Injector having tangentially oriented purge line
First Claim
Patent Images
1. A fluid injector for an exhaust treatment device of an internal combustion engine system, comprising:
- a housing at least partially forming a fluid chamber and having a central bore oriented along a central axis of the housing;
a nozzle member disposed within the central bore and oriented along the central axis of the housing, the nozzle member being configured to introduce fluid into an engine exhaust stream, the nozzle member including an upper surface at least partially forming the fluid chamber, the upper surface having a female taper directed toward a tip of the nozzle member; and
a fluid passageway configured to supply fluid to the fluid chamber in a tangential direction relative to the central axis such that the tangential supply of fluid to the fluid chamber initiates a swirling motion of the fluid into the central bore.
1 Assignment
0 Petitions
Accused Products
Abstract
A fluid injector for an exhaust treatment device is disclosed. The fluid injector may have a housing at least partially forming a fluid chamber. The housing may have a central axis, and a fluid passageway configured to supply fluid to the fluid chamber. The supply of fluid may be in a tangential direction relative to the central axis.
64 Citations
24 Claims
-
1. A fluid injector for an exhaust treatment device of an internal combustion engine system, comprising:
-
a housing at least partially forming a fluid chamber and having a central bore oriented along a central axis of the housing; a nozzle member disposed within the central bore and oriented along the central axis of the housing, the nozzle member being configured to introduce fluid into an engine exhaust stream, the nozzle member including an upper surface at least partially forming the fluid chamber, the upper surface having a female taper directed toward a tip of the nozzle member; and a fluid passageway configured to supply fluid to the fluid chamber in a tangential direction relative to the central axis such that the tangential supply of fluid to the fluid chamber initiates a swirling motion of the fluid into the central bore. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A fluid injector for an exhaust treatment device of an internal combustion engine system, comprising:
-
a housing having a central axis and a bore oriented along the central axis; a passageway configured to supply fluid to the bore; and a nozzle member disposed within the housing and the bore to form a chamber receiving fluid from the passageway, the nozzle member having an upper surface with a female taper in communication with the chamber and directed toward a tip of the nozzle member, the tip of the nozzle member being configured to introduce fluid into an engine exhaust stream, wherein the passageway is configured to supply fluid to the chamber in a tangential direction relative to the central axis such that the tangential supply of fluid initiates a swirling motion of the fluid into the bore. - View Dependent Claims (10, 11, 12, 13, 14)
-
-
15. An exhaust treatment device for a power source, comprising:
-
a housing configured to receive exhaust from the power source; a particulate trap disposed within the housing and being configured to remove particulate matter from the exhaust; and a fuel injector configured to inject fuel into the exhaust to regenerate the particulate trap, the fuel injector including; a nozzle member disposed within the housing to form a fluid chamber with a central axis, the nozzle member having a female tapered upper surface in communication with the fluid chamber, the female tapered upper surface at least partially forming the fluid chamber, and the female taper being directed toward a tip of the nozzle member; and a fluid passageway configured to supply fluid to the fluid chamber in a tangential direction relative to the central axis such that a swirling motion of the fluid is generated. - View Dependent Claims (16, 17, 18, 19)
-
-
20. A method of purging an injector for an exhaust treatment device of an internal combustion engine system, comprising:
-
pressurizing a flow of fuel; directing the flow of fuel through an injector into an engine exhaust stream; pressurizing a flow of air; directing the flow of air into a chamber formed in the injector in a tangential direction relative to a central axis of the chamber and over a surface with a female taper which is in communication with the chamber, to generate a swirl in the flow of air within the injector; and directing the swirling flow of air through the injector. - View Dependent Claims (21, 22, 23, 24)
-
Specification