameters known by the ECU.
It is for example possible to command in ON-OFF, PWM or synchronously with the engine external devices in function of the state of the multimapping switch, race switch, or throttle position, engine rpm, temperatures, limiter type, …