Air cleaning device for internal combustion engine and internal combustion engine
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0440376
(2008-08-12)
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등록번호 |
US-8137424
(2012-03-20)
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우선권정보 |
JP-2007-233566 (2007-09-10); JP-2007-233567 (2007-09-10) |
국제출원번호 |
PCT/JP2008/064486
(2008-08-12)
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§371/§102 date |
20090306
(20090306)
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국제공개번호 |
WO2009/034808
(2009-03-19)
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발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
3 인용 특허 :
9 |
초록
▼
An air cleaner device that has a reduced size achieved by curving an air introduction path, that has a cleaner element with extended service life, and in which air flows uniformly in a clean chamber. The air introduction path (21) having an exit (21o) open to a dust chamber (12) of an air cleaner ch
An air cleaner device that has a reduced size achieved by curving an air introduction path, that has a cleaner element with extended service life, and in which air flows uniformly in a clean chamber. The air introduction path (21) having an exit (21o) open to a dust chamber (12) of an air cleaner chamber (11) of an air cleaner (10) has a bent path partitioned by a flow regulation plate (22) into an inside branch path (23) inside the curve and an outside branch path (24) outside the curve. Airflows separately flowing into the dust chamber (12) from the exit (21o) after passing through the inside and outside branch paths (23, 24) are deflected upward and directed toward the cleaner element (F) by a first deflection section (33) and a second deflection section (34) arranged in the dust chamber (12). The second deflection section (34) is located at a position closer in the front-rear direction to the exit (21o) than the first deflection section (33).
대표청구항
▼
1. An air cleaning device for an internal combustion engine, comprising: an air cleaner chamber divided into a dust chamber formed on a lower side and a clean chamber formed on an upper side while interposing a cleaner element therebetween in a vertical direction, whereinan outlet of an air introduc
1. An air cleaning device for an internal combustion engine, comprising: an air cleaner chamber divided into a dust chamber formed on a lower side and a clean chamber formed on an upper side while interposing a cleaner element therebetween in a vertical direction, whereinan outlet of an air introduction passage having an air introduction port is opened to the dust chamber,an inlet of an air discharge passage is opened to the clean chamber, whereina chamber wall of the air cleaner chamber includes a bottom wall opposed to the cleaner element in the vertical direction and a pair of side walls extending from the bottom wall,the pair of side walls comprises a first side wall to which the air introduction passage is connected and a second side wall which is opposed to the first side wall in an opposing direction while interposing the cleaner element therebetween,the air introduction passage has a curved passage which is divided into a curved inside branch passage and a curved outside branch passage by a partition wall,a first path length from the air introduction port to the outlet via the curved inside branch passage is set to be shorter than a second path length from the air introduction port to the outlet via the curved outside branch passage,the curved passage is curved in a direction crossing the opposing direction toward an upstream side, as viewed in the vertical direction,first and second deflecting portions are provided in the dust chamber to deflect upward flows of air flowing to the dust chamber from the outlet via the curved inside branch passage and the curved outside branch passage, respectively, to thereby direct the flows of air to the cleaner element andthe second deflecting portion is positioned closer to the outlet than the first deflecting portion in the opposing direction. 2. The air cleaning device for the internal combustion engine according to claim 1, wherein the air discharge passage extends toward the second side wall from the first side wall and has the inlet at a position distant from the first side wall in the clean chamber andthe second deflecting portion is positioned between the first side wall and the inlet in the opposing direction. 3. The air cleaning device for the internal combustion engine according to claim 1 or 2, wherein the first and second deflecting portions comprises a raised portion which is provided on the bottom wall and is raised upward. 4. The air cleaning device for the internal combustion engine according to claim 1 or 2, wherein an interval between the first and second deflecting portions in the opposing direction is substantially the same as a difference between the first path length and the second path length. 5. The air cleaning device for the internal combustion engine according to claim 1, wherein the air discharge passage has an upstream passage having the inlet and an outflow port through which the air flowing from the inlet flows to the outside of the clean chamber,the upstream passage is formed by an upstream duct connected to the side wall of the clean chamber in the first side wall and extending in the opposing direction in the clean chamber andthe first and second deflecting portions are positioned between the inlet and the outflow port in the opposing direction, as viewed in the vertical direction. 