CROSS-REFERENCE TO RELATED APPLICATIONS The present application is based on and claims priority from Japanese Patent Application Number 2013-237422, filed Nov. 15, 2013, the disclosure of which is hereby incorporated by reference herein in its entirety. BACKGROUND The present invention relates to a...
Thecross-flowtapeintake/exhaustportsinthis enginehavetheiropeningsatbothsidesofthecylinder head.Becauseoverlapsofintake/exhaustportsare smallerthaninportsofothertypeswhichhaveopenings ononeside,thesuctionaircanbeprotectedfrombeing heatedandexpandedbyheatedexhaustair.Thecool, highdensitysuctionairhashighvolumeefficien...