Intake manifold
First Claim
1. An intake manifold, comprising:
- a plenum fluidically coupled to one or more runners;
an inlet positioned upstream the plenum and including a first indentation protruding radially inward in a first direction and a second indentation protruding radially inward in a second direction substantially anti-parallel to the first direction, the inlet having a cross-section of two conjoined circular pipes that join at the first indentation and the second indentation; and
wherein an inlet wall thickness is maintained at the first and second indentations.
1 Assignment
0 Petitions
Accused Products
Abstract
Various systems for reducing noise, vibration, and harshness in an intake manifold are provided. In one example, an intake manifold includes one or more runners, a plenum fluidically coupled to the one or more runners, an inlet having a wall thickness, and a first and a second indentation, where the first indentation protrudes radially inward at a first inflection point in a first direction, the second indentation protrudes radially inward at a second inflection point in a second direction substantially anti-parallel to the first direction, and the wall thickness is maintained at the first and second inflection points. In this way, noise, vibration, and harshness associated with the intake manifold and its inlet may be reduced without additional weight, cost, or complexity.
21 Citations
20 Claims
-
1. An intake manifold, comprising:
-
a plenum fluidically coupled to one or more runners; an inlet positioned upstream the plenum and including a first indentation protruding radially inward in a first direction and a second indentation protruding radially inward in a second direction substantially anti-parallel to the first direction, the inlet having a cross-section of two conjoined circular pipes that join at the first indentation and the second indentation; and wherein an inlet wall thickness is maintained at the first and second indentations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A system, comprising:
-
a throttle body; and an intake manifold having an inlet runner located upstream a plenum and coupled adjacent to the throttle body, the inlet runner having walls with first and second indentations, the first and second indentations ending at locations farther from an inlet seal than an intersection of a runner leading to a cylinder from the plenum and a wall of the inlet runner, the runner leading to the cylinder from the plenum a closest runner to the inlet seal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. A system, comprising:
-
a throttle body; and an intake manifold having an inlet located upstream of a plenum and coupled to the throttle body, one or more runners fluidically coupled to the plenum, a plurality of ribs extending along an exterior surface of the inlet, and a top shell and a bottom shell oppositely joined together to thereby form the intake manifold, a first tube and a second tube each fluidically coupled to the intake manifold, the inlet having a centrally double tapered cross-section with a first indentation and a second indentation, each indentation extending radially inward opposite one another to reduce noise and vibration, the centrally double tapered cross-section viewed in a same plane as a cross-section of a central axis of the inlet, the first and second indentations extending longitudinally in a longitudinal direction of the inlet, the one or more runners not having a double-humped cross-section, and a plurality of vanes proximate the inlet and upstream of the centrally-tapered cross-section.
-
Specification