Abstract: A magnetic base body according to one embodiment includes: a plurality of soft magnetic metal particles; and a plurality of insulating films covering surfaces of the plurality of soft magnetic metal particles. The plurality of soft magnetic metal particles include a first soft magnetic metal particle, and the plurality of insulating films include a first insulating film covering a surface of the first soft magnetic metal particle. The first insulating film includes one or more first oxide regions, the one or more first oxide regions containing Fe and Cr and having a peak intensity at 730 cm?1 in a Raman spectrum obtained by Raman spectrometry.

Abstract: An engine includes a cylinder block including a water jacket, a water jacket spacer inserted into the water jacket, and a first gasket and a first cylinder head assembled to the cylinder block.

Abstract: In a fastening structure that fastens an exhaust manifold to a cylinder head of an engine, a bolt that extends through a flange is inserted into and fixed to a bolt hole of the cylinder head. The flange includes a contact surface that contacts a coupling surface of the cylinder head, and an inclined surface that is inclined with respect to the contact surface. A clearance is provided between the bolt and the cylinder head inside the bolt hole in a range extending from the coupling surface of the cylinder head to a specified length.

Abstract: An engine includes a cylinder block including a first jacket through which a coolant flows, a spacer disposed within the first jacket, a cylinder head including a second jacket through which the coolant flows from the first jacket; and a gasket interposed between the cylinder block and the cylinder head. The cylinder block includes a branch passage branched off from the first jacket to supply the coolant to an external device. The gasket includes communication ports that communicate the first jacket with the second jacket. The spacer includes a protruding portion that penetrates one of the communication ports that is closest to the branch passage. There is a clearance between the protruding portion and the one of the communication ports.

Abstract: In a fastening structure that fastens an exhaust manifold to a cylinder head of an engine, a bolt that extends through a flange is inserted into and fixed to a bolt hole of the cylinder head. The flange includes a contact surface that contacts a coupling surface of the cylinder head, and an inclined surface that is inclined with respect to the contact surface. A clearance is provided between the bolt and the cylinder head inside the bolt hole in a range extending from the coupling surface of the cylinder head to a specified length.

Abstract: A cylinder head includes an attachment member, the attachment member being spaced away from a first communication hole when the attachment member is attached to a first attachment hole of a first cylinder head main body, and a second cylinder head main body including a second partition wall portion separating two second water jackets, a second communication hole formed in the second partition wall portion and communicating the two second water jackets with each other, a second facing wall portion facing the second partition wall portion, and a second attachment hole formed in the second facing wall portion, wherein a distal end of the attachment member attached to the second attachment hole is inserted into the second communication hole.

Abstract: A bearing cap according to one embodiment of this disclosure includes: a concave part that supports a crankshaft of an internal combustion engine; first bosses that are disposed one on each side of the concave part and each have a first bolt hole; and second bosses that are disposed one on each side of a bearing cap main body having the concave part and the first bosses so as to flank the bearing cap main body and each have a second bolt hole. The bearing cap is fixed to a first member of the internal combustion engine by first bolts inserted into the first bolt holes, and to a second member of the internal combustion engine by second bolts inserted into the second bolt holes. At least the pair of second bosses have higher rigidity than a frame.

Abstract: A bearing cap according to one embodiment of this disclosure includes: a concave part that supports a crankshaft of an internal combustion engine; first bosses that are disposed one on each side of the concave part and each have a first bolt hole; and second bosses that are disposed one on each side of a bearing cap main body having the concave part and the first bosses so as to flank the bearing cap main body and each have a second bolt hole. The bearing cap is fixed to a first member of the internal combustion engine by first bolts inserted into the first bolt holes, and to a second member of the internal combustion engine by second bolts inserted into the second bolt holes. At least the pair of second bosses have higher rigidity than a frame.