A system includes a generator and an enclosure surrounding the generator, the generator having an air intake and an inside surface. The system also includes an air intake housing affixed to the inside surface of the enclosure and fluidly connected to the air intake, the air intake housing terminating in an air intake housing inner plate positioned at inner edge of the air intake housing. The air intake housing inner plate has a plurality of air intake holes. In addition, the system includes a damper, the damper abutting the air intake housing inner plate, the damper having a plurality of damper holes. The damper is adapted to slide along the air intake housing inner plate.

The present disclosure relates to a pipeline for supplying a gas to an internal combustion engine, with a pipeline cross section forming a passage for the gas and a gas mass measuring device for measuring a gas mass flow. The pipeline is characterized in particular in that it comprises a mixing element made from a wire structure upstream from the gas mass measuring device and in that the mixing element serves for the thorough mixing of the gas in order to homogenize an inhomogeneous flow profile which is present upstream from the mixing element.

A device (1) for lowering flow noises has opposed first and second connection pieces (2, 3), and outer and inner sleeves (4, 5) between the connection pieces. A radial collar (6) is between the sleeves (4, 5) and forms separated volume chambers. Openings (11) in the inner sleeve (5) connect the volume chambers to a line space (13) enclosed by the inner sleeve (5). A sealing ring (15) at the free end (14) of the collar (6) defines a ring cap with a lateral surface (21) that reaches over the collar (6) and seals against the sleeve (4, 5) adjacent the free end (14) of the collar (6) and that has a surface (23, 26) that seals against either an end face (25) of the collar (6) or a side surface (28) of the collar (6) extending parallel to the radial collar (6).

An intake manifold includes a surge tank, and an intake passage part. An inner surface of the intake passage part includes: an inner peripheral region which is located inner side of the intake passage part in a curvature radius direction; an outer peripheral region which is located outer side of the intake passage part in a curvature radius direction; a first lateral region; and a second lateral region. The outer peripheral region includes a first inclined region, a second inclined region, and a bottom region. When seen in the section orthogonal to a center axis of the intake passage part, the first and second inclined region are curved so as to be convex outward from the intake passage part at a curvature radius. The bottom region has a shape convex outward from the intake passage part in the direction of the curvature radius.

An engine includes an engine body assembly and an air intake system including an air plenum. The air plenum is positioned above the engine body assembly. The engine includes an air plenum support bracket having an upper arm coupled to the air plenum and a lower arm coupled to the engine body assembly. The engine also includes a vibration isolator coupled to the air plenum support bracket and interposed between the air plenum and the engine body assembly, thereby inhibiting engine vibrations from transferring to the air plenum.

An intake manifold includes a surge tank, and an intake passage part. An inner surface of the intake passage part includes: an inner peripheral region which is located inner side of the intake passage part in a curvature radius direction; an outer peripheral region which is located outer side of the intake passage part in a curvature radius direction; a first lateral region; and a second lateral region. The outer peripheral region includes a first inclined region, a second inclined region, and a bottom region. When seen in the section orthogonal to a center axis of the intake passage part, the first and second inclined region are curved so as to be convex outward from the intake passage part at a curvature radius. The bottom region has a shape convex outward from the intake passage part in the direction of the curvature radius.

A fresh air system for supplying combustion chambers of an internal combustion engine with fresh air may include a housing, through which at least one fresh air path passes, and a flap mechanism, which includes at least one flap adjustably mounted on the housing. The flap may be rotatably adjustable between a closed position, in which the flap closes off the fresh air path in a fluid-tight manner and an opened position, in which the flap opens the fresh air path for fresh air to flow through. The flap mechanism may include a spring-elastic preload element, which supports itself on the housing and preloads the flap against at least one of the opened position and the closed position.

Various methods and systems are provided for reducing cylinder-to-cylinder variation in exhaust gas recirculation. In one embodiment, a system comprises a first cylinder group of an engine having a first number of cylinders, a second cylinder group of the engine having a second number of cylinders that is not an integer multiple of the first number of cylinders, and an exhaust system coupled to the first cylinder group and the second cylinder group. In at least one mode of operation, the exhaust system has exhaust ports of the first cylinder group fluidly coupled to an intake of the engine and exhaust ports of the second cylinder group fluidly decoupled from the intake.

An engine includes an engine body assembly and an air intake system including an air plenum. The air plenum is positioned above the engine body assembly. The engine includes an air plenum support bracket having an upper arm coupled to the air plenum and a lower arm coupled to the engine body assembly. The engine also includes a vibration isolator coupled to the air plenum support bracket and interposed between the air plenum and the engine body assembly, thereby inhibiting engine vibrations from transferring to the air plenum.

An air intake system for a vehicle having an engine that produces engine vibrations. The air intake system includes an air plenum having an air discharge port. An air runner assembly is coupled to the engine and has an air inlet port. An annular cuff has an upstream end coupled to the air discharge port and a downstream end coupled to the air inlet port. The annular cuff provides fluid communication between the air discharge port and the air inlet port. The annular cuff is configured to inhibit engine vibrations from transferring to the air plenum from the air runner assembly.