Yamaha patents turbodiesel motorcycle engine

Yamaha 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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