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.

公开(公告)号：US20210199032A1

公开(公告)日：2021-07-01

申请号：US17096529

申请日：2020-11-12

Applicant: KUBOTA Corporation

Inventor： Satoshi SUGIMOTO ,  Takayuki ICHIKAWA ,  Shota HATADA

IPC: F01M13/04

Abstract: The head cover for an engine includes a gas passage in the head cover, a gas outlet formed on a head cover wall at a terminal end portion of the gas passage in the head cover, a gas intermediate outlet portion formed in the head cover wall so as to face space inside the head cover except the gas passage in the head cover, and a gas intermediate inlet portion formed in the head cover wall so as to face the gas passage in the head cover, in which an opening specification in which through holes penetrating the head cover wall are formed and a closing specification in which the through holes are not formed can be selected for the gas intermediate outlet portion and the gas intermediate inlet portion.