Abstract: The invention relates to a fluid valve, in particular for the exhaust gas from a motor vehicle, comprising: a body (30) defining at least one duct (32), and a movable flap that can rotate about a shaft between a closed position preventing the fluid from flowing through the duct (32) and an open position allowing the fluid to flow through the duct (32). According to the invention, the valve includes an opening clearance (E) between flap and a wall (62) of the body (30) for the passage of the fluid, said clearance (E) extending in a direction parallel to the pivot shaft of the flap over a length that varies according to the angular position of the flap.

Abstract: A three-way valve configured to provide the connection between a gas intake circuit and an exhaust gas recirculation circuit is disclosed. The valve includes a first shutter for regulating the airflow rate, a second shutter for regulating the recirculated exhaust gas flow rate, a single motor for driving the two shutters, and gearing connecting the motor to at least one shutter. The gearing includes functionality to drive the at least one shutter.

Abstract: The invention relates to an engine control valve including a body defining an inner duct and comprising a flap (10) mounted such that it can pivot by means of a shaft (12), said flap (10) comprising a first portion (11). The flap can pivot between an open position allowing the passage of fluid into the duct and a closed position in which the flap (10) comes into contact with a flat seal (100) of the flap. The outer contour of the seal (100) surrounds the outer contour of the flap (10), said seal (1) comprising an opening (6) and a solid portion (3). The above-mentioned first portion (11) seals the opening (6) in the seal (1) when the flap (10) is Z in a closed position. The seal (100) includes a reinforcement area (101) in the solid portion (3) thereof, such as to prevent the seal (100) from deforming owing to the high pressure and high temperature of the gases in the valve.

Abstract: The invention relates to a fluid valve comprising: a body (50) defining a fluid flow duct (60), and a flap (1) that can move between a closed position preventing the fluid from flowing through the duct and an open position allowing the fluid to flow through the duct. According to the invention, the valve also comprises a joint (2) having at least one opening for the passage of the fluid, and the aforementioned flap can close the opening(s) (5) in the joint when in the closed position.

Abstract: A valve (1), in particular for a combustion engine, comprising:—a body (2) in which the following are provided: a housing (8) in which at least one bearing is arranged, and a conduit (3) designed to be traversed by a fluid, and—a shutter (5) mounted pivoting in the body (2) by a pin (7) received with radial clearance in the bearing, the shutter (5) pivoting between:—an open position, and—a closed position in which it comes into contact with the body (2) via a first contact area of the shutter located on a first side of the pin (7) and via a second contact area of the shutter located on a second side of the pin (7) opposite said first side, the switching of the shutter (5) from the open position to the closed position being accompanied by a radial movement of the pin (7) in the bearing.

Abstract: The invention relates to a method for controlling an exhaust gas recirculation circuit for an internal combustion engine of a motor vehicle. The engine is linked to an air intake circuit and to a gas exhaust circuit linked to the air intake circuit by the recirculation circuit. A first valve controls the flow of air upstream from the recirculation circuit, and a second valve controls the flow of exhaust gases that are recirculated within the recirculation circuit. The method comprises the following steps: a) the first valve is closed, and the second valve is gradually opened; b) if the second valve is opened at an angle greater than a value between 25° and 35°, the first valve is gradually opened concomitantly to the opening of the second valve. As a result of the invention, the EGR rate is easily controllable.

Abstract: The valve 1 comprises: a body 2 having a through-channel 3 for the fluid, a rotary control shaft 4 having a seal for the channel, mounted in a passage 10 of the body, bearings 6, 7 provided in said passage between the body and the rotary control shaft, and axial locking of the shaft in said body. According to the invention, the axial locking of the shaft is achieved by at least one cylindrical ring 15 mounted in a rotationally constrained manner on said shaft 4 and having an external surface 20 orientated towards one of the bearings 6 and contacting a transverse face thereof.

