Yamaha_Turbo_Diesel.jpgYamaha appears to be developing an inline-four intercooled and turbocharged diesel engine, filing a patent application for various technological solutions related to such an engine. Foremost among those solutions appears to be an intercooler located above the engine or concealed in the frame and a turbocharger mounted adjacent to the cylinder head. Such an arrangement would make the turbocharger and intercooler less vulnerable to damage, reduce turbo lag and improve packaging for a more compact design.
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While this patent application doesn't indicate that such an engine is

destined for a production bike, it does provide a sneak peak into the

kind of technology Yamaha is researching. The entire application is

embedded above and despite being a bit arduous to read, it's full of

fascinating ideas.

Thanks for the

tip

, René.

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