Keeping the same format by b_boy, I like to add a few a little to each section for simplicity.
How much water to inject
Rather quoting a general figure of w/f ratio, it would be a good opportunity to look more deeper into the reason behind the suggestion. I have always lean on the side of using water injection as an in-cylinder coolant because the other alternatives are excess fuel. It is also quite simple to calculate the quantity need to perform such an task. Other cooling tasks such as inlet charge cooling is not as simple to calculate due to many variables. I hope we will reveal the way it can be calculated (it has already been mentioned in several threads), hope it wil be repeated on this section by previous contributors.
May be there is a thermodynamicist here would produce a model of how water react during the journey from injection point to exiting the exhaust pipe. Any offers?
Heat exchanging model per gram of water:
inlet cooling => induction stroke cooling => combustion stroke cooling => exiting the exhaust pipe.
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Richard L
aquamist technical support
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