Abstract: Engine control valve having a body delimiting an internal duct and comprising a flap (10) mounted such that it can pivot via a spindle (13) of the flap (10), the flap (10) comprising a first part (14) and being able to pivot between an open position that allows gases to pass along the duct, and a closed position in which the flap (10) comes into contact with a flat seal (1) inserted between two elements of the valve body, said seal (1) having an exterior contour that externally surrounds the exterior contour of the flap (10), the seal (1) comprising an opening (6) and a solid portion (3), said first part (14) closing off the opening (6) of the seal (1) when the flap (10) is in a closed position, the seal (1) comprising at least one slit (7) formed in the peripheral zone (2) of the solid portion (3) and communicating with the opening (6).

Abstract: The invention relates to an engine control valve which includes a body defining an inner duct and a rotatably mobile shutter (1), said shutter (1) being capable of pivoting between an open position enabling gas to flow into the duct and a closed position sealing the duct, the valve including a first system (2, 4) for sealing the duct relative to the outside of the body and a second sealing system (3), separate from the first, and ensuring that the shutter (1) is sealed when in the closed position thereof.

Abstract: The invention relates to an engine-control valve having a body defining an inner channel and including a flap (10) pivotably mounted by a pin (12), said flap (10) including a first portion (11) and being capable of pivoting between an open position enabling gas to flow into the channel, and a closed position preventing said flow, and in which the flap (10) engages with a planar seal (1) inserted between two elements of the valve body, said seal (1) having an outer contour surrounding the outer contour of the flap (10) on the outside and said seal including an opening (6) and a solid portion (3), said first portion (11) blocking the opening (6) of the seal (1) when the flap (10) is in a closed position, one of the two elements (20) of the body being provided with a supporting projection (21), positioned in the valve such as to be in contact with the solid portion (3) of the seal (1).

Abstract: The invention relates to an engine control valve, having a body delimiting an internal conduit and comprising a shutter (1) having an axis (2) of rotation separating said shutter (1) into a first portion (3) and a second portion (4), said shutter (1) being pivotably mounted in said conduit between a fully opened position allowing the flow of fluid in the conduit, and a closed position preventing said flow, and for which the first portion (3) comes into abutment against a seal (8) rigidly connected to the inner structure of the valve, said seal (8) being provided with an opening (11) equal to the cross section of the gas passage in the conduit. The seal (8) has an extension (12) which projects into the opening (11) in such a way as to partially cover said opening (11).

Abstract: The invention relates to an engine control valve including a body defining an inner duct and comprising a flap (10) mounted such that it can pivot by means of a shaft (12) of the flap (10), said flap (10) including a first portion (11). The flap can pivot between an open position allowing the passage of gas into the duct and a closed position in which the flap (10) comes into contact with a seal (1) that is solidly connected to the body of the flap. The outer contour of the seal (1) surrounds the outer contour of the flap (10), said seal (1) comprising an opening (6) and a solid portion (3). The above-mentioned first portion (11) seals the opening (6) in the seal (1) when the flap (10) is in a closed position. The flap (10) comprises a boss (18), separate from the first portion (11), which is positioned such as to remain in contact with the solid portion (3) of the seal (1) when the flap (10) pivots between an open position and a closed position or vice versa.

Abstract: The invention relates to a system for recovering energy in an exhaust gas circuit (3) of a heat engine (1) of a vehicle, said system comprising an exhaust gas bypass duct (15) comprising a heat exchanger (18). An energy recovery system according to the invention is mainly characterised by the fact that the part of the exhaust circuit arranged downstream of the connection point (17) of the bypass duct (15) for connecting to said circuit (3) is provided with a valve (16) that can at least partially close the exhaust circuit (3), and the by-pass duct (15) comprises, at the outlet of the exchanger (18), a first pipeline (20) running into the admission circuit (2, 6) and a second pipeline (21) running into the exhaust circuit (3) downstream of the valve (16).

