A tubular body formed by joining two semi-tubular portions that are divided in radial direction, the tubular body having a connection flange portion provided with a bolt hole on at least one end portion. The two semi-tubular portions have joint projection portions at both edge portions in circumferential direction, the joint projection portions projecting in radial direction and extending in axial direction, and each joint projection portion of the semi-tubular portions on at least one of both sides in circumferential direction is configured to be bent so as to deviate from a virtual division face passing a central axis in such a manner that a joint portion formed by abutting the joint projection portions does not interfere with a tool for fastening a bolt inserted into the bolt hole in a predetermined area in the vicinity of the bolt hole of the connection flange portion.

A first piece forms a part of a surge tank. A second piece forms the surge tank together with the first piece. The first piece includes an introduction hole through which blow-by gas is introduced. The first piece includes a first flange fixed to the second piece. The second piece includes a second flange fixed to the first flange. A cover is located inside the surge tank. The cover defines, together with an inner surface of the surge tank, a gas passage extending from the introduction hole into the branch pipe. A part of the cover is sandwiched between the first flange and the second flange.

An assembling structure for an intake manifold includes: a first downstream portion; a second downstream portion; an upstream portion; a connecting member that connects the first downstream portion and the second downstream portion with each other; and a plate-shaped stay. The connecting member is fixed to the first downstream portion and the second downstream portion by a bolt, and an other member that is a member other than the intake manifold is fixed to the intake manifold through the stay at least either between the connecting member and the first downstream portion, or between the connecting member and the second downstream portion.

Intake air systems featuring novel intercooler and air distribution system components. The intercooler component has a rectangular heat exchanger core for cooling air with a liquid, and the heat exchanger core has a first face for entry of uncooled air and a second opposing face for exit of cooled air. A first rectangular intercooler mounting flange structure is secured to the periphery of the first face and a second intercooler rectangular mounting flange structure is secured to the periphery of the second face. The first rectangular intercooler mounting flange structure and the second rectangular intercooler mounting flange structure are of approximately the same size and geometry, and the first rectangular intercooler mounting flange structure and the second rectangular intercooler mounting flange structure have substantially identical plural spaced-apart symmetrically distributed bolt apertures. The first rectangular intercooler mounting flange structure comprises a first L-shaped core mounting flange and a second L-shaped core mounting flange, the second rectangular intercooler mounting flange structure comprises a third L-shaped core mounting flange and a fourth L-shaped core mounting flange, and the first L-shaped core mounting flange, the second L-shaped mounting flange, the third L-shaped mounting flange and the fourth L-shaped core mounting flange all have approximately the same size and geometry. The air distribution system component has an air distribution tray adapted for mounting to the engine between the first and second row of cylinders, where the air distribution tray has a planar perimeter defining a horizontal plane and plural outlet ports, the plural outlet ports are disposed in an alternating staggered relationship about a longitudinal plane perpendicular to the horizontal plane, each of the plural outlet ports is adapted for connection to a respective air intake port of the cylinders of the internal combustion engine, and the air distribution tray is configured so that the planar perimeter of the air distribution tray is above both the engine and the outlet ports when the air distribution system is mounted to the engine and the plural outlet ports are connected to the air intake ports of the cylinders. The air distribution tray includes plural distribution channels configured to be below the planar perimeter when the air distribution tray is mounted to the engine, where each distribution channel generally is concavely curved about a longitudinal axis located in the longitudinal plane and is bounded by a first end and a second end, with the first end of each of the plural distribution channels coupled to a respective one of the plural

A kit maintains a seal of a joint of a fuel intake port member of a cylinder head and a fuel distribution port member of an intake manifold of a Harley Davidson motorcycle with panhead, ironhead or shovelhead engine. The kit includes an elastomeric band and a pair of circular clamps.

An air intake manifold for an internal combustion engine having a top shell and a base weldment. The base weldment is formed by permanent joining of a bottom shell having a plurality of air outlets with a runner assembly having a plurality of runner components each having an air inlet and an air outlet, wherein the plurality of runner components are attached to one another via a support member to form the runner assembly.

A car intercooler pipe includes an inlet of the intercooler pipe positioned at an upper side of the car intercooler pipe, an upper corrugated portion having upper corrugated bodies protruding in a rib shape from a surface of a pipe body extending in a direction toward the inlet, an outlet of the intercooler pipe positioned at a lower side of the car intercooler pipe, a lower corrugated portion, and an intermediate portion bent downward from the upper corrugated portion and having the pipe body connected to the lower corrugated portion, wherein a thickness of the pipe body of the intermediate portion is greater than a thickness of the upper corrugated body of the upper corrugated portion and a thickness of the lower corrugated body of the lower corrugated portion, and wherein disconnection portions having corrugations with different heights are formed in the upper corrugated body and the lower corrugated body.

An air intake device for an internal combustion engine of the present invention includes a water discharge passage extending from a bottom surface of a control valve housing part recessed in a housing passage forming part of an air intake passage to an air intake port. The water discharge passage is formed independently from the air intake passage, and includes: a water collection groove recessed in the bottom surface; a water discharge hole formed penetrating a cover of a valve control housing; and a water discharge hole penetrating a flange part of an insert inserted into the air intake port. The downstream end of the water discharge hole is connected to a space defined between an air intake port inner wall surface and an insert cylindrical part.

An engine assembly and methods of supporting components of an engine assembly. An internal combustion engine includes an intake port. A charge air cooler is coupled to the intake port. A turbocharger including a charge air output port is fluidly coupled to the charge air cooler. A charge air tube is coupled to the charge air output port of the turbocharger. The charge air tube fluidly couples the turbocharger to the charge air cooler for transfer of compressed charge air from the turbocharger to the intake port of the internal combustion engine. A charge air tube support assembly is coupled to the charge air tube. The charge air tube support assembly is configured to allow axial displacement of the charge air tube along an axis of the charge air tube extending from the output port of the turbocharger to the charge air cooler in response to thermal expansion of the charge air tube. The charge air tube support assembly comprises a wear sleeve and a clamp.

An internal combustion engine may include at least one engine block having a plurality of cylinders and at least one flange component. At least one attachment part may be secured to the at least one flange component. An alignment device may be constructed and arranged to align the at least one attachment part relative to the at least one flange component when the at least one attachment part is attached to the at least one flange component. The alignment device may include at least a first alignment unit, a second alignment unit, and a third alignment unit, which may be spaced apart from one another. At least one of the first alignment unit, the second alignment unit, and the third alignment unit may be constructed and arranged to align the at least one attachment part to a cylinder head in relation to a first aligning direction perpendicular to an attaching direction, when the at least one attachment part is attached to the cylinder head. At least one of the first alignment unit, the second alignment unit, and the third alignment unit may be constructed and arranged to align the at least one attachment part to the cylinder head in relation to a second aligning direction perpendicular to the attaching direction and inclined to the first aligning direction. The at least first alignment unit, the second alignment unit, and the third alignment unit may each be constructed and arranged to align the at least one attachment part to the cylinder head exclusively in one of the first aligning direction or the second aligning direction.