There have been rumors of Kawasaki developing a supercharger for streetbike applications and after doing a little digging, sure enough, here’s a very recent patent for exactly that. The blower is located behind the engine (number 38 in the drawing).
Kawasaki engines never struck me as weak little things to begin with, and depending on the amount of boost, this could add enormous power. I’m not sure which model or models it’s intended for, but if you start with a ZX14, what you’ll be able to do with that on the street is open to debate, but I imagine the marketing department will find a use for it.
When or if this will see the light of day in an actual production bike remains to be seen, patents sometimes go nowhere, but it’s a relatively low cost way to bring out a new model and these days, that’s a plus.
Patent explanation below:
The disclosed engine supercharging device is provided with a supercharger (38) that pressurizes air aspirated into an engine (E); an air cleaner (36) that cleans outside air; a clean-air supply duct (56) that supplies clean air (CA) from the air cleaner (36) to the supercharger (38); a supercharged air duct (62) that supplies supercharged air (SA) from the supercharger (38) to air intake ducts (60) of the engine (E); and a relief valve (68) that adjusts the air pressure in the supercharged air duct (62); The exhaust outlet (68b) of the relief valve (68) is contained in the air cleaner (36). The engine (E) has a plurality of cylinders, the downstream portion of the supercharged air duct (62) is formed from an air intake chamber (64) that supplies intaken air to the air intake duct (60) of each of the plurality of cylinders. The relief valve (68) adjusts the air pressure of the air intake chamber (64).