Title:
EXHAUST GAS RECIRCULATION DEVICE FOR ENGINE
Document Type and Number:
WIPO Patent Application WO/2004/081363
Kind Code:
A1
Abstract:
In an exhaust gas recirculation device for an engine with a mechanism for recirculating a portion of exhaust gas to the suction side of a cylinder head, a communication hole is opened in a wall between an exhaust port and suction port of the cylinder head. The communication hole is provided obliquely from the upper side to lower side of the wall, and the communication hole at the suction side is opened in a direction along the direction of swirls of sucked air. Further, a choke is provided in at least either a suction flow passage communicated with the suction port or an exhaust flow passage communicated with the exhaust port, and the opening area of the suction flow passage or the exhaust flow passage is variable by the throttle.
Inventors:
NISHIMURA SHINJI
MASUDA HIROKI
FUJII HIROYUKI
MASUDA HIROKI
FUJII HIROYUKI
Application Number:
PCT/JP2004/001951
Publication Date:
September 23, 2004
Filing Date:
February 19, 2004
Export Citation:
Assignee:
YANMAR CO LTD (JP)
NISHIMURA SHINJI
MASUDA HIROKI
FUJII HIROYUKI
NISHIMURA SHINJI
MASUDA HIROKI
FUJII HIROYUKI
International Classes:
F02D9/02; F02D9/04; F02M25/07; (IPC1-7): F02M25/07
Foreign References:
| JPS56118949U | 1981-09-10 | |||
| JPS5224622A | 1977-02-24 | |||
| JPH0240961U | 1990-03-20 | |||
| JPS5925877B2 | 1984-06-21 | |||
| JPS5716251A | 1982-01-27 | |||
| JP2003027966A | 2003-01-29 | |||
| JPS4816224U | 1973-02-23 | |||
| JPS57176639U | 1982-11-08 | |||
| JPS52127514A | 1977-10-26 |
Other References:
See also references of EP 1605153A4
Attorney, Agent or Firm:
Yano, Juichiro (Twin 21 Mid Tower 34th Floor, 1-61, Shiromi
2-chome, Chuo-k, Osaka-shi Osaka, JP)
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