Abstract: An engine control valve includes a flap pivotally mounted on an axis separating the said flap into a first part and a second part that are joined together at an interface plane defining a planar shoulder, the flap being capable of occupying a closed position in order to interrupt the passage of the gases, and for which purpose the first part interacts with a first portion of a joint and the second part interacts with a second portion of this joint, the joint being integral with the internal structure of the valve. A valve is characterized mainly by the first part of the flap has an overhang that arises on the shoulder and extends parallel to the second part of the flap.

Abstract: The invention relates to a system for recovering energy from an exhaust gas circuit (3) of a heat engine (1), including an exhaust gas by-pass pipe (12) that includes a heat exchanger with two compartments, and has a first manifold (14) leading into one compartment (16) and a second manifold (15) leading into the other compartment (17), said system comprising a first valve (18) installed in the exhaust circuit (3) and capable of controlling the flow of gases into each of said manifolds (14, 15), and a second valve (20) intended to control the flow of gases at the outlet of the heat exchanger (13). The main technical feature of a system for recovering energy according to the invention is that the first valve (18) can only be used in two positions, a first position wherein same seals the first manifold (14), and a second position wherein same seals the exhaust circuit (3) and only allows the exhaunt gases to flow into the first manifold (14).

Abstract: The invention relates to a valve (1) for regulating the flow of EGR gases in a loop allowing a proportion of the exhaust gases leaving a vehicle combustion engine to be bled off, having a body delimiting an internal duct (2) and comprising a shutter (3) pivot-mounted on an axle (4) dividing said flap (3) into a first part (5) and a second part (6), said flap (3) being able to pivot between an open position that allows gases to pass into the duct (2) and a closed position that prevents said passage, and for which out of the first (5) and second (6) parts, at least one comes into abutment against a support element (7). The first part (5) of the flap has a thickening (9) so as to reduce the passage section for gases between said first part (5) and the support element (7), for angles of opening of said flap (3) that are below a threshold value.

Abstract: The invention relates to a fluid circulation valve (10) having a body delimiting a duct (2) and comprising a flap (3) mounted such that it can pivot on an axis (4) dividing said flap (3) into a first part (5) and a second part (6), said flap (3) being able to pivot between an open position that allows fluid to pass into the duct (2), and a closed position that prevents said passage, and for which the second part (6) of said flap (3) comes into abutment against a seal (7). Said seal (7) has depression means (11, 12) downstream of the second part (6) of the flap (3) in order to increase the force with which said second part (6) is pressed against said seal (7).

Abstract: A three-way valve configured to provide the connection between a gas intake circuit and an exhaust gas recirculation circuit is disclosed. The valve includes a first shutter for regulating the airflow rate, a second shutter for regulating the recirculated exhaust gas flow rate, a single motor for driving the two shutters, and gearing connecting the motor to at least one shutter. The gearing includes functionality to drive the at least one shutter.

Abstract: The invention relates to re-circulated exhaust gas valve for a motor vehicle engine, including a flap (2) and a shaft (7) for driving the flap (2) about an axis of rotation, said flap (2) and said shaft (7) being inserted one inside the other in the area of one or more connecting barrels (5) forming a thermal conduction area between the flap (2) and the shaft (7), the valve being characterized in that said valve includes a cavity (28) configured such as to localize the thermal conduction area axially and set back from a first edge of the flap (2) turned toward an axial end of the shaft (7), which is connected to members for driving the valve.

Abstract: The invention relates to a method for controlling an exhaust gas recirculation circuit (2c) for an internal combustion engine (M) of a motor vehicle. The engine (M) is linked to an air intake circuit (2a) and to a gas exhaust circuit (2b) linked to the air intake circuit (2a) by the recirculation circuit (2c). A first valve (15) controls the flow of air upstream from the recirculation circuit (2c), and gases that are recirculated within the a second valve (16) controls the flow of exhaust recirculation circuit (2c). In the method of the invention, the recirculation of the exhaust gases is in particular controlled by means of measuring a pressure difference across the terminals of the second valve (16).