摘要:
An exhaust gas purification system of the present invention includes, as an exhaust gas path 30 of an engine 25 to be mounted in a ship 1, a main path 31 which is in communication with outside, a bypass path 32 which branches off from a halfway portion of the main path 31, and a combined casing 33 with which both the main path 31 and the bypass path 32 are in communication. A selective catalyst reduction device 34, 35 is accommodated in the combined casing 33 at a location close to the main path 31. A path-switching member 37, 38 which switches exhaust gas moving direction is placed in a branched portion 53 between the main path 31 and the bypass path 32. A reducing agent injection body 61 is placed in the main path 31 between the path-switching member 37 and the combined casing 33.
摘要:
An object is to provide an exhaust-gas purification device that is capable of uniformly mixing exhaust gas and a reduction agent together without being affected by the routing of an exhaust pipe of an internal combustion engine. An exhaust-gas purification device (1) includes an urea water injection nozzle (2) that is provided inside an exhaust pipe (14) and a catalyst reactor (12) that is provided on a downstream side of the urea water injection nozzle, and is configured to inject urea water from the urea water injection nozzle (2) into exhaust gas of an engine (18) and to reduce nitrogen oxide in the exhaust gas by a NOx catalyst (13) contained in the catalyst reactor (12), where the urea water injection nozzle is disposed in such a way as to inject the urea water from the axial center of the exhaust pipe toward the downstream side of the flow direction of the exhaust gas, and a mixer (11) is connected to an upstream end of the catalyst reactor, the mixer having a plurality of plate members (11b) radially disposed around the axial center of the exhaust pipe, the plate members each being formed in such a way that angles of plate surfaces (A, B) of the plate member to the flow direction of the exhaust gas are different values on the upstream side and the downstream side.
摘要:
Die Erfindung bezieht sich auf ein Auspuffsystem für ein Arbeitsfahrzeug, mit einem Motor (50), einer Auspuffleitung (54) des Motors (50) und einem mit der Auspuffleitung (54) verbindbaren Schalldämpfer (72). Es wird eine mit der Auspuffleitung (54) verbindbare Umgehungsleitung (70) und eine Ventileinrichtung (56) vorgeschlagen, die zwischen der Auspuffleitung (54) und dem Schalldämpfer (72) angeordnet und betreibbar ist, die Umgehungsleitung (70) während des Betriebs des Arbeitsfahrzeugs auf einer Straße zu schließen und die Umgehungsleitung (70) während des Betriebs des Arbeitsfahrzeugs auf einem Feld zu öffnen.
摘要:
The invention relates to a flow switch comprising a feed channel (1), a Coanda tulip (5), at least two outlets (11 and 12) and a displacement body (6) which is arranged in the area of the Coanda tulip (5) and is provided with a flow surface (7) and a casing (8). The position of the flow surface (7) can be changed in the direction of flow.
摘要:
In a pressure fluid control valve device, the fluid exhausted from an internal combustion engine flows through a pair of paths selectively or simultaneously.Each of the paths is opened and closed by a butterfly valve (12,13) fixed to a valve shaft. A coupling for connecting the valve shafts across the paths comprises a slitting recess (9a) and a projection (10a) provided at the opposing ends of the valve shafts respectively. The direction of the surface of the recess and the projection is set to within 30 degrees with respect to the direction of the surface of the valve disc fixed to the valve shaft having the recess. Thus, the corner of the recess is not engaged with the bearing surface which is loaded, thereby making axial length for connecting the valve shafts to zero to manufacture the light and compact device.
摘要:
Method and system for removal of soot, ash and heavy metals, and optionally additionally NOx and SOx being present in exhaust gas from an engine operated on heavy fuel oil.