초록 ▼

An air intakesystem for an internal combustion engine. The air intake system includes an intake manifold (24) with a throttle body (22) mounted thereto. The intake manifold (24) and throttle body housing (26) are both formed primarily from a plastic or composite material. A snap-fit joint secures th

An air intakesystem for an internal combustion engine. The air intake system includes an intake manifold (24) with a throttle body (22) mounted thereto. The intake manifold (24) and throttle body housing (26) are both formed primarily from a plastic or composite material. A snap-fit joint secures the throttle body (22) to the intake manifold (24). The joint includes a pair of mounting flanges (46,48), with the throttle body flange (46) including a set of lugs (54), and the manifold flange (48) including cutouts (56) and ramps (58) for receiving the lugs (54). The throttle body flange (46) also includes a loop hook (76) and gasket (52), which mate, respectively, with retention surfaces (84) and a sealing surface (70) on the manifold flange (48). The throttle body (22) also includes a main bore extension (62) with pilots (66) that mate with an entrance region (68) in the manifold (24).

대표청구항 ▼

[ We claim:] [1.] An air intake assembly for use with a vehicle engine comprising:an intake manifold, having an upstream end, and including a main bore extending from the upstream end with an entrance region, at the upstream end of the bore, having a diameter generally larger than the main bore, and

[ We claim:] [1.] An air intake assembly for use with a vehicle engine comprising:an intake manifold, having an upstream end, and including a main bore extending from the upstream end with an entrance region, at the upstream end of the bore, having a diameter generally larger than the main bore, and an integral mounting flange surrounding the entrance region;a throttle body assembly including a throttle body housing having main bore, with an upstream end and a downstream end, and a mounting flange surrounding the main bore of the throttle body generally at the downstream end, and with an integral main bore extension extending downstream of the throttle body mounting flange and having an outer surface, with a plurality of pilots, each raised radially from the outer surface and extending in a generally downstream direction, the pilots sized to fit within the entrance region of the intake manifold in surface contact, whereby the intake manifold main bore and the throttle body main bore are maintained in alignment with one another;mounting means for securing the intake manifold mounting flange to the throttle body mounting flange; andsealing means for sealing between the intake manifold mounting flange and the throttle body mounting flange.