A sheathing arrangement for an exhaust system of an internal combustion engine includes at least one sheathing element (18) with a sheathing element shell (19). On an inner side (30) of the sheathing element shell (19) insulation material (38) overlaps the inner side (30) in at least some areas. The inner side is to be positioned facing toward a component of an exhaust system (10), which component is to be sheathed. The insulation material (38) is fixed to the sheathing element shell (19) by means of at least one fastening element (40) passing through the sheathing element shell (19) and the insulation material (38).

A vehicle engine exhaust system with integrated exhaust gas recirculation (EGR) includes an exhaust manifold having multiple exhaust ports including a first exhaust port and a second exhaust port. The first exhaust port and the second exhaust port receive exhaust flow from a common exhaust split upstream of the first exhaust port and the second exhaust port. A valve assembly has a first butterfly valve positioned in the first exhaust port and a second butterfly valve positioned in the second exhaust port. A shaft is positioned within the exhaust manifold commonly connecting the first butterfly valve to the second butterfly valve to simultaneously rotate the first butterfly valve and the second butterfly valve.

Provided is a shield molding blank which has an uneven structure in which an air gap 4 is formed between metal plates 2, 3 formed in overlapping wavy shapes comprising recesses and projections that are periodically continuous in two directions orthogonal to each other, the shield molding blank being cut in a desired expanded shape and having peripheral edges folded. With the shield molding blank, it is possible to mold a shield having improved shield characteristics such as a heat-shielding property and a sound-shielding property.

Exhaust pipe assembly (EPA) includes: exhaust cavity; exhaust port (EP) and at least two air inlets communicating with the exhaust cavity, the EP being disposed at an end of the EPA; and a water inlet, a first part of a water inlet cavity (WIC), a second part of a WIC, a water counterflow cavity (WCC), and a water outlet that are provided in the EPA. The water inlets are provided in the same number as the air inlets. The first part of the WIC communicates with the first water inlet portion (WIP). The second part of the WIC communicates with the second WIP. The WCC communicates with the end of the second part of the WIC located at the EP of the EPA. The water outlet is disposed at a second end of the EPA. The first part of the WIC and the WCC each communicate with the water outlet.

The disclosure relates to a supercharged, direct-injection internal combustion engine having an intake system for the supply of charge air and having an exhaust-gas discharge system for the discharge of exhaust gas and having at least two series-connected exhaust-gas turbochargers which each comprise a turbine arranged in the exhaust-gas discharge system and a compressor arranged in the intake system and of which a first exhaust-gas turbocharger serves as a low-pressure stage and a second exhaust-gas turbocharger serves as a high-pressure stage, a first bypass line being provided which branches off from the exhaust-gas discharge system between the first turbine and the second turbine so as to form a first junction point.

An exhaust pipe structure for an in-line four-cylinder internal combustion engine includes: an in-line four-cylinder internal combustion engine; four exhaust pipes connected with respective exhaust ports in respective cylinders of the internal combustion engine; and a converging exhaust pipe connected with a converging portion at which downstream ends of all the exhaust pipes converge. In this exhaust pipe structure, the exhaust pipes are each configured as a dual pipe including an outer pipe and an inner pipe disposed inside the outer pipe. At the converging portion, the four exhaust pipes are arrayed linearly in parallel with each other, and the outer pipes of adjacent ones of the exhaust pipes are directly welded with each other at the downstream ends.

A process for the manufacture of a coated combustion component. The process includes spraying one or more liquid or powdered precursors into a high temperature thermal jet directed to a surface of a combustion component and forming a surface coating derived from the precursors to provide the coated combustion component. The surface coating may comprise a phosphate glass or a silicate glass. The surface coating may have a coefficient of thermal expansion from 3 to 26 ppm/K. A coefficient of thermal expansion of the combustion component may be greater than or equal to the coefficient of thermal expansion of the surface coating. The spraying may comprise solution spraying, powder thermal spraying, suspension thermal spraying, or a combination thereof.

A work vehicle includes: a wheel support member configured to support a pair of left and right traveling wheels; a link mechanism configured to support the wheel support member such that the wheel support member can be raised and lowered, the link mechanism being provided spanning between a vehicle body and the wheel support member; a suspension mechanism configured to elastically support the wheel support member, the suspension mechanism being provided spanning between a suspension support portion, which is formed on the vehicle body, and the wheel support member; and a lateral link configured to restrict leftward and rightward movement of the wheel support member, the lateral link being joined to a vehicle body-side support portion, which is formed on the vehicle body, and to a wheel-side support portion, which is formed on the wheel support member, wherein the link mechanism has: an upper link with an front end portion supported so as to be able to pivot up and down around an upper pivot axis by a link support portion, which is formed on the vehicle body, and with a rear end portion joined so as to be able to relatively pivot around an upper joint axis by the wheel support member; and a lower link with a front end portion supported so as to be able to pivot up and down around a lower pivot axis by the link support portion, and with a rear end portion joined to the wheel support member so as to be able to relatively pivot around a lower joint axis, a distance between the upper pivot axis and the upper joint axis is set shorter than a distance between the lower pivot axis and the lower joint axis, a gap width between the upper joint axis and the lower joint axis is set larger than a gap width between the upper pivot axis and the lower pivot axis, and when the vehicle body is in an unloaded state, the lower joint axis is located lower than the lower pivot axis.

An exhaust enclosure system may include an inner insulation assembly circumferentially surrounding an outlet pipe of an engine exhaust manifold. The inner insulation assembly may be in direct contact with the exhaust manifold. The exhaust enclosure system may include a cover enclosing the inner insulation assembly. The cover may be physically separated from the inner insulation assembly by a circumferential air gap disposed between the inner insulation assembly and the cover.

In the specified cylinder, the heat shield film is formed on the top surface of the piston, the surface of the parachute part of the exhaust valve, and the wall surface of the exhaust port. On the other hand, in cylinder other than the specified cylinder, the heat shield film is formed only on the top surface of piston. The heat shield film is also formed on the inner wall of the exhaust manifold, the inner wall of the exhaust pipe, and the inner wall of the housing. Among the exhaust manifold, however, the heat shield film is not formed on the inner wall of the branch pipe connected to the exhaust port of the other cylinder.