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US 7,118,716 B2Granted
Hydrocarbon bleed emission scrubber with low restriction
AssigneeDelphi Technologies, Inc.
InventorsThomas C. Meiller, Charles H. Covert, Susan S. LaBine
Life of this patent
Estimating the term…
Abstract
A hydrocarbon emissions scrubber for use in an evaporative emissions control system of a motor vehicle includes a scrubber element having an elongate body. The body defines a plurality of passageways for the flow of fluid therethrough. The plurality of passageways are one of coated with or constructed of a sorbent material. The sorbent material is adsorptive of hydrocarbons.
Claims35
A hydrocarbon emissions scrubber, comprising:
- an elongate housing, said housing defining a channel for a flow of fluid through said housing;
- at least two scrubber elements each having an elongate body, each of said at least two scrubber elements being disposed within said housing and in fluid communication with said channel, wherein each of said at least two scrubber elements are disposed in series relative to a flow of air through said channel such that air flows sequentially through said at least two scrubber elements for filtering bleed emissions from the flow of fluid through said channel;
- and
- at least one foam flow diffuser, each of said foam flow diffusers, each of said flow diffusers being disposed within said housing at respective ends of each of said bodies.
1 more element
An evaporative emissions assembly, comprising:
- a housing, said housing defining a purge port, a vent port and a vapor inlet port, sorbent material being disposed within said housing, each of said purge port, said vent port, and said vapor inlet port being in fluid communication with said sorbent material;
- a scrubber element disposed within said housing, said scrubber element in fluid communication with said vent port, said scrubber element being disposed intermediate said vent port and said sorbent material such that a flow of air into and out of said vent port flows through said scrubber element and said sorbent material, wherein said scrubber element includes an elongate body having a first and second end, said body defining a plurality of passageways for the flow of fluid therethrough from said first end to said second end, said plurality of passageways being one of coated with and constructed of a sorbent material, said sorbent material being adsorptive of hydrocarbons;
- and
- at least one foam flow diffuser, each of said at least one flow diffuser being disposed within said housing at a respective end of said body of said scrubber element.
1 more element
An evaporative emissions assembly, comprising:
- an evaporative canister, said evaporative canister including a purge port, a vent port and a vapor inlet port, sorbent material being disposed within said evaporative canister, each of said purge port, said vent port, and said vapor inlet port being in fluid communication with said sorbent material;
- a hydrocarbon emissions scrubber including a housing and a scrubber element, said housing being separate from said evaporative canister, said housing defining a channel for the flow of fluid therethrough, said scrubber element being disposed within said housing and in fluid communication with said channel, said scrubber element configured for filtering bleed emissions from fluid flowing through said channel;
- and
- a conduit fluidly interconnecting said channel of said housing and said vent port of said evaporative canister.
1 more element
An evaporative emissions control system, comprising:
- an evaporative canister including a vent port;
- and
- a hydrocarbon emissions scrubber including a housing defining a channel for a flow of fluid therethrough, said housing being separate from said evaporative canister, said channel being in fluid communication with said vent port, a scrubber element disposed in fluid communication with said channel, said scrubber element configured for filtering bleed emissions from the flow of fluid through said channel.
An evaporative emissions assembly, comprising:
- a housing, said housing defining a purge port, a vent port and a vapor inlet port, sorbent material being disposed within said housing, each of said purge port, said vent port, and said vapor inlet port being in fluid communication with said sorbent material;
- a scrubber element disposed within said housing, said scrubber element in fluid communication with said vent port, said scrubber element being disposed intermediate said vent port and said sorbent material such that a flow of air into and out of said vent port flows through said scrubber element, wherein said scrubber element includes an elongate body having a first and second end, said body defining a plurality of passageways for the flow of fluid therethrough from said first end to said second end, said plurality of passageways being one of coated with and constructed of a sorbent material, said sorbent material being adsorptive of hydrocarbons;
- and
- at least one flow diffuser, each of said at least one flow diffuser being disposed within said housing at a respective end of said body of said scrubber element, wherein said at least one diffuser is disposed in contact with said scrubber element.
1 more element
Dependencies are inferred from the claim text.