Newest patent photographs reveal that Kawasaki could also be introducing a two-stroke supercharged engine with a cross-plane crank.
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Kawasaki’s newest patent photographs reveal a sequence hybrid two-stroke engine
Two-stroke engines could also be lengthy gone from new manufacturing bikes, however appears to be like like Kawasaki is reviving two-stroke engines with a number of improvements that can make it future proof. Patent photographs filed with the Japanese Patent Workplace exhibits a supercharged four-cylinder, two-stroke crossplance engine with poppet valves, and double overhead camshafts. However it’s additionally a sequence hybrid energy system, moderately than the extra generally used parallel hybrids that are in manufacturing hybrid vehicles. A sequence hybrid makes use of electrical energy to drive the wheels, with a combustion engine merely used to generate the electrical energy wanted.
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The design is of a sequence hybrid engine which makes use of a two-stroke inner combustion engine
So, the combustion engine in sequence hybrid automobile engines is a comparatively low-powered unit, offering some additional cost to the batteries to spice up vary. However Kawasaki’s design is to make use of a excessive efficiency engine as an alternative of a low-powered engine which simply tops up the battery. And the two-stroke will probably be environment friendly and clear, as a result of it has been designed to function at its best pace, and inside a restricted rev band. The unit is fitted with a supercharger which can enhance the air stress within the consumption and likewise assist the engine expel the gases shortly.
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The crossplane crank permits just one piston to be fired each 360 levels, providing clean operation of the engine
And as an alternative of utilizing ports, as is utilized in typical bike two-stroke engines, the brand new design makes use of valves mounted on the high of the combustion chamber, opening them each on the similar time, permitting recent air to be drawn in and exhaust gases to be expelled in a single motion. So, within the Kawasaki design, it options poppet valves like a four-stroke engine, full with double overhead camshafts. It is simply the combustion cycle that is modified from four-stroke to two-stroke.
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The engine has a crossplane crank and a 1,three,2,four firing order, with every piston producing energy each time the crank rotates one full circle, or 360 levels. The crossplane crank helps run the engine easily, with no two pistons firing on the similar time. Now, the patents filed is just for the engine, so there is no affirmation on if such a sequence hybrid engine will make it to a bike. And the patent additionally says that this technique might be used as outboard motors on watercraft, and even buggies. So, the jury continues to be out on if we’ll see a bike with an engine like this.
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