Title:
エンジンおよびそれを備えたエンジン作業機
Document Type and Number:
Japanese Patent JP5471789
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an engine suitable for a portable engine working machine for further facilitating operation at start-up.SOLUTION: The engine 1 includes: a cylinder block 3 having a pressure reduction opening 40 opened in a cylinder bore 5 or a cylinder head inner wall surface 65, and a pressure reduction passage 41 connected to the pressure reduction opening 40; a decompression device 24 installed in the cylinder block 3, and having a first atmospheric opening 50 and a second atmospheric opening 51 communicating with the atmosphere, an air chamber 49 connected to the first and second atmospheric openings 50 and 51, and a pressure reducing valve 44 for communicating the air chamber 49 with the pressure reduction passage 41 and shutting off the communication by receiving pressure of a predetermined value or more in the cylinder bore 5; and a fuel supply device for start-up integrated with the decompression device 24 for supplying fuel in the cylinder bore 5 via the pressure reduction opening 40 from the pressure reduction passage 41.
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Inventors:
Takuhiro Murakami
Junichi Uemura
Naoto Hitotsubashi
Junichi Uemura
Naoto Hitotsubashi
Application Number:
JP2010105913A
Publication Date:
April 16, 2014
Filing Date:
April 30, 2010
Export Citation:
Assignee:
Hitachi Koki Co., Ltd.
International Classes:
F02D15/00; F02B63/00; F02B63/02; F02B65/00; F02B67/00; F02D19/06
Domestic Patent References:
| JP2085876U | ||||
| JP7224745A | ||||
| JP8004618A | ||||
| JP6049895Y2 |
Attorney, Agent or Firm:
Kimura Mitsuru
Johei Nakamura
Johei Nakamura