Abstract:
The present invention relates to an intake manifold or distributor for a thermal engine constituted by at least two parts (1, 1') assembled together, in particular two parts made from thermoplastic material assembled by vibration welding and comprising an intake or plenum chamber connected, for fluidic communication, to intake pipes opening into the chamber. Intake manifold or distributor for a thermal engine characterised in that it comprises an additional attached piece (4) comprised, on the one hand, of a main body forming a support and fitting plate and, on the other hand, of pipe portions (6, 6') produced in one piece with said body (5) and defining at least the inlet orifices (6, 6') of said pipes (3), said attached piece (4) being positioned and, if applicable, fixed, prior to assembly of said at least two parts (1, 1') forming said manifold or distributor on or in one of these parts.
Abstract:
An air intake, especially for internal combustion engines with a V-shaped cylinder arrangement, which is composed of two units (16a, 16b). From the two units (16a, 16b) extend the intake ducts (19a, 19b), each associated with one cylinder bank (11) of the internal combustion engine. By dividing the air intake device into two units (16a, 16b), the unit (16a) can be mounted first on the internal combustion engine, a free space (20) for the mounting tool being necessary. Then the unit (16b) is placed and bolted on, the air intake ducts (19b) being able to run through the free space (20) in the hatched area (23), since the unit (16a) is already installed. The advantage of this air intake tube configuration is a substantially greater geometric freedom of design.
Abstract:
The invention relates to an intake device for an internal combustion engine. Said device comprises a mounting flange (10) for mounting to a cylinder head of an internal combustion engine, in addition to several intake manifolds (11-14) which open into a common collective chamber. The mounting flange (10) and upper shells (23, 24, 25, 26) form a first component. Lower shells (27, 28, 29, 30) form a third component. A central component (31) is provided between these two components, whereby the components are connected to one another in such a way that the second component is fixed to the first component by a positive-fit and the third component is fixed to the second component in the same way. The components are preferably fixed together by friction-welding.
Abstract:
The invention relates to a method for linking two plastic components. According to the inventive method, the first component (2) is provided in at least one connecting section at which the link with the second component (6) is to be established with a heating element (18) that can be heated by induction. The second component (6) is fastened to the first component (2) in such a manner that both components (2, 6) contact the heating element (18). An induction welding step is performed in which the heating element (18) is heated to such a temperature that both components (2, 6) melt and fuse in the zone surrounding the heating element (18). The aim of the invention is to provide a method for establishing a firm connection between components (2, 6) that consist of plastic materials of very different viscosity. To this end, the connecting section (12) is configured in the form of a feather-and-tongue plug-in connection. The plug-in connection is provided with sealing means which render the space in the tongue (15) impermeable vis-à-vis the molten material. The heating element (18) is accommodated in said space. A force acts upon the components (2, 6) that prevents them from being displaced contrary to the plug-in direction.
Abstract:
The inventive hollow patterns are made from preformed parts (3, 4) positively engaged with the joining edges (5.1, 5.2). In order to join two preformed parts (3, 4) by preformed portions (3, 4) along their joining edges (5.1, 5.2), raws of spaced linking elements with grooves (7) running parallel to the joining edges are provided which are turned in the direction opposite the joining one and form a staggered arrangement, so that the linking elements (1) of one preformed part engage the spaces provided between the linking elements (2) of the other preformed part (4), and the grooves (7) define together a channel (8) in which the holding element (6) passes. The preformed parts may be, for example, plastic injection moulded parts, including duct patterns for automotive engines.
Abstract:
A composite plastics structure in the form of two parts of an inlet manifold housing (11) is formed by joining a first component (16) to a second component (17) at a pair of abutting non-planar joint faces (27, 28) indicated by a joint line (18). Lands (37, 38, 39 and 40) on the joint faces define gaps which are substantially eliminated when tongue (29) on the first component is welded to an abutment surface (33) on the second component by vibrating one component relative to the other. Where the joint face is inclined to a clamping force the projecting distance of the tongue is reduced. The first component is more flexible than the second component to permit the joint faces to conform under the clamping load.
Abstract:
Die Erfindung betrifft ein Luftleitungsrohr für den Ansaugtrakt eines Verbrennungsmotor, vorzugsweise Turbomotors, aufweisend ein erstes Rohrbauteil aus einem ersten Material und ein zweites Rohrbauteil aus einem zweiten Material, dadurch gekennzeichnet, dass das erste Material flexibler ist als das zweite Material.
Abstract:
A frictional weld joint couples together first and second body portions of an article. The first body portion has a first nominal wall thickness and a first joint surface. The second body portion has a second nominal wall thickness and a second joint surface. A total bead height is defined between the joint surfaces. A first bead extends from the first joint surface defining a first bead height. A second bead extends from the second joint surface and is coupled to the first bead. A final second bead height is defined between the first bead and the second joint surface. A ratio of the first bead height to the final second bead height is of from about 0.40 to about 1.70. A ratio of the total bead height to at least one of the first and second nominal wall thicknesses is equal to or less than 6.00.