Schmieranlage für eine Viertaktbrennkraftmaschine

Lubricating system in a 4-cycle engine

Dispositif de lubrification pour un moteur à 4 temps


An oil reservoir chamber, a crank chamber and a valve-operating chamber are provided in an engine body. The oil reservoir chamber and the crank chamber are in communication with each other through a through-hole, and the crank chamber and the valve-operating chamber are in communication with the each other through a one-way valve which is opened upon rising of the pressure in the crank chamber. The valve-operating chamber and the oil reservoir chamber are in communication with each other through an orifice. By utilizing a pressure pulsation in the crank chamber, an oil mist produced in the oil reservoir chamber is circulated from the oil reservoir chamber to the crank chamber, the valve-operating chamber and the oil reservoir chamber. Thus, in any operational attitude of an engine, the lubricating oil can be circulated without use of special oil pump.




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Patent Citations (3)

    Publication numberPublication dateAssigneeTitle
    JP-H1136842-AFebruary 09, 1999Yanmar Diesel Engine Co Ltd, ヤンマーディーゼル株式会社バーチカルエンジンのブリーザ装置
    US-3523592-AAugust 11, 1970Kohler CoEngine lubrication system
    US-5456230-AOctober 10, 1995Outboard Marine CorporationFour-stroke internal combustion engine with contaminated oil elimination

NO-Patent Citations (1)

    PATENT ABSTRACTS OF JAPAN vol. 1999, no. 05, 31 May 1999 (1999-05-31) & JP 11 036842 A (YANMAR DIESEL ENGINE CO LTD), 9 February 1999 (1999-02-09)

Cited By (2)

    Publication numberPublication dateAssigneeTitle
    EP-1666703-A1June 07, 2006Ji-Rong HuKleiner viertakt-benzinmotor mit ölnebelschmierung
    EP-1666703-A4March 11, 2009Ji-Rong HuA small four-stroke gasoline engine with oil mist lubrication