Abstract: A fuel-cell exhaust system for a fuel-cell arrangement, in particular in a vehicle, includes a fuel-cell exhaust line through which fuel-cell exhaust gas can flow and a condenser having a condenser body through which the fuel-cell exhaust gas can flow. With the condenser, liquid is condensed out of the fuel-cell exhaust gas. A liquid separator is arranged downstream of the condenser.

Abstract: A fuel cell exhaust gas arrangement for a fuel cell system includes a fuel cell exhaust gas line through which fuel cell exhaust gas can flow, and a separating unit through which the fuel cell exhaust gas can flow. The separating unit includes an upstream line portion of the fuel cell exhaust gas line through which the fuel cell exhaust gas can flow in a main exhaust gas flow direction. A downstream line portion of the fuel cell exhaust gas line adjoins the upstream line portion in an opening region. A first liquid outlet opening in the opening region is provided to outlet liquid from the fuel cell exhaust gas flowing through the fuel cell exhaust gas line. A swirl flow generating unit is provided in the upstream line portion.

Abstract: A fuel-cell exhaust arrangement for a fuel-cell system includes an exhaust line, through which exhaust gas can flow, and a muffler through which the exhaust gas can flow. The muffler includes a housing with an inlet region for exhaust gas and with an outlet region for exhaust gas. An upstream line section of the exhaust line adjoins the inlet region for exhaust gas. A downstream line section of the exhaust line adjoins the outlet region for exhaust gas. At least one muffler chamber is formed in the housing. A base of the housing separates at least one liquid-collecting chamber from at least one muffler chamber. At least one liquid-passage opening connecting at least one muffler chamber to at least one liquid-collecting chamber for exchanging liquid is provided in the base. At least one liquid-discharging opening for discharging liquid from the at least one liquid-collecting chamber is provided on the housing.

Abstract: An anti-noise system for influencing exhaust noises propagating through a multi-flow exhaust system includes a controller 80 and at least one actuator. The at least one actuator is disposed in a sound generator 20; 21; 23; 25; 27, connected to the controller 80 for receiving control signals, and adapted to generate sound inside the sound generator 20; 21; 23; 25; 27. The sound generator 20; 21; 23; 25; 27 is connectable to at least two exhaust tracts 60, 61 of the multi-flow exhaust system of the vehicle simultaneously. The controller 80 is configured to generate a control signal that prompts the at least one actuator disposed in the sound generator 20; 21; 23; 25; 27 to cancel sound inside the at least two exhaust tracts 60, 61 of the vehicle's multi-flow exhaust system at least in part and preferably completely.

Abstract: A road vehicle (1) has a drive unit (2) for driving the vehicle (1), a drive unit control device (3) for driving the drive unit (2) and at least one sound generator (4), which has at least one electroacoustic converter (10). The sound generator (4) has an emission pipe (16), which connects the sound generator (4) acoustically and fluidically directly with an emission chamber (17). The an emission chamber (17) emits the sound generated by the converter (10) during the operation of the sound generator (4). Increased reliability of operation is achieved if a generator control device (26) is coupled with the drive unit control device (3) for driving the converter (10) and the generator control device (26) drives the converter (4) as a function of the current operating state of the drive unit (2).

Abstract: An exhaust system, for a vehicle driven by an internal combustion engine, has a system for removing condensate (141) that includes a first line section (110) for fluid connection with exhaust gas (160), at least one second line section (120) for fluid connection with exhaust gas (160), and at least one suction line (130; 131; 132; 136; 137; 138). The suction line (130; 131; 132; 136; 137; 138) is disposed between the bottom (124) of the at least one second line section (120) and the first line section (110), and includes an opening (135) configured to be passed over by exhaust gas (160) passing through the first line section (110).

Abstract: An exhaust system, for a vehicle driven by an internal combustion engine, has a system for removing condensate (141) that includes a first line section (110) for fluid connection with exhaust gas (160), at least one second line section (120) for fluid connection with exhaust gas (160), and at least one suction line (130; 131; 132; 136; 137; 138). The suction line (130; 131; 132; 136; 137; 138) is disposed between the bottom (124) of the at least one second line section (120) and the first line section (110), and includes an opening (135) configured to be passed over by exhaust gas (160) passing through the first line section (110).

Abstract: An anti-noise system for influencing exhaust noises propagating through a multi-flow exhaust system includes a controller 80 and at least one actuator. The at least one actuator is disposed in a sound generator 20; 21; 23; 25; 27, connected to the controller 80 for receiving control signals, and adapted to generate sound inside the sound generator 20; 21; 23; 25; 27. The sound generator 20; 21; 23; 25; 27 is connectable to at least two exhaust tracts 60, 61 of the multi-flow exhaust system of the vehicle simultaneously. The controller 80 is configured to generate a control signal that prompts the at least one actuator disposed in the sound generator 20; 21; 23; 25; 27 to cancel sound inside the at least two exhaust tracts 60, 61 of the vehicle's multi-flow exhaust system at least in part and preferably completely.

Abstract: A road vehicle (1) has a drive unit (2) for driving the vehicle (1), a drive unit control device (3) for driving the drive unit (2) and at least one sound generator (4), which has at least one electroacoustic converter (10). The sound generator (4) has an emission pipe (16), which connects the sound generator (4) acoustically and fluidically directly with an emission chamber (17). The an emission chamber (17) emits the sound generated by the converter (10) during the operation of the sound generator (4). Increased reliability of operation is achieved if a generator control device (26) is coupled with the drive unit control device (3) for driving the converter (10) and the generator control device (26) drives the converter (4) as a function of the current operating state of the drive unit (2).

Abstract: A seamless parison extruded from an extruder via an annular die, passes through a calibrator and coaxially surrounds a probe pipe, which is made to extend through the annular die beyond the calibrator. On the probe pipe there is mounted a sealing element. Ahead of the sealing element, a pressure equal to atmospheric pressure prevails inside the tube and, after the sealing element, a higher pressure than atmospheric pressure prevails. The pressurization is achieved in that a second belt take-off folds together the tube, so that the compressed air fed in through the probe pipe causes a higher tube internal pressure, since the sealing element bears in a sealing manner against the inside of the tube. As a result, a substantial pressure separation is effected at the point of the sealing element.