hello, almost all motorcycles manufacturer such Yamaha, Honda, Suzuki, Kawasaki use SI engine on their respective bikes. None of them ever commercialized a CI engine motorcycle. Just why?
Dear Muhammad
I dont think the power needed in motorcycles required a CI engine as we knew CI engine used for heavy load engine to carry it out while SI engine used for high speed requirement.
Motorcycle engines are typically two-stroke or four-stroke engines, but other types such as Wankel (( Hercules motorcycle 2000))
i dont think so. maybe the the cost might be higher to produced. the size of engine too small for CI engine.
If you know that there are a v8 engine motorcycle and 6 in line and v6 engine so the size of engine is not the problem
Also the cost of ci engine is not higher to produced compare with the type of engine produced
I think weight might be the problem as CI engines are heavy weight and work under very high compression ratio. And the basic aim of the motorcycle is high speed and sudden acceleration rather than large power output.
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