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puff puff is offline
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Join Date: Oct 2017
Posts: 14
I am thinking about PID, which will evaluate error and calculate control action once each 10ms, with PWM frequency of 100Hz, and the set point wil be reset each 200ms in the main loop (not sure at all what will it look like, not sure what was this reaction lag in the original WUR, hope, not much less than 200ms...). Will try to use Ziegler-Nichols method to tune it. Hope I'll succeed with it)
Reanimotion is probably right, the injector reaction time is irrelevant, but I am not sure, how will it react on fast PWM. I think that the period of that PWM signal should be several times bigger than the injector lag time? I could be wrong here though. Anyway, waiting for components, and need to figure out the key control parameters..

Btw, here Injectors and Fuel Supply it states literarly:
Do not run more than 70 psi fuel pressure, or the injectors may not open/close properly.

It's good that we have a tried and tested solution - nice to know that it's all feasible.
Old 10-22-2017, 05:18 PM
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