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SPECIFICATIONS FOR MODEL SMC

OVERVIEW

The Autronic SMC Sequential Engine Management System is our new compact engine management control for all engine performance upgrades. This is the little brother of the unit most widely used in professional motor sport in this country (SM2 and SM3 models). This unit also offers the same no compromise performance without the extra complexity of the many ancillary features of the SM2 and SM3 models.

Volume use of this product in overseas markets allows us to offer this little unit at a price that compares favourably with our competitors simple group fire injection units.

A user friendly ‘IBM’ compatible laptop program allows the user to select the degree of sophistication required for each application. This program, in combination with the intelligence within the management system, allows the user to select the finest calibration detail required to match the application, in an absolute minimum of time.

This program provides the means of interrogating the engine management system enabling speedy fault diagnosis and calibration. (An alternative low cost hand held calibrator may be made available in future).



2 versions of SMC

STD and Water Proof







USAGE

These systems can cater for the requirements of virtually any spark ignition engine, including the following: -

High output supercharged or turbocharged engines, with either multi point and/or

centre point injection.

Rotary (Wankle) and two stroke engines.

Engines having uneven firing sequences such as 2 and 4 cylinder ‘V’ configuration motorcycle engines and V6 motor vehicle engines.

IMPORTANT: - Please note that this product is intended for high performance motor sport application and compliance with statutory regulations when used on public roads cannot be guaranteed.

FEATURES

Eight injector drivers for full sequential operation on engines up to eight cylinders. May be set for ‘semi-sequential’ operation on engines having more than eight cylinders, eg: - 12 cylinder engine using 6 groups of 2 cylinders.

All injector types catered for (0.9 ohm to 16-ohm coil resistance). Specify unit fitted with optional high current injector drivers for 0.9 ohm or twin injector applications.

User choice of manifold absolute pressure or throttle position as engine load input. Internal absolute pressure sensor for simplified installation 0 to 200Kpa (o to 29.4 PSI) and 0 to 300Kpa (o to 44.1 PSI) available from stock. 0 to 45Kpa (o to 66.1 PSI) available on request.

Single coil distributor, twin coil distributor or multicoil distributor-less ignition configurations are possible on most engines.

Fitted with environmentally sealed connector the standard unit is splash proof. Units are available with double environmental sealing for use in the most arduous of applications (eg: - rally, off-road, and marine).

Auxiliary output function that can be used for any of the following:

Closed loop (feedback) boost pressure control for turbo charged engines with rpm and temperature dependent calibration characteristic.

Closed loop (feedback) idle speed control.

Control of engine cooling fan.

Programmable on/off control for solenoid or relay driving that operates according to engine speed and load (eg: - can be used for gear shift control or light, over rev indicator, inlet camshaft timing selection or control of a supplementary electric fuel pump that augments mechanical fuel pump delivery at low engine rpm only).

Fuel used pulse output to electronic or electro-mechanical counter with resolution of 0.1 litre (or use with trip computer).

Or even more sophisticated control function such as servo control of auxiliary butterfly for turbo charged applications requiring precise throttle control and minimum turbo lag.

Exhaust oxygen sensor input for sensing air/fuel ratio. Connect the low cost AUTRONIC 02 Sensor directly or for more demanding applications the AUTRONIC Wide Range Air/Fuel Ratio Sensor and Meter. The low cost sensor requires no interface adapters or expensive air/fuel ratio meters, and offers moderate accuracy and tolerance to leaded fuels. This function can be used to monitor air/fuel ratio during engine tuning or can be used for feedback control of air/fuel ratio for applications requiring exhaust catalytic conversion (feature available on request).

Diagnostic/Error indicator of sensor or ECU fault conditions with memory for detection of intermittent fault conditions. An external light may also be connected for remote indication of abnormal operation.

Precise spark advance control strategy for both static and dynamic operating conditions.

Unique calibration strategy allows accurate control of fuel delivery under both acceleration and deceleration.

User selectable spark and fuel delivery strategy for abnormal engine operation conditions to minimize possibility of engine damage whilst still maintaining engine operation. (eg: - over heated or over boosted).

Comprehensive limp-home function with user selectable default settings that ensure engine operation can continue after sensor failure has occurred.

Full compensation of engine control parameters for engine operation at any altitude (fuel delivery, ignition timing and boost pressure).

Adaptive learning (with memory) to minimize the number of user setups required and to provide optimal control of air/fuel ratio, boost pressure and idle stability.

Rev limiter with a soft characteristic that uses a combination of fuel delivery and spark control.

Fuel pump safety shut-off. Pump stops 3 to 4 secs after the engine stops.

Unit is ultra light weight/compact yet has sufficient drive capacity for high power continuous duty supplications. (One unit OK all applications from motor cycle to large capacity twin turbo engines).

Optional interface unit to allow sequential operation without the need for separate crank/camshaft sensors or special multi-sensor distributor (P/N: - ADP102 available Q3-93).

Remote monitoring of all functions using optional telemetry adapter (available Q2-93).

INTERFACE REQUIREMENTS FOR MODEL SMC

INPUTS

Sensors

Ignition input Hall effect. (Also available for direct connection to magnetic reluctor type pick-ups).

No. 1 cylinder reference. (Also available for direct connection to magnetic reluctor type pick-ups).

Barometric pressure (internal to ECU).

Manifold pressure (internal to ECU).

Throttle position.

Intake air temperature.

Engine coolant temperature.

Exhaust oxygen (or optional Wide Range Air/Fuel Ration Sensor).



Adjustments

Idle mixture trim. (Internal to ECU and screwdriver adjustable from outside).

OUTPUTS

Main

8 off injector driver (optional 2 injectors per driver).

Ignition output

Open collector output to any of the following:

Single coil high-energy ignitions: Bosch 7 pin, Mitsubishi 3 pin.

Autronic Capacitor Discharge Ignition.

MSD 6A etc.

4 outputs are available allowing multi coil distributor-less ignition for application on engines up to 8 cylinders.

Auxiliary

Fuel pump/injector fuel shut off safety relay.

Multi function on-off or pulse width modulation output for either:

Engine cooling fan relay.

Idle speed actuator (variable duty cycle single pole type eg:- Bosch

Turbo charger waste gate control valve (SEM, most OEM types or AUTRONIC low or high capacity).

Turbo charger auxiliary butterfly control motor.

General-purpose duty cycle output with user defined characteristics.

Fuel used pulse output (for trip computer function).

SERIAL I/O

Communication with IBM compatible computer for calibration, fault diagnosis. (Some markets require special adapter).


boost control, antilag, extra cylinder pulse, idle control 2 wire....

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Modified by fourthchirpin at 8:22 AM 5/24/2008

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