公开(公告)号：US20200208552A1

公开(公告)日：2020-07-02

申请号：US16658935

申请日：2019-10-21

Applicant: KUBOTA Corporation

Inventor： Satoshi SUGIMOTO ,  Yusuke KOMEMUSHI ,  Shinya ASADA ,  Takayasu OGUSHI

IPC: F01M13/00 ,  F01M13/04

Abstract: An engine is provided where oil is minimally blown off through a breather chamber. The breather chamber includes a plurality of breather inlet chambers each having a breather inlet which opens on a bottom wall; an oil separation chamber where blow-by gases flown out from the breather inlet chambers merge together and oil separation is performed; and a breather outlet. A ceiling wall of each breather inlet chamber is lower than a ceiling wall of an oil separation chamber. It is preferable that the respective breather inlet chambers each have: a remote-side chamber portion disposed remote from the oil separation chamber and a near-side chamber portion disposed near to the oil separation chamber. A ceiling wall of the near-side chamber portion is disposed lower than a ceiling wall of the remote-side chamber portion with a stepped portion formed between the ceiling wall and the ceiling wall.

公开(公告)号：US20190003368A1

公开(公告)日：2019-01-03

申请号：US15972329

申请日：2018-05-07

Applicant: KUBOTA Corporation

Inventor： Takayuki ICHIKAWA ,  Mutsuhisa ISHIHARA ,  Shinya ASADA ,  Yasushi KOBAYASHI

IPC: F01P3/02 ,  F01P3/08 ,  F02F7/00

Abstract: There is provided a vertical multicylinder straight engine in which the temperature distribution of a plurality of cylinder barrels is made close to an even state. A cylinder jacket includes: a jacket inlet; a separated channel; a plurality of separated outlets; and heat dissipator channels for dissipating heat of the respective cylinder barrels to engine cooling water introduced through the separated outlets. The plurality of separated outlets include: a front-side separated outlet to a front-end barrel; a rear-side separated outlet to a rear-end barrel; and middle separated outlets to middle barrels between the front-end barrel and the rear-end barrel, and the jacket inlet is disposed so as to be contained within an entire middle barrel side area that is lateral to the middle barrels and has a front-rear length as long as a length from a front-most end to a rear-most end of the middle barrels.