Quote:
Originally Posted by RustyLugNut
So, what mechanism would you say is allowing this to occur?
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Again: We know hydrogen will allow an engine to run leaner.
What we have to know is: Will it allow an engine to run lean enough to offset the fuel cost of its own production?
That's the long and short of it, is all.
Demonstration: proof of concept.
This engine, at this timing, at this rpm, can only run x lean without hydrogen, at n consumption rate, producing a power. Timing cannot be advanced any further without causing knock.
It can run x+y lean with hydrogen, at n-m consumption rate, producing at least a power or a+b power, with timing adjusted to take advantage of enrichment. Also without discharging the battery, mind... ergo... must demonstrate non-depletion of battery power reserves.
It can run x+z lean with water injection, at n-o consumption rate, producing a power or a+c power, with timing adjusted to take advantage of enrichment and water injection nozzle adjusted properly for the engine. If hydrogen is superior, all these values will be worse than the test with hydrogen.
In each case, timing is advanced up to a certain knock count, then advanced no further. NOx and EGTs are recorded. Other parameters are recorded to assess engine health.
Simple, right?