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Title:
BALANCER DEVICE WITH OIL PUMP
Document Type and Number:
WIPO Patent Application WO/2021/053848
Kind Code:
A1
Abstract:
A balancer device with oil pump, comprising: a pump housing having a pump housing chamber therein; a pump component that is housed inside the pump housing chamber and, when a rotational force is transmitted thereto, discharges oil that has been guided from a suction unit, discharging same from a discharge unit to an oil passage in an internal combustion engine; a control oil chamber that is provided between the pump housing chamber and the pump component, in the radial direction relative to the axis of rotation for the pump component, and changes the oil pressure of oil that is discharged from the pump component, as a result of oil being guided thereto that has been discharged from the discharge unit, has passed through the internal combustion engine oil passage, and is pressure adjusted; a balancer housing that has a bearing holding unit supporting a balancer shaft that transmits rotational force from the internal combustion engine to the pump component and is arranged along the rotational axis of the pump component, said balancer housing being attached to the pump housing in the direction of the axis of rotation of the pump component; and a plurality of oil passage openings that are formed together on one side surface of the balancer housing, are connected to an oil passage connected to a main oil gallery in the internal combustion engine, and include a discharge oil passage opening for a discharge oil passage connecting the discharge unit and the main oil gallery of the internal combustion engine, a feedback oil passage opening for a feedback oil passage connecting the main oil gallery in the internal combustion engine and the control oil chamber, and a bearing oil passage opening for a bearing oil passage connecting the main oil gallery for the internal combustion engine and the bearing holding unit.

Inventors:
KURITA MASAHUMI (JP)
HIRANO TAKASHI (JP)
KITAMURA MASAHARU (JP)
Application Number:
PCT/JP2020/006970
Publication Date:
March 25, 2021
Filing Date:
February 21, 2020
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
F01M1/02; F01M1/06; F01M1/16; F16F15/26
Domestic Patent References:
WO2017141917A12017-08-24
WO2018163688A12018-09-13
WO2019171759A12019-09-12
Foreign References:
JP2005003089A2005-01-06
JP2005036872A2005-02-10
JP2007023901A2007-02-01
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
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