A coupling arrangement is disclosed for the rotational coupling of a drive element of a pivoting drive of an exhaust-gas flap for the exhaust-gas flow of a combustion engine to a pivot shaft rotatable about a pivot axis. A first coupling element has a coupling region coupled to a pivot shaft for rotation about the pivot axis. A preload element generates a force acting on the first coupling element and the second coupling element in a peripheral direction with respect to one another and generates a force acting in an axial direction between the coupling elements. One of the coupling elements includes two radially outwardly extending rotational coupling projections and the other coupling element includes a rotational coupling cutout receiving the projection. The one coupling element is held axially on the other coupling element by the preload element to prevent the projections from moving out of the cutouts.

A coupling arrangement is disclosed for the rotational coupling of a drive element of a pivoting drive of an exhaust-gas flap for the exhaust-gas flow of a combustion engine to a pivot shaft rotatable about a pivot axis. A first coupling element has a coupling region coupled to a pivot shaft for rotation about the pivot axis. A preload element generates a force acting on the first coupling element and the second coupling element in a peripheral direction with respect to one another and generates a force acting in an axial direction between the coupling elements. One of the coupling elements includes two radially outwardly extending rotational coupling projections and the other coupling element includes a rotational coupling cutout receiving the projection. The one coupling element is held axially on the other coupling element by the preload element to prevent the projections from moving out of the cutouts.

A coupling arrangement is disclosed for rotationally coupling a drive element of a pivoting drive of an exhaust-gas flap for the exhaust-gas flow to a pivot shaft that is rotatable about a pivot axis. A first coupling element has a coupling region coupled to the pivot shaft for conjoint rotation about the pivot axis and a second coupling element has a coupling region coupled to the drive element for conjoint rotation about the pivot axis. A preload element acts on the first coupling element and the second coupling element substantially in a peripheral direction with respect to one another. One of the coupling elements has two rotational coupling projections which extend radially outward with respect to the coupling region of the coupling element. The other coupling element includes, so as to be assigned to each rotational coupling projection, a rotational coupling cutout which receives the corresponding rotational coupling projection.

A throttle apparatus includes a throttle body (12), a throttle valve (13), a throttle shaft (14), an electrically driven motor (15), a drive gear (23), a driven gear (24), a middle gear (25), and a sensor block (19). The middle gear (25) is held by the throttle body (12) such that a gear shaft is displaced from an imaginary straight line (V) connecting together a motor shaft and the throttle shaft (14). A gear arrangement projection part (34) that projects outward by a displacement amount of the middle gear (25) and a connector arrangement projection part (35) that projects to a same side as the gear arrangement projection part (34) at a position adjacent to a motor housing part (12b) side of the gear arrangement projection part (34) are formed on an outer surface of the throttle body (12). The motor connector (36) is arranged on the connector arrangement projection part (35) such that the motor connector (36) is in parallel with an axis center of the motor shaft and faces another end side of the throttle body (12). The sensor connector (20) is arranged on the sensor block (19) such that the sensor connector (20) is directed toward the axis center from a direction that is orthogonal to the axis center of the motor shaft.

An object of the present invention is to provide an electronically controlled throttle device having a structure in which a resin cover is separated into a cover body portion and a connector portion, and has improved watertightness without increasing the size of the device. The electronically controlled throttle device of the present invention includes a motor 2, a throttle valve 4, a chassis 1, a resin cover 12, and a circuit board 104. The resin cover 12 has a first cover portion 12-1, a second cover portion 12-2, and a conductive wire 22 provided at a connection portion between the first cover portion 12-1 and the second cover portion 12-2. The connection portion is joined by forming a molten portion 23 around the conductive wire 22.

In at least some implementations, a charge forming device includes a body that has a throttle bore, a throttle valve associated with the throttle bore, a coupler and an actuator. The throttle has a valve head received within and movable relative to the throttle bore, and a valve shaft to which the valve head is coupled. The coupler is connected to the valve shaft and carries or includes a sensor element. And the actuator has a drive shaft coupled to the coupler so that rotation of the drive shaft is transmitted to the coupler and the valve shaft.

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.

Heat recovery component for an exhaust gas system of an internal combustion engine, comprising an inlet, an outlet, a heat recovery branch conduit comprising a heat recovery branch conduit inlet, a heat recovery branch conduit outlet, and a heat exchanger arranged in the heat recovery branch conduit, a bypass branch conduit being separate from the heat recovery branch conduit, and a valve being configured to be rotatable between a heat recovery end position and a bypass end position, the valve being arranged to be rotatable around a rotation axis located in the bypass branch conduit, wherein the valve comprises a bypass valve flap and a heat recovery valve flap, the bypass valve flap and the heat recovery valve flap being operatively connected by a support.

A rotary control valve that includes a valve body, a valve shaft disposed within a bore of the valve body, a first valve seat disposed within the valve body, a first control element carried by the valve shaft, and a first pressure labyrinth at least partially defined by the first control element. The first control element is movably disposed in the first opening between a closed position, in which the first control element sealingly engages the first valve seat, thereby closing the first opening, and an open position, in which the first control element is spaced from the first valve seat, thereby opening the first opening. When the first control element is in the closed position, the first pressure labyrinth is configured to cause a pressure drop in fluid flowing therethrough, thereby minimizing an internal leak rate of the rotary control valve.

A general engine throttle apparatus includes a throttle body 12, a throttle valve 13, a throttle shaft 14, a driven gear 24, an electrically driven motor 15, and a detected body block 26. The throttle valve 13 opens and closes an intake air introduction hole 11. The throttle shaft 14 holds the throttle valve 13 and is rotatably supported by a holding hole 16 of the throttle body 12. The electrically driven motor 15 transmits a rotation operation force to the driven gear 24. The detected body block 26 is attached to another end part in an axial direction of the throttle shaft 14, and a state of the throttle shaft 14 is detected by a sensor. The driven gear 24 is integrally formed on one end side in the axial direction of the throttle shaft 14. The detected body block 26 is formed to have a maximum outer diameter that is smaller than a minimum inner diameter of the holding hole 16.