Abstract: An intake system for a vehicle may include an intake manifold having an internal space divided into a first chamber and a second chamber by a partition wall, in which intake air flows into the first chamber through a charging path and is then discharged to a portion of an intake port connected to the intake manifold; and intake air flows into the second chamber through a bypass path bypassing charger and is then discharged to another portion of the intake port.

Abstract: A control device for an internal combustion engine adjusts the flow rate ratio between an amount of exhaust gas flowing to an exhaust gas recirculation cooler and an amount of exhaust gas flowing to a bypass passage, which bypasses the exhaust gas recirculation cooler, such that the amount of exhaust gas flowing to the exhaust gas recirculation cooler becomes zero during (i) a predetermined period from a point in time at which the exhaust gas recirculation operation shifts to execution, (ii) a period in which fuel cut is performed and the bed temperature of a catalyst is lower than a predetermined overheat temperature, or (iii) a period in which the flow rate of refrigerant flowing to the exhaust gas recirculation cooler is lower than a predetermined flow rate and the temperature of the refrigerant is lower than a predetermined first temperature.

Abstract: An exhaust gas recirculation (EGR) system for an internal combustion engine having dedicated EGR and operating at a net stoichiometric air-fuel ratio. In such engines, one or more cylinders is operable as a dedicated EGR cylinder, such that all of the exhaust produced by the dedicated EGR cylinder(s) may be directed back to the intake manifold. Because the engine's exhaust is net stoichiometric, its exhaust aftertreatment system has a three-way catalyst. An EGR loop is configured to recirculate EGR from the dedicated EGR cylinder(s) to the engine's intake manifold. A diversion line, modulated with a valve, connects the EGR loop to the exhaust aftertreatment system, thereby allowing adjustment of the relative amounts of EGR to be recirculated and to be provided to the exhaust system.

Abstract: A mounting device can mount an intake manifold to an engine and includes a bending moment applying device applying a bending moment to the intake manifold as the intake manifold is mounted to the engine.

Abstract: An intake assembly for a 3-cylinder, V-configured engine comprises an intake manifold configured to conduct combustion air to a first, two-cylinder, cylinder head housing assembly and a second, single-cylinder, cylinder head housing assembly. A centrally extending plenum defines a plenum axis. A first plurality of intake runners, in fluid communication with the plenum, extend from a front side and transition through a circumferential arc around an upper side to deliver combustion air to, the first, two-cylinder, cylinder head housing assembly. A single intake runner, in fluid communication with the centrally extending plenum, extends from a rear side and transitions through a circumferential arc around the upper side to deliver combustion air to, the second, single-cylinder, cylinder head housing assembly. A zip tube delivers combustion air to the central plenum at a location that is between one of the first plurality of intake runners and the single cylinder intake runner.

Abstract: This invention relates to a double-plenum or double-chamber inlet manifold or splitter, made up of a structural unit comprising two distinct coupled plenums with a common wall, an inlet opening for each of the two plenums and several pipes through each of the said plenums, the said superimposed plenums having substantially flattened general structures and forming, with their respectively connected inlet openings and pipes, two independent circulation circuits running from the entrance at the inlet openings to the outlet at the external openings of the pipes, the said external or outlet openings of the pipes being grouped in pairs, with each pair having an opening of each of the two types of pipes; the manifold comprises two one-piece parts assembled together, in a gas-tight manner, at the continuous assembly areas, a first part incorporating at least the two inlet openings and first portions of the walls of the two plenums, contiguous to the said openings and the second part incorporating the pipes and second

Abstract: An internal combustion engine has a plurality of cylinders and an air intake system. The air intake system is formed from at least one distributor pipe, a plurality of intake pipes, and at least one plenum. The plenum is located between the distributor pipe and the intake pipes. Here, the combustion air is fed to the air intake system via an air guiding duct which opens out into the distributor pipe. The charge pressure of the combustion air is reduced between the outlet out of the compressor and the inlet into the combustion chamber of the internal combustion engine. A distributor pipe length is dimensioned as a function of an equivalent distributor pipe diameter such that it is possible for a reduction in the charge pressure to be obtained within the air intake system by way of an expansion, with the expansion taking place partially in the plenum in the respective intake pipe and/or within the distributor pipe.

