Title:
An engine and an engine work machine
Document Type and Number:
Japanese Patent JP5915924
Kind Code:
B2
Abstract:
In an engine including a cooling fan provided at one end of a drive shaft to cool the engine, a muffler is attached such that a longitudinal direction thereof coincide with a direction of gravity, and a muffler accommodating chamber is formed by a muffler cover. A portion of cooling air generated by the cooling fan is introduced into the muffler accommodating chamber so as to cool the muffler. At the muffler accommodating chamber, a cooling air outlet is provided at an upper end of a cooling passage, such that the waste heat of the muffler is discharged from the cooling air outlet to the outside during the stop of the engine. A cooling air inlet is disposed below the cooling air outlet such that the cooling air flows from the lower side to the upper side of the muffler.
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Inventors:
Naoto Hitotsubashi
Application Number:
JP2011206674A
Publication Date:
May 11, 2016
Filing Date:
September 21, 2011
Export Citation:
Assignee:
Hitachi Koki Co., Ltd.
International Classes:
F01N13/14; F01P5/06; F01P1/06; F02B63/02; F02B67/00; F02B77/11
Domestic Patent References:
| JP63192909A | ||||
| JP2003129840A |
Foreign References:
| US5269665 |
Attorney, Agent or Firm:
Shinichi Kakubo