6. The air cleaning device for the internal combustion engine according to claim 5, wherein the first deflecting portion is disposed near the inlet in the opposing direction andwherein the second deflecting portion is disposed near the outflow port in the opposing direction. 7. An internal combustion engine comprising: an air flow meter which detects flow rate of air flowing in an intake passage; andthe air cleaning device according to claim 1, forming an air passage constituting the intake passage, whereinthe air passage includes a first air passage which is disposed downstream of the air flow meter and a second air passage which has a surrounding passage at least partially surrounding in a circumferential direction a downstream duct forming the first air passage and to which an outflow port of the first air passage is opened anda blow-by gas introduction port through which a blow-by gas flows to the intake passage is opened to the surrounding passage in the upstream of the outflow port. 8. The internal combustion engine according to claim 7, wherein the surrounding passage is an annular passage surrounding the downstream duct over whole circumference thereof. 9. The internal combustion engine according to claim 7 or 8, wherein a flow direction of the air at an inflow port of the first air passage and a flow direction of the air at an outlet of the second air passage are different from each other andthe downstream duct is a curved duct curved so as to direct the flow of the air at the outflow port to the outlet of the second air passage and the first air passage is a curved passage. 10. The internal combustion engine according to claim 7 or 8, wherein the blow-by gas introduction port is disposed on the upper side and on the curved inside with respect to a passage center line of the curved duct in the surrounding passage. 11. The internal combustion engine according to claim 7 or 8, wherein the air cleaning device has an upstream duct having the air flow meter mounted thereon, the downstream duct and a second downstream duct forming the second air passage andthe downstream duct is a seal member for sealing a space between the upstream duct and the second downstream duct. 12. The air cleaning device for the internal combustion engine according to claim 3, wherein an interval between the first and second deflecting portions in the opposing direction is substantially the same as a difference between the first path length and the second path length. 13. The internal combustion engine according to claim 9, wherein the blow-by gas introduction port is disposed on the upper side and on the curved inside with respect to a passage center line of the curved duct in the surrounding passage. 14. The internal combustion engine according to claim 9, wherein the air cleaning device has an upstream duct having the air flow meter mounted thereon, the downstream duct and a second downstream duct forming the second air passage andthe downstream duct is a seal member for sealing a space between the upstream duct and the second downstream duct. 15. The internal combustion engine according to claim 10, wherein the air cleaning device has an upstream duct having the air flow meter mounted thereon, the downstream duct and a second downstream duct forming the second air passage andthe downstream duct is a seal member for sealing a space between the upstream duct and the second downstream duct.
이 특허에 인용된 특허 (9)
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Scholl, Hans Peter; Scholz, Guenther; Daubner, Heinz; Rackerseder, Johann; Lebherz, Reinhold; Pfeiffer, Frank; Sohnemann, Jens; Stahl, Juergen; Brenneis, Fritz, Active carbon coated filter element for preventing the leaking of hydrocarbons.
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Sudoh, Katsunori, Air cleaner.
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Takemura Hiroo (Saitama JPX) Yamada Hajime (Saitama JPX), Air cleaner for a vehicle.
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Kobayashi Koki,JPX ; Dazai Masayuki,JPX ; Nishimoto Kenichi,JPX ; Nishizawa Kenichi,JPX, Air cleaner having a curved guide surface for airflow to an air cleaning element.
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Schorn, Juergen, Air filter arrangement for a multi-cylinder combustion engine.
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Suzuki, Hayato, Air-cleaner.
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Magrini Guido (Brescia ITX), Air-intake devices for internal combustion engines.
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Ballard John R. (Chesham GB2), Gas turbine engine cowling.
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Tingle, Walter Jackson; Oliver, Wayne R.; Kirtley, Kevin, Particle separator using boundary layer control.
이 특허를 인용한 특허 (3)
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Shieh, Tenghua Tom; Lee, Dong-Hyun; Minupuri, Swetha, Air filter assembly.
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Kitagawa, Tomoaki, Engine apparatus with blow-by gas handling device.
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Lee, Seong-Hack; Jung, Jae-Hyeon, Variable intake-type air cleaner.
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