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two stroke engine

Kawasaki is building a turbocharged two-stroke engine. The great news was announced on the Kawasaki US Instagram platform.

The short video showed a bunch of comments by social media users who called for Kawasaki to bring back the two-stroke engine, plus that two-strokes are the best, etc. IThe video ends with “WE HEARD YOU” and the revving of a two-stroke engine in the background.

 

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A post shared by Kawasaki UK (@kawasakiuk)

Of course, there is not much else to go on from the teaser. However, there have been reports that patent documents submitted by the manufacturer in July 2024 showed a revolutionary engine. It has fuel injection which is not new but get this: The intake valves are camshaft operated and it has a turbocharger. A turbocharged two-stroke engine. This is enough to get us salivating!

1980 Kwasaki KR-1S

Fuel injection, coupled with camshaft operated valves promises efficiency and most importantly, cleaner emissions, as two-stroke motorcycles were banned in many countries for being polluting. Traditional two-stroke engines do not have mechanical valves and that led to unburned air-fuel and 2T mixture leaking out of the exhaust port. Kawasaki’s engine may well change that. The turbocharger adds in more air to the mixture so the engine burns leaner thereby saving fuel. The interesting now is to know what is its lubrication method.

But hang on. There is still no word on what kind of motorcycle that the engine will be used for. I could be a dirt-bike because there are countries allow its use on closed circuits and/or private lands, but not on the road. Or (god forbid) used for the hydrogen hybrid that Kawasaki had invested much into. Then again, Kawasaki already has the KX250 two-stroke MX bike.

2025 Kawasaki KX250

 

  • Untuk tahun 2018, KTM telah muncul dengan motosikal suntikan bahanapi dua lejang pertama dunia dalam bentuk KTM 250 EXC TPI dan KTM 300 EXC TPI.
  • Teknologi “Transfer Port Injection” telah menghidupkan semula masa hadapan enjin dua lejang dengan memperbaiki segala kelemahannya.
  • Motosikal KTM TPI ini juga telah didatangkan dengan Edisi ‘Six Days’ yang dilengkapi dengan kemasan grafik istimewa dan pengemaskinian prestasi.

(more…)

For 2018, KTM has come up with the world’s first fuel-injected two-stroke motorcycles in the form of the 2018 KTM 250 EXC TPI and KTM 300 EXC TPI.

The ‘Transfer Port Injection’ has revived the future of two-strokes by improving all the disadvantages of two-stroke engines.

KTM’s TPI motorcycles also come in the Six Days Edition which are fitted with special graphics and performance upgrades.

The world of two-stroke motorcycles promises one thing and one thing only; immense amount of power from a relatively small engine package. Like the name, two-stroke engines are basically able to accomplish this thanks to their ability to complete a power cycle with only two-strokes whereas four-stroke engines require twice as much movement. (more…)

KTM has finally taken the covers off their latest fuel-injected two-stroke motocross bikes for 2018; the KTM 250 EXC TPI and 300 EXC TPI.

The new ‘Transfer Port Injection’ (TPI) technology has two fuel injectors that fires directly into the transfer port without the need of pre-mixing the fuels.

This new fuel-injected technology for two-stroke engines means that it can greatly improve power delivery, lower fuel consumption and requires no messing with for the air-to-fuel ratio for different riding conditions.

It’s finally here, ladies and gentlemen. KTM has finally unveiled their latest masterpiece in their two-stroke motocross line up. Unlike previous motorcycles that they have launched before, these motorcycles represent the new era of two-stroke technology where KTM has combined it with fuel injection capabilities. (more…)

  • KTM’s “Transfer Port Injection” technology

  • Will be featured in three models for next year

After many rumours that have been circulated for the past few months, KTM has finally announced their plan to build a fuel-injected two-stroke engine that will be put into production. This new technology by the Austrian manufacturer is called the “Transfer Port Injection”. (more…)

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