Importance

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Abstract

Provided are an engine and an engine work machine. An engine in which a substantially box-shaped muffler made by joining a partitioning plate with inner and outer housings is directly secured to a cylinder, wherein the center axis of the cylinder is slanted rearward at an angle. The muffler has the partitioning plate inclined from the cylinder-side upper corner part toward the opposing lower corner part; and the muffler is secured at three points, i.e., two screws near an exhaust port, and an attachment screw near the upper corner part. Exhaust gas is discharged so as to flow forward along the upper wall surface of the muffler from near the end that is close to the cylinder in the upper surface of the muffler, and the exhaust gas is diffused, with the front corner part (curved surface part) being shaped as a curved surface having a large radius of curvature.

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First Claim