公开(公告)号：US20200011268A1

公开(公告)日：2020-01-09

申请号：US16450025

申请日：2019-06-24

Applicant: HONDA MOTOR CO., LTD.,

Inventor： Kensuke MORI ,  Hidekatsu TSUTSUMI ,  Takahiro IWAMA

IPC: F02F7/00 ,  F16F15/26

Abstract: An internal combustion engine includes: a wall body that is formed on a crankcase to accommodate a generator by sandwiching the generator between the wall body and a generator cover coupled to the crankcase from outside; a casing that includes a casing wall, the casing wall being formed on the crankcase and, at a position apart from the wall body in an axial direction of the crankshaft, facing the wall body with a space contiguous to an outer surface of the crankcase sandwiched between the casing wall and the wall body; and a balancer shaft that has an axis thereof parallel to the rotation axis of the crankshaft, and is rotatably supported by the casing while one end of the balancer shaft protrudes from the casing wall into the space. Accordingly, the engine can reduce its weight by shortening the balancer shaft as much as possible without upsetting weight balance.

公开(公告)号：US20190301318A1

公开(公告)日：2019-10-03

申请号：US16364435

申请日：2019-03-26

Applicant: HONDA MOTOR CO., LTD.

Inventor： Dai KATAOKA ,  Hiroatsu INUI ,  Yoshihiro TAKADA ,  Takahiro IWAMA ,  Masaki CHO

IPC: F01M11/02 ,  F01M1/04

Abstract: An oil passageway structure for internal combustion engines includes a cylinder head having an inter-bearing wall fluid communication oil passage for providing fluid communication between a plurality of bearing walls to allow oil to flow therebetween. The cylinder head further includes a bearing wall oil passage branched from the inter-bearing wall fluid communication oil passage to supply oil to a bearing surfaces of at least one of the bearing walls. The inter-bearing wall fluid communication oil passage is defined in one of facing side walls. The bearing wall oil passageway is defined in at least one of the bearing walls. The oil passageway structure is thus made up of a reduced number of parts, can be assembled with a reduced number of man-hours, can lead to productivity growth, and is inexpensive to manufacture.

公开(公告)号：US20190301317A1

公开(公告)日：2019-10-03

申请号：US16364670

申请日：2019-03-26

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takahiro IWAMA ,  Dai KATAOKA ,  Yuichi TAWARADA

IPC: F01M9/10 ,  F01M11/00 ,  F01L13/00

Abstract: An engine oil passage structure for an engine contributing to downsizing the engine and achieving protection of an oil passage against external forces is provided. Provided is an oil passage structure for an engine installed in a small vehicle, the engine including an engine body formed of a crankcase and a cylinder block and a cylinder head stacked inclined vehicle frontward on the crankcase, the crankcase, the cylinder block, and the cylinder head being integrally fastened. The oil passage structure includes, near a bent part formed by a case front wall of the crankcase and a cylinder front wall of the cylinder block forming a valley part by an obtuse angle, a right-left direction oil passage extending in a right-left direction along the valley part.