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US 8,006,489 B2Granted
Exhaust diffuser for a vocational truck
AssigneeVolvo Group North America, LLC
InventorsHugh Thomas Dickinson, Clinton Lane Lafferty, Rayvonn Donnell Core
Life of this patent
Estimating the term…
Abstract
An exhaust diffuser for a truck includes a chamber mountable on a truck exhaust stack pipe. The chamber has a cross sectional area much greater than the cross sectional area of the exhaust pipe, and has a dispersing element disposed in the line of exhaust flow to divert exhaust gases laterally into the chamber volume. One or both of the top and front side walls are formed as a mesh or screen to allow the dispersed exhaust gases to flow outward away from the truck cab in a diffused area.
Claims5
A diffuser for an engine exhaust, comprising:
- a chamber configured to be mounted on a top end of an exhaust stack pipe, the chamber enclosed by a bottom wall, a top wall and a peripheral wall, the chamber having an axial direction perpendicular to the top wall and bottom wall, the bottom wall being formed as a solid wall having an inlet opening to couple with an engine exhaust conduit, the peripheral walls wall being formed as with a first portion as a mesh to form an exhaust outlet and a second portion being solid to prevent exhaust flow there through, the chamber being sized to allow exhaust gas to expand therein;
- and, a dispersing element mounted in the chamber and disposed relative to the inlet opening to divert inflowing exhaust gas from the axial direction to facilitate exhaust gas expanding in the chamber.
Dependencies are inferred from the claim text.