I'm surprised neither gizmag nor the fellows at morebikes saw the similarities between this design and two stroke diesels. Also, given the literature, it would seem Honda is merely trying to design a simple, small, and cheap two stroke diesel sized more for cars and motorcycles than tractor trailers and ships. It's certainly not a high power per displacement design.

Wouldn't surprise me if it never finds its way into a motorcycle. The large rpm range required is a huge problem for engine designs. It is far, far easier to design a combustion engine, especially a two-stroke engine, to run at fixed rpms. It can be made to run far more efficent and cleaner that way, too.

Guys you are forgetting one very good 2stoke design. Etec outboard engines. Could honda be looking at a new outboard design?

I'm not a religious person but I think I would become one in exchange for a clean dependable 2 stroke motor making a comeback. I had an Aprilia RS50 (49cc 2 stroke) that would keep up with traffic and it's amazing that's even possible.
I would love to see a 2 stroke 125 or 250cc dual sport on the market but that's probably unlikely to happen. The actual use for it is probably something more boring like powering a generator for a car with an electric drive system after it runs out of battery.

I'll be impressed if this design is better than the Grail Engine. Either way the power density of a clean 2 stroke would work well with a hybrid also.

If this ever comes to market it will probably be used where ever they want it to be used. The thing about patents is that they are public domain and Honda sure as heck isn't going to give out anymore information than is necessary. Certainly they aren't going to make it easy for patent cheats to manufacture a motorcycle by providing engineering drawings in a patent filing.

hre is another good 2 stroke engine
http://citsengine.com.au/

Whatever happened to the pulsed direct fuel injection system proposed for small engines like lawnmowers? This was launched on Kickstarter and featured in Gizmag.

If as you say "The injector is set to spray the fuel when the piston is near top dead center, so that unburned fuel won’t get swept out with the exhaust gases, and the fuel is aimed such that the cylinder and piston can both be partially cooled as the fuel evaporates against them." Fig1 shows, that if top dead center timing is used, the fuel injector will spray its fuel underneath the piston! In this design the fuel injector will have to spray its fuel when the piston is at the bottom of its stroke.

Anybody remember the Sarich designed injector ? It was a direct injection of fuel into the combustion chamber using high pressure air supplied by a simple compressor. A spin off of the Orbital Engine, but banned for racing because it was considered 'supercharging'
There was a bunch of 3 cylinder Suzuki-based engines in cars that underwent trials, and I even had the opportunity to drive one of Orbital's test vehicles - a 2-stroke, 6 cylinder fitted to a BMW car. Went like a rocket and sounded like a V12. Alas, now faded into the 'what if' category. Remember that one Mike Hanlon ?