Abstract:
Beschrieben wird ein Ansaugkrümmer, insbesondere für Brennkraftmaschinen, bestehend aus einem Basiskörper (110), der eine Vielzahl von halbschalförmigen Längsvertiefungen (11 - 114) aufweist, die sich aneinander aneinanderliegend erstrecken, und aus einem Deckel (122), der Halbschalen (123 - 126) aufweist, die durch Stege (127) miteinander verbunden sind. Gemäss der Erfindung ist zwischen den aneinanderliegenden Vertiefungen (111 - 114) des Basiskörpers (110) ein Kanal (115) gebildet, der dazu bestimmt ist, einen U-förmigen Steg (127) aufzunehmen, dessen Balken (129) für eine Verschweissung mit dem Kanalgrund in Berührung zu bringen ist, und dessen Schenkel (128) Verlängerungen der Berührungsfläche der Halbschalen (123 - 126) bilden.
Abstract:
The invention relates to reduced-noise devices or the components thereof, particularly engine units or combustion units and the components thereof or fluid circulatory systems and components thereof which are partially or completely composed of thermoplastic synthetic material and which are provided with at least one perforated plate arranged at a distance from the surfaces of the devices, said perforated plate being rigidly fixed and disposed in a substantially positive fit on continuously revolving projections of the thermoplastic component, enveloping the devices either partially or fully.
Abstract:
The invention describes a plastic embodiment for a suction system, whereby various configurations of said embodiment can be produced at low cost. According to the invention, a modular structured suction system is created. Said system comprises a plastic air distributor module which can be connected to an air feed pertaining to an internal combustion engine; several plastic, single-pieced suction pipe modules, whereby one end of the suction pipes is joined to the air distributor module and the suction pipes are respectively allocated to a combustion chamber of the internal combustion engine; in addition to at least one plastic single-pieced flange module that is connected to the other end of the suction pipe of at least one suction pipe module and which can be secured to the internal combustion engine.
Abstract:
The invention relates to an induction port with an optimal noise level, especially a suction pipe for use as an induction port of an internal combustion engine. The noise level is optimised by introducing shunt resonators (16, 18) in the collecting chamber (12) of the suction pipe. Said suction pipe is produced using a multi-shell technique. The inserted structures (16, 18) can be stuck or welded before the shells are joined. The inventive shunt resonators (16, 18) require little space and can also be used for subsequently optimising the suction pipes in the test phase, should the test results be acoustically unsatisfactory.
Abstract:
The invention relates to a hollow plastic part (6) which is composed of at least two plastic shells (1, 1'), wherein the plastic shells (1, 1') are welded together over a respective edge (4, 4') along at least one joining plane (5), and wherein each plastic shell (1, 1') has at least a first component (2) and a second component (3). What is essential to the invention is that the two components (2, 3) are formed from different plastics, wherein the plastic of the first component (2) has a lower melting temperature than the plastic of the second component (3), and that the first component (2) with the lower melting temperature extends on at least one plastic shell (1' 1') in a caterpillar-like manner along at least part of the edge (4, 4') of the second component (3) of this plastic shell (1, 1'). It is thereby possible to significantly simplify the manufacturing process.
Abstract:
A method for manufacturing an engine intake manifold assembly (1) is provided. The method includes forming a top (10), middle (20), and bottom (30) section of the manifold assembly (1) in an injection molding process, each including cavities (14, 28, 32) defined with positive draft angles, the cavities (14, 28, 32) defining a plurality of internal passageways in an assembled state of the manifold assembly (1). The top (10), middle (20), and bottom (30) sections are joined to form the manifold assembly (1) through vibration welding or ultrasonic welding. An engine intake manifold assembly (1) having top (10), middle (20), and bottom (30) sections joined through vibration welding or ultrasonic welding is also provided.
Abstract:
The present invention provides an improved bonding system including an adhesion promoter that may be used to help adhesively bond two or more components together. The preferred use of the present adhesion promoter is in a transportation vehicle (e.g., automobile), and more particularly in an engine assembly for use in such vehicles. The present invention includes a bonded automobile engine assembly including at least one plastic component, an adhesive that bonds the plastic component to at least one separate component, and an adhesion promoter between the adhesive and the plastic component. Fasteners for attaching components are optionally employed. In one specific example, an intake manifold including a plastic component is bonded to an engine assembly.
Abstract:
An engine intake manifold assembly (10) including a first portion (12) configured with a first material and a second portion (14) configured with a second material, wherein the first and second portions (12, 14) are adhesively bonded together. Preferably, the intake manifold assembly (10) is additionally configured with a cylinder head flange (24), for mounting the same to an automotive engine component, and a throttle body attachment (22) for attachment of a throttle body component. The cylinder head flange (24) and throttle body attachment (22) may be an integral component of the first or second portions (12, 14) or attached to the same during or after assembly of the first and second portions (12, 14). Optionally, an insert (18) is located between the assembled first and second portion (12, 14) to create one or more plenums thereby creating one or more air flow paths (20) through the intake manifold assembly (10).
Abstract:
A co-injection molded air intake manifold shell comprises an inner and outer skin layer separated by a sound absorbing or sound insulation core. Each skin layer is composed of a polyamide resin which, optionally, contains glass fiber reinforcement and high specific gravity fillers such as barium sulfate or tungsten. The sound insulating core is composed of a high density material having a foam structure, such as a polyamide resin. Skin layers are provided with a plurality of pockets to permit distribution of localized lumped masses at predetermined locations tailored to increase noise transmission losses. A single layer air intake manifold shell having non-uniform thickness is also provided. The thickness of the single layer air intake manifold shell is larger over preselected noise sources of larger amplitude to maximize noise attenuation for a nominal air intake manifold shell thickness.