Invention Grant
- Patent Title: Self-lubricating balance shaft with flow control
- Patent Title (中): 自润滑平衡轴带流量控制
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Application No.: US13673073Application Date: 2012-11-09
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Publication No.: US08695557B2Publication Date: 2014-04-15
- Inventor: Matthew Evans , Matthew Erker
- Applicant: Schaeffler Technologies AG & Co. KG
- Applicant Address: DE Herzogenaurach
- Assignee: Schaeffler Technologies GmbH & Co. KG
- Current Assignee: Schaeffler Technologies GmbH & Co. KG
- Current Assignee Address: DE Herzogenaurach
- Agency: Volpe and Koenig, P.C.
- Main IPC: F02B75/08
- IPC: F02B75/08

Abstract:
A mass compensating shaft drive for compensating forces or moments of inertia of a reciprocating piston internal combustion engine is provided having a balance shaft supported by at least one journal in a housing of the internal combustion engine. A rolling bearing is located between each of the at least one journals and the housing. The balance shaft includes an oil gallery that is adapted to be connected to a source of pressurized lubricating oil. A check valve is located between the oil gallery and each of the at least one bearing journals, with the check valve being arranged to open upon at least one of a lubricating oil pressure or a centrifugal force generated through rotation of the balance shaft exceeding a predetermined closing force for the check valve.
Public/Granted literature
- US20130167792A1 SELF-LUBRICATING BALANCE SHAFT WITH FLOW CONTROL Public/Granted day:2013-07-04
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