Quote:
Originally Posted by tjts1
Well if you think you've invented a magical free source of hydrogen that doesn't require any energy, I'm sure we would all love to heard about it. Until you do, any benefit gained from the hydrogen will be more than made up for by the additional alternator load. Sorry buddy but there is no free lunch here. Please check your spelling.
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Small amounts of hydrogen improve the thermodynamic efficiency of the gasoline engine by allowing lean burn flame stability to be extended. Lean burn at lower loads improves BSFC of the engine. This is not a second law of thermodynamics violation. This allows the engine to run at a higher effiency, extracting more power from the gasoline. It does not make free energy from the hydrogen. Go read up on hydrogen fuel enrichment. Not the kits. The science. The kits are garbage. I've said as much. There has been a lot of work done fairly recently that shows that hydrogen reduces peak cylinder temperatures, reduces NOx production, and reduces HC emissions.
Quote:
Originally Posted by tjts1
You need to read up on EFI or better yet build an EFI system before you start saying things like this. You have no idea what you're talking about.
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What i'm talking about is referred to as controller overshoot and undershoot. There is no perfect controller. Even with the best smith predictor (look it up) and the most optimally tuned PID controller, when you change the operating conditions, it won't track perfectly.
Furthermore, the intake manifold can't be treated static, or even linear pressure system. It's going to vary as at least a second order system, with the inertia of the air coming in (similar to inductance) and the volume of the air in the manifold at any given (similar to capacitance).
Current computers don't solve this equation and predict the exact amount of fuel at this instant required.
The current manifold intake temperature is X, and the current RPM is Y, therefore this is the amount of fuel required. Then they apply a half dozen modifiers to it for coolant temp, intake air temp, and fuel trims as determined by the O2 sensor.
I would actually say I know a fair bit about controllers and EFI.
And I apologise for my speellling.