Flow diffuser for exhaust pipe
AssigneePACCAR Inc
InventorPaul J. Troxler
Life of this patent
Estimating the term…
Abstract
A flow diffuser for vehicles of the type having an engine and an exhaust pipe generally includes a substantially tubular body having an outer surface and a first end configured for attachment to an exhaust pipe. The flow diffuser further includes a diffusion portion including at least one channel having a root end located near the outer surface, an exit port, and a channel axis extending between the root end and the exit port, the channel increasing in flow area along the channel axis to reduce exhaust gas velocity.
Claims14
A flow diffuser for vehicles of the type having an engine and an exhaust pipe, the flow diffuser comprising:
- (a) a substantially tubular body having an outer surface and a first end configured for attachment to an exhaust pipe;
- and
- (b) a diffusion portion including at least one channel having a root end located near the outer surface, an exit port, and a channel axis extending between the root end and the exit port, the channel increasing in flow area along the channel axis to reduce exhaust gas velocity.
A flow diffuser for vehicles of the type having an engine and an exhaust pipe, the flow diffuser comprising:
- (a) a substantially tubular body having an outer surface and a first end configured for attachment to an exhaust pipe;
- and
- (b) a diffusion portion including a plurality of channels, each having a root end located near the outer surface, an exit port, and a channel axis extending between the root end and the exit port, each of the plurality of channels increasing in flow area along the channel axis to reduce exhaust gas velocity, wherein the diffusion portion includes fluid passageways for the passage of surrounding air between adjacent channels and wherein each exit port has a shape factor of less than about 0.7.
A flow diffuser for vehicles of the type having an engine and an exhaust pipe, the flow diffuser comprising:
- (a) a substantially tubular body having an outer surface and a first end configured for attachment to an exhaust pipe;
- (b) a diffusion portion on the outer surface having an elongated slot;
- and
- (c) at least one substantially serpentine channel having a root end located near the elongated slot, an exit port, and a channel axis extending between the root end and the exit port, the channel increasing in flow area along the channel axis to reduce exhaust gas velocity.
Dependencies are inferred from the claim text.