Abstract: A combustion engine has at least one cylinder with a gas exchange inlet valve and a gas exchange outlet valve. A fuel injection device injects fuel directly into the cylinder. A fresh air section can be connected intermittently for fresh gas transmission to the cylinder via the gas exchange inlet valve. An exhaust section can be connected intermittently for exhaust gas transmission to the cylinder via the gas exchange outlet valve. A throttle element is provided in the fresh air section ahead of the gas exchange inlet valve in the direction of flow of a fresh air. A fresh gas line is provided, which opens into the fresh air section after the throttle element, in the region of the at least one gas exchange inlet valve. The fresh gas line opens into the fresh air section via a nozzle, which has flow according to Bernoulli, Venturi or Coanda.

Abstract: A valve device for a motor vehicle includes: a housing; a flow duct situated in the housing; and a flap arranged in the flow duct to close off the flow duct, the flap having regions in which a shaft penetrating the flap is fastened. The shaft is rotatably mounted in the housing and a valve seat is arranged in the flow duct, the valve seat being in contact with the flap in the closed position thereof. At least one portion of the flow duct adjacent to the valve seat has a cross section smaller than the inside diameter of the valve seat.

Abstract: An intake device is provide for drawing in fresh gas and feeding the same to an internal combustion engine with internal combustion, wherein the intake device is suited for the formation of a fresh gas vortex in a combustion chamber of the internal combustion engine. The intake device includes a first manifold section, from which all first parts of fresh gas line groups branch off to a fresh gas outlet end, and a second manifold section, from which all second parts of the fresh gas line groups branch off to the fresh gas outlet end, which are fluidically separated from each other from the separation point to the fresh gas outlet end. A vortex throttle assembly is provided in a first manifold section and the amount throttle device is provided in the second manifold section.

Abstract: An engine air intake structure includes a partition plate and a valve. The plate partitions an air intake passage communicating with an intake port into first and second paths. The valve is disposed in the passage and secured to the shaft. A first path opening is changed variable by the valve. The structure also includes an opposing surface, a stepped surface, an extending surface and a measurement groove. The opposing surface is an inner wall surface of the passage and opposes an end away from the shaft when the opening becomes minimal. The stepped surface is located on the intake port side of the end of the valve at the minimal opening and stands erect from the opposing surface. The extending surface extends from the stepped surface toward the intake port. The measurement groove is formed in the extending surface and extends from the stepped surface toward the intake port.

Abstract: An engine system having a turbocharger, in which an intake manifold is integrally formed, may include an intercooler that cools intake air supplied from the turbocharger, an EGR cooler that cools EGR gas supplied from an exhaust manifold, the intake manifold in which the intake air and the EGR gas supplied from the intercooler and the EGR cooler are mixed and that supplies a combustion chamber with the mixed gas, and a distribution unit that is mounted in the intake manifold and includes distribution pipes. One or each of the distribution pipes may receive the EGR gas from a connection hole through which the EGR gas is supplied and exhaust the EGR gas through an outlet towards an intake port.

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: In a variable compression ratio internal combustion engine that controls the compression of an internal combustion engine by changing the volume of the combustion chamber of the internal combustion engine in an axial direction of the cylinder, when a target compression ratio (?t) based on an operating condition of the internal combustion engine is at a reference compression ratio (?0) or greater (S102), the compression ratio is changed to the target compression ratio (S103). When the target compression ratio (?t) is lower than the reference compression ratio (?0) (S102), a control is executed to change the compression ratio and also to strength the tumble flow in the combustion chamber (S104).

Abstract: An air distributor including a cylindrical tubular body including connecting channels for supplying cylinders of an internal combustion engine, branches of which open in an aligned manner along a generatrix of the tubular body. The tubular body extends upstream into the branches of a 180° elbow that opens at an air inlet, the elbow inclined in relation to the diametral plane of the tubular body containing generatrix. A recess is provided in the tubular body opposite the branches of the first and second distributed cylinders. The recess has a converging/diverging profile around the lowest area between the branches, and the recess can use Venturi effect to reduce drop in swirl in the second distributed cylinder induced by architecture of the inclined elbow distributor, by regulating airflows in the channels. The distributor can mount to an intake face of a diesel engine cylinder head with two intake ducts per cylinder.

