Hydrated EGR system, method and apparatus for reducing harmful exhaust emissions and improving fuel economy
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02M-025/07
F02B-047/08
F02B-047/00
F01N-007/12
F01N-007/00
F01N-003/04
출원번호
UP-0890303
(2007-08-03)
등록번호
US-7530349
(2009-07-01)
발명자
/ 주소
Rim, Julius J.
대리인 / 주소
Carrier, Blackman & Associates, P.C.
인용정보
피인용 횟수 :
2인용 특허 :
21
초록▼
A hydrated EGR system, method and apparatus for a vehicle, in which heat from an exhaust pipe is used to heat an aqueous fluid solution in a water tank. A portion of the hot exhaust gas is diverted from the main exhaust flow, and the diverted portion is bubbled through the heated aqueous fluid solut
A hydrated EGR system, method and apparatus for a vehicle, in which heat from an exhaust pipe is used to heat an aqueous fluid solution in a water tank. A portion of the hot exhaust gas is diverted from the main exhaust flow, and the diverted portion is bubbled through the heated aqueous fluid solution to form a hydrated EGR mixture containing water vapor. The hydrated EGR mixture is then fed back to an intake portion of the engine, is mixed with an incoming fuel/air mixture, and is burned with the fuel air mixture inside the engine. The use of the hydrated EGR mixture, including heated water vapor, as part of the intake charge simultaneously reduces harmful exhaust emissions, improves engine performance, and improves fuel economy of the vehicle.
대표청구항▼
I claim: 1. An exhaust treatment apparatus for a vehicle, said apparatus comprising: a main tank housing having a hollow tank chamber formed therein, said tank housing configured and adapted to hold a fluid solution in said tank chamber, said main tank housing having an intake port therein to permi
I claim: 1. An exhaust treatment apparatus for a vehicle, said apparatus comprising: a main tank housing having a hollow tank chamber formed therein, said tank housing configured and adapted to hold a fluid solution in said tank chamber, said main tank housing having an intake port therein to permit addition of said fluid solution into said tank chamber and an outlet port formed therein to allow passage of an EGR mixture outwardly from said tank chamber; an exhaust pipe which passes through the tank chamber of said main tank housing for connecting to an exhaust system of a vehicle, said exhaust pipe having a passage formed therethrough to permit the flow of exhaust gas through said exhaust pipe, and an EGR tube branching off of the primary exhaust pipe within the main tank housing, said EGR tube having a proximal end attached to and in fluid communication with the primary exhaust pipe, and a distal end opposite said first end and disposed in said tank chamber of said main tank housing, said distal end of said EGR tube being open to said tank chamber and adapted to be immersed in said fluid solution during use. 2. An exhaust treatment apparatus for a vehicle, said apparatus comprising: a main tank housing having a hollow tank chamber formed therein, said tank housing configured and adapted to hold a fluid solution in said tank chamber, said main tank housing having an intake port therein to permit addition of said fluid solution into said tank chamber and an outlet port formed therein to allow passage of an EGR mixture outwardly from said tank chamber; an exhaust pipe which is connected to said main tank housing for connecting to an exhaust system of a vehicle, said exhaust pipe having a passage formed therethrough to permit the flow of exhaust gas through said exhaust pipe; and an EGR pipe branching off of the primary exhaust pipe within the main tank housing, said EGR pipe having a proximal end attached to and in fluid communication with the primary exhaust pipe, and a distal end opposite said first end and disposed in said tank chamber of said main tank housing, said distal end of said EGR pipe having an outlet which is open to said tank chamber and adapted to be immersed in said fluid solution during use. 3. The exhaust treatment apparatus of claim 2, wherein said exhaust pipe extends through said tank housing, and is situated in the tank chamber so as to be at least partially immersed in said fluid solution during use. 4. The exhaust treatment apparatus of claim 2, further comprising a fluid level indicator attached to said tank housing. 5. The exhaust treatment apparatus of claim 2, wherein the exhaust pipe extends outwardly beyond the tank housing on two opposed sides of the tank housing. 6. The exhaust treatment apparatus of claim 2, wherein the exhaust pipe and the tank housing are integrally connected as a unitary body. 7. The exhaust treatment apparatus of claim 2, wherein the outlet of the EGR pipe is larger in diameter than the outlet port of the tank housing. 8. An exhaust emissions reduction system, comprising the exhaust treatment apparatus of claim 2 and an insulated EGR tube for placement on a vehicle between the tank housing outlet port and an engine. 9. A method of operating a vehicle having an internal combustion engine, said method comprising the steps of: passing hot exhaust gas which has been output from said internal combustion engine through an exhaust treatment apparatus comprising a tank housing having a hollow tank chamber formed therein and an exhaust pipe which is connected to said tank housing, wherein said tank chamber has a aqueous fluid solution therein, whereby heat from said exhaust pipe heats said aqueous fluid solution; passing a portion of said exhaust gas through an EGR outlet pipe which branches off of said exhaust pipe and bubbling said exhaust gas portion through said heated aqueous fluid solution in said tank chamber to form a hydrated EGR mixture containing water vapor; routing said hydrated EGR mixture outwardly from said exhaust treatment apparatus and to an intake portion of said engine through an EGR flow pipe; and mixing said hydrated EGR mixture with intake air flowing into said intake portion of said engine. 10. The method of claim 9, further comprising a step of burning a fuel-air mixture containing said hydrated EGR mixture in a combustion chamber of said engine. 11. The method of claim 9, wherein the aqueous fluid solution comprises an additive composition. 12. The method of claim 11, wherein the additive composition comprises a material selected from the group consisting of cerium carboxylate, copper naphthanate, copper acetate, and mixtures thereof.
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