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Kawasaki Ninja H2
The Kawasaki Ninja H2 is a "supercharged supersport" class motorcycle in the Kawasaki Ninja sportbike series, manufactured by Kawasaki Heavy Industries, featuring a variable-speed centrifugal-type supercharger. With a claimed , the H2R track-only variant has 50% more power than the fastest street-legal motorcycles, and would greatly exceed the production motorcycle top speed of nearly held by the Suzuki Hayabusa or Kawasaki ZX-12R, but the comparable street-legal H2 has a much lower power output of .〔
Its namesake is the 750 cc Kawasaki H2 Mach IV,〔 published by Kawasaki, September 16, 2014〕 an inline triple that was introduced by Kawasaki in the early 1970s to "disrupt what it saw as a sleeping motorcycle market".
==Pre-Intermot engine announcements and analysis==
The H2 was pre-announced by Kawasaki in a late 2014 teaser campaign, and was widely expected to be fully revealed at the Intermot trade show the same year. Before full details were released by Kawasaki, the supercharged inline-4 engine was thought by several industry observers to be identical to, or closely related to, a nearly 1,000 cc inline-4 unit with a centrifugal supercharger displayed by Kawasaki at the 2013 Tokyo Motor Show. Kevin Cameron published an analysis showing an engine of that displacement, mildly boosted at , would generate , well beyond that of Kawasaki's current leader, the ZX-14 (the horsepower figures are expressed at the rear wheel). The same engine would generate with of pressure. His analysis included a discussion of the benefits of a two-speed supercharger for this application, to provide more linear power delivery (as opposed to the intractable Japanese turbo bikes of the 1980s that suffered from turbo lag). Cameron also said Kawasaki patent documents suggested the engine would rely on evaporative cooling using port fuel injection, instead of a bulky intercooler.
Kawasaki claimed the 2013 model was the first supercharger designed by a motorcycle manufacturer. In 2013, journalists said that the engine could power the "next generation () ZX-14R" sportbike. Journalists also noted that Kawasaki already has a production inline-4 supercharged (but intercooled) engine powering the Jet Ski Ultra 300X personal water craft.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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