Abstract:
An intake manifold includes a surge tank and a plurality of inlet pipes extending from the surge tank. Of the inlet pipes, proximal portions of an adjacent pair of inlet pipes are integrated, for example, by being connected with a plate-like connecting portion. The proximal portions of the two adjacent inlet pipes are integrated with a side wall of the surge tank by a reinforcing rib. The reinforcing rib extends, for example, from the connecting portion to the side wall of the surge tank. The intake manifold may be formed by a lower half body and an upper half body, which are welded to each other by using welding margins provided in the half bodies. In this case, it is preferable that parts of each welding margin that are located to correspond to the proximal portions of the inlet pipes be wider than the remainder of the same welding margin.
Abstract:
A system for controlling turbulence in a combustion engine having a composite upper intake manifold and a cylinder head. The system includes a composite housing, a composite cartridge, a shaft, a radial gasket, a lever arm, and a press in place gasket. The composite housing includes an open first end and an open second end. The open second end defines a first cross-sectional area. The first end is configured to be welded to the composite upper intake manifold and the second end has a gasket groove. The second end is configured to be connected with the cylinder head. The composite cartridge is positioned within and removably joined with the second end of the composite housing. The composite cartridge includes a body, a flap valve, and bushings. The shaft connected to the flap valve within the composite housing. The press in place gasket is positioned within the gasket groove.
Abstract:
An intake passage is formed by connecting upper and lower cases 10, 20 of an intake manifold. The lower case 10 has a recessed portion 50 on an inner surface 17a. The recessed portion 50 has a deep surface 53 to which a negative pressure outlet port 42 opens, and an opening 51 is provided in an upper portion of the recessed portion 50. The upper case 20 has a projecting portion 60 extending further downwards towards the negative pressure outlet port 42 than mating surfaces 10a, 20a and projects into the recessed portion 50 through an opening 52. The projecting portion 60 is positioned above the negative pressure outlet port 42 and between the negative pressure outlet port 42 and the inner surface 17a. A lower end portion 63 of the projecting portion 60 is formed into an arc-like shape of which central portion 65 projects downwards.
Abstract:
An intake passage is formed by connecting an upper case 10 and a lower case 20 of an intake manifold. The lower case 10 has a recessed portion 50 on part of an inner surface 17a of a side wall 17. The recessed portion 50 has a deep surface 53 to which a negative pressure outlet port 42 opens, and an opening 51 opened upwards is provided in an upper portion of the recessed portion 50 in a position which opposes to the upper case 20 in a vertical direction A0. The upper case 20 has a projecting portion 60 which extends further downwards towards the negative pressure outlet port 42 than mating surfaces 10a, 20a and projects into the recessed portion 50 through an opening 52. The projecting portion 60 is positioned between the negative pressure outlet port 42 and the inner surface 17a in a horizontal direction A1.
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:
In an intake manifold in which air introduced from an introduction port is fed to each cylinder of an engine by use of multiple ducts which are disposed parallel, a communication space section which provides communication between the introduction port which introduces air and inlets of the ducts is provided, this communication space section is formed so as to extend in a direction in which the inlets of the ducts are arrayed, a funnel section which causes the inlets of the ducts to be arrayed on a same surface is formed in this communication space section, and this funnel section is formed from a single member only in the main body section by providing mating surfaces of the main body section and the duct component member off the funnel section.
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:
A resin intake manifold is provided with two separated bodies manufactured by connecting protrusions of weld portions of the separated bodies to each other in accordance with a vibration welding, and a cover wall in which one of the weld portions is arranged in an inner side or an outer side of the protrusion with leaving space with the protrusion. The protrusions of the weld portions are respectively provided with parallel protrusion portions extending in parallel to a vibrating direction of the vibration welding, and a cover wall arranged at a position in an orthogonal direction to the vibrating direction in the parallel protrusion portions is provided with an extension portion extending to the separated body in the other side welded to the separated body provided with the cover wall, in such a manner as to prevent a burr generated at a time of welding the parallel protrusion portion from getting over the cover wall arranged at the position in the orthogonal to the vibrating direction in the parallel protrusion portion. A recess groove receiving the extension portion is arranged in a side of the other side separated body.
Abstract:
An gas directing/exhaust system and method are provided. The gas directing system has an gas directing mechanism. The gas directing mechanism has different embodiments. In some embodiments, the gas directing mechanism has a first pathway and a second pathway. In other embodiments, the gas directing mechanism has a second pathway and one or more first pathways located inside of the second pathway. In other embodiments, the gas directing mechanism has the first and second pathways and a third pathway inside of the second pathway.
Abstract:
An air duct includes a rigid thermoplastic body having softer elastomeric cuff members welded to the ends thereof. The cuff members comprise an outer sealing component and a weldable insert bonded to at least a portion of the inner surface. The cuff members are adhered to the thermoplastic body at the weldable insert through a spin welding or other suitable welding process. The chemical compatibility between the insert and the thermoplastic body provides a robust weld at the interface.