1. Hydrogen IC Engine Conversion Project

2. Project Aim/Brief Design, build and implement a simple engine management system to allow an otherwise unmodified engine to run on hydrogen gas –What does this mean? –Solution to be as simple as possible –Initial ideas too simple

3. Hydrogen and the ICE Benefits –Wide Flammability range, High diffusivity, High auto-ignition temperature, Low ignition energy, High flame speed Problems –High flame speed, Pre-ignition, low density, small quenching distance

4. Engine Management Closed Loop Control –Sensors, processor, actuators Maps –Fuel and ignition

5. Sensors Opto-Slot –High speed, digital Heated O2 MAP Accelerator –Analogue potentiometer or switch operated

6. Actuators Injector –CNG injector, 3mm orifice Approx mean flow rate 3.25L/s at 1 BAR Ignition –Opto-isolated MOSFET – coil

7. Project Targets Sensors, actuator subsystems to be designed by week 12 –Target Met Test/calibrate Sensors by week 12 –Target not met due to delay in acquiring specialised parts On-the-fly reprogrammability –New target, close to completion Processor Hardware/Software –On Target System Testing/Evaluation –On Target assuming sensors/injector materialise soon

8. Week 13-20 Attempt to complete system by end of week 14 Verify stability and behaviour. Organise safety inspection by end of week 15 Implement system on test engine, fine tune, gather results by end of week 20 Easter - Write report, prepare oral presentation

9. Any Questions?