Quote:
We need to decide at some point how water injection will play its part.
I suggest the follwoing list of priority (order of importance):
1) Replacing high octane fuel at "HOM" mode
2) What action to take under water fault conditions
3) Actively disable the HOM mode or allow the ECU to switch off the HOM
4) Lower the boost pressure to wastegate setting by the DDS3
Question:
The rate of injection is determined by the PSI-FI and how can we tell the PSI-FI that we are in HOM mode?
At present the DDS3 will not know when the water should be injected so it cannot flag a logical fault under these conditions - it will only report that water is flowing or not. We can put an interface circuit to tell the DDS3 and PSI-FI at the exactly the same time that HOM mode is activated.
Is there a spare input on the PSI-FI to that effect? Once we have extablished this, we can sail forward.
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Richard I'm working on a full reply to your questions.
So far I can answer:
OK, I agree #1, is to get the WI up and going and see if can get HOM to function using just WI. #2, let the DDS3 shut down WI components on failure of WI components/lack of flow. #3, let the PCM switch off HOM. #4, have the DDS3 control the 806-234 to limit/control boost.
The PP (Power Paq) can turn on the water injection but I dont know for shure if it can accept an input....stay tuned