Engine

Abstract

An engine in a straddle-type vehicle is mounted on a vehicle body frame in which a down frame extends downward from a head pipe. The engine is provided with a cylinder located rearward of the down frame, a cylinder head provided on an upper surface of the cylinder, an exhaust pipe extending from the cylinder head toward a vehicle rear side, and an exhaust gas sensor configured to detect a predetermined characteristic in exhaust gas. The exhaust pipe extends downward through one lateral side of the down frame, crosses front of the down frame, and then extends upward through the other lateral side of the down frame. The exhaust gas sensor is provided on a back surface side of the exhaust pipe on the one lateral side of the down frame, and is located on an outer side with respect to the cylinder in a vehicle width direction.

Dependencies are inferred from the claim text.