Abstract:
A fluid guideline with at least two structural elements made of substantially soundproof material has at least one opening for sound damping. An impedance change (in particular in the form of an impedance discontinuity) of the flow resistance of the fluid flowing through the fluid guideline is present between two adjacent structural elements, and the at least one opening is arranged in the region of the impedance change between two adjacent structural elements.
Abstract:
An engine intake manifold assembly (10), including a first component (12) having a first mating surface (14) and a second molded plastic component (16) having a second mating surface (18). The second molded plastic component (16) is adhesively bonded to the first component (12) with an adhesive (20). The adhesive bond strength exceeds the strength of the second molded plastic component (16).
Abstract:
An internal combustion engine intake device is configured to improve the uniformity with which purge gas or other introduced gas is distributed to the cylinders of an engine. The intake device basically has a throttle chamber, an intake air collector, an air induction pipe, a partitioning part and a gas introducing pipe. The air induction pipe is provided between the throttle valve and the intake air collector. The partitioning part divides the space inside the air induction pipe into first and second air induction spaces. The gas introducing pipe is configured and arranged to introduce purge gas into the space inside the air induction pipe at a position between the throttle valve and the partitioning part. In one embodiment, the partitioning part is configured such that an upstream portion thereof is slanted with respect to a rotary shaft of the throttle valve.
Abstract:
An air inlet module incorporating, in one structural unit, on the one hand, a supply manifold, on the other hand, an exhaust gas reinjection circuit and, finally, a gas/liquid heat exchanger designed to cool the exhaust gases, the module consisting of a sealed assembly of at most four parts, namely, a first part comprising the inlet manifold, the outlet manifolds, a portion of the supply conduit, and a hollow body forming the tank of the exchanger, a second part comprising the many circulation manifolds and a support body for assembling said manifolds in the tank, and a third part of which one portion forms a cover for the hollow open container and comprising several conduit portions forming at least partially the exhaust gas circulation circuit and conveying these gases to the inlet manifold, also incorporated in said third part.
Abstract:
An example plastic intake manifold is assembled with an inner shell received within an outer shell. The method of assembling the outer shell to the inner shell comprises a localized thickness that defines a desired laser weld joint along which laser energy is utilized to form the desired joint between the outer shell and the inner shell. The method also provides for completing a desired weld around an interfering protrusion on an outer surface of the outer shell.
Abstract:
The invention relates to a suction device for an internal combustion engine provided with a first manifold (1) having a slot (3). A first suction line (5) is extended from an input orifice (7) which enters the first manifold (1) to an output orifice (9) which connects the first suction line (5) to the suction line of a cylinder head of the internal combustion engine. The inventive device also comprises a second suction line (11) and a second manifold (13) provided with a second slot (15) which are orientable and interconnectable. When the second suction line is in the first pivoting position, intake air passes through the first slot (3) to the first manifold (1) and afterwards, flows to the first suction line (5). When the second suction line is in a second pivoting position, the first and second slots (3, 15) are hermetically connected to each other in such a way that intake air passes through the first slot (3) and directly through the second slot (15) in order to enter the second manifold (13) and afterwards, to flow to the first suction line (5) crossing the second suction line (11).
Abstract:
An intake arrangement for an internal combustion engine, including an intake manifold including an intake collector disposed above the engine body, a plurality of branch pipes extending from the intake collector to an intake side of the engine body over above the engine body in a curved state, and a connecting wall disposed between the branch pipes. The branch pipes extend in a direction substantially perpendicular to a longitudinal direction of the intake collector and are arranged with space between adjacent ones of the branch pipes. The connecting wall covers the space between the adjacent ones of the branch pipes and coextends with the branch pipes. The connecting wall has an outside air introducing opening opposed to the intake side of the engine body.
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:
The intake manifold assembly comprises three blocks each molded from a plastic material by injection molding, the three blocks consisting of a first block defining a half of the surge tank, a second block defining a half of the individual intake pipes and a third block defining a remaining half of the surge tank and a remaining half of the individual intake pipes. Thereby, the intake manifold assembly may be provided with various features for defining a pair of intake pipe sections arranged in a mutually parallel relationship while being made to be suitable for an injection molding process. Because the surge tank are defined by the first and third blocks while the individual intake pipes are defined by the second and third blocks, the intake manifold assembly essentially consisting of three blocks can internally define essential features required for a dual port intake device without requiring additional component members.
Abstract:
Laser welding of plastic involves a laser passing through laser translucent then laser absorbent material. A technical description as envisaged here is Laser Contour Welding. Universally, laser welding is done by Quasi simultaneous techniques and rarely by Contour techniques. Regular or symmetrical parts, under 5 inches are welded by Quasi simultaneous. Asymmetric and large parts are best welded by Contour Welding. Kinematics of robots permits a complex contour. Automotive plastic manifolds exceed 5 inches with asymmetry. The pairing of robot contour and laser welding facilitates a new Automotive manifold. It requires a new split line for laser access and manufacturing as described. Encompassing the above requirements and solutions can reduce the moldings for a V8 to 2 major operations.