摘要:
For producing a device for controlling the flow of a medium, having a housing and a flap supported pivotably in it between a closing position and an open position, which flap in its closing position rests with its peripheral region on stop faces of the housing that are present on both sides of the longitudinal axis, to create tightness in the closing position in later operation, the flap is subjected to a force which is selected, taking into account the material comprising the stop faces and the flap, such that the flap with its peripheral region rests on at least one stop face at least substantially with linear contact. The force can be selected such that the housing, in the region of at least one stop face, and/or the flap, in its peripheral region, is permanently deformed. The housing and the flap are of metal.
摘要:
An apparatus for cooling exhaust gas cooling the exhaust gas re-circulated includes an exhaust gas passage; at least one first cooling portion; and at least one second cooling portion, wherein the first cooling portion and the second cooling portion are made of different materials.
摘要:
An exhaust gas cooler and a method of manufacturing an exhaust gas cooler comprising providing a shell, disposing within the shell a tube bundle/core through which exhaust gas passes, and situating a seal or gasket assembly providing a liquid-tight seal between the shell and the tube bundle/core and between each tube of the tube/bundle core.
摘要:
An intake apparatus 100 includes a bore 102 and a throttle valve 104. A coating film 110 in which a lipophilic component and an oil-repellent component are dispersed is formed on at least one of an outer peripheral end surface 104a of the throttle valve 104 and a facing surface 102a of the bore 102 which faces the throttle valve 104.
摘要:
The invention provides, among other things, a heat exchanger including a header, a number of tubes extending outwardly from the header, and an elastic sleeve supported between the header and one of the tubes to allow movement of the tube relative to the header in a direction substantially parallel to a length of the tube defined between a first end of the tube adjacent to the header and a second end of the tube spaced away from the header. Together, the tube, the header, and the elastic sleeve can at least partially define a flow path for a working fluid.
摘要:
A housingless plate heat exchanger including a plate stack defining fluid passages, at least one collecting tank with a peripheral edge enclosing one end of the plate stack, and a valve receivable in the collecting tank through an assembly opening of the soldered collecting tank and plate stack. The collecting tank and plate stack are soldered together and have a fluid opening. A method of manufacturing the heat exchanger includes the steps of assembling plates of the plate heat exchanger in a plate stack, placing a collecting tank on one end of the plate stack, soldering the plate stack and collecting tank together, and after the soldering step mounting a valve in the collecting tank.
摘要:
Exhaust gas feeding device for a internal combustion machine for introducing exhaust gas into a suction channel section of an intake manifold through at least one opening, having an exhaust gas feed section, an exhaust gas feedback valve and an exhaust gas introduction plate that forms a annular channel in the wall region of the suction channel section, wherein the exhaust gas introduction plate is designed as a stamped part with formable webs in such a manner that the webs define a ring channel annular channel with openings in the built-in state of the exhaust gas introduction plate.
摘要:
The invention concerns a protective sleeve for fluid circulation tube made of an interwoven fiber structure formed by a strip (10) of interwoven fibers comprising at least a pocket (11) extending in the transverse direction of the strip (10) and including a spring (13) housed in the pocket (11) and designed, in a stable equilibrium position, to maintain the protective sheath closed by overlapping of the longitudinal edges (10c, 10d) of the strip. The invention is useful in particular for thermal protection of an exhaust gas recycling duct in a motor vehicle.
摘要:
A heat exchanger, in particular an exhaust gas heat exchanger for motor vehicles, has a bundle of tubes through which hot gas flows, a pair of header plates and a housing jacket, which holds the bundle of tubes and the header plates and through which a liquid cooling medium flows. The header plates have openings (8) for receiving tube ends (3a) which are welded to the header plates (2), which are in turn welded to the housing jacket. The header plates (2, 7) are constructed from a plurality of layers of metal sheets which are layered one above another and are fixedly connected together.
摘要:
A double pipe exhaust manifold includes an inner pipe, an outer pipe formed in a cylindrical shape by joining at least one side edge thereof by welding, a space retaining member disposed in an annular space defined between the inner pipe and the outer pipe, a connection pipe connecting to a exhaust gas recirculation valve, and a mesh ring. Opening holes are formed in the inner pipe and the outer pipe so that the opening holes are opposed to each in a radial direction of the pipes. The connection pipe is connected to the opening hole of the outer pipe. The mesh ring is interposed between the inner pipe and the outer pipe in a state that the mesh ring plugs an annular opening part defined between opening edges of the opening holes.