In at least some implementations, a fuel metering valve, includes a bobbin defining a passage and having one or more voids in the surface of the bobbin that defines the passage, aa wire coil around the bobbin and an armature. The armature is received within the passage in the bobbin and movable relative to the bobbin from a first position to a second position when electricity is supplied to the wire coil.

A coupling device (32) provides a rotary coupling of a pivot shaft (18) of a flap diaphragm (16) of an exhaust gas flap (10) with a drive element (34). The pivot shaft is to be rotated about a pivot axis (A). The coupling device (32) includes a first coupling part (36) with a first coupling area configured for coupling with the pivot shaft (18) and a second coupling part (38) with a second coupling area configured for coupling with the drive element (34). The first coupling part (36) and the second coupling part (38) are in a rotary coupling positive-locking meshing state with one another in the coupled state and are supported on one another in the direction of the pivot axis (A).

An engine exhaust system includes a catalytic converter, an exhaust conduit connected upstream of the catalytic converter, and an oxygen sensor extending into the exhaust conduit at a first axial position of the exhaust conduit. A valve is located within the exhaust conduit at the first axial position. The valve includes a movable throttle plate having a bypass notch formed on a periphery of the plate. The valve has an open position, and a closed position in which the bypass notch is placed adjacent to the oxygen sensor to guide exhaust over the oxygen sensor.

A flap device for a motor vehicle comprises a flap housing that can be flowed through by a gas flow; and a flap shaft that is rotatably supported about an axis of rotation in the flap housing by means of at least a first and a second bearing element, which are held at the flap housing, and that carries a flap for selectively blocking or throttling the gas flow. The flap shaft is supported at the first bearing element in a first axial direction via a fixed abutment element that is axially fixedly arranged with respect to the flap shaft. The flap shaft is supported at the second bearing element in a second axial direction, which is oriented opposite the first axial direction, via a movable abutment element that is axially displaceably seated on the flap shaft, with the movable abutment element being preloaded in a direction toward the second bearing element by means of a spring device, and with the spring device in this respect being supported at a support surface fixed to the shaft and thus pressing the fixed abutment element against the first bearing element.

A control method of a butterfly valve of an internal combustion engine, when said internal combustion engine is running, wherein said butterfly valve is controlled by means of a control signal, indicative of an angular position of said valve, the method comprising a step of applying a first limiting filter of a gradient of said control signal, when a ratio between a target pressure downstream of the butterfly valve and a measured pressure upstream of the butterfly valve is greater than a first predetermined threshold.

A throttle device comprises a throttle body, a throttle gear, and a coil spring. The coil spring comprises an intermediate hook part, a return spring part that is wound in one direction from the intermediate hook part, and an opener spring part that is wound in the opposite direction from the intermediate hook part. A gear-side end part of the opener spring part is connected to the throttle gear. The throttle gear comprises a spring guide part that holds the inner circumferential side of the opener spring part. The throttle gear comprises an outer circumferential support part that abuts the outer circumferential side of the first turn of the opener spring part on the intermediate hook part side.

A valve device includes: a housing; a flow channel extending in the housing; a shaft mounted rotatably in the housing, and having a screw bore having a shoulder; a flap, fastened to the shaft, the flap influencing a flow cross section in the flow channel; a screw having a collar, the screw fixedly attaching the flap to the shalt a drive driving the flap via the shaft; and a valve seat in the flow channel, the valve seating having a seal arranged on a radially circumferential edge of the flap, the seal being in contact with the valve seat in a closed position of the flap such that the shaft penetrates the flap at an angle. The collar contacts the shoulder such that, when the screw is tightened firmly, a transmission of force from the collar to the shaft takes place via the shoulder.

An intake device is provided with a throttle body having a valve that can rotate relative to a body, and an intake pipe provided downstream of the throttle body and connected to an internal combustion engine, an intake passage of the intake pipe being provided with a flow adjustment part that guides the air supplied from the throttle body in the direction in which the intake passage extends, and the flow adjustment part being provided to an upstream end that is on the throttle body-side in the intake passage and also being provided so as to connect to an inner peripheral surface of the intake passage at a position of non-contact when the valve is fully open.

A method of forming a flapper assembly (200) for a throttle valve (100) is provided. The method includes steps of forming a flapper (110) comprised of hub (112) having an opening (114) and at least one vane (116a,b) coupled to the hub (112), disposing a shaft (210) in the opening (114), and pressing a punch (P) into an outer surface (112a) of the hub (112) such that a torque dimple (118) extends from the hub (112) into the shaft (210) to fasten the flapper (110) to the shaft (210).

In at least some implementations, a throttle valve includes a valve shaft having an axis and a mounting surface, and a valve head secured to the valve shaft. The valve head has a front face and a rear face closer to the mounting surface than the front face, the mounting surface being located so that a thickness of the valve head between the front face and the rear face is not coincident with the axis. And the axis is closer to the front face than to the rear face, or the axis is coincident with the rear face, or the axis is offset from the front face by more than the distance between the front face and rear face.