An intake manifold for an engine includes first and second runners that each extend from a plenum to a mounting face of the intake manifold. The mounting face mates with a corresponding face of a cylinder head. The intake manifold defines a passage directly fluidly coupling the first runner to the second runner to reduce engine noise. The passage is spaced apart from the plenum and the mounting face. A method of controlling engine noise is also provided.

A cooling air feeding apparatus is for a motor vehicle, which has a motor vehicle body and a drive train, the drive train being assigned a cooler, and at least the cooler being arranged in a rear region of the motor vehicle body. The cooling air feeding apparatus has a throughflow opening, which is in the rear region and which is configured to receive air from surroundings of the motor vehicle and to feed the received air to the cooler. In order to regulate a driving state of the motor vehicle, the throughflow opening is configured with a variable throughflow cross section with the aid of a closing element, which is assigned to the cooling air feeding apparatus. The throughflow opening is configured to be controllably closed individually completely or partially and to be opened completely.

Multiple convergent nozzles define multiple flow passages in a flow path from an air inlet of the mixer to an outlet of the mixer. The convergent nozzles each converge toward the outlet of the mixer. An exhaust gas housing includes an exhaust gas inlet leading into an interior of the exhaust gas housing. Multiple convergent-divergent nozzles each correspond to one of the plurality of convergent nozzles. The convergent-divergent nozzles each include an air-exhaust gas inlet in fluid communication to receive fluid flow from a corresponding convergent nozzle and the interior of the exhaust gas housing.

An intake device of an engine comprises an intercooler, an intake passage including a downstream-side intake passage, and an EGR passage recirculating exhaust gas to the downstream-side intake passage. An intake-air supply opening having an opening area smaller than an area of a downstream-side face of an intercooler core is provided at a downstream side wall of a chamber. The downstream-side intake passage includes an extension passage portion extending upwardly along the downstream side wall. The intake-air supply opening includes an upper edge portion which separates the intake air flowing from an inside wall face of the extension passage portion and forms flowing main streams of the intake air inside the extension passage portion. EGR introduction ports are arranged at positions capable of supplying the EGR gas toward the flowing main streams.

Methods and systems are provided for modified intake runners including ribs in the direction of airflow. In one example, a system may include an intake manifold adapted to couple to an intake port via an intake runner. Internal to the intake runner, a plurality of negative ribs may be arranged along a direction of air flow on a façade of an inner portion.

A gaseous fuel mixer assembly for an engine includes a mixer housing forming gas delivery openings, and positioned to extend across a flow path formed by an intake conduit for the engine. A spool valve is within a central bore in the mixer housing and includes gas distribution openings selectively connectable to the gas delivery openings by moving the spool valve within the mixer housing using a piezoelectric actuator coupled with the spool valve by way of a pivot arm. Sealing lands of the spool valve are in an alternating arrangement with the gas distribution openings, such that at the closed position the sealing lands block the gas distribution openings from the gas delivery openings, and at the open position the respective openings are fluidly connected.

An injector arrangement structure includes an air cleaner which is arranged at a rear side of an engine for a vehicle, a rear suspension which extends vertically at the rear side of the engine, and a first injector which is attached to the air cleaner. The air cleaner includes an outlet tube configuring a clean side of the air cleaner. The rear suspension and the outlet tube overlap each other in a side view. A partition wall dividing an intake passage vertically is provided inside the outlet tube. The first injector is attached from a lower side of the outlet tube so as to inject fuel toward the partition wall.

The invention relates to a an air supply arrangement (100) for supplying air from the atmosphere towards an internal combustion engine in a vehicle, the air supply arrangement comprising an air intake (101) for intake of air from the atmosphere, an air outlet (102) for outlet of air towards the internal combustion engine, and an air duct (103) for leading air from the air intake (101) in a downstream direction to the air outlet (102). A separator (200) is arranged in the air duct (103) so as to divide the air duct (103) into an upstream portion (104) and a downstream portion (105) for filtering of atmospheric air from debris by passage of said atmospheric air through the separator (200). The air supply arrangement (100) further comprises a compressed air delivery arrangement (300) being arranged to supply compressed air towards the separator (200) for cleaning the separator (200) from assembled debris.

This air distributor (1) has an exterior casing defining an interior volume, an air inlet (4) opening into this interior volume, several air outlets (4) intended to convey air from the interior volume towards the cylinders of an engine, and a heat exchanger (8) arranged in the interior volume. The heat exchanger (8) comprises a stack of plates (10) of plastic material where adjacent plates (10) are arranged so as to define a set of intermediate spaces comprising closed intermediate spaces (12) in fluid communication to enable circulation of fluid through the stack of plates (10), and open intermediate spaces (14) configured to enable a passage of air through the stack of plates (10) from the air inlet (4) to the air outlets (6).

A vehicle includes an internal combustion engine and an air induction system configured to provide intake air to the internal combustion engine. The air induction system includes an intake port, an air box coupled to the intake port and having a wet side air box and a dry side air box, at least one sensor disposed within the air box and configured to detect a presence or level of liquid within the air box, and a watertight door disposed within the air box and configured to move between an open position that allows air to pass through the air box dry side, and a closed position that facilitates preventing liquid from passing into the air box dry side.