Throttle body with intake manifold snap-fit attachment

Details Throttle body with intake manifold snap-fit attachment Throttle body with intake manifold snap-fit attachment

1997-12-23

1999-03-09

Wolfe, Willis R.

Internal-combustion engines

Engine speed regulator

Specific throttle valve structure

12318461, 251305, 285921, F02D 900

Patent

active

058787151

ABSTRACT:
An air intake system 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).

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