Digital fuel injection test

-Throttle body & injector from Yamaha YBR125

-Fuel Pressure regulator from Nissan Skyline GTR

-Fuel Pump and Filter from Triumph Speed Triple

-Microcontroller is Atmega328p with Arduino bootloader

- Fllywheel vr sensor triggers on-chip comparator, flagging interrupt, which starts injection, loads output compare register, as well as triggering Input Capture for RPM measurement

- 16bit Timer with /64 prescaler = 0.0004 second accuracy. Output compare triggers interrupt to stop injection

- Fuelling algorithm is Alpha-N : TPS vs RPM in a 16x16 2-byte EEPROM array

- UART Serial communication allows on-the-fly editing of EEPROM, as well as diagnostic output.

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Uploaded on June 5, 2014