Abstract: An air distributor including a cylindrical tubular body including connecting channels supplying cylinders of an internal combustion engine, branches of which open in an aligned manner along a generatrix of the tubular body. The tubular body extends upstream into branches of a 180° elbow that opens at an air inlet, the elbow being inclined in relation to the diametral plane of the tubular body containing generatrix. The distributor includes a ramp partially throttling an air flow area of the main body to reduce a drop in swirl in the first distributed cylinder induced by the inclined elbow distributor, the ramp provided upstream close to the connecting channels branches of the first distributed cylinder on the elbow inclination side. The ramp can have gently- and steeply-inclined upstream and downstream faces. The distributor can mount to an intake face of a diesel engine cylinder head with two intake ducts per cylinder.

Abstract: An air distributor including a cylindrical tubular body including connecting channels for supplying cylinders of an internal combustion engine, branches of which open in an aligned manner along a generatrix of the tubular body. The tubular body extends upstream into the branches of a 180° elbow that opens at an air inlet, the elbow inclined in relation to the diametral plane of the tubular body containing generatrix. A recess is provided in the tubular body opposite the branches of the first and second distributed cylinders. The recess has a converging/diverging profile around the lowest area between the branches, and the recess can use Venturi effect to reduce drop in swirl in the second distributed cylinder induced by architecture of the inclined elbow distributor, by regulating airflows in the channels. The distributor can mount to an intake face of a diesel engine cylinder head with two intake ducts per cylinder.

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 engine intake manifold includes a casing having a plurality of air intake passages, and a plurality of valve plates, wherein each valve plate is disposed in one of the air intake passages to control airflow through the air intake passage. The valve plates are connected to a common valve shaft for rotation between an open position and a closed position. The engine intake manifold may further include an actuator that is mounted to the casing or to the valve shaft via a snap connection, and is rotationally connected to the valve shaft to allow the actuator to rotate the valve shaft.

Abstract: The present invention relates to a supercharged internal-combustion, notably indirect-injection engine comprising at least one cylinder (10) with two types of supercharged air intake means (12, 14), one type for non-carbureted supercharged air intake (12) and another type for carbureted supercharged air intake (14), said intake means being supplied with supercharged air by supply means (38). According to the invention, supply means (38) comprise a specific supercharged air supply device (46, 50) for each type of intake means (12, 14).

Abstract: An intake system for an internal combustion engine in which the inflow characteristic of a mixture of gas is varied by a partition wall provided replaceably in an intake port opening, whereby the output characteristic of the internal combustion engine is regulated to a desired condition, and a vehicle having appropriate operating characteristics is provided. A replaceable partition wall A is mounted in an intake port opening 1a of an internal combustion engine. The partition wall A is composed of a plate P that differs in length as compared to other plates. The plate P is inserted into an upper-lower pair of grooves provided in the intake port opening 1a, whereby the plate P is replaceably mounted, and the inflow characteristic of a mixture of gas sucked in through the intake port opening 1a is varied by replacement of the plate P thus mounted, whereby the output characteristic of the internal combustion engine is regulated to a desired condition.

Abstract: The present invention relates to a supercharged internal-combustion, notably indirect-injection engine comprising at least one cylinder (10) with two types of supercharged air intake means (12, 14), one type for non-carbureted supercharged air intake (12) and another type for carbureted supercharged air intake (14), said intake means being supplied with supercharged air by supply means (38).

Abstract: A four-stroke internal combustion engine with at least two inlet valves and an inlet flow path with at least two inlet ports per cylinder which branch off from a common inlet pipe and are guided separately up to the inlet valves and of which at least one inlet port is designed as a charge loading port and at least one inlet port as a volumetric port, with a throttle device for volumetric control being provided in the inlet flow path and the inlet flow path is connected with a fuel supply device. In order to achieve in the simplest possible way an improvement of the exhaust gas quality at low fuel consumption, the fuel supply device is formed by a joint carburetor for both inlet ports, with preferably the carburetor being arranged in the zone of the branching of the inlet ports from the inlet pipe.

Abstract: An intake manifold (10) for a multi-cylinder internal combustion engine includes a tubular intake distributor (12) from which a plurality of long intake tubes (13) extend and lead to the individual cylinders. Short intake tubes (14) likewise extend from the intake distributor and open into the respective associated long intake tubes (13). The intake distributor (12) and the long and short intake tubes (13, 14) are formed from a one-piece housing (11) which has a cavity (21) which intersects the short intake tubes (14). In this cavity (21) a control element (15) is installed, which includes flaps (16), flap frames (17), a shaft (19) and a control element frame (18). By moving the shaft (19) either rotationally or translationally, the short intake tubes (14) can be opened or closed. In contrast to arrangements known in the prior art, the control element (15) has no sealing elements which can catch or jam during assembly.