Correct me if I'm wrong at ambient humidity levels below 35% an engine will generally put out less power. Now the same engine and conditions with the ambient humidity 45% or higher the engine will put out less power. It the middle levels the engine will put out little more power. We all know...
Now I know why my simple steam injection did increase power. It helps speed combustion.
As for the Japanese torpedo engines. It would be easy too backfeed the steam exhaust too make that engine perform and even last.
I use only distilled water. It's completely vaporized before I inject it in the intake. No evaporated cooling in intake. Some more details later.
Here's some basic combustion science.
From: Robert Harris <bob@bobthecomputerguy.com>
To: DIY_EFI@lists.diy-efi.org
Subject: Water and its effect...
Hi all, my first post,
Good point "beekeeper" I have an old non-computerized 351c. When I lean the carb out to get misfire, then turn my water injection on the misfire gos away. The humidity helps the initiation of combustion. By the way I do get more HP at the rear wheels without changing...