SFI Engine Management System

Process Control Engineering to the next level...

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OK, so I had this crazy idea for an electrical engineering project, take an engine which has 6 fuel injectors (was sequential fuel injected from the factory) and design a new Engine Management System (EMS). This engine doesn't have a distributor, it has 3 coil packs that were run as "Waste Spark" and I'm using it in a car that weighs 1/3 of the donor car so the factory EMS wouldn't work properly.

Luckily there is a group designing an Open Source EMS whose goals are similiar to mine, for more information check out their FreeEMS site at: DIYEFI.org

This is a work in progress, so stay tuned...

Here are the input specifications:

• Low resolution Crankshaft Position Wheel: 7x
• LoRes CPS type: Variable Reluctrance (VR)
• High resolution Crankshaft Position Wheel: 24x
• HighRes CPS type: Hall Effect
• Camshaft Position Wheel: ?x
• Camshaft PS type: Hall Effect
• 6 High-Z 19lb/hour injectors @ 43.5 PSIG
• GM Distributorless Ignition System (DIS)
• Throttle Position Sensor
• Heated Exhaust Gas Oxygen Sensors
• Intake Manifold Absolute Temperature Sensor
• Mass Air Flow Sensor
• Manifold Absolute Pressure Sensor