A valve assembly for an exhaust system of a vehicle comprises a housing defining an inlet, an outlet, and a longitudinally extending exhaust gas passageway in fluid communication with the inlet and the outlet. The valve assembly further comprises a valve flap disposed in the housing and rotatable between a first position restricting exhaust gas flow through the exhaust gas passageway, and a second position whereat exhaust gas flow through the exhaust gas passageway is less restricted. A mass damper is disposed within the exhaust gas passageway and attached to the valve flap. The mass damper includes end portions and an intermediate portion disposed between the end portions with the intermediate portion having a thickness that is greater than a thickness of the end portions. The mass damper is positioned proximate an inner surface of the housing and positioned between the valve flap and the housing when the valve flap is at the second position.

An improved pipe exhaust cut-out that is adapted to be controllably opened and completely closed thereby sealing the exhaust pipe cut-out. The improved pipe exhaust cut-out incorporates a remotely controlled linear actuator.

A valve device for a fuel cell arrangement in a motor vehicle includes: a housing; a flow channel extending in the housing; a flap configured to influence a flow cross-section in the flow channel; a shaft to which the flap is attached, the shaft being rotatably supported in the housing; a drive configured to drive the flap via the shaft; a valve seat arranged in the flow channel; and a seal including polytetrafluoroethylene (PTFE) arranged on a radially peripheral edge of the flap, the seal being configured to contact the valve seat with the flap In a closed position of the flap, so that the shaft passes through the flap at an angle. The seal includes a spring.

A valve device for a fuel cell arrangement in a motor vehicle includes: a housing; a flow channel that extends in the housing; a spindle mounted rotatably in the housing; a flap fastened to the spindle, the flap being arranged in the flow channel and configured to close off the flow channel, the flap having a bore via which bore the spindle penetrates the flap; a drive configured to drive the flap via the spindle; a valve seat arranged in the flow channel, the valve seat, in a closed position of the flap, being in contact with the flap, wherein the spindle penetrates the flap at an angle and openings of the bore each lead to one side of the flap; and a seal arranged In the bore between the flap and the spindle.

A valve assembly for an exhaust system of a vehicle comprises a housing defining an inlet, an outlet, and a longitudinally extending exhaust gas passageway in fluid communication with the inlet and the outlet. The valve assembly further comprises a valve flap disposed in the housing and rotatable between a first position restricting exhaust gas flow through the exhaust gas passageway, and a second position whereat exhaust gas flow through the exhaust gas passageway is less restricted. A mass damper is disposed within the exhaust gas passageway and attached to the valve flap. The mass damper includes end portions and an intermediate portion disposed between the end portions with the intermediate portion having a thickness that is greater than a thickness of the end portions. The mass damper is positioned proximate an inner surface of the housing and positioned between the valve flap and the housing when the valve flap is at the second position.

A valve assembly for an exhaust system of a vehicle. The valve assembly includes a housing, a valve flap and a mass damper. The housing defines an inlet, an outlet, and a longitudinally extending exhaust gas passageway in fluid communication with the inlet and the outlet. The valve flap is disposed in the housing and is rotatable between a first position restricting exhaust gas flow through the exhaust gas passageway, and a second position whereat exhaust gas flow through the exhaust gas passageway is less restricted. The mass damper is disposed within the exhaust gas passageway. The mass damper is attached to the valve flap and comprise of a material having a high density. The mass damper is shielded from the exhaust gas flowing through the exhaust gas passageway when the valve flap is in the second position.

A valve assembly for an exhaust system of a vehicle. The valve assembly includes a housing, a valve flap and a mass damper. The housing defines an inlet, an outlet, and a longitudinally extending exhaust gas passageway in fluid communication with the inlet and the outlet. The valve flap is disposed in the housing and is rotatable between a first position restricting exhaust gas flow through the exhaust gas passageway, and a second position whereat exhaust gas flow through the exhaust gas passageway is less restricted. The mass damper is disposed within the exhaust gas passageway. The mass damper is attached to the valve flap and comprise of a material having a high density. The mass damper is shielded from the exhaust gas flowing through the exhaust gas passageway when the valve flap is in the second position.

An air intake apparatus of an internal-combustion engine includes: an air intake passage communicating with a combustion chamber; an air intake flow control valve including a rotation shaft provided in the air intake passage and a valve body having a convex arc-shaped outer peripheral surface and opening and closing a main opening portion of the air intake passage, and controlling the intake air when the main opening portion is closed; a valve body storage portion provided in the air intake passage to have a concave arc shape corresponding to the valve body and storing the valve body when the main opening portion is opened; and a sub-opening portion provided between the outer peripheral surface and an inner surface of the valve body storage portion, allowing a portion of the intake air to pass therethrough and discharging the portion toward the intake air when the main opening portion is closed.

This valve device is provided with: a body (10) that has at least one passage (11, 12) for passing a fluid and valve shaft holes (13, 14, 15); a valve shaft (20), which is passed through the valve shaft holes so as to be rotatable; and butterfly valves (30, 40), which are fixed on the valve shaft and are for opening and closing the passages (11, 12). The butterfly valves (30, 40) are disposed so as to close the passages (11, 12) on a downstream side or an upstream side of the valve shaft holes (13, 14, 15) in a flow direction of the fluid. As a result, it is possible to prevent fluid leakage and achieve effective utilization of exhaust heat in an exhaust heat recovery system.

A supercharger includes a first introduction part having a first flow channel; a second introduction part having a second flow channel; a chamber into which the exhaust gas is introduced; an outlet part having one or a plurality of outlet flow channels; and a valve member housed in the chamber. The chamber has a first introduction port that leads to the first flow channel, a second introduction port that leads to the second flow channel, and one or a plurality of outlet ports that lead to the outlet flow channel. A main circulation space is secured. The valve member is capable of opening or closing, and allows two or more opened ports among the first introduction port, the second introduction port, and the outlet port to communicate with each other through the main circulation space.