Abstract: This composite material blade, which is formed using a composite material including reinforcing fibers and resin, and which has a positive pressure surface and a negative pressure surface, is provided with a ventral part, being the part on the positive pressure surface side in a blade thickness direction, which is the direction joining the positive pressure surface and the negative pressure surface, a dorsal part, being the part on the negative pressure surface side in the blade thickness direction, and a metal shield portion which is provided on the leading edge side, being the upstream side in a flow direction in which a fluid flows, wherein: the metal shield portion includes a main body portion provided on the leading edge side, and an embedded portion which is provided on the trailing edge side, being the downstream side in the flow direction, of the main body portion, and which is provided between the ventral part and the dorsal part; and the plate thickness of the metal shield portion in the blade thick

Abstract: An exhaust system member having an upstream-side opening into which exhaust gas flows and a downstream-side opening from which exhaust gas flows includes: first and second members. The first member includes first facing portions each having a distal end portion bulged radially outward in the exhaust system member, a notch is provided at a boundary between the distal end portion and a proximal end portion radially inward of the distal end portion at each end portion of each first facing portion, adjacent to the corresponding opening. The second member includes second facing portions, each arranged on the radially inner side of the corresponding distal end portion, each second facing portion is welded at a portion overlapped with the corresponding first facing portion, and a distal end face of each second facing portion facing a proximal end-side notch face of the notch in the corresponding first facing portion.

Abstract: A heat insulator fastening structure includes: a heat insulator which is configured so as to cover an exhaust manifold; and fasteners which are configured so as to fasten the heat insulator to an object to which the heat insulator is to be fastened, the heat insulator being fastened so as to be displaceable in a predetermined range. The heat insulator has: a single first region which is configured so as to vibrate in the same phase; and a single second region which is different from the first region and which is configured so as to vibrate in the same phase. At least one of the fasteners fastens the first region to the object to which the heat insulator is to be fastened. At least another one of the fasteners fastens the second region to the object to which the heat insulator is to be fastened.

Abstract: A heat shield structure includes an engine body having an exhaust manifold at its side portion, a fuel pump arranged above the engine body, and an engine cover. The engine cover includes a covering portion and a heat shield portion. The covering portion covers the fuel pump and the engine body from above. The heat shield portion protrudes downward from the covering portion. The heat shield portion partitions a space above the engine body and a space above the exhaust manifold from each other. The engine cover has an air guide passage between the engine body and the covering portion, the air guide passage extending from a front side of a vehicle toward the fuel pump.

Abstract: An exhaust system member having an upstream-side opening into which exhaust gas flows and a downstream-side opening from which exhaust gas flows includes: first and second members. The first member includes first facing portions each having a distal end portion bulged radially outward in the exhaust system member, a notch is provided at a boundary between the distal end portion and a proximal end portion radially inward of the distal end portion at each end portion of each first facing portion, adjacent to the corresponding opening. The second member includes second facing portions, each arranged on the radially inner side of the corresponding distal end portion, each second facing portion is welded at a portion overlapped with the corresponding first facing portion, and a distal end face of each second facing portion facing a proximal end-side notch face of the notch in the corresponding first facing portion.

Abstract: A heat shield structure includes an engine body having an exhaust manifold at its side portion, a fuel pump arranged above the engine body, and an engine cover. The engine cover includes a covering portion and a heat shield portion. The covering portion covers the fuel pump and the engine body from above. The heat shield portion protrudes downward from the covering portion. The heat shield portion partitions a space above the engine body and a space above the exhaust manifold from each other. The engine cover has an air guide passage between the engine body and the covering portion, the air guide passage extending from a front side of a vehicle toward the fuel pump.

Abstract: A control apparatus that controls a fuel supply system of an internal combustion engine of a vehicle, the fuel supply system including a low-pressure fuel supply mechanism that injects low-pressure fuel into an intake port of the internal combustion engine, and a high-pressure fuel supply mechanism that injects high-pressure fuel into a cylinder of the internal combustion engine, includes a control portion that controls a supply of fuel to the internal combustion engine from the fuel supply system. Immediately after the vehicle stops, when the internal combustion engine satisfies a predetermined condition, the controller idles the internal combustion engine by supplying the high-pressure fuel to the internal combustion engine by the high-pressure fuel supply mechanism, and after stopping the supply of fuel by the high-pressure fuel supply mechanism, idles the internal combustion engine by supplying the low-pressure fuel to the internal combustion engine by the low-pressure fuel supply mechanism.

Abstract: A piston top surface (23) has a depression. A center region (28A) is formed at the center of the depression to secure the diameter of a center tumble flow to be large. A side region (28B) is formed on both sides of the piston top surface to generate a side tumble flow that is not influenced by a cylinder bore inner wall and has a flow line generally parallel to that of the center tumble flow.

Abstract: A piston top surface (23) has a depression. A center region (28A) is formed at the center of the depression to secure the diameter of a center tumble flow to be large. A side region (28B) is formed on both sides of the piston top surface to generate a side tumble flow that is not influenced by a cylinder bore inner wall and has a flow line generally parallel to that of the center tumble flow.