Abstract: An internal combustion engine intake device includes an intake collector and a first air induction pipe. The intake collector includes a first collector space and a second collector space. The first air induction pipe extends diagonally downward from an upstream side of the intake collector with respect to a horizontal direction of the vehicle. The first air induction pipe includes a first air induction space and a second air induction space. The intake collector and the first air induction pipe are configured and arranged such that a first boundary plane defined between the first collector space and the first air induction space is substantially perpendicular to a direction of an intake air flow from the first air induction space into the first collector space and the first boundary plane is substantially coplanar with a second boundary plane defined between the second collector space and the second air induction space.

Abstract: An internal combustion engine intake device is configured to improve the uniformity with which purge gas or other introduced gas is distributed to the cylinders of an engine. The intake device basically has a throttle chamber, an intake air collector, an air induction pipe, a partitioning part and a gas introducing pipe. The air induction pipe is provided between the throttle valve and the intake air collector. The partitioning part divides the space inside the air induction pipe into first and second air induction spaces. The gas introducing pipe is configured and arranged to introduce purge gas into the space inside the air induction pipe at a position between the throttle valve and the partitioning part. In one embodiment, the partitioning part is configured such that an upstream portion thereof is slanted with respect to a rotary shaft of the throttle valve.

Abstract: An air intake apparatus configured to combine air filtered separately through a plurality of air cleaners and lead it to a single throttle body suppresses or prevents variation in the pressure of airflow introduced from a plurality of intake paths to the single throttle body. Outside air is introduced to the plurality of air cleaners by a single air cleaner inlet. The air cleaner inlet has a chamber of a predetermined capacity which has a single intake duct, and a plurality of branching passages which branch off from the chamber into the same number as there are air cleaners and are connected to the separate air cleaners.

Abstract: The invention relates to an air-intake duct system (1) in which a throttle valve (40), an exhaust gas recirculating valve (29), a bypass valve (19), an exhaust gas cooler (11), against which exhaust gas flows via bypass valve (19), and, optionally, an air mass sensor are integrated. A complete intake unit for modern engines is hereby created, with which achieves a charging optimization and thus a reduction in fuel consumption as well as a reduction in pollutants by a corresponding thermal management in the engine by the exhaust gas cooler (11) that, together with a shell (3, 4) of the housing (2), is manufactured as a single piece. The individual add-on pieces (12, 19, 29, 40, 59) are optimally matched to one another and have, due to their designs, a low weight and a low finishing work requirement. This makes it possible to distinctly reduce assembly and manufacturing costs.

Abstract: The intake manifold assembly comprises three blocks each molded from a plastic material by injection molding, the three blocks consisting of a first block defining a half of the surge tank, a second block defining a half of the individual intake pipes and a third block defining a remaining half of the surge tank and a remaining half of the individual intake pipes. Thereby, the intake manifold assembly may be provided with various features for defining a pair of intake pipe sections arranged in a mutually parallel relationship while being made to be suitable for an injection molding process. Because the surge tank are defined by the first and third blocks while the individual intake pipes are defined by the second and third blocks, the intake manifold assembly essentially consisting of three blocks can internally define essential features required for a dual port intake device without requiring additional component members.

Abstract: The present invention pertains to a process and a system for controlling the intake valves of an internal combustion engine comprising at least two valves per cylinder. During the closing of the intake valves of a cylinder, provisions are made for closing a first valve and then for closing a second valve, the time between the closing of the first valve and the closing of the second valve being such that it permits the propagation toward the second valve of at least one overpressure generated in the first port by the closing of the first valve.

Abstract: An engine includes an engine body and four pistons reciprocally moveable relative to the engine body. The engine body and the pistons together define four combustion chambers. An air induction system is arranged to introduce air into the combustion chambers. The air induction system includes four intake passages corresponding to the respective combustion chambers. A plenum chamber is coupled with the intake passages. The air is delivered to each combustion chamber from the plenum chamber through each intake passage in due order. The plenum chamber is divided into first and second sub-chambers. The intake passages are categorized into first and second groups. Each group includes two of the intake passages which have discontinuity in the order with each other. The first group is connected with the first sub-chamber. The second group is connected with the second sub-chamber.