Title:
エンジン作業機
Document Type and Number:
Japanese Patent JP7032237
Kind Code:
B2
Abstract:
To attain improvement of cooling efficiency and to satisfactorily prevent infiltration of rain water from a suction hole by providing ducts on two upper and lower stages of a casing.SOLUTION: A first suction duct 14 including a first suction hole 14a and a first duct body 14c of which the opening is directed upward is provided at an upper side of a casing 12, and a second suction duct 15 including a second suction hole 15a and a second duct body 15b is provided at a lower side of the first suction duct 14. A pair of drain holes 14b and 14b is formed at a lower side of both ends of the casing 12 in a width direction of the first suction hole 14a, and the first duct body 14c is attached while enclosing the first suction hole 14a and the drain hole 14b. A bottom wall 14f of the first duct body 14c is formed from a slope which is inclined gradually downwards from the inside of the casing 12 to the casing, and the bottom wall 14f is connected with the pair of drain holes 14b and 14b. The second suction hole 15a is formed at an inner lower side in a width direction of the pair of drain holes 14b and 14b.SELECTED DRAWING: Figure 1
Inventors:
Hayato Sakuragi
Application Number:
JP2018100184A
Publication Date:
March 08, 2022
Filing Date:
May 25, 2018
Export Citation:
Assignee:
Nippon Vehicle Manufacturing Co., Ltd.
International Classes:
F02B63/04; F02B77/13; F02M35/16
Domestic Patent References:
| JP9203326A | ||||
| JP2016217205A | ||||
| JP84531A | ||||
| JP20183769A |
Foreign References:
| CN103821613A | ||||
| KR1020090081192A |
Attorney, Agent or Firm:
Yoshihiko Kido
Kido Kazuhiko
Kido Kazuhiko
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