I told somewhere in the thread, real work won't start until few years later. All I can do now is keep analysing and simplify the concept in my free time.
I don't have time to do any real work yet. I'm just a regular dude working paycheck to paycheck, dealing with complicated problems in life and usually tired to do anything else. In two years, we're moving and a lot of changes, hoping will change my situation, enough to give me more free time.
My current plans don't include investors. I just don't have time nor the resources to run a campaign looking for investors.
If the prototype is successful, I'll have a very cheap source of electricity that I can turn into a lucrative revenue stream indirectly online. I don't really need to mass produce the product and market it to make money from it. Just one small cheap engine will do and I can build more from the revenue it makes and compound my earnings.
Patents, protecting IP, marketing is just headache. I can do much easier just using it personally for income. Just enough to get a very thin slice from the market. I have no intention of disrupting the status quo.
I have no intention of saving the world from global warming nor energy crisis. You'll have to do a lot more to convince me